# 00_Read Me_04192013

Notes:
The final version of the Steam Electric Technical Questionnaire database includes extracted data from all 733 surveys. The final version of the non-CBI Steam Electric Technical Questionnaire database has been sanitized and therefore does not contain CBI or CBI-deducible information. CBI information was removed for any information associated with a CBI checkbox marked "True". CBI deducible data is that which could be combined with non-CBI information or data to determine (or back calculate) CBI information. EPA determined CBI deducible data elements in the database as a data set where only one or two companies claimed information as CBI. For those elements, EPA also stripped all responses in the database, even if the CBI checkbox was not marked "True".

Please note the following codes, inserted into the surveys during the technical review or entered to cover CBI or CBI deducible information, throughout the database: 

-1: code that represents a "True" answer; 
-999: code that represents blank answers not required to be filled in according to the nature of plant data or skip patterns in the survey; 
-111: code that represents missing data that should have been completed in the survey; 
-555: true zero values entered by respondents;
-777: code that represents a data type mismatch error, such as text being entered into a numeric field;
-9999: code that represents redacted CBI data in a numeric field; and
Redacted: code that represents redacted CBI data in text or memo fields.

Additionally, redacted CBI data in date/time fields are shown as blank.


# Act_Pond_Chem_Addn

Act_Chem_Location:
Ash slurry piping before it enters the impoundment.


Act_Chem_Location:
Discharge point of the ash pond to the stilling pond


Act_Chem_Location:
between the sluice trench and the ash pond


Act_Chem_Location:
crossover channel from the rim ditch to the sluice trench


Act_Chem_Location:
Low Volume Waste Outfalls 03B and 03C prior to entering pond


Act_Chem_Location:
After the pond, in the recycle water pump station, before the outfall weir.


Act_Chem_Type:
Organic phosphate dispersant polymer blend


Act_Chem_Location:
near the process wastewater influent point


Act_Chem_Location:
Recirc piping entering basin near influent


Act_Chem_Purpose:
test removal efficiency of Atoxic System


Act_Chem_Purpose:
ph adjustment during coal pile runoff discharge into SPD-1


Act_Chem_Purpose:
ph adjustment of the pond water during coal pile runoff discharge into SPD-2.


Act_Chem_Location:
1st Stage Diversion Box Inlet, north and of SPD-2


Act_Chem_Purpose:
coagulate and settle suspended solids, Cu & Fe


Act_Chem_Trade:
Accu-Tab Blue Calcium Hypochlorite Tablets with Scale Inhibitor

Act_Chem_Location:
From the edge of the pond on all four sides.


Act_Chem_Location:
Spread using boat across the middle of the pond.


Act_Chem_Location:
mixing sump at the end of the process, before discharge to surface water.


Act_Chem_Location:
Distriubution box ahead of low volume waste settling ponds.


Act_Chem_Location:
in pond near discharge valve, near inlet pipe and mid pond between inlet and outlet.


# Act_Pond_Unit

Act_Drdg_Transfer_Other:
Disposal in Off-site commercial landfill


Act_Drdg_Transfer_Other:
Local asphalt company removes bottom ash


Act_Drdg_Transfer_Other:
Solids used as beneficial reuse structural fill


Act_Drdg_Transfer_Other:
Coal fines placed back onto coal pile.  Other solids landfilled off site


Act_Expand_Desc:
Two FGD gypsum dewatering cells were constructed on the existing ash delta in SPD-1 in 2007.  The two dewatering cells have a combined area of 2,000,000 square feet and a combined volume capacity of 34,000,000 cubic feet.  The dewater cell dikes have a top elevation of EL 820, 15 feet above the top of the ash pond dike.


Act_Expand_Desc:
The dam was modified to add an emergency overflow spillway, rock was installed on dam, and the water elevation was raised to 1163 from 1156.

Act_Trgtd_Other_Specify:
Coagulant fed when WWT-1 on emerg bypass


Act_Drdg_Transfer_Other:
Transferred to landfill or used as beneficial reuse.


Act_Drdg_Transfer_Other:
Used in dredge cell embankment construction and transferred to landfill post-failure.

Act_Expand_Desc:
The dredge cells were raised vertically through routine handling operations and a intermediate lateral expansion (Phase 1) of ~19 acres was constructed post-2004.  The lateral expansion to the dredge cell has a permitted footprint of ~63 acres (Phases 2 & 3), with an initial area of ~38 acres (Phase 2) constructed, starting in 2008, within the existing footprint of the ash pond. .


Act_Expand_Desc:
In 2006, a design was approved by Georgia EPD to increase the previously approved 30 foot dry stack height to 60 feet height above the operating water level. The stack remains within the existing perimeter of Ash Ponds 3 & 4.  Other than height, no other dimensional changes were made from the original ash pond dimensions.


Act_Expand_Desc:
Vertical inner dike extension; a dike encircling of approx. 18 acres within the pond was raised 13 ft, increasing the volume by approx. 10,193,040 cubic feet


Act_Expand_Desc:
Vertical expansion prior to January 1, 2000.

Act_Trgtd_Metals_Specify:
Colbalt, Zinc, Nickel, Aluminum from Acid Mine Drainage inlet streams


Act_Drdg_Transfer_Other:
Bottom ash was beneficially reused and/or placed into a landfill


Act_Drdg_Transfer_Other:
Benefically reused or placed in a landfill


Act_Expand_Desc:
Pond is an Upstream Raise expansion from 55 to 90 acre footprint.


Act_Drdg_Transfer_Other:
Dredged solids transferred to mine reclamation site.


Act_Expand_Desc:
In 2001, a design was approved by Georgia EPD to dry stack ash wthin the existing perimeter of the Ash Pond to 60 feet above the operating water level.  In 2003 the stack configuration was modified but the height remained at 60 feet.  In 2006 that plan was revised to allow gypsum storage in addition to ash.  Other than height, no other dimensional changes were made from the original ash pond dimensions.


Act_Expand_Desc:
A vertical expansion to SPD-3 was conducted in 2002.  The embankment was designed to be constructed in phases, and the 2002 vertical expansion was part of the original design.  The crest elevation was raised from 760 to 800, which created an additonal 4200 acre-feet of storage and a reservoir surface area of  approximately 146 acres at normal pool.  The embankment was designed for downstream construction using 2.1 million cubic yards of materials.


Act_Expand_Desc:
Pond was expanded in 2002.  Starting elevation was 264 ft and the ending elevation was 272 ft.


Act_Drdg_Transfer_Other:
stored in area adjacent to ash basin footprint


Act_Expand_Desc:
None, however crest elevation was raised in 1967-68.


Act_Expand_Desc:
Vertical expansion of approximately 20 acres within the pond provided an additional 5,208,960 cubic feet of storage.


Act_Drdg_Transfer_Other:
Transferred to landfill and sold for reuse.


Act_Drdg_Transfer_Other:
Dried and Excavated, solid transferred to landfill


Act_Drdg_Transfer_Other:
Internal dredge cell within pond footprint


Act_Expand_Desc:
2006 vertical expansion of Pond E was performed by raising dikes.


Act_Drdg_Transfer_Other:
dredge solids and ash are hauled by triaxial truck to the mine site for beneficial use reclamation


Act_Drdg_Transfer_Other:
Dredged solids transferred to on site monofill.


Act_Drdg_Transfer_Other:
Dredged solids are placed with ash for beneficial reuse at the site.


Act_Expand_Desc:
The South Main Dike was raised three feet in 2004 to expand the storage volume of the ash pond.


Act_Drdg_Transfer_Other:
solids returned to operating fly ash pond


Act_Expand_Desc:
vertical inner dike expansion; Dikes surrounding about 20.3 acres was elevated 5 feet increasing the volume by 4,421,690 cubic feet


Act_Drdg_Transfer_Other:
Dredged solids transferred to landfill, Dredged solids used for beneficial reuse.


Act_Expand_Desc:
Half of total pond area was raised 15 feet vertically in two phases.


Act_Drdg_Transfer_Other:
Black Hills Corporation Mine Reclamation Area

Act_Expand_Desc:
The pond has not been expanded since January 1, 2000.


Act_Drdg_Transfer_Other:
Returned to coal pile for combustion in the boilers.


Act_Expand_Desc:
In 2008, the dry pond solids were removed and a new HDPE liner system was installed in Ponds B1 and B2 (as detailed in question D4-4 above).  To even out the volumes between these two ponds, Pond B2 was expanded while Pond B1 was reduced.  Overall the combined surface area and volumes of the two ponds did not change significantly.


Act_Expand_Desc:
In 2002, former ponds 4C2 and 4C3 were closed.  After the dry solids were removed, a new pond- named C2 was constructed in the same area. Pond C2 has the same approximate dimensions that the previous two ponds had together.


Act_Expand_Desc:
Vertical inner dike expansion; increased 34 acres within the pond by 6 feet.


Act_Expand_Desc:
Vertical inner dike expansion; approximately 34 acres within the pond was raised by 8 feet.


Act_Drdg_Transfer_Other:
Beneficial reuse as a sand substitute, structural fill, mine reclamation or landfilled at the John E. Amos Quarrier landfill


Act_Drdg_Transfer_Other:
Used to fill Pond B and construct a subbase for landfill.


Act_Drdg_Transfer_Other:
Dredged solids are transported to the south ash pond


Act_Drdg_Transfer_Other:
Dredged solids transported to the south ash pond


Act_Expand_Desc:
In 2000, Pond D was reactivated and the levee was raised from 625' to 633'.  In 2005, The Pond D levee was raised from 633' to 643'.


Act_Expand_Desc:
Starting 306ft by 84 ft Ending 324ft by 84 ft

Act_Trgtd_Metals_Specify:
Iron, copper, arsenic, barium, cadmium, chromium, lead, nickel, selenium, vanadium, zinc


Act_Drdg_Transfer_Other:
The solids were used to build a dewatering basin for bottom ash within the boundary of the bottom ash pond.


Act_Expand_Desc:
Not Applicable.  No vertical expansions to Pond A since January 1, 2000.


Act_Expand_Desc:
The dam was raised 20 feet with roller compacted concrete from Elevation 373 to Elevation 393 in 2005.  This expanded the volume of the pond from approximately 2.9 million cubic yards to 17.3 million cubic yards.


Act_Drdg_Transfer_Other:
Roads and Onisite Dry Fly Ash Landfill cap.


Act_Expand_Desc:
In late 2001, the top was broadened from 8 feet to 12 feet and lengthened from a slope of 1:1 to 2:1.


Act_Drdg_Transfer_Other:
transferred to culm piles for reuse in boiler


Act_Drdg_Transfer_Other:
The slag was transferred to a landfill, marketed and stored for preparation for marketing.


Act_Expand_Desc:
NA (Last expansion occurred prior to January 1, 2000)


Act_Drdg_Transfer_Other:
Solids are placed in pond's settling area and/or given away for reuse.


Act_Drdg_Transfer_Other:
Beneficial use as a substitute for sand, structural fill, mine reclamation or landfilled at the John E. Amos Quarrier Landfill


Act_Drdg_Transfer_Other:
Used within active pond area for berm construction.


Act_Expand_Desc:
Records show that bottom ash dike existed at elevation 826' in 1988.(10W294-12) In 2006, construction proceeded to grade and expand the dike height to elevation 835' which is its current conditions.(10W298-13).  In drawing 10W294, it showed the exisitng condition elevation to be at 820. The unit has been stacked from orginal elevation of 820 in 1986 to its current elevation 840.


Act_Expand_Desc:
Raised levee elevation 17 feet in 2001 (1,500,000) and another 20 feet in 2006 (2184000)


Act_Expand_Desc:
Expansion project was completed prior to January 1, 2000


Act_Drdg_Transfer_Other:
Miscellaneous beneficial use projects (including structural fill)


Act_Expand_Desc:
Expanded in 2003 from approximately 200 acres to 372 acres.


Act_Expand_Desc:
The pond was emptied, lined with the top 2 layers of 60 mil HDPE and compacted clays, and the vertical crest was extended 10 feet.


Act_Drdg_Transfer_Other:
Fly ash placed in landfill/sediments placed in fly ash pond


Act_Expand_Desc:
Expansion was prior to January 1, 2000. Expansion was due to construction of Markland Dam raising the Ohio River normal operating pool.


Act_Drdg_Transfer_Other:
Beneficially used for on site construction and offsite


Act_Expand_Desc:
expanded capacity to meet new SW regulations


Act_Expand_Desc:
Starting dimensions are unknown.  The evaporation pond was expanded initially, then contracted to form FGD Pond #2.  Costs cannot be determined.


Act_Trgtd_Metals_Specify:
Aluminum,Arsenic, Boron, Cadmium, Iron, Manganese, Mercury, Nickel,Zinc


Act_Expand_Desc:
Not applicable: Expansion conducted in 1985.


Act_Drdg_Transfer_Other:
Transferred to onsite landfill  if not marketed


Act_Drdg_Transfer_Other:
sluiced to other on-site ash pond and/or used for pond embankment repair


Act_Drdg_Transfer_Other:
Past disposal in RET-POND-1 and POND-3.  Future disposal in  POND-4.


Act_Drdg_Transfer_Other:
Disposal and Utilization in RET-POND-1, POND-3, POND-4 and LANDFILL-1.


Act_Expand_Desc:
In 2000 completed Phase III of the Vertical Expansion, raising the top of dike from elevation 1000 to 1012.


Act_Expand_Desc:
In 2008 completed Vertical Expansion, raising the top of dike from elevation 976 to 997.


Act_Expand_Desc:
Bottom elevation lowered from 1263.5 ft to 1258 due to over excavation, width increased from 41 ft to 50 ft due to dredging operations over past 17 years


Act_Expand_Desc:
Between 2003 - 2006: Dike Raised 11.5 feet


Act_Expand_Desc:
Primary cell was enlarged by raising the perimeter berms and increasing the base areas.  Expansion increased primary cell capacity from approx. 216 ac-ft. to 566 ac-ft.


Act_Expand_Desc:
N/A - Expansion(s) occurred before January 1, 2000


Act_Expand_Desc:
Approval granted in 2000 for increasing ash stack height within existing footprint from previously approved 30 feet height to 60 feet.  No construction costs applied.  Costs below are for engineering.


Act_Drdg_Transfer_Other:
Roads and Onsite Dry Fly Ash Landfill Cap.


Act_Drdg_Transfer_Other:
stockpiled, awaiting disposal at Hwy. 52 Landfill.


Act_Expand_Desc:
Dam crest increased from 800 to 810 MSE, Pool elevation increased from 795 to 800 MSE.


Act_Drdg_Transfer_Other:
transported to a different section of the impoundment


Act_Expand_Desc:
Not Applicable. No vertical expansion performed since January 1, 2000.


Act_Expand_Desc:
Not Applicable.  No vertical expansion since January 1, 2000..


Act_Expand_Desc:
Not Applicable.  No vertical expansions have been performed since january 1, 2000.


Act_Expand_Desc:
A plan was developed in 2001 to stack ash up to 60 feet above the water level within the existing footprint of the pond.  The plan was modified in 2004 to include disposal of gypsum in the stack.  The plan has not been implemented, but the design costs are shown below.


Act_Drdg_Transfer_Other:
Beneficial reuse as structural fill at clay mine.


Act_Drdg_Transfer_Other:
The bottom ash is used for chimney drain construction in the Conner Run Dam.


Act_Drdg_Transfer_Other:
Transferred to abandoned clay mine for structural fill.


Act_Drdg_Transfer_Other:
Beneficial reuse as structural fill at clay mine

Act_Expand_Desc:
Two vertical pumps were removed from pond.  A ditch was cut from SPD-8 to SPD-1.  Freeboard height decreased from 5 ft to 2 ft.


Act_Drdg_Transfer_Other:
Dredge Material Transferred to Coal Pile


Act_Expand_Desc:
Pond SPD-12 was expanded twice both of these expansions were vertical lifts. The pond will be expanded two more times and both horizontal expansion


Act_Drdg_Transfer_Other:
beneficially used in landfill construction, sold/given for reuse, some solids landfilled, construction of floating roads in fly ash impoundment


Act_Drdg_Transfer_Other:
beneficially used as a sand substitute in landfill and other structural fill construction, sold/given for reuse, some solids landfilled, construction of floating roads in fly ash impoundment


Act_Drdg_Transfer_Other:
Some taken to SPD-1, some used at landfill.


Act_Drdg_Transfer_Other:
Dredged solids disposed of in onsite landfills; cenospheres sold.


Act_Drdg_Transfer_Other:
Solids landfilled, sold and beneficially used onsite


Act_Drdg_Transfer_Other:
Dredged solids disposed of in onsite landfills; cenospheres sold


Act_Drdg_Transfer_Other:
Dredged solids placed in onsite landfills; cenospheres sold.


Act_Expand_Desc:
Cell 2 was constructed in 2004 to 2065'msl, in 2007 it was vertically raised to 2075' msl, then in 2008 to current final elevation of 2100' msl


Act_Drdg_Transfer_Other:
AmerenUE Taum Sauk Power Plant Upper Reservoir


Act_Drdg_Transfer_Other:
Dredged economizer ash to landfill, slag marketed or to landfill


Act_Expand_Desc:
In 1978, a new dam was constructed immediately downstream of the original dam, innundating the original structure.


Act_Drdg_Transfer_Other:
stored in area adjacent to the primary ash basin (SPD-1) footprint


Act_Drdg_Transfer_Other:
dredged solids stored on site, taken to a landfill, used for reclamation and structural fill projects


Act_Drdg_Transfer_Other:
hauled off-site by fuel supplier for mine reclaimation

Act_Expand_Desc:
Bottom elevation lowered from 1267 ft to 1260 due to over excavation. The expanasion is not planned, but varies in practive depending on how deep contactor digs in removing ash. So cost = $0.


Act_Drdg_Transfer_Other:
placed as dry material in inactive cell within the pond


Act_Expand_Desc:
Expansion occurred prior to January 1, 2000


Act_Expand_Desc:
The pond was expanded vertically to increase the retention time for the water. This pond was raised 4' 0"


Act_Expand_Desc:
The pond was expanded vertically to increase the retention time for the water. This pond was raised 5' 3"


# Act_Pond_Unit_Liner

Act_Liner_Type_Other:
Bentonite-cement slurry wall (vertical in berm)


Act_Liner_Type_Other:
Bentonite-soil slurry wall (vertical in berm)


Act_Liner_Type_Other:
120 mil geomemebrane with 5 mil coextruded white surface layer


Act_Liner_Type_Other:
vulcanized rubber with internal fabric reinforcement


Act_Liner_Type_Other:
geotextile, one foot sand layer, geotextile, 1 foot cushion soil layer, followed by a 60-mil liner


Act_Liner_Type_Other:
Natural clay and bentonite slurry wall keyed into natural clay layer.


Act_Liner_Type_Other:
Bentonite slurry wall keyed into natural clay layer.


Act_Liner_Type_Other:
Liner type checked by accident - cannot uncheck.  There is no third layer.


# Active_Pond_Systems

Plant_Desig:
Bottom Ash Storage Area (Units 1-5)/Clearwater Pond


Plant_Desig:
Zero Discharge ATB + Coal-Limestone Pile Settling Ponds


Plant_Desig:
Coal Ash Disposal Facility Stormwater Pond


Plant_Desig:
CCP Stackout Pad contact storm runoff pond


Plant_Desig:
Ash Settling Pond #1 & #2, Ash Polishing Pond #4


Plant_Desig:
Closed Coal combustion byproduct disposal site


Plant_Desig:
Waste Disposal Area-Recycle Basin - Final Settling Basin and metal cleaning waste


Plant_Desig:
Ash Pond 1, Ash Pond 2, Gypsum Pond, Coal Pile Runoff Pond


Plant_Desig:
004 North Pond & 005 South Pond - Closed Ash Site


Plant_Desig:
Inactive Bottom Ash Disposal and Ash Water Recovery Ponds


Plant_Desig:
Coal Pile Run Off, Skimmer Pond, South Effluent Pond, North Effluent Pond, CPRO Ponds, Pond 3E


Plant_Desig:
Bottom Ash Cooling Tower Blowdown Pond. Cold Lime Softening Sludge Pond. Flyash Landfill and Coal Pile Runoff Ponds. Secure Landfill Runoff Pond.


Plant_Desig:
Unit 1 & 2 Cooling Tower Blowdown system


Plant_Desig:
Bottom Ash Pond/Primary 1/Primary 2/Secondary 1/Forebay


Plant_Desig:
Active (Ponds A and A')/Inactive  (Ponds B and C)


Plant_Desig:
Ash Ponds, Slurry Ponds, and Cooling Pond


Plant_Desig:
Primary 1-Secondary 1- Final Settling Pond


Plant_Desig:
Primary 2-Secondary 2-Final Settling Pond


Plant_Desig:
Horseshoe pit leachate  evaporation pond


# Air_Heater_Ash

aha_cmbn_other_desc:
Handled wet, with both fly and bottom ash


aha_handle_segregated_desc:
When either unit goes down for an extended outage, ash is vacuumed out and dumped into the main fly ash storage (retention) pond.


aha_handle_segregated_desc:
Ash is washed off air heater baskets and pumped to percolation pond.


aha_handle_segregated_desc:
Washed off air heater baskets and pumped to percolation pond.


aha_handle_segregated_desc:
Collected in hopper and removed with vacuum truck.


aha_cmbn_other_desc:
Bottom ash is collected in hoppers and sluiced to SPD-2 when the air heater is washed.


aha_cmbn_other_desc:
handled dry with fly ash or bed ash before being stored in the fly ash or bed ash silos


aha_handle_segregated_desc:
Air heater washwater flows to station drains and is then pumped to the Pond-1 (Primary Pond)


aha_handle_segregated_desc:
Air Heater wash enters POND-1 via sump pumps


aha_handle_segregated_desc:
Air Heater wash enters POND-1 Via sump pumps


aha_handle_segregated_desc:
Air Heater wash entersPOND-1 via sump pumps


aha_cmbn_other_desc:
This unit does not have air heater ash collection


aha_handle_segregated_desc:
"cold-side" air heater - ash is not ever combined with fly or bottom ash.  Air heater ash is emitted through the stack to the atmosphere.


aha_cmbn_other_desc:
Unit 2 primary air heater ash combines with economizer ash and is sluiced wet to SPD-1 (Pond A), Unit 2 secondary air heater ash combines with flyash and is conveyed dry to the Landfill-1.


aha_handle_segregated_desc:
Collected separately and reinjected into boiler


aha_cmbn_other_desc:
Handled dry with fly ash and bottom ash - mixed in ash silo


aha_cmbn_other_desc:
Air heater ash equipment combined with economizer - handled with fly ash sluicing.


aha_dest_other_desc:
Used for flowable fill off site and in a cement kiln.


aha_handle_segregated_desc:
Air preheater ash is collected in small hoppers and is removed via sluicing when the air heater is washed.


aha_handle_segregated_desc:
Vacuum Truck cleans out hoppers and transfers to Landfill-1 approximately every 18 months.


aha_handle_segregated_desc:
Wet sluiced to SPD-5, the Coal Pile run-off pond.


aha_handle_segregated_desc:
When the unit comes offline, the heater is washed to remove any ash that may have collected in the area.


aha_handle_segregated_desc:
Periodically washed with a high pressure system

aha_cmbn_other_desc:
Washed to station sump, then pumped to secondary ash basin


aha_handle_segregated_desc:
Periodically washed with a high pressure system.

aha_cmbn_other_desc:
Washed to station sump, then pumped to secondary ash basin.


aha_handle_segregated_desc:
loaded into dumpster for landfill disposal


aha_handle_segregated_desc:
Wet sluiced to SPD-5, the Coal pile run-off pond.


aha_cmbn_other_desc:
Air heater ash is not collected.  Ash on the air heater is cleaned using steam sootblowers and re-enters the secondary air flow and goes back into the boiler.


# Ash_General

unusable_type:
dedicated wildlands used for mitigation, buffer lands obscurring the publics's view of the site, and fallow lands.


unusable_type:
wetlands, settling basins, cooling canal


other_type_1:
Confined disposal facility (intake maintenance soil)


other_type_2:
Land adjacent to existing city infrastructure


unusable_type:
wetland, floodplain, cultural resources areas


unusable_type:
settling pond, narrow strip of land next to the river


other_type_1:
undeveloped, land purchased because of Ash Slide


other_type_2:
switchyard, combustion turbines and coal yard


unusable_type:
disch. canal; purchased property (adjacent residences)


other_type_1:
Gypsum Stack, (2) Red Water Ponds, (2) Chem Ponds- Fe & Cu, Limestone Pond, Coal Pile Storage, Coal Pile Runoff Pond


other_type_1:
Dry stack ash, coal yard runoff pond, chem pond, gypsum pond,coal storage area, laydown areas, construction areas.


unusable_type:
conservation land, cultural resources, wetland, railroad, roadways


other_type_1:
Transmission right of way, Monticello Employee Park and Dam


other_type_1:
hunting area purchased for industrial expansion but used for recreation at this time.  Portion is unusable due to location in floodplain.


other_type_1:
permitted, yet to be developed, ash landfill area


unusable_type:
Cooling Reservoir, Dishcarge Canal and Hot Pond, Dam

other_type_1:
Transmission right of way, Gas Well Development


unusable_type:
Buffer on west end from residential property


unusable_type:
Wetlands, Stormwater detention pond, borrow pit


other_type_1:
coal, limestone, bottom ash, filter cake, & gypsum storage


other_type_2:
Forrest, Farm Ground & Commerical Property


other_type_1:
Undeveloped Land, not contiguos to plant site


other_type_2:
Stormwater, Aquaculture, and Sediment Ponds, and Dredged Spoil Site


other_type_1:
Emergency ash storage area and waste water ponds


unusable_type:
cooling reservoirs and transmission corridors


unusable_type:
process ponds, stormwater retention ponds, raw water reservoirs


unusable_type:
No determination made as to whether an area is "unusable."


other_type_1:
railroad, coal pile, drainage ditch, shelterbelts, etc.


other_type_1:
Wastewater Holding Ponds and lime sludge ponds


other_type_1:
Ponds (raw water and on-site water management)


unusable_type:
raw water reservoir, surface waters, railroad, process ponds


unusable_type:
wetland, cultural resources, cooling pond, switchyard

other_type_1:
coal yard, coal pile pond, bottom ash screening/storage


other_type_1:
structural fill and bottom ash site/coal pile


unusable_type:
Area "reserved" for future landfill plus Wetlands/forested areas


unusable_type:
process, makeup, and raw water ponds, and perimeter buffer lands


unusable_type:
wetlands, buffer, right of way, Lake Juliette (3600 acres)


unusable_type:
Cooling Reservoir, Discharge Canal, Dam and Spillway

other_type_1:
Transmission Right of Way, Laydown Area, State Park


other_type_1:
Raw Water Settling Basin, FGD Ponds and Clear Water Ponds


other_type_1:
Station WWT lagoons (6.1) and SPD-4 Landfill Sed Pond (4.8)


other_type_2:
undeveloped land about 7 miles from main plant


other_type_1:
Intake channels, discharge chanels, unused and undevelped land


unusable_type:
Wetlands, uneven terrain, distance from station


unusable_type:
land leased to city for recreation & muni  WWTP


unusable_type:
Hwy R/W, rough terrain, flood area, wetland


other_type_1:
Storm water basins (1.2) and New and used equipment storage (1.5)


other_type_2:
buffer zone used for agricultural purposes


unusable_type:
Cooling Reservoir, Dam and Spillway, Discharge Canal

other_type_1:
Transmission Right of Way, State Park, Employee Park and Island, Laydown Area


unusable_type:
coal pile, stormwater runoff ponds, roads


other_type_1:
Laydown area, temp maintenance area, unused open land


unusable_type:
Wetland, cooling canal, settling basins, stream


unusable_type:
Wetlands, wildlife reguge, archiological site, conservancy

other_type_1:
Stormwater sedimentation basin, transmission powerlines and easements, underground utilities


other_type_1:
Unused, undeveloped land and access roads


unusable_type:
Archaeological, cooling dam, and plant out let


other_type_1:
New and used equipment storage and storm water basin


unusable_type:
Wetlands, Forest Conservation, Critical Area, Historic Site


unusable_type:
Cooling lake, intake channels, floodplain


unusable_type:
Coal Pile, Railroad loop, Off Mesa, Lake Pump Pumping Station, Lake Pump Power Lines, Lake Pump Road, Lake Pump ROW, Water line to Lake ROW, Ash diposal raod & ROW

other_type_1:
Evaporation Ponds (Active & Inactive, NOT Closed)


other_type_1:
Undeveloped acreage for non-industrial use


unusable_type:
boat slip, wet area N&W of ash landfill, & plant discharge


other_type_1:
Iron Cleansing Pond, Cu Pond, Coal Storage Area


other_type_1:
Chem Pond, Coal Pile, Coal Pile Runoff Yard


other_type_1:
Unused Company Owned Land (Intake/discharge channels, rail track, etc)


unusable_type:
Wetlands, streams, steep slopes, treatment ponds, historical site


unusable_type:
wetlands, power line corridors, steep hill wooded areas


unusable_type:
Flood Plains / Wetlands / Transmssion lines / Ohio River

other_type_1:
Woody vegetation/ borrow area/ flood plain/ archeological site/ trails


other_type_1:
Coal pile storage, Coal pile runoff pond, Copper pond, Iron pond, Ammonia Retention Pond, Borrow Area, Fly Ash Dry Stack


# BMPs_Pond_Info

Pond_Ovrflw_desc:
7//7/2007 - Mechanical failure of Valve and Excessive rain over 7 days, 7/10/2007 - Excessive 24 Hour rain fall, 5/11/2009 - Excessive 3 day rain fall.


Pond_Ovrflw_desc:
12/12/1995 - Discharge Pipe Leak, 12/22/1996 - Discharge Pipe Leak,9/11/1998 - Operator Error,7/19/2000 - Discharge Pipe Leak,12/20/2004 - Discharge Pipe Leak,7/1/2006 - Discharge Pipe Leak


Pond_Ovrflw_desc:
experienced a localized  500 year flood event in October 2005.   Suck Creek washed out railroad track and flooded the holding pond.   Water over topped the dike.


Pond_Ovrflw_desc:
2/5/99 ash pond discharge weir had been raised.  As the pond level increased, water was able to infiltrate through the dike.


Pond_Ovrflw_desc:
Overflows due to precipitation and/or operational upsets with this former in-service pond system.


Pond_Ovrflw_desc:
August 12, 2010; stormwater runoff routed to leachate pond (see comment).


Pond_Ovrflw_desc:
4-8-2000, Coal Pile overflowed due to an incorrect valving process.


Pond_Ovrflw_desc:
5/2009 overflow due to heavy rains, 7/2009 overflow due to heavy rains, and 1/2010 overflow due to multiple plant trips at SEU-4


Pond_Ovrflw_desc:
SPD-2 overflowed twice since 1995 due to very large rainfall events. It overflowed once in 1997 and once in 2007.


Pond_Ovrflw_desc:
There was a discharge of ash slurry water on December 1, 2000 due to the mechanical failure of an isolation valve which caused water from the ash pond to be siphoned back and discharged through the cooling water intake/discharge tunnel into Lake Sinclair.  Written notification was provided to Georgia EPD on December 8, 2000.


Pond_Ovrflw_desc:
Approximately 7 inches of rain fell, which was greater than the 25 year, 24 hour storm event due to hurricane Floyd on September 16, 1999 during construction of the landfill.


Pond_Ovrflw_desc:
2/22/2009 Leakage around piping from installation of new WWT system caused untreated water to be discharged to river.  Inflow was stopped, lagoon pumped down and repair performed without incident.


Pond_Ovrflw_desc:
9/22/08 experienced > 10yr/24hr storm event (TS Fay)


Pond_Ovrflw_desc:
10/30/2001; experienced significant amount of storm water over a breif period of time


Pond_Ovrflw_desc:
presumed overflow during hurricanes, no specific data because plant is shut down and evacuated for hurricanes


Pond_Ovrflw_desc:
Heavy rainfall and coal pile runoff plugged drain. The overflow occurred in March 2009.


Pond_Ovrflw_desc:
10/12/05; experienced a 10yr, 24 hr storm event


Pond_Ovrflw_desc:
4/16/07; experienced a 10yr, 24 hr storm event.  01/17/06; experienced a 10yr, 24 hr storm event and transfer pump malfunction.                                  10/09/05; experienced a 10yr, 24 hr storm event. 6/16/05; experienced a 10yr, 24 hr storm event.   9/22/04; experienced a 10yr, 24 hr storm event


Pond_Ovrflw_desc:
April 2009, breaker to transfer pump tripped during rainfall event allowing pond to overflow.


Pond_Ovrflw_desc:
5/1/2008 - exceeded the 10 year 24 hour event


Pond_Ovrflw_desc:
12/1/2008 Problems with construction of new WWT system caused pond to overflow through emergency overflow.  Inflow to pond was stopped and situation remedied without further incident.


Pond_Ovrflw_desc:
No overflow of material over dike structure has occured.  In 1999 a failure occured in the elbow of outfall pipe material.  Occurred in 1999.


# Btm_Ash_Dry_Handling

btm_change_other_desc:
Bottom ash wet handling possible.  Sifting fly ash may change to vacuum system to a mechanical conveyance system.


btm_change_other_desc:
The facility is being converted from coal to wood biomass combustion, ash system for wood combustion to be determined


btm_change_other_desc:
Currently evaluating conversion to dry bottom ash


btm_change_other_desc:
Currently evaluating dry bottom ash conversion


btm_change_other_desc:
likely this facility will cease operating as a coal fired plant


btm_change_other_desc:
Arapahoe will stop burning coal at end of 2013


btm_change_other_desc:
Possible switch from wet vacuum to dry vacuum


btm_change_other_desc:
Hunlock's Coal fired boiler shut down permanently on May 22, 2010. UGI is constructing a new gas combined cycle unit at the existing Hunlock Site.


btm_change_other_desc:
coal is no longer being burned - virtually no bottom ash will be produced.


btm_both_other_desc:
Multiple boilers feed the SE Unit. One boiler has a wet bottom ash handling system and is operated 270 days/year. The other three boilers are dry bottom.


btm_change_other_desc:
addition of dewatering equipment for solids removal


btm_change_other_desc:
method to be determined to eliminate storage in impoundments


btm_change_other_desc:
Decreased use of wet bottom ash handling depending on future ash market and regulations


btm_change_other_desc:
use SE Unit-2 dry fly ash system to convey fly ash to Silo 1 (intermediate storage)


btm_change_other_desc:
This plant is scheduled to be retired in 2014.


btm_change_other_desc:
Plant expected to be placed in cold reserve in 2010.


btm_change_other_desc:
A study is underway, with conclusions pending.


btm_change_other_desc:
#5 turbine will be retired by December 31, 2020


btm_change_other_desc:
#4 turbine will be retired by December 31, 2020


btm_change_other_desc:
#3 turbine will be retired by December 31, 2020


btm_both_other_desc:
Wet sluice system converted to dry mechanical drag chain system.

btm_mod_other_desc:
No modification required. New dry bottom ash system has full capacity


btm_new_infra_desc:
Complete boiler bottom rebuild with all associated dry bottom as conveying and storage system


# Btm_Ash_Dry_Installation

btm_dry_cost_est_not_instl_explain:
No funds were approved so final bids were not requested.


btm_install_phys_other_desc:
Replacement of seal plates on bottom of boiler


btm_dry_cost_est_instl_explain:
Estimate attached as EPA Questionnaire C3-26

btm_install_phys_other_desc:
Amendment to State Power Plant Certification


btm_install_phys_other_desc:
Amendment to State Power Plant certifixcation


btm_dry_cost_est_not_instl_explain:
Please see Sect. 2.3 for installation cost of Unit 123 Ash handling systems.


btm_dry_cost_est_not_instl_explain:
A rough plant estimate was done with input from possible suppliers.  The retrofit cost was estimated to be $10 million for the entire plant.


btm_dry_cost_est_instl_explain:
Budgeted costs are estimates based upon actual installation costs of Units 1 & 2 dry bottom ash handling systems (2005 & 2002).  No engineering or cost estimates have been completed.

btm_dry_cost_est_not_instl_explain:
Budgeted costs are estimates based upon actual installation costs of Units 1 & 2 dry bottom ash handling systems (2005 & 2002).  No engineering or cost estimates have been completed.


btm_dry_cost_est_not_instl_explain:
An engineering study has been commissioned, but is not yet complete.  Therefore, documentation is not yet available.


btm_dry_cost_est_not_instl_explain:
Dry bottom ash handling system for unit 4 was installed in 2005 by United Conveyor Corporation.  Bid packets and engineering estimates are not available at this time.


btm_dry_cost_est_instl_explain:
Conversion to biomass firing is on HOLD pending issuance of IB MACT regulations.  Costs will be finalized after issuance.

btm_dry_cost_est_not_instl_explain:
Conversion to biomass firing is on HOLD pending issuance of IB MACT regulations.  Costs will be finalized after issuance.


btm_dry_cost_est_not_instl_explain:
The dry bottom ash system was installed April-2009. The actual cost of installation was $10,500,000.00.


btm_dry_cost_est_instl_explain:
The estimate is based on actual cost of installing the same system on SE Unit-1 in 2009, Total cost $10,500,000.00 (2009 dollars)

btm_install_phys_other_desc:
Construction of bunker for temporary storage

btm_install_personnel_desc:
Loading truck from bunker with front loader


# Btm_Ash_Dry_Retrofit

btm_retrofit_personnel_desc:
Training on O&M of submerged flight conveyor


btm_retrofit_personnel_desc:
Operations training for ash hadling system


btm_retrofit_phsy_other_desc:
Unknown, the system was installed by a previous owner


btm_retrofit_phsy_other_desc:
construction of new bottom ash recycle pond in 2005 after initial retrofit.


btm_retrofit_phsy_other_desc:
Both units had transition chutes added to the bottom of the throat tubes to direct ash into the drag chain. Also, eliminated the use of the dewatering bins.


btm_retrofit_phsy_other_desc:
Specific changes not available at this time; however, conveyor system was added along with storage bunker.

btm_retrofit_personnel_desc:
Additional training in management and operations personnel.

btm_retrofit_disposal_other_desc:
Temporary storage in bunker.  If not sell, haul ash to POND-1.


btm_retrofit_phsy_other_desc:
Install bunker for temporary holding of bottom ash.

btm_retrofit_personnel_desc:
loading ash from bunker to truck requires a front loader.


btm_retrofit_phsy_other_desc:
Additional truck for bottom ash disposal.

btm_retrofit_personnel_desc:
Training on drag chain and truck operation.

btm_retrofit_disposal_other_desc:
Hauling of bottom ash directly to landfill.


btm_retrofit_personnel_desc:
Training for equipment operation changes


btm_retrofit_personnel_desc:
Training for equipment operations changes


# Btm_Ash_Mech_Drag

btm_mech_drag_desc:
Drag chain and drag chain pneumatic feeder transport


btm_mech_drag_recycle_desc:
Overflow is reused to quench the bottom ash in the hopper at the bottom of boiler, flowing back from the dewatering ramp.


btm_mech_drag_desc:
Ash, as it falls into the water in the hopper section, settles, and collects between the flights of the SFC. The ash is continuously removed from the SFC as the flights move through the trough of the SFC. The ash is discharged at the end of the SFC by gravity, dropping into the pile for later removal.


btm_mech_drag_desc:
Cope uses a submerged chain conveyor made by AshTech to remove bottom ash from the furnace.  The drag chain moves the ash up an incline out of the water in the ash pit and, as the ash slowly moves up the incline, the water contained in the ash drains back into the ash pit.  The drag chain discharges the dry bottom ash into a chute through a crusher and onto a transfer conveyor which deposits the ash into the bottom ash silo.  Ash is loaded from the bottom ash silo into trucks for on-site disposal.


btm_mech_drag_desc:
A lockhopper system quenches the bottom ash and dumps bottom ash onto a mechanical drag system that conveys it to a vibrating screen, dewatering the ash. The screen transports the ash to a conveyor system.

btm_mech_drag_recycle_desc:
The wastewater is reused in the syngas scrubber to remove particulates from the fuel gas; in the makeup to the lockhopper bottom ash handling system; used for pump seal water; and used for instrument tap flushes.


btm_mech_drag_desc:
Boiler slag falls into water basin under boiler.  SSC moves ash up a dewatering slope and into trucks


btm_mech_drag_desc:
SE Unit 2 uses a submerged drag chain conveyor to remove the bottom ash from the boiler.  Wastewater from the reverse osmosis (RO) system is used for this process.  The overflow water is recycled back to the system.


btm_mech_drag_desc:
Ash Tech drag chain conveyor, this uses a submerged conveyor that transfers to two de-watering conveyors and then an ash bunker for de-watering.  Water is returned to the wet bottom boiler sealing trough.

btm_mech_drag_recycle_desc:
The water is returned to the seal trough.


btm_mech_drag_recycle_desc:
Recycled to the make-up treatment system for use in boiler and coolig tower make-up


btm_mech_drag_desc:
The boiler uses a combination of drag chain and conveyor belt to remove ash.


btm_mech_drag_desc:
Water cooled (non-contact) mechanical screw conveyor that feeds to a drag conveyor and storage tank.


btm_mech_drag_recycle_desc:
pumped to the thickener and returned to the process as reclaim water


btm_mech_drag_recycle_desc:
recoverd and pumped to JKS 1 thickner for reuse within the process


btm_mech_drag_desc:
Submerged flight conveyro (SFC) is a chain that passes through the boiler bottom and removes the bottom ash from the quench water

btm_mech_drag_other_desc:
recycled to boiler bottom ash quench water via pond; pond is for water balance/circulation only; not treatment


btm_mech_drag_desc:
Submerged flight conveyor (designed by Sargent and Lundy)

btm_mech_drag_recycle_desc:
sent to thickner tank and water off this system returns to influent of clarifiers


btm_mech_drag_desc:
Submerged flight conveyor removes bottom ash from the boiler.


btm_mech_drag_other_desc:
Research Farm for irrigation, waste water storage pond


btm_mech_drag_desc:
mechanical drag.  BA is conveyed to a 3-sided bunker where it is loaded onto a truck and hauled to the landfill.


btm_mech_drag_desc:
United Conveyor Corp.- Bottom Ash Submerged Flight AND Economizer & Transfer Dry Flight Converyor Systems for Unit 4. The Ash Handling System is designed to convey the Pyrites, Economizer, and Bottom Ash produced by a Foster Wheeler Boiler rated at a capacity of 330 MW.  Three basic Ash Handling Systems are used to convey the Pyrites, Bottom Ash, and Economizer Ash to the Bottom Ash Bunker.


btm_mech_drag_desc:
Bottom ash is removed using screw conveyors, a collecting conveyor and a bucket conveyor.


btm_mech_drag_desc:
SCC collects ash from the hopper and transports it to the first storage pile


btm_mech_drag_desc:
Drag chain horizontal drags bottom ash from bottom screw conveyors to bucket conveyor.


btm_mech_drag_desc:
Submerged Drag Chain Conveyor that moves through a water bath to pick up the bottom ash and disposes it outside of the building.

btm_mech_drag_recycle_desc:
The water is processed through our wastewater and water treatment systems.


btm_mech_drag_other_desc:
All overflow returns to wastewater recovery system which feeds water cannons, mill pyrites, chain sprays and drag chain makeup. Overflow water that does not feed those systems overflows to SPD-2.


btm_mech_drag_desc:
quenched bottom ash is removed by submerged chain conveyor from each of five boilers; boilers are common to both generating units #1 and #2

btm_mech_drag_recycle_desc:
reused as bottom ash quench water and also used to wet fly ash as necessary if leaving site wetted, and also used as makeup water to lime slaker for spray dry adsorber (scrubber).


btm_mech_drag_desc:
Submerged chain conveyor pulls bottom ash, economizer ash, and pyrites from bottom of boiler and deposits in bottom ash bunker (OUTDOOR PILE 1).

btm_mech_drag_recycle_desc:
Water is sent back to SCC to collect pyrites, bottom ash, and economizer ash, and is continuously reused with minor water loss.


btm_mech_drag_desc:
Chain and flight conveyor system to ash silo


btm_mech_drag_desc:
Wet-trough drag chain conveyor, run for one hour every 8 hours (3hrs/day)


btm_mech_drag_desc:
Submerged chain conveyor.  The SCC drags the ash from the bottom of the slag tank.  It proceeds up an incline where excess water drains back to the tank.  It is then dumped onto a concrete pad where it is loaded into trucks for disposal.


btm_mech_drag_desc:
Mechanical screw to a drag chain conveyor to a hopper.


btm_mech_drag_desc:
Submerged Chain Conveyor.  Bottom ash is conveyed out of the bottom ash hopper on to conveyor belts and trucked to the landfill.


btm_mech_drag_desc:
Ash is removed from the grid to the ash screw coolers and drops to the ash drag chain conveyors (dry process).


btm_mech_drag_recycle_desc:
Reused as make-up water to the FGD systems


btm_mech_drag_desc:
DRAG CHAIN DRAGS AND CONVEY BOTTOM ASH INTO AN ENCLOSED BUNKER


btm_mech_drag_desc:
mechanical screw to drag chain to bucket elevator to silo


btm_mech_drag_desc:
bottom ash screw coolers - slipstick - inclined drag chain conveyor


btm_mech_drag_recycle_desc:
Wastewater overflow is discharged to Pond-3 and recycled back to the process.


btm_mech_drag_desc:
(SCC) submerged chain conveyor from bottom ash hopper to truck fill station.


btm_mech_drag_desc:
submerged chain conveyor under furnace designed for continuous operation

btm_mech_drag_recycle_desc:
Discharged into the closed cycle cooling water pond system it came from


btm_mech_drag_recycle_desc:
Utilized in the mixers on the fly ash silo.

btm_mech_drag_treat_other_desc:
Zero Discharge Wastewater Treatment Plant


btm_mech_drag_desc:
Mechanical water-cooled (non-contact) screw conveyor that feeds to a drag conveyor and storage tank.


btm_mech_drag_desc:
SCC chain conveyor to dewatering slope, through clinker grinder, on to incline conveyor, on to horizontal conveyor, to ground level storage area


btm_mech_drag_desc:
A water cooled (non-contact) mechanical screw conveyor that feeds a drag conveyor and storage tank.


btm_mech_drag_recycle_desc:
Used to wet fly ash in the ash processing unit. Also returned to cooling towe make-up


# Btm_Ash_Outages

btm_out_2007_wet_reslvd:
Unit was taken off and maintenance rebuilt door.


btm_out_2006_wet_reslvd:
Jackhammered the slag and removed the slag from the slag tanks in pieces.

btm_out_2009_wet_reslvd:
Jackhammered the slag and removed the slag from the slag tanks in pieces.


btm_out_2005_dry_resn:
Unit tripped during drag chain maintenance

btm_out_2006_dry_resn:
Unit tripped during drag chain maintenance


btm_out_2008_wet_resn:
Repair submerged drag chain conveyor idler gear.

btm_out_2008_wet_reslvd:
Replaced submerged drag chain idler gear.

btm_out_2009_wet_resn:
Repair submerged drag chain conveyor chain.

btm_out_2009_wet_reslvd:
Repaired chain links on submerged drag chain conveyor.


btm_out_2005_dry_resn:
submerged flight conveyor jammed and/or broken(7 days), submerged flight conveyor (SFC) chain broken trying to dislodge a large piece of uncombustable material (4 days), large piece of uncombustable material wedged on SFC chain (3 days)

btm_out_2005_dry_reslvd:
cleared jam and/or repaired, uncombustable piece removed and chain repaired, uncombustable piece removed

btm_out_2007_dry_resn:
material jam tripped conveyor off due to hydraulic pressure (9 days), large piece of uncombustable material tripped SFC on hydraulic pressure (4 days), large piece of uncombustable material tripped the SFC causing the hydraulic pump to lose pressure and SFC stopped (5 days)

btm_out_2007_dry_reslvd:
cleared jam and re-started conveyor, uncombustable material removed and bottom ash removal system restarted, uncombustable materail removed and bottom ash removal system restarted.


btm_out_2005_wet_resn:
SE Unit 1(Q1)  Motor coupling clinker grinder element 0.5 day/Q1 Bad bearings on clinker grinder 1 day


btm_out_2005_dry_resn:
Forced outage, unable to remove bottom ash from the boiler, high boiler inventory

btm_out_2005_dry_reslvd:
Forced outage to remove bottom ash manually

btm_out_2006_dry_resn:
Forced outage, bottom ash downcomer between the boiler and bottom ash removal screw cooler pulled apart.

btm_out_2008_dry_resn:
Maintenance outage, bottom ash downcomer issue


btm_out_2005_wet_resn:
Bottom Ash Clinker Grinder had coal impeller stuck in it. Could not grind ash which caused system to back up and block ash gate from closing

btm_out_2005_wet_reslvd:
Brought Unit offline to clear coal impeller from the ash ginder.


btm_out_2008_wet_resn:
1. Faulty coal impeller stuck in bottom ash grinder. Could not properly sluice bottom ash. 2. Slag build up in weir box (Slag)

btm_out_2008_wet_reslvd:
1. Brought unit offline and cleared coal impeller from the ash grinder. 2. Washed out weir box, and cleared slag from SSH Tubes + Roof Tubes


btm_out_2006_wet_resn:
Repair submerged drag chain conveyor chain.

btm_out_2006_wet_reslvd:
Repaired chain links on submerged drag chain conveyor.

btm_out_2007_wet_resn:
Repair submerged drag chain conveyor chain.

btm_out_2007_wet_reslvd:
Repaired chain links on submerged drag chain conveyor.


btm_out_2009_wet_reslvd:
Replaced submerged drag chain conveyor chain.


btm_out_2007_dry_resn:
Drag chain problems in the submerged chain conveyor system.

btm_out_2007_dry_reslvd:
Repaired drag chain and returned system to service.


btm_out_2007_wet_reslvd:
Explosive cleaned slag tank and removed material.

btm_out_2008_wet_reslvd:
Explosive cleaned slag tank and removed material.


btm_out_2008_wet_resn:
Sluice Jet Sprays impacting water wall causing short term overheat of boiler tubes (4 separate incidents). This outage is only for SE Unit-3.

btm_out_2008_wet_reslvd:
After repetative failures of same tubes a water jet was observed impacting the water wall tube


btm_out_2008_wet_resn:
Unit was derated for 8 hours due to failure of hydraulic cylinder on ash hopper door


btm_out_2005_dry_resn:
BA chain grate derailed because of falling clinker

btm_out_2005_dry_reslvd:
Put chain grate back on idler and added emergency stop button to idler


btm_out_2009_wet_reslvd:
Removed foreign objects from clinker grinder.


btm_out_2009_wet_resn:
Startup delayed due to material handling pumps not available and bottom ash hoppers full up and onto boiler slope tubes.


btm_out_2009_dry_resn:
The bottom of boiler was full of bottom ash; this required shutdown of boiler to clean out bottom ash.

btm_out_2009_dry_reslvd:
Removed bottom ash and improved boiler fuel to air control.


btm_out_2009_wet_resn:
Heavy bottom ash bridge inside of the boiler.

btm_out_2009_wet_reslvd:
Heavy bottom ash was removed by blasting.


btm_out_2008_wet_resn:
Slag bridging over the lower slope opening into the ash bottom and inability to remove ash

btm_out_2008_wet_reslvd:
Fuel Quality investigation, installation of additional FEGT probes, Fuel and Air balance, limestone addition, established combustion team, pulverizer surveilance


btm_out_2006_dry_resn:
separated chain for the bottom ash removal system


btm_out_2008_dry_resn:
A transition chute breaker bar fell out of place from the transition chute area down into the deasher.  Ther bar got lodged and caused the chain to pull unevenly and eventually to break.

btm_out_2008_dry_reslvd:
Replaced missing breaker bars and welded them in place.


btm_out_2005_wet_resn:
Bottom ash-built bridge, collapsed & steam tripped flame scanners - loss of flame

btm_out_2006_wet_resn:
Bottom ash bridge,  bottom ash size exceeding design capacity (clinker), bottom ash bridge,  bottom ash bridge


btm_out_2006_dry_reslvd:
New chain link welded in place or chain placed back on track.

btm_out_2008_dry_reslvd:
New chain link welded in place or chain placed back on track.

btm_out_2009_dry_reslvd:
New chain link welded in place or chain placed back on track.


btm_out_2007_wet_resn:
Bottom ash bridge formation in B hopper collapsed, creating a vacuum which extinguished the flame.

btm_out_2007_wet_reslvd:
Remove excess bottom ash and relight fire.


btm_out_2007_wet_resn:
Lump in slag tank.  Slag removal problems.

btm_out_2009_wet_resn:
Slag transport problems and recycling system line problems.


btm_out_2009_wet_resn:
Unit down to remove IK lance from Bottom Ash hopper.


btm_out_2005_dry_resn:
The chain had come off of one of the Submerged idlers of the Drag Chain.

btm_out_2008_dry_resn:
The chain had come off of one of the Submerged idlers of the Drag Chain one time and the chain had jumped off of the head and tail sprockets the other 3 times..


btm_out_2005_wet_resn:
A bottom ash drip screen fell into 3B Bottom Ash hopper.


# Btm_Ash_Sluicing

btm_sluice_other_desc:
Raw water is the design sluice water source, therefore limiting criteria for an alternative sluice water source in undetermined.


btm_sluice_recyc_decs:
Recycled via surge tank back to FGD Scrubber for mixing with recycle ash to form scrubber reagent and reused during bottom ash sluicing.


btm_sluice_recyc_decs:
Dewatering bin, settling tank and surge tank settle out the solids and recirculate the water back to the plant process.


btm_sluice_recyc_decs:
Sluice water is returned to the bottom ash sluice system to be reused in sluicing operations.


btm_sluice_recyc_decs:
Ash settles out Ash Pond (SPD-2); water is returned for reuse as combined ash sluice.


btm_sluice_recyc_decs:
Recycled through a settling tank and surge tank back to be used for bottom ash transport


btm_sluice_recyc_decs:
The ash sluice water is de-watered  from the bottom ash in the de-watering bin; any remaining solids in the water settle out in a concrete basin. Then the water is used for the sluicing the next unit.


btm_sluice_recyc_decs:
Overflow from hydrobin to settling tank to re-circulation tank.  Bottom ash sluice pump suction comes from the re-circulation tank.


btm_sluice_recyc_decs:
Reused in process of sluicing bottom ash to dewatering bins


btm_sluice_other_desc:
Do not have any chloride limits for ash sluice water.


btm_sluice_recyc_decs:
The wet bottom ash sluice system is a closed loop system.


btm_sluice_recyc_decs:
The wet bottom ash system is a closed loop system.


btm_sluice_other_desc:
There are no restrictions on the quality of water used for sluicing bottom ash


btm_sluice_recyc_decs:
Closed Loop System - Reused to sluice additional ash


btm_sluice_recyc_decs:
Closed Loop System - Reuse to sluice additional ash


btm_sluice_recyc_decs:
Closed Loop System - Sluice water held in surge pits 400,000 gallon total capacity


btm_sluice_other_desc:
An engineering evaluation would be necessary to determine alternative water source(s).


btm_sluice_other_desc:
no known limitation on chlorides or solids


btm_sluice_recyc_decs:
Bottom ash handling system is a closed-loop system.  Water losses are limited to evaporation and water removed with ash from dewatering tanks.  All remaining sluice water is recycled back into bottom ash handling system following dewatering of bottom ash.


btm_sluice_recyc_decs:
Bottom ash handling system is a closed-loop system.  Water losses are limited to evaporation and water removed with ash from dewatering tanks.  All remaining sluice water is recycled back into system following dewatering of bottom ash.


btm_sluice_other_desc:
No criteria developed for sluice source water.  Chlorides and Solids are not monitored.


btm_sluice_recyc_decs:
Sent to an ash settling basin and recycled to the bottom ash system.  This is a closed loop system in which the water is recycled.


btm_sluice_source_other_desc:
boiler blowdown & floor drain waste water are directed to POND-1and become POND-1 effluent, mill reject sluice is same as ash sluice is same as POND-1 effluent,once through cooling water is same as IN-Makeup


btm_sluice_recyc_decs:
Sluiced Bottom Ash is transferred to a  decant tank where a portion of the water is decanted to the surge tank and reused in the sluicing process


btm_sluice_source_other_desc:
Refractory Cooling Water, Storm Water, Plant Washdown Water, Effluent from Sewage Treatment Plant


btm_sluice_recyc_decs:
Bottom ash sluice water is recycled for use in the flyash handling system.


btm_sluice_recyc_decs:
bottom ash sluice water is dewatered in a dewatering system and the decanted water is recycled


btm_sluice_other_desc:
An engineering evaluation would be required to evaluate the acceptability of alternative water source(s)


btm_sluice_recyc_decs:
mixes with other process water and is disposed to POTW


btm_sluice_recyc_decs:
This water is in a closed loop system, ash is dewatered and water is reused.


btm_sluice_other_desc:
Wood River Power Station has no water quality restrictions or criteria on the water it uses for sluicing bottom ash.


btm_sluice_recyc_decs:
Bottom ash water is immediately recycled back to the ash sluice system after dewatering with losses made up from raw intake water.


btm_sluice_recyc_decs:
The closed cycle bottom ash system consists of dewatering bin, settling tank and surge tank.  Bottom ash sluice water is continuously reused in a closed cycle via the surge tank.


btm_sluice_recyc_decs:
Dewatering bin, settling tank and surge tank settle out the solids and recirculate back through plant process.


btm_sluice_recyc_decs:
Ash is sluiced to one side of a bottom ash transfer pond to settle out.  The water flows from the opposite side of the bottom ash transfer pond into the recycle pond. From there it is pumped back to the plant to be re-circulated.  FYI:  There are two bottom ash ponds on site, one is in use while the accumulated bottom ash is excavated from the other.


btm_sluice_other_desc:
pH  6-9, Additional corrosion criteria includes a Larson-Skold index of less than 1.2 and a Puckorious index of less than 7.  Also, the aggressiveness of a water source toward ash sluice system components (primarily ferritic iron and steel) is a complex function of numerous variables, thus, individual cases must  be evaluated based on the totality of site-specific water conditions.


btm_sluice_recyc_decs:
The ash pond recirculation supplies recycled sluice water from the reclaim pond to the bottom ash removal system and several other plant services.


btm_sluice_recyc_decs:
pumped back to ash handling system from sump


btm_sluice_recyc_decs:
Dewatering bin overflow is routed through a settling tank and surge tank and pumped back to the boiler bottom ash hopper.


btm_sluice_recyc_decs:
Bottom ash sluice water is recycled through the ash water recirculation pumps from Pond-1 back to the process.


btm_sluice_recyc_decs:
Dewatering bins overflow to a settling tank which discharges to a recirculating tank for recycling


btm_sluice_recyc_decs:
Ash sluice is recycled after leaving the settling cells.  It is collected in the recycle cell of the ash pond and returned for reuse as POND -1 Effluent.


btm_sluice_recyc_decs:
Bottom ash sluicing is a closed loop system. Ash slurry pumped from bottom of boiler to hydrobin, decanted water recycled back to system.


btm_sluice_other_desc:
N/A.  River water used.  Do not test water.


btm_sluice_recyc_decs:
Used in a recirculation loop - (IE is returned to the Ash water storage tank)


btm_sluice_recyc_decs:
Wet bottom ash is pumped to Ash Pond 2 where ash settles out water flows to Ash Pond 1 and is returned for reuse as combined ash sluice.


btm_sluice_recyc_decs:
Bottom Ash System #1, Unit 3 FGD, Washdown, Pump Seals


btm_sluice_recyc_decs:
The Tank Farm is the point where the bottom ash is separated from the sluice water and recycled back through the bottom ash system.


btm_sluice_other_desc:
Limitations have not been established for this water source


btm_sluice_recyc_decs:
Water from ash disposal pond recycled to CTB pond for ash sluicing.


btm_sluice_source_other_desc:
IWT/River Water as make up (usually zero).


btm_sluice_recyc_decs:
Water is decanted into an ash water basin, ph adjusted, and sent to the clearwell for reuse.


btm_sluice_source_other_desc:
raw well water, treated well water, misc. water treatment wastewater

btm_sluice_recyc_decs:
Reused within the bottom ash sluice system


btm_sluice_recyc_decs:
Water from dewatering tank is put directly back into bottom ash sluice system as makup.


btm_sluice_recyc_decs:
The water is recycled back to the bottom ash system.


btm_sluice_recyc_decs:
Decanted water is contained in a closed loop system.


btm_sluice_recyc_decs:
Goes to an overflow tank decanted from a hydrobin, or through the screens on the hydrobin.


btm_sluice_recyc_decs:
returned to bottom ash sluice - must go through a pond, but the pond is for water inventory management not for treatment.


btm_sluice_recyc_decs:
must go through a pond, but the pond is for water inventory management not for treatment.


btm_sluice_recyc_decs:
The ash pond recirculation system supplies recycled sluice water from the reclaim pond to the bottom ash removal system and several other plant services.


btm_sluice_recyc_decs:
Cooling Tower Blowdown is sent to a tank and combined with Recycled ash water to make up the bottom ash sluice water


btm_sluice_other_desc:
Limitations have not been set for ash sluice


btm_sluice_recyc_decs:
Seal trough cooling, boiler blowdown cooling, and bottom ash cooling.


btm_sluice_recyc_decs:
The bottom ash is conveyed to the bottom ash impoundment by sluicing from the bottom of the boiler as indicated in the response.  The sluice water is part of a closed loop sytem so that after settling, the water is re-used to sluice more water to the bottom ash impoundment.


btm_sluice_recyc_decs:
Sluice water is pumped from pond back to system once the ash settles out.


btm_sluice_source_other_desc:
Bottom Ash Sluice and Ash Ditch and/or ADR-1 Sump

btm_sluice_recyc_decs:
Continuous recirculation - to pyrites transfer tank - to ash pump - to Dewatering Bins - to settling tank…


btm_sluice_source_other_desc:
SPD-5, mine depressurization water, low volume waste,


btm_sluice_recyc_decs:
Bottom ash is sluiced to a dewatering silo.  As silo dewaters bottom ash through settlement the water is drawn off the top and to a storage tank for reuse within the closed loop bottom ash sluicing system.


btm_sluice_recyc_decs:
Recycled back into closed loop bottom ash sluice system


# Btm_Ash_Solids_Rmvl

btm_slds_rmvl_recycle_desc:
Dewatering bin drains into settling tank, settling flows to surge tank and water is recirculated back to the plant process.


btm_slds_rmvl_recycle_desc:
Reused to sluice bottom ash on the next unit scheduled for sluicing


btm_slds_rmvl_dest_other_desc:
Decant water from dewatering bins is sent to ash booster pumping station where it mixes with economizer ash sluice and is pumped to the ash pond on all SE Units.


btm_slds_rmvl_recycle_desc:
Delivered to the holding pond which discharges to the clear pond where the bottom ash sluice water pumps are located.


btm_slds_rmvl_recycle_desc:
Closed Loop System - Sluice water held in surge pits 400,000 gallon total capacity


btm_slds_rmvl_recycle_desc:
to settling bin, to surge tank, to re-use for bottom ash sluicing, and some is used for dust control at landfill and coal pile


btm_slds_rmvl_recycle_desc:
recycled through pond system for FGD, bottom ash sluice, and other processes


btm_slds_rmvl_recycle_desc:
Closed Loop System - Reused to sluice additional ash


btm_slds_rmvl_treat_other_desc:
Grit Chamber (Conical shaped concrete basin)


btm_slds_rmvl_other_desc:
Bottom Ash Sluice Troughs and Sand Screws


btm_slds_rmvl_recycle_desc:
Recycled through a settling tank and surge tank back to be used for bottom ash transport


btm_slds_rmvl_recycle_desc:
It is reused in the process of sluicing bottom ash


btm_slds_rmvl_recycle_desc:
Dewatering bin drains into settling tank, settling flows to surge tank and water is recirculated back through plant process


btm_slds_rmvl_dest_other_desc:
Bottom ash is disposed of in our landfill with very little water with it.


btm_slds_rmvl_recycle_desc:
Water from the dewatering bins is eventually sent to a surge tanks, where ash sluice pumps reuse the water.


btm_slds_rmvl_recycle_desc:
Used in dry FGD and mixed with recycle ash to make recycle ash slurry.  Reused to sluice bottom ash


btm_slds_rmvl_dest_other_desc:
reused for dust suppression, coal washdown system, and/or in the scrubber system


btm_slds_rmvl_dest_other_desc:
returned to SPD-4, for eventual reuse as bottom ash sluice.


btm_slds_rmvl_dest_other_desc:
returned to bottom ash pond (SPD-4), for eventual reuse as bottom ash sluice.


btm_slds_rmvl_recycle_desc:
The system is a closed loop system so the water goes directly back to the wet sluice bottom ash system.


btm_slds_rmvl_recycle_desc:
Reused in bottom ash handling system following solids removal


btm_slds_rmvl_recycle_desc:
Bottom ash water recirculates through the bottom ash sluice system, between the ash pit, to the hydrobins, to the alligator pit and back.  The water level in the bottom ash pit (bottom of boiler) is maintained with water from the alligator pit, which receives wastewater from several sources throughout the Station (floor drains, hydro bin decant, etc.).  Because bottom ash sluice is recycled throughout the system, there is no way to estimate the volume of water that overflows from the hydrobins, or is used to maintain water level in the ash pit.  Any overflow from the alligator pit is directed to the wastewater treatment system.


btm_slds_rmvl_recycle_desc:
Wastewater is recycled back to bottom ash sluicing system.


btm_disp_other_desc:
Stored in/transferred to a pond/impoundment NOT reported in Table A-4: Sherco Ash Pond


btm_slds_rmvl_recycle_desc:
Dewatering bin overflow is routed through a settling tank and surge tank and pumped back to the boiler bottom ash hopper.

btm_slds_rmvl_treat_other_desc:
Chemical Precipitation, Clarification, Sand Filtration


btm_slds_rmvl_recycle_desc:
Reused in ash sluice system as described above


btm_slds_rmvl_other_desc:
Lammella gravity settler aided by polymer


btm_slds_rmvl_recycle_desc:
Water is decanted in separation tanks and put back into the bottom ash solids removal stream.


btm_slds_rmvl_recycle_desc:
It goes back to the settling and surge tanks, then back to the high pressure pumps.


btm_slds_rmvl_dest_other_desc:
sent to bottom ash pond (SPD-4), for reuse as bottom ash sluice.


btm_slds_rmvl_recycle_desc:
The water is discharged to the lagoon, which feeds into our jockey pump system.


btm_slds_rmvl_recycle_desc:
returned to bottom ash surge tank from sump


btm_slds_rmvl_recycle_desc:
Dewatering bin overflow is rounted through a settling tank and surge tank and pumped back to the boiler bottom ash hopper.


btm_slds_rmvl_dest_other_desc:
Effluent from pond system reused in plant, including for bottom ash sluice and dry fly ash system hydroveyor water


btm_slds_rmvl_treat_other_desc:
Grit chamber (conical shaped concrete basin)


btm_slds_rmvl_dest_other_desc:
sent to bottom ash pond (SPD-4), for eventual reuse as bottom ash sluice.


btm_slds_rmvl_recycle_desc:
Reused to sluice bottom ash on the next unit scheduled for sluicing.


btm_slds_rmvl_dest_other_desc:
Stored in SPD-3 our recycle basin for reuse in ash sluice system or transferred to SPD-1 for reuse as FGD makeup water or discharge to surface water via Outfall 004.


btm_slds_rmvl_recycle_desc:
Back to Bottom Ash Hopper to Cool Bottom Ash


btm_slds_rmvl_recycle_desc:
Dewatering bins to surge tank for reuse as sluice water


btm_slds_rmvl_recycle_desc:
Recycled back into closed loop bottom ash sluice system


btm_slds_rmvl_dest_other_desc:
Recycled in closed loop system after settling ponds


btm_slds_rmvl_recycle_desc:
The bottom ash sluice system is a closed loop system, the water is reused, after dewatering, to sluice additional bottom ash from the SE units to the dewatering silo.

btm_slds_rmvl_treat_other_desc:
Chemical precipitation, flocculation, sand filtration


btm_slds_rmvl_recycle_desc:
100% of the bottom ash sluice water is reused for cooling, filling the bottom ash hoppers, flushing the bottom ash hoppers, economizer hoppers make up, pyrites hoppers water seal, sludge pump flush water, flushing water to various systems


btm_slds_rmvl_dest_other_desc:
Closed loop system there is no wastewater.


btm_disp_other_desc:
Filters used to remove fine solids.  Fines remain in filters until filters are replaced.  Filters are not always in service - used on an as-needed basis.


btm_slds_rmvl_recycle_desc:
Water is reused in as bottom ash sluice water.


btm_slds_rmvl_recycle_desc:
(1) reused to sluice bottom ash or (2) discharges to the Ash Ditch and then re-used for sluice again.

btm_slds_rmvl_treat_other_desc:
Lost to evaporation in S-13 pond or while being used.


# Btm_Ash_Storage

storage_ID:
Stored in landfills NOT reported in Table A-6


storage_ID_other:
screening/blending area prior to ash sale; outdoor pile 1 is within Landfill 1


storage_ID_other:
removal for use as land structural fill material.


storage_ID_other:
Black Hills Corporation Mine Reclamation Area


storage_ID_other:
Stored in/transferred to a pond/impoundment NOT reported in Table A-4: Sherco Ash Pond


btm_storage_trnspt_other:
excavated w/ front end loader out of concrete pit and screened for marketing.


storage_ID_other:
Beneficial use for abandoned mine lands reclamation


btm_storage_trnspt_other:
drag chain, bucket elevator, and conveyor belt


storage_ID_other:
Transferred to pond reported by plant 4676


storage_ID_other:
Beneficial reuse as structural fill at clay mine


storage_ID_other:
one Bottom Ash silo shared by both units


storage_ID_other:
Transferred off-site for dewatering at Plant 09373


# Btm_Ash_Storage_Dest

storage_ID:
Stored in landfills NOT reported in Table A-6


storage_ID_other:
Outdoor Pile 1 for use by third party marketer


storage_ID_other:
Ash that is stored in landfill before being marketed


storage_ID_other:
Stored in/transferred to a pond/impoundment NOT reported in Table A-4: Sherco Ash Pond


storage_ID_other:
Sold to onsite contractor, processed onsite then transported off site.


storage_ID_other:
Beneficial use for abandoned mine lands reclamation


storage_ID_other:
Transferred off-site for dewatering at Plant 09373


storage_ID_other:
Tranferred to pond reported by plant 4676


# Btm_Ash_System

btm_boiler_type_other:
4 boilers, 3 that burn coal are dry, 1 that burns biomass is wet.


btm_other_desc:
United conveyor bottom ash jet.  Water nozzles wash the ash to the jet.


btm_other_desc:
Mechanical water-cooled (non-contact) screw conveyor that feeds to a drag conveyor and storage tank.


# Btm_Cnvy_Cmpnts

btm_cnvy_cmpnts_other:
Dry ash vacuum pumps, piping and collectors


btm_cnvy_cmpnts_other:
Dewatering Bottom Ash Drag Chain Conveyor


btm_cnvy_cmpnts_other:
Installing submerged chain conveyor system


btm_cnvy_cmpnts_other:
bed ash silo w/separator/collector system/exhauster


btm_cnvy_cmpnts_other:
Mechanical Dry Ash Conveyor with Chain Driven Flights


btm_cnvy_cmpnts_other:
Mechanical Wet Ash Conveyor with Chain Driven Flights


# Btm_Cnvy_General

btm_cnvy_cntrctr_instl:
Dry Ash & Wet Ash Conveyors with Chain Driven Flights, Bottom Ash Bunker, Input/Output PLC Devices, Operator's Distributed Control System, Programmable Logic Controller, Transition Hopper, Water Cooled Heat Exchangers.

btm_cnvy_cntrctr_oversee:
Contractor oversees all operation & maintenance activities with Dry Bottom Ash Handling System.


btm_cnvy_cmpnts_not_cap_costs:
Costs include the pressure blower, silo enclosure, filter/separator, rotary feeder, and some new piping and valves.  Cost does not include most piping and valves as it was installed prior to Jan. 1, 2000.


btm_cnvy_cntrctr_oversee:
Contractor is responsible for scheduling the trucks and all related transportation expenses.


# Btm_Dry_Market

btm_dry_mkt_dest:
Beneficial use for abandoned mine lands reclamation or given away for other beneficial use.


# Btm_storage_Cmpnts

btm_storage_cmpnts:
Conveyor system (e.g., air slide, bucket conveyor)


btm_storage_cmpnts_other:
Concrete storage pad for managing bottom ash


# Btm_storage_General

btm_fly_share_storage:
Section 3.4 does not need to be answered because the intermediate storage destinations began operating before 2000 and have not been modified since


btm_storage_cmpnts_not_cap_costs:
Costs include the rotary feeder, grinder, and bin vent.  Costs do not include the silo as it was constructed before Jan. 1, 2000.


btm_storage_cmpnts_not_cap_costs:
Please see C3-39, Table C-27.  All capital costs are listed there including intermediate storage costs.


btm_storage_cmpnts_not_cap_costs:
The cost of site devlopment of bottom ash at Weston is included in Part C Section 2.4 (C2-42; Table C14).


btm_storage_cmpnts_not_cap_costs:
capital cost of intermediate storage was nominal and was not tracked separately; it is included in the overall conveyance system project costs C3-39, Table C-27


btm_storage_cmpnts_not_cap_costs:
All major components of intermediate storage destination are included in the Capital Costs reported in Table C-27.


btm_storage_cntrctr_oversee:
Placement of bottom ash, grooming and managing pile, loading trucks, fugitive dust (watering and sweeping) - these are done as part of bottom ash utilization fee/subsidy.


# Btm_Trspt_Disp_General

btm_trspt_disp_cntrctr_pay_instl:
The contractor provides their own truck to haul the facility's 30-yard roll off to its final destination.

btm_trspt_disp_cntrctr_pay_oversee:
The contractor loads the 30 yard roll off onto their truck, hauls the waste to its final destination and then returns the roll off to the facility.


btm_trspt_disp_cmpnts_not_cap_costs:
No capital costs are reported in Part C for landfill development.


btm_fly_share_trspt_disp_cmpnts:
all fly ash and bottom ash destined for disposal is sluiced to pond.


btm_fly_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3, Silo 2, Landfill 2

btm_trspt_disp_cntrctr_pay_instl:
End dump trailer semi truck, leachate tanker trucks

btm_trspt_disp_cntrctr_pay_oversee:
Fuel cost, truck and trailer maintenance, insurance, ash mixer operation


btm_fly_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, Storage IDs: Silo 1, Silo 2 (Bottom ash comes from Silo 3)


btm_fly_share_trspt_disp_cmpnts:
Unit 3, 4, 5, 6, 7, 8, & 9.  Intermediate Storage silos 1, 2, & 3 can contribute fly ash.


btm_fly_share_trspt_disp_cmpnts:
Landfill-1, SE Unit-1, SE Unit-2, SE Unit-3

btm_trspt_disp_cntrctr_pay_instl:
3 each - 30 Ton Mac k Dump Trucks and 1 824 Push Caterpillar

btm_trspt_disp_cntrctr_pay_oversee:
Load bottom ash into trucks and haul to ash pile in landfill.  Maintain ash pile to approved ash storage plan.  Repair and maintain mobile equipment as needed.

btm_trspt_disp_cmpnts_not_cap_costs:
Bottom ash transport and disposal to the onsite landfill is contracted to Ashworth Transfer, a Savage Company, which is compensated a fee for ton basis.


btm_fly_share_trspt_disp_cmpnts:
SE Unit IDs - 1, 2, 3, 4, & 5   Storage IDs - None


btm_fly_share_trspt_disp_cmpnts:
Yes, but plant is charged separately for fly and bottom ash transport/disposal

btm_trspt_disp_cntrctr_pay_instl:
Nine transport trucks, one road grader, two front-end loaders, three water trucks, one diesel well pump.

btm_trspt_disp_cntrctr_pay_oversee:
Purchase and maintain equipment listed in C3-53. Also: load and unload bottom ash, drive transport trucks to and from LANDFILL-1.


btm_fly_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


btm_trspt_disp_cntrctr_pay_instl:
Contractor provides all trucks for hauling and is compensated through a subsidy for bottom ash use.

btm_trspt_disp_cntrctr_pay_oversee:
Contractor oversees all activities and is compensated through a subsidy for bottom ash use.


btm_fly_share_trspt_disp_cmpnts:
SE Unit 1 & 2   and  Landfill 1/outdoor pile 1


btm_trspt_disp_cntrctr_pay_oversee:
Retrieval from SPD-1 (Sluice Pond) and dewatering piles, and loading of railcars

btm_trspt_disp_cmpnts_not_cap_costs:
Table C-32 includes the minor modification made to the original bottom ash handling system that was operational beginning in 1981.  The modification allowed for segregation of the economizer ash from the slag in SPD-1 (sluice pond).  The modification allowed dredging of the slag from SPD-1 that is not co-mingled with economizer ash.  The remainder of the bottom ash system remains as it was operated beginning in 1981


btm_fly_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, Silo 1, Silo 2, Silo 3, Silo 4


btm_trspt_disp_cmpnts_not_cap_costs:
We use a vacuum truck to pull the bottom ash out of the silo and transport it to a land fill.  The truck is not exclusively used for this purpose and is not considered part of this system.


btm_fly_share_trspt_disp_cmpnts:
Trucks are used for both bottom ash and Fly Ash,  Bottom ash is stored on the temp pad with fly ash. SE Units 1, 2, 3, 4, Silos 1, 2, 3, Outdoor Pile-1, and Storage Building contribute fly ash to the transport and disposal system.


btm_fly_share_trspt_disp_cmpnts:
Combined: Boiler #8 fly/bottom ash (steam to SE Units-2,3,4); Boiler #9 bottom ash (steam to SE Unit-1); Silo-2

btm_trspt_disp_cmpnts_not_cap_costs:
There are no associated Capital Costs for Transport/Disposal as all ash is disposed of off-site.


# Btm_Wet_Market

btm_wet_mkt_dest:
sold to contractor who transfers the ash for multiple uses


# Carbon_Capture

CCS_type:
powder activated carbon and calcium halide injection, collected at ESP


# Carbon_Capture_Studies

CCS_process:
Membrane separation system.  CO2 separated from fluegas and fed to algae train.


CCS_process:
CO catylist installed in the HRSG gas path down stream of the SCR.  All combustion gases from the gas turbine pass through the catylist.  We do not wash on site.  No water discharge or waste generated.


CCS_process:
This is a production facility for food grade liquid CO2.  It is an MEA capture system, where the MEA is continously recycled.  A scrubber is cleaned periodically and the waste water is not discharged, but rather transported off-site as potentially hazardous waste to an approved disposal site.


CCS_process:
An injection system will inject calcium halide at the coal crusher system to oxidize mercury. Coal will be processed as usual and then mercury collected on powder activated carbon which will be collected on the ESP and end up in the fly ash waste stream. No wastewater is generated from this process.


CCS_process:
An experimental pilot scale CO2 capture system is currently being tested.  This method consists of passing flue gas through a bed of dry fly ash which creates a fluidized bed of ash.  Carbon dioxide in the flue gas reacts with minerals in the fly ash to form carbonates.  The system pulls a slip stream of flue gas from the stack inlet using a blower.  The flue gas enters a knockout vessel and then goes into a humidifying vessel.  The flue gas then enters a fluidized bed reactor vessel.  The flue gas is then returned to the electrostatic precipitator inlet duct.  Wastewater from the humidifier goes into a building floor drain and into the plant wastewater system.  There are no anticipated effects on the plant wastewater stream.


CCS_process:
Plant to be installed is a CO2 capture demonstration plant using the Mitsubishi Heavy Industries KM-CDR process. The plant is designed to capture 500 metric tons per day of CO2 from Plant Barry Unit 5. Included as part of the process is a FGD unit to trim residual SO2 from the flue gas, CO2 capture and concentration, CO2 compression equipment, and utility supply systems such as cooling towers and the like. 
The flue gas trim FGD is equipped to either utilize limestone or sodium hydroxide as a reagent, and will produce a water effluent of either sodium sulfate (caustic case) or gypsum, limestone, and dissolved solids of calcium.  
The CO2 capture portion of the process will operate with a neutral water balance, with a small effluent stream produced from an experimental wash system used to demonstrate ultra-low solvent emissions.
The cooling tower will produce a blowdown stream for control of dissolved and suspended solids which will be .


CCS_process:
Pilot test to begin in the fall of 2010.  Studying the use of solid sorbents for CO2 capture. Specific types of sorbents are not known at this time. No wastewater is expected to be generated with this pilot test nor will there be any effect on other process wastewater streams.


CCS_process:
Generally the plant consists of flue gas booster fan, FGD polisher, DCC, Absorber, Stripper, Compressor, Dehydration Plant and a variety of pumps, heat exchangers and vessels/tanks.    

See Attachment 1 for complete CO2 Capture Process Description.


CCS_process:
The specific technologies to be tested using that flue gas are undetermined at this time.  Plans are for a pilot scale facility that treats less than 0.1% of the unit's total flow.


CCS_process:
Slipstream of fluegas to membrane separator.  Return separated CO2 to fluegas.


# Clsd_Pond_Unit

Long_Monitoring_Plan:
30 year post closure care includes groundwater monitoring, erosion and vegetation inspection.


Long_Monitoring_Plan:
30 year post closure care to begin when closure completed which includes groundwater monitoring, erosion and vegeatation inspections.


Close_Desc:
Closure of sedimentation pond 1 and lining of SPD-3 was done at the same time and was part of permit renewal application.  The closed sediment pond was dewatered, dredged and then became the base for the expansion of runoff and leachate collection ditches to enter newly lined pond (SPD-3).


Long_Monitoring_Plan:
Annual groundwater monitoring of wells around landfill and bi-ennial engineers inspection of cap.


Close_Desc:
Total cost; including everythig listed above was $324, 915.  This cost was only for the portion of the pond/landfill that was active.  All other cells/ponds closed prior to year 2000 are not included

Long_Monitoring_Plan:
As per the sites Landfill Permit and Plan of Operations; long term groundwater monitoring and inspections are required.


Long_Monitoring_Plan:
long term quarterly gw monitoring required per PA residual wasted regulations for 30 years after closure.


Close_Desc:
Water remaining in the pond was evaporated through the boiler with approval from the Colorado Air Pollution Control Division.  Sediments remaining in the pond were disposed of in the on-site ash disposal facility with a Special Use Permit approved by the County.  The pond was then backfilled with clean fill from the west end of the Comanche site.


Close_Desc:
The closure process followed the steps required by the Massachusetts Contingency Plan (MCP)regulations, 310 CMR 40.0000.  The work included groundwater and soil sampling, analyses,and evaluation of human health and ecological risk.  The site was closed with a permanent Class A-3 Response Action Outcome (RAO).


Close_Desc:
It is included in the landfill closure plan.  Understanding that IDEM OLQ permit section is the regulatory authority to close out ash ponds (329 IAC 10-3-1).  In the landfill permit application on pgs 64, 81, 85 and then in the closure plan details, Duke discusses how the landfill closure itself is tied to the ash pond berms.  The Construction in Floodway IDNR permit also acknowledges that the pond is being closed and used as a landfill.  IDEM requirements in the permit were to be submitted to IDNR upon start of construction.  Each year Duke files financial assurance documents for this plan to IDEM with an update contour map of the progress of construction (this will begin once the landfill is officially open).

Long_Monitoring_Plan:
Groundwater monitoring for landfill permit compliance.


Close_Desc:
Closure process described in attached closure plan.  Closure was in-place as-is so costs were minimal (not applicble)

Long_Monitoring_Plan:
Monthly groundwater monitoring  required in facility NPDES permit, and is reported three times each year  to the Minnesota Pollution Control Agency


Close_Desc:
Material was dredged out from the pond, dewatered, mixed with ash, and hauled to Landfill-1 for disposal.  New material was brought in to fill the pond and it was turned into a parking lot.  Total cost was approx. $80,000


Long_Monitoring_Plan:
Monitoring will be of 11 down gradient and three background wells; And analyzes of ground water samples for 10 indicater constituents and two primary water quality pirameters. Sampling will take semi annually.


Long_Monitoring_Plan:
Monitoring will be of 11 down gradient and 3 background well. Semi-annual sampling will be done for 2 water quality parameters and 10 indicator analytes.


Long_Monitoring_Plan:
Monitoring will be of 11 down gradient and three bacground wells; And analyzes of ground water samples for 10 indicater constituents and two primary water quality pirameters. Sampling will take semi annually.


Close_Desc:
All material in this basin was removed and transfered to an onsite landfill (Landfill-1), under the guidance of a MA LSP. Solids were transfered to Landfill-1, and water back to WWT-1. The empty basin was filled with structrual fill material.


Close_Desc:
See atached specifications, closure report and costs.

Long_Monitoring_Plan:
See attached Arizona Department of Environmental Quality Aquifer Protection Permit.  Groundwater monitoring activities are ongoing.


Close_Desc:
A work plan was prepared to detail the procedures for solids removal from the pond area and sample underlying soils.  The solid materials were removed and disposed in the onsite landfill.  The embankment shared with the E Ponds, the haul road embankment, existing monitoring wells, and slurry walls remained in place.  After solids removal and soil sampling, the excavated areas were filled with native fill materials.  Two sections of the area were covered with an HDPE liner and used as a stormwater retention/evaporation pond.

Long_Monitoring_Plan:
Regular sampling of wells throughout the facility, including this area, is conducted under the direction of the State of Nevada.


Close_Desc:
Pond E was taken out of service in 2000 and solids transported to the landfill.  In 2003, this pond was split into two ponds (E1 and E2) and lined.


Close_Desc:
A work plan was prepared to detail the procedures for solids removal from the pond area and sample underlying soils.  The solid materials were removed and disposed in the onsite landfill.  The embankment shared with Pond F remained in place.  After solids removal and soil sampling, the excavated areas were regraded and filled with native fill materials.


Close_Desc:
Solids in the pond were allowed to dry.  The solids removed from Ponds D and G were placed over the pond.  When the onsite landfill is closed, this area will be covered with soil and graded along with the surrounding landfill area.


Close_Desc:
All material in this basin was removed and transfered to Basin 51 (SP-2), under the MCP. A RAM plan was utilized for the capping activites as the area was within RTN 4-13169.  The empty basin was filled with structrual fill material.      (document:RAM Plan 2009 cell 1A MCP area (d 4 22).pdf)


Close_Desc:
When the basin was removed from service all material within the basin was hauled off site to a lined landfill. Material was also removed to elevation 7'- 9' until all samples were below MCP Method 1 S-2 Standards. Attached Document: Basin 3 Closure report (D4 22).pdf


Close_Desc:
Basin was replaced with a concrete vertical wall basin in the same location (SPD-1). Solids were sent to Landfill - 1 or RET Landfill-1.  Water was sent to WWTS-1.


Close_Desc:
lagoon removal part of scrubber construction project and permitting


Close_Desc:
Encapsulated ash with 36 inches of FGD material.  Capped with 18 inches of topsoil.


Close_Desc:
Pond was drained and then removed to make room for the landfill expansion, Costs are not available for pond removal.


Long_Monitoring_Plan:
Groundwater samples are collected from 10 monitoring wells as part of the PTI for Landfill 11.  Three of the monitoring wells are located upgradient of Landfill 11 and seven are located downgradient of Landfill 11.


# Coal_Processing

mill_dispose_other_desc:
Sent off-site with mill balls for recycling every several years.


cpr_dest_treat_other_desc:
runoff is routed through a concrete baffle structure prior to discharge.


cpr_dest_recyc_other_desc:
Used for reactivation of coal pile dust suppressant


mill_dispose_other_desc:
Recycled. Pulverized and reprocessed through coal


cpr_dest_other_desc:
No coal pile runoff as facility does not have any coal pile


cpr_dest_other_desc:
discharged to perimeter ditch with no outfall


cpr_dest_other_desc:
Discharged to Groundwater via WPDES Outfall 008.

mill_dispose_other_desc:
Dump pyrites back into the raw coal bunkers.


cpr_dest_other_desc:
Percolation into surrounding ground area


mill_dispose_other_desc:
Mixed with bottom ash and beneficially used off site.


cpr_dest_other_desc:
Dicharge via stormwater permit: IA-351-240


mill_dispose_other_desc:
Rejects return to ball tube mill for further pulverization


cpr_dest_other_desc:
transferred to off site pond not under operational control of plant; pH adjustment occurs prior to discharge.


cpr_dest_other_desc:
Excess water is transferred to Evaporation Ponds


cpr_dest_other_desc:
remaines in the walled coal pile impoundment that does not discharge


cpr_dest_recyc_other_desc:
all runnoff is collected and sprayed back onto coal pile


cpr_dest_other_desc:
CPR discharged to adjoining power plants basins


mill_dispose_other_desc:
Placed back on coal pile and put back throught the system


cpr_dest_other_desc:
Coal pile runoff is contained by a berm that surrounds the coal piles


mill_dispose_other_desc:
Stored in a separate pile behind the coal pile


mill_dispose_other_desc:
COMBINED WITH BOTTOM ASH AND HAULED OFF SITE FOR DISPOSAL


mill_dispose_other_desc:
Combined with bottom ash in hydrobins and beneficially reused


cpr_dest_other_desc:
Coal pile berm is identified as SPD-1 in Table A-4.  Unless water accumulation overflow the berm structure, no further discharge flow is expected.


mill_dispose_other_desc:
The unit is a Circulating fluidized bed boiler.  The unit does not have mill rejects.


cpr_dest_recyc_other_desc:
Boiler seal-trough water, bottoms ash & economizer ash sluice water


cpr_dest_other_desc:
Discharged to internal outfall I-002 with final destination to D-001.


cpr_dest_other_desc:
Waste stabilization/coal yard runoff pond


cpr_dest_other_desc:
Coal Pile Collection System with no discharge


cpr_pond_seg_pondID:
SPD-1, SPD-2, SPD-3, SPD-4, SPD-6, SPD-7


cpr_dest_recyc_other_desc:
Transferred to SPD-1(process water ponds)


mill_dispose_other_desc:
Large non-coal hunks are disposed of.  Other rejects are returned to the coal pile as fuel stock.


cpr_dest_other_desc:
Coal yard runoff pond pumped to ash pond and discharged via outfall 001.


cpr_dest_other_desc:
Recycled back for ash sluicing and FGD water


cpr_pond_com_pondID:
Coal pile runnoff water is primarily used for ash conditioning, but can also be transferred to Outfall 201 to be treated and then discharged.

cpr_dest_other_desc:
The water collected in the coal pile runoff basin is primarily used for ash conditioning.  This water is pumped from the cprb to the ash silo where it is used in a pug mill to condition fly/bottom ash prior to transport.


cpr_dest_other_desc:
Discharged to groundwater via infiltration


cpr_dest_other_desc:
All storm water that comes into contact with the coal pile is managed in the immediate area.


cpr_dest_other_desc:
The plant stores coal in a silo constructed of cement.

mill_dispose_other_desc:
Material is initially placed in the PacifiCorp ash settling pond.  The ash settling pond is periodically cleaned and the removed material is disposed in the Black Hills Corporation mine reclamation area.


cpr_dest_other_desc:
Evaporation or stays within coal pile area


mill_dispose_other_desc:
Combined with bottom ash and hauled off site for beneficial use.


cpr_dest_other_desc:
Runoff contained in area around coal pile.


mill_dispose_other_desc:
Mixed with bottom ash and hauled offsite for reuse


mill_dispose_other_desc:
Staged on-site in bottom ash dewatering area


coal_wash_dest_recyc_other_desc:
Closed circuit coal wash system - no discharge


cpr_dest_recyc_other_desc:
partial makeup for the Dry FGD attemperator water.


cpr_dest_other_desc:
No discharge of coal pile runoff to waters of the state


mill_dispose_other_desc:
closed loop process - rejects re-crushed


cpr_dest_recyc_other_desc:
Transferred to SPD-2 for use in FGD system


cpr_dest_treat_other_desc:
onsite wastewater treatment system for cooling tower make-up


cpr_dest_recyc_other_desc:
Occasionally transferred from SPD-1 to FGD system for re-use as make-up water

cpr_dest_treat_other_desc:
Occasionally transferred from settling pond as stated in 13-4 and 13-5.


cpr_dest_recyc_other_desc:
Can be used for recirculating water makeup


mill_dispose_other_desc:
Segregated at coal pile and then hauled off site.


cpr_dest_other_desc:
Recycled from pond to FGD, other processes. See comments.


mill_dispose_other_desc:
Used by local road districts for winter traction


cpr_dest_treat_other_desc:
Recycled after treatment back to SPD-4, 5 and 6.


cpr_dest_other_desc:
on-site wastewater treatment plant (WWT-2)


cpr_dest_other_desc:
Directed to Pleasants Poower Station's Batch Wastewater Treatment System. (08281)


cpr_dest_other_desc:
Coal pile run-off (from SPD-9 ,SPD-10, SPD-11, and SPD-12) is directed to Bottom ash ponds (SPD-1 or SPD-2), which flows into the wastewater (SPD-3 or SPD-4), which flows into reclaim pond (SPD-5), then clearwater pond (SPD-6), then out Outlet 001

mill_dispose_other_desc:
Mill rejects are sluiced to the Bottom ash ponds (SPD-1 or SPD-2). Then as needed, SPD-1 and SPD-2 are dredged of solids, and the solids are hauled to the on-site landfill (LANDF-1).


cpr_dest_other_desc:
No Coal Piles; thus, No Coal Pile Runoff


mill_dispose_other_desc:
combined with fly ash and hauled off site


mill_dispose_other_desc:
Pulverizers do not have pyrite chutes/rejects


cpr_dest_other_desc:
recycled as lignite area wash down water, bottom ash make-up, operating pond make-up


cpr_dest_recyc_other_desc:
Waste water recovery system for reuse in most plant systems.


cpr_dest_other_desc:
The settling pond was dredged several times in 2009. Each time the sediment was put back onto the pile. We do not recycle the water.


cpr_dest_recyc_other_desc:
Coal pile runoff goes into SPD-19 and is intermittenly transferred to SPD-18 and recycled back through the plant for various uses

mill_dispose_other_desc:
combined with bottom ash and recycled as raod pavement


cpr_dest_other_desc:
Recycled to Plant Processes after treatment.


cpr_dest_other_desc:
Transferred to pond reported by plant 2740


cpr_dest_other_desc:
Water is contained to the area immediately surrounding the coal pile


cpr_dest_other_desc:
To evaporation ponds SPD-4, SPD-5, SPD-6


cpr_dest_other_desc:
Treatment system discharge is combined with cooling water prior to surface water discharge.


cpr_dest_recyc_other_desc:
Used as Cooling Tower makeup after chemical treatment. Permitted discharge B1A.


cpr_dest_recyc_other_desc:
Water from bottom ash pond (SPD-1) is used to sluice bottom ash, and some of the wastewater from SPD-1 can be recycled to the cooling towers in an emergency


cpr_dest_other_desc:
Transferred to the Kammer Plant SPD-2 and discharged via Kammer's Outlet 004


# Cooling_Systems

cs_chem2_name:
BCS Sodium Hypochlorite Solution (5-12.5%)

cs_chem4_ingred:
Water soluble ter-polymer of Acrylate/Acrylamide and Polyphosphonates/Toltriazol/and other proprietary components


cs_chem1_ingred:
Sodiium Hypochlorite, Sodium Hydroxide, Water


cs_chem1_ingred:
SODIUM METABORATE OCTAHYDRATE 5-10%wt
SODIUM MOLYBDATE 5-10%wt


cs_chem1_ingred:
Organic salt, fatty acid, monoethanolamine, ammonium benzoate, triazole derivative, alkanolamine


cs_chem2_ingred:
Maleic acid - 3% 1,2,4-butanetricarboxylic acid, 2-phosphono- 5to20% hydroxyphosphonoacetic acid - 5to20% 2-propenoic acid, ethyl ester, polymer with ethenyl acetate and 2,5-furandione, hydrolyzed 1to5% 1h-benzotriazole, 4(or5)-methyl-,sodium salt 1to5%


cs_chem3_ingred:
Phosphoric acid, 1-H-Benzotriazole, Potassium Hydroxide


cs_chem4_ingred:
Sodium Hypochlorite and Sodium Hydroxide


cs_chem5_ingred:
triazole derivative 1-5%  trade secret 1-5%


cs_chem1_ingred:
Potasium Phosphate, Potasium Hydroxide, 1-Hydroxyethylidene-1,1 disphoric acid, tetrapotasium salt

cs_chem2_ingred:
5-Chloro-2 methyl-4 Isothiazolin-3-one, 2-methyl-4 isothiazolin-3-one.


cs_chem1_ingred:
SODIUM CHLORIDE, SODIUM HYDROXIDE,SODIUM HYPOCHLORITE

cs_chem2_ingred:
ACRYLIC POLYMER, ORGANIC SALT, TRIPOTASSIUM PHOSPHATE, SCALE INHIBITOR, TRIAZOLE DESIVITE, INORGANIC SALT


cs_chem4_ingred:
Nonionic Alkyl Polyglycoside; Nonionic Surfactant


cs_chem2_ingred:
Sulfuric acid, inorganic salt, substituted aromatic amine


cs_chem1_ingred:
Tagged high stress polymer, Phosphinosuccinic Oligomer (PSO), Trasar Technology


cs_chem1_ingred:
Water-based corrosion inhibitor/deposit control agent CHLOROTOLYLTRIAZOLE SODIUM SALT, SODIUM HYDROXIDE (CAUSTIC SODA)

cs_chem3_ingred:
Biocide - 2-BROMO-2-NITROPROPANE-1,3-DIOL, MAGNESIUM NITRATE, 5-CHLORO-2-METHYL-4-ISOTHIAZOLIN-3-ONE, MAGNESIUM CHLORIDE


cs_chem4_ingred:
sodium hydroxide; tolyltriazole, sodium salt; 1-hydroxyethylidene-1, 1-diphosphonic acid, tetrasodium salt


cs_chem4_ingred:
Mineral oil, Polyglycol ester, Fatty acids

cs_chem5_ingred:
Tagged High Stress Polymer, Phosphinosuccinic Oligomer, Benzotrialzole, Tolyltriazole


cs_chem1_ingred:
Sodium Hypochlorite 10, Sodium Chloride 7-8, Sodium Hydroxide 0.5-2, Water Remainder


cs_chem2_ingred:
Phoshono, butanetricarboxylic acid, sodium salt, sodium hydroxide, tolyltriazole.

cs_chem3_ingred:
Sodium hydroxide, Sodium bromide, Sodium hypochlorite


cs_chem1_ingred:
Acrylic polymer, Individual residual monomers


cs_chem2_ingred:
Chlorotolyltriazole Sodium Salt, Dichlorotolyltriazole, Benzotriazole, Methyl, sodium salt, Sodium hydroxide


cs_chem1_ingred:
Ammonium Bisulfite, Ammonium Sulfite, Ammonium Sulfate


cs_chem2_ingred:
Potassium hydroxide, 1-hydroxyethylene-1, 1-bis(phosphonic acid), and acrylamido-methyl-propane-solfonate polymer


cs_chem3_ingred:
Phosphinosuccinic Oligomer, Phosphoric Acid, High Stress Polymer


cs_chem4_ingred:
Hydrodesulfurized Mineral Oil, Kerosene, Parrafin Wax, Ethoxylated Octyphenol, Exothylated tall Oil


cs_chem1_ingred:
Potassium Phospate (dibasic and monobasic), Tetrapotassium pyrophosphate, methylenephosphonic acid

cs_chem4_ingred:
Quadrasperse (proprietary copolymer), and 2-phosphono-1,2,4 butane tricarboxylic acid


cs_chem3_ingred:
Phosphoric Acid, Sodium Formaldehyde Bisulfite

cs_chem4_ingred:
5 Chloro 2 Methyl -4-Isothiazolin-3-one, 2 Methyl-4-Isothlazolin-3-one


cs_chem3_ingred:
Water, Acrylate, Polymer(s) Phosphate, Phosphonate


cs_chem3_ingred:
30-60% Hydroxyethylidene Diphosphonic Acid
1-5% Phosphonic Acid


cs_chem1_ingred:
Phosphonic Acid, (Hydroxyethylidene) Bistetresodium salt, Benzotraizole, Methyl, Sodium salt (Sodium Tolyltriazole), Sodium Hydroxide (Caustic Soda)

cs_chem2_ingred:
Alkyl Dimethyl Benzyl Ammonium Chloride;2-Bromo-2-Nitropropane-1,3-Diol;Ethyl Alcohol


cs_chem2_ingred:
Sodium Bisulfite, Sodium Hydrogen Sulfite

cs_chem3_ingred:
Potassium Hydroxide, Tetrapotassium Pyrophosphate, 1-Hydroxyethylidene-1, 1-diphosphonic acid, Phosphoric acid, Sodium Molybdate, polymer solid


cs_chem1_ingred:
Isoparaffinic petroleum distillate and Nonylphenoxypoly (ethyleneoxy) Ethanol


cs_chem1_ingred:
Potassium hydroxide, Tetrapotassium pyrophosphate, 1-Hydroxyethylidene-1, 1-diphosphonic acid, Tolyltriazole


cs_chem1_ingred:
4.2% HEDP phosphonate, 6.0% PBTC phosphonate, 1% BZT (yellow metal corrosion inhibitor), 7.8% high stress polymer


cs_chem2_ingred:
30-60% Hydroxyethylidene Diphosphonic Acid
1-5% Phosphonic Acid


cs_chem2_ingred:
Chlorotolytriazole sodium salt, Dichlorotolytriazole, Sodium tolytriazole, sodium hydroxide

cs_chem3_ingred:
bleach, hydrochloric acid, sodium chlorite


cs_chem2_ingred:
Phosphonic acid (Hydroxyethylidene), Benzotriazole Methyl Sodium Sal (Sodium Tolyltriazole), Sodium Hydroxide


cs_chem5_ingred:
Straight Run Middle Distillate, Ammonium Chloride


cs_chem1_ingred:
>1% Sodium Tolytriazole, phosphono butane, 1,2,4 Tricarboxylic Acid


cs_chem5_name:
Deposit/Corrision Inhibitor (Depositrol PY PY5204 and PY5204)


cs_chem2_ingred:
Acrylate Terpolymer (10-20%), Sodium Hydroxide (1-5%)


cs_chem1_ingred:
Sodium Hypochlorite, Sodium Hydroxide, Sodium Chloride, Sodium Carbonate


cs_chem2_ingred:
HEDP, Sulfonated Acrylic Acid-based Polymer


cs_chem1_ingred:
Quadrasperse Copolymer 7-13%, Potassium Hydroxide 5-10%, Potassium Phosphate, 5-10%, Tetrapotassium Pyrophosphate 1-5%, Tolyltriazole Sodium Salt 1-5%

cs_chem3_ingred:
Sodium Chlorosufamate 5-10%, Sodium Bromosulfamate 7-13%, Sodium Hydroxide 5-7%

cs_chem5_ingred:
N -Diocy-N, N Dimethylammonium Chloride, Ethanol


cs_chem3_ingred:
Phosphoric acid, sodium sulfate, sulfuric acid, hydrogen peroxide, ammonium sodium sulfate, benzotriazole


cs_chem2_ingred:
hydroxyethylidene-1, diphosphonic acid, dipotassium salt


cs_chem1_ingred:
neutralized polycarboxylic acid, polycarboxylate sodium salt, acrylic polymers


cs_chem1_ingred:
Sodium hydroxide (1-5%), Sodium Nitrite (10-30%0, Sodium Molybdate (1-5%)


cs_type_other:
once-thru in summer, recirc in winter due to snow melt system


cs_chem1_ingred:
Phosphoric & Sulfuric Acid, Substituted Aromatic Amine


cs_chem1_ingred:
Quadrasperse copolymer, potassium hydroxide, potassium phosphate, tribasic, tetrapotassium, pyrophosphate,tolytriazole


cs_chem2_ingred:
Polymaleic Acid, and 2-Phosphonobutane-1,2,4-Tricarboxylic Acid


cs_chem4_ingred:
50% Alkyl dimethyl benzyl ammonium chloride


cs_chem1_ingred:
2 - Propanol Acrylic Acid, 2 - Propenoic acid polymer with 2 - hydroxy - 3 -(2 propenyloxy) -1 Propane Sulfonic Acid, Sodium Salt, Sodium Sulfate

cs_chem3_ingred:
Alkyl Dimethyl Benzyl Ammonium Chloide and Ethyl Alcohol


cs_chem1_ingred:
acrylate terpolymer & disodium phosphate


cs_chem3_ingred:
aramatic amine, phosphoric acid, sulfuric acid


cs_chem3_ingred:
Sodium Bisulfate, Sodium Formaldehyde Bisulfite

cs_chem5_ingred:
Nonionic Surfactant, Nonionic Alkyl Polyglycoside


cs_chem3_ingred:
Sodium Bisulfate, Acrylic Polymer, Aliphatic Aldehyde


cs_chem1_ingred:
phosphonic acid, (1-hydroxyethylidine)bis-(HEDP); phosphorous acid (phosphonic acid)

cs_chem2_ingred:
chorotolyltriazole sodium salt; dichlorotolyltriazole; benzotriazole,methyl,sodium salt (sodium 1-5 tolyltriazole), (TTA); sodium hydroxide


cs_chem1_ingred:
phosphinosuccinic oligomer, phosphoric acid, and an organic high stress polymer


cs_chem1_ingred:
Phophoric Acid, Calcium Phosphae, HRA Azole


cs_chem1_ingred:
Oxirane / Methoxirane Polymer / Butyl ether

cs_chem2_ingred:
Sodium Hydroxide / Sodium hexametaphosphate


cs_chem1_ingred:
Alkyl Dimethyl Benzyl Ammonium Chloride, Ethyl Alcohol


cs_chem1_ingred:
Substituted Aromatic Amine, Phosphoric Acid, Sulfuric Acid


cs_chem3_ingred:
Alkyl dimethyl benzyl ammonium chloride, ethyl alcohol


cs_chem2_ingred:
ethyl alcohol, dodecyguandidne hydrochloride, isopropyl alcohol, alkyl dimethyl benzyl ammonium chloride, ethylene glycol


cs_chem1_ingred:
sodium hydroxide - Tolyltriazole, sodium salt


cs_chem2_ingred:
Phosphoric Acid (1-5%)    Substituted Aromatic Amine (1-5%)     Sulfuric Acid (1-5%)


cs_chem4_ingred:
Phosphonic acid, (1-hydroxyethylidine)bis-
(HEDP), phosphorous acid (phosphonic acid)

cs_chem5_ingred:
Sodium hydroxide, sodium tetraborate
pentahydrate, sodium molybdate


cs_chem2_ingred:
2-thiocyanomethylthio-benzothiazole,
methylene bis-thiocyanate, diethylene glycol
monomethyl ether, anionic surfactants,
methanol


cs_chem1_ingred:
5-chloro-2-methyl-4-isothiazolin-3-one, 2-
methyl-4-isothiazolin-3-one, magnesium
nitrate, magnesium chlroride


cs_chem4_ingred:
40-70% Alkyl (C12-C-16) Dimethylbenzylammonium Chloride
7-13% Ethanol


cs_chem3_ingred:
PBTC, PAA, Sulfonated Acrylic Acid-based Polymer


cs_chem1_ingred:
Chlorotolyltriazole Sodium S Alt, Sodium Molybdate


cs_chem2_ingred:
Sodium Chloride, Sodium Hydroxide, Sodium Hypochlorite


cs_chem2_ingred:
(proprietary) long chain alcohol, emulsifier (non-APE), thickener, and water


cs_chem1_ingred:
Tagged high stress polymer (THSP2); Phosphonate (HEDP); TRASAR


cs_chem1_ingred:
organic phosphate dispersan polymer blen


cs_chem3_ingred:
CHLOROTLYTRIAZOLE SODIUM SALT,DICHLORTOLYTRIAZOLE,SODIUM TOLYLTRIAZOLE,SODIUM HYDROXIDE


cs_chem2_ingred:
Tagged high stress polymer (THSP2); Phosphonate (HEDP); TRASAR


cs_chem2_ingred:
2-phosphonobutane-1, 2, 4-tricarboxylic acid, acrylate terpolymer, sodium hydroxide, sodium tolyltriazole


cs_chem4_ingred:
Tagged high stress polymer, phosphinosuccunuc oligomer, trasar technology


cs_chem2_ingred:
phosphonic acid, phosphonobutane tricarboxylic acid


cs_chem4_ingred:
40%-70% Phosphonic Acid  and 1%-5% Phosphorous acid


cs_chem1_name:
Performax 2021A, 66 degree Baume Sulfuric acid.


cs_chem1_ingred:
Sodium Hypochlorite, Sodium Hydroxide, Inert ingredients


cs_chem1_ingred:
Sodium Hypochlorite, Sodium Hydroxide, inert ingredients


cs_chem1_ingred:
Sodium Hypochlorite 10-15%, Sodium Hydroxide < 1%


cs_chem3_ingred:
Tolytriazole 50%, Sodium Hydroxide <0.5%


cs_chem1_ingred:
ALKYL DIMETHYL BENZYL AMMONIUM CHLORIDE, ETHYL ALCOHOL


cs_chem1_ingred:
Sodium Hydroxide, Substituted Aromatic Amine salt

cs_chem2_ingred:
Phosphoric Acid, Ammonium Sodium Sulphate


cs_chem5_ingred:
Ethylene Thiourea, Dithiocarbomate, Sodium dimethyldithiocarbonate


cs_chem2_ingred:
Benzotriazole methyl sodium salt, sodium hydroxide


cs_chem4_ingred:
Phosphoric Acid, Substituted Aliphatic Aldehyde, Anionic Co-Polymer, HEDP, PAA, Poly-Phosphate

cs_chem5_name:
See Comments Section for Additional Chemicals


cs_chem2_ingred:
Paraffin Wax, Hydrotreated Light Distillate, Straight Run Middle Distillate, Polyproplene Glycol, Aliphatic Alcohol).


cs_chem1_ingred:
Anhydride Homopoymer, Phosphonobutane, Tricarboxylic Acid, Polymer solids, Sodium Polyacrylate, Sodium Hydroxide


cs_chem2_ingred:
2-Phosphono-1,2,4-butanetricarboxylic acid, Polymer/copolymer blend (proprietary)


cs_chem3_ingred:
Potassium Hydoxide, Tolytriazole - Sodium Salt, 1-Hydroxyethylidene-1, 1-Diphosphonic Acid, Tetrapotassium Salt


cs_chem4_ingred:
phosphoric acid (20%)/phosphinosuccinic oligimer (20.5)


cs_chem5_ingred:
(Acrylate/Sulfonate copolymer), (Phosphoric Acid), (Sodium Bromide), (Dimethylamide), (Triazine)


cs_chem4_ingred:
Acrylic Polymer, Organic salt, Tripotassium Phosphate, Corrosion/Scale Inhibitor, Triazole Derivative, Inorganic Salt.


cs_chem2_ingred:
Ethanal & Alkyl Dimethyl Benzyl ammonium chloride


cs_chem2_ingred:
Chlorotolyltriazole sodium salt, Dichlorotolyltriazole, Benzotriazole,methyl,sodium salt(sodium tolyltriazole/TTA), and sodium hydroxide

cs_chem3_ingred:
2-Bromo-2-Nitropropane-1,3-diol, Magnesium nitrate, 5-Chloro-2-Methyl-4-Isothiazolin-3-one, and Magnesium chloride


cs_chem3_ingred:
2-Propenoic Acid Polymer with 2-Hydroxy-3-(2propenyloxy)-1-propane sulfonic acid


cs_chem3_name:
Holland Chemical Sodium Metabisulfate 30%


cs_chem2_ingred:
Disodium ethylenebis, Sodium dimethyldithiocarbamate, Ethylene Thiourea


cs_chem3_ingred:
inorganic and organic salts, corrosion/scale inhibitor, acrylic copolymer, phosphoric acid potassium salt


cs_chem1_ingred:
Phosphoric acid (tripotassium salt), acrylate terpolymer, chlorotolyltriazole sodium salt

cs_chem2_ingred:
chlorotyltriazole sodium salt; potassium hydroxide; d-glucose, decyl octyl ethers, oligomeric


cs_chem1_ingred:
Sodium trichloroisocyanurate, sodium bromide, available halogen

cs_chem3_ingred:
Phosphoric acid, Tagged high stress polymer, Phospinosuccinic Oligomer, TRASAR Technology


cs_chem1_ingred:
Chlorotolyltriazole Sodium Salt, Dichlorotolyltriazole, Benzotriazole Methyl Sodium Salt, Sodium Hydroxide


cs_chem5_name:
Spectrus CT-1300 or Chemtreat CL-2159
Spectrus CT1400 or 1401


cs_chem1_ingred:
Phosphonate (HEDP), Polyacrylate, High Stress Polymer [sulfomethylated polymer of acrylamide, sodium salt], TRASAR #2 [1,3,6,8-pyrenetetrasulfonic acid, sodium salt (PTSA)]


cs_chem5_ingred:
sulfuric acid 94% pure; sulfuric acid 78% (spent)


cs_chem2_ingred:
calcium hypochlorite, solidum chloride, calcium chlorate, calcium chloride, calcium hydroxide


cs_chem2_ingred:
Phosphinosuccinic Oligomer, high stress polymer


cs_chem2_ingred:
sodium hypochlorite, sodium chloride, sodium hydroxide

cs_chem3_ingred:
Petroleum Hydrocarbons, Fatty Acids, Non Ionic Surfactants


cs_chem2_ingred:
Sodium Metabisulfate and Sodium Bisulfite


cs_chem2_ingred:
Sodium Metabisulfite and Sodium Bisulfite


cs_chem2_ingred:
aramitc amine, phosporic acid, sulfuirc acid


cs_chem2_ingred:
2-PROPENOIC ACID POLYMER WITH 2-HYDROXY-3-(2-PROPENYLOXY)-1-PROPANE SULFONIC ACID, SODIUM SALT


cs_chem2_ingred:
Phosphoric Acid, Substituted aliphatic aldehyde, Phosphinosuccinic Oligomer (PSO)


cs_chem3_ingred:
Phosphonic Acid (1-Hydroxyrthylidine)Bis- (HEDP), Hydroxy propyl sulfonated ether (HPS-1)

cs_chem4_ingred:
Chlorotolytriazole sodium salt, Dichlorotolytriazole, Benzotriazole methyl sodium salt, Sodium hydroxide


cs_chem2_ingred:
Inorganic Salt, Organic Salt, Tripotassium Phosphate, Triazole Derivative

cs_chem5_ingred:
Organic Salt, Inorganic Salt, Scale Inhibitor


cs_chem3_ingred:
Ethylene glycol, Methanol, Phosphorous acid


cs_chem2_ingred:
Hydroxyethylidene diphosponic acid; Phosphonic acid

cs_chem3_ingred:
(C12-16) Alkyl Dimethyl Benzyl Ammonium Chloride (40-70%); Ethyl Alcohol (7-13%)


cs_chem1_ingred:
Phosphoric Acid, Benzotriazole, sulfuric acid


cs_chem1_ingred:
Acrylic Polymer..>=5-<10%,Organic Salt..>=1.5-<5%,Tripotassium Phosphate..>=1.5-<5%,Corrosion/Scale Inhibitor..>=1.5-<5%,Triazole derivative..>=1.5-<5%,Inorganic salt..>=1.5-<5%


cs_chem2_ingred:
Alcohol, hydrophobic silica, surfactant, organic salt, emulsifier


cs_chem2_ingred:
Sodium Hypochlorite, Sodium Hydroxide, Water, Sodium Chloride

cs_chem3_ingred:
Phosphori Acid, Substitued aromatic amine, Sulfuric Acid


cs_chem2_ingred:
substituted aromatic amine, phosphoric acid, sulfuric acid


cs_chem1_ingred:
Aromatic amine, phosphoric acid, sulfuric acid


cs_chem3_ingred:
aramatic aminie, phosphouric acid,sulfuric acid


cs_chem1_ingred:
1-Hydroxyethylidene-1,1-diphosphonic acid and phosphorus acid


cs_chem3_ingred:
Peracetic Acid (15-16%), Hydrogen Perioxide (22-23%), Acetic Acid(15-16%) and Water (balance)


cs_chem1_ingred:
Sodium Tolyltriazole (50%) and Sodium Hydroxide (<0.5%)


cs_chem1_ingred:
Alcohol, Hydrophobic Silica, surfactant, organic salt, emulsifier

cs_chem3_name:
BCS Sodium Hydpchlorite Solution (12.5%)


# CS_General

cs_comp_other_desc:
Plant does not discharge to a receiving waterway


cs_comp_other_desc:
Initial test with NPDES permit, new scan required for any change in chemicals


cs_comp_other_desc:
CT Blowdown is monitored for Free Available Chlorine, TSS, Total Chromium, and pH as requried by NPDES permit NE0113646


cs_comp_other_desc:
Cooling tower blowdown is monitored for free chlorine and pH.  Monitoring for priority pollutants is conducted with the NPDES permit application process.  Cooling tower chemicals are verified to not contain Cr or Zn.


cs_comp_other_desc:
No priority pollutants listed in MSDS constituents


cs_comp_other_desc:
Discharge of CS-A to begin July 2010 with monthly sampling


cs_comp_other_desc:
Plant samples for pH and free chlorine only


cs_comp_other_desc:
Comply with all terms of our NPDES permit


cs_comp_other_desc:
Evaluation of chemicals for maintenance of cooling tower by supplier indicates that no priority pollutants are present in these chemicals.


cs_comp_other_desc:
Effluent monitored in accordance with injection well permits.


cs_comp_other_desc:
Sample testing by Denton Utilities periodic


cs_comp_other_desc:
No priority pollutant chemicals added to cooling tower


cs_comp_other_desc:
Blowdown is discharged indirectly to POTW


cs_comp_other_desc:
There is no discharge from the evap ponds.


cs_comp_other_desc:
discharge to permited POTW wetlands offsite


cs_comp_other_desc:
Plant is a zero liquid discharge facility and does not discharge to an evaporative pond, therefore priority pollutants do not apply.


cs_comp_other_desc:
No priority pollutants added other than zinc, zinc is monitored at Outfall 001 per the NPDES permit.


cs_comp_other_desc:
Site does not add priority pollutants to system


cs_comp_other_desc:
Priority Pollutant scan required if treatment changes


cs_comp_other_desc:
PPS testing for NPDES repermitting conducted and results were non-detect.


cs_comp_other_desc:
Plant is zero liquid discharge, & does not have individual NPDES permit.


cs_comp_other_desc:
Plant monitors priority pollutants from cooling tower maintenance chemicals per NPDES permit


cs_comp_other_desc:
Plant does not have cooling tower "blowdown"


cs_comp_other_desc:
Monitoring of O/W Separator prior to injection to well


cs_comp_other_desc:
Plant only monitors for total residual chlorine.


cs_comp_other_desc:
Blowdown samples are taken daily when blowing down. In addition, outside certified contractor sample analysis is done along with the local city authority scheduled and  random analysis are performed as required by the permit.


cs_comp_other_desc:
No priority pollutants currently added to cooling towers


cs_comp_other_desc:
Annual sampling not required due to facility annual certification


cs_comp_other_desc:
discharge to Shelby Wastewater Treatment Plant (part of same municipality)


cs_comp_other_desc:
Priority Pollutant Scan (PPS) analyses completed during NPDES permit renewal


cs_comp_other_desc:
Plant does not add chemicals that contain any priority pollutants.


cs_comp_other_desc:
Sampling requirements are currently waived


cs_comp_other_desc:
Priority Pollutant Scan conducted during permit renewal application


cs_comp_other_desc:
Cooling Tower Blowdown is not discharged from plant


cs_comp_other_desc:
Non-discharge facility cooling water is evaporated in ponds


# Economizer_Ash

ea_cmbn_other_desc:
handled wet with either fly or bottom ash


ea_handle_segregated_desc:
Enters precipitator and colllected prior to air heater. Residual exits stack in air heater.


ea_cmbn_other_desc:
All ash is collected from the bottom of the boiler as bottom ash.


ea_handle_segregated_desc:
No dust collectors so no fly ash collected and bottom ash is removed by hand when unit on  maintenance outage.


ea_handle_segregated_desc:
Combined with pulverizer rejects sent to separate area of SPD-1


ea_handle_segregated_desc:
Combined with pulverizer rejects sent to Separate section of SPD-1


ea_cmbn_other_desc:
Not collected; travels with with all fly ash to be filtered by baghouse fabric filters and collected in baghouse hoppers.


ea_cmbn_other_desc:
Transported to wet bottom ash conveyor then dewatered with the bottom ash


ea_dest_other_desc:
hauled offsite for abandoned mine reclamation


ea_dest_other_desc:
all fry ash is beneficially used at mine site


ea_cmbn_other_desc:
Handled wet with fly ash and bottom ash.


ea_handle_segregated_desc:
Vacuumed out during scheduled shutdown maintenance activities. Not a continuous stream.


ea_cmbn_other_desc:
Slucied separately from slag, but collected in the same pond


ea_cmbn_other_desc:
handled wet with combined fly ash and bottom ash


ea_cmbn_other_desc:
Handled wet with combined fly ash and bottom ash


ea_cmbn_other_desc:
Handled wet with both  fly and bottom ash


ea_handle_segregated_desc:
Ash water pumps creates vacuum via the hydroveyor pulling the economizer into the storage bin.


ea_handle_segregated_desc:
The ash is transported to a non-marketable ash bin and then to a landfill.


ea_handle_segregated_desc:
caught in hopper transported to a silo by drag chain and trucked off site for sale


ea_handle_segregated_desc:
captured in hoppers drag chain removed to silo, removed for sale


ea_dest_other_desc:
Stored in/transferred to a pond/impoundment NOT reported in Table A-4: Sherco Ash Pond


ea_cmbn_other_desc:
can be pulled wet or dry depending on plant conditions


ea_handle_segregated_desc:
Economizer ash is collected in hoppers separate from flyash and is pulled from the hoppers directly into a dump truck and taken to the Landfill 1.


ea_dest_other_desc:
Beneficial use in abandoned mine lands reclemation.


ea_cmbn_other_desc:
Handled wet with bottom ash 1-1-09 to 2-21-09.  Then handled dry with dry fly ash.


ea_cmbn_other_desc:
Handled dry with fly ash and bottom ash - mixed in ash storage silo


ea_cmbn_other_desc:
Combined with fly ash, then handled wet or dry


ea_cmbn_other_desc:
Vacuumed by truck and dumped in ash decant pit with bottom ash in POND-1 System


ea_cmbn_other_desc:
collected with dry fly  ash system. Collected with wet fly ash system when dry system is unavailable.


ea_handle_segregated_desc:
Shares same transport line as the slag line, but economizer ash is diverted to another section of pond SPD-1.


ea_handle_segregated_desc:
Collected in screw conveyors and transferred to dry storage silos and trucked for disposal.


ea_cmbn_other_desc:
Handled wet with fly ash 1-1-09 to 2-21-09, then handled dry with fly ash.


ea_handle_segregated_desc:
collected with pyrites in the pyrite hopper


ea_cmbn_other_desc:
Combined with flyash, then handled wet or dry

ea_dest_other_desc:
Combined with fly ash (included in fly ash totals)


ea_dest_other_desc:
Handled with bottom ash (incl in totals)


ea_dest_other_desc:
Handled with bottom ash (incl. in bottom ash totals)


ea_dest_other_desc:
Handled with Bottom ash (incl. in bottom ash totals)


ea_handle_segregated_desc:
removed during boiler cleanings sluiced to SPD-1


ea_WW_dest:
On-site landfill (as reported in Table A-6)


ea_handle_segregated_desc:
Economizer ash is discharged with mill rejects.


ea_handle_segregated_desc:
Econ ash is collected and conveyed seperately


ea_handle_segregated_desc:
Wet conditioned and transported to offsite landfill.


ea_dest_other_desc:
Beneficial reuse as structural fill at clay mine.


ea_dest_other_desc:
Beneficial reuse as structural fill at clay mine


ea_cmbn_other_desc:
wet with bottom ash and dry with fly ash


ea_cmbn_other_desc:
can be handled dry with flyash or bottom ash


ea_cmbn_other_desc:
can be handled dry with fly ash or bottom ash


ea_handle_segregated_desc:
Economizer ash and bottom ash share the same transport line from the units to the lake, but the ash is sent through the lines at different times to different storage areas under normal conditions.


ea_dest_other_desc:
Economizer ash is included in the bottom ash section.


ea_cmbn_other_desc:
Handled dry and combined wet with bottom ash in SPD-3 or SPD-4


# FGD_Additives

purpose_other_desc:
pH restoration after reagent blinding by Aluminum Flouride


purpose_other_desc:
Increase thickener solids settling rate and keep solids flowable


additive:
GE Betz  Powerline 3627   Material 5009765

purpose_other_desc:
Biocide -- to kill sulfur reducing bacteria which produce H2S gas.


purpose_other_desc:
*Ran from 12/2008 - 7/2/2010, recently went back to using DBA.


purpose_other_desc:
FGD Service Water biocide for zebra muscles and Asiatic clams


purpose_other_desc:
corosion inhibitor added to the FGD service water


purpose_other_desc:
Inhibit oxidation of magnesium-enhanced lime chemistry.


purpose_other_desc:
Corrosion inhibitor added to the FGD Make-up water to protect piping


purpose_other_desc:
Biocide added to the FGD Make-up water to control biological growth


purpose_other_desc:
Cation & Anion Polymer Coagulants in Thickener.


additive:
GE Betz Spectrus CT1300 and Hypochlorite

purpose_other_desc:
Biocides added to the FGD Make-up water to control biological growth


purpose_other_desc:
Phosphate/ Polymer Blend corrosion and scale inhibitor


purpose_other_desc:
Manage Magnesium into solution and inhibiting oxidation potential


purpose_other_desc:
Antiscalant for water supplied to FGD vacuum pumps and oxidation air humidification.


purpose_other_desc:
Antifoaming agent added to the Reagent Feed Tanks


purpose_other_desc:
to maintain sulfur dioxide removal levels at 98% if a recycle pump is lost.


purpose_other_desc:
TMT 15® additive was field tested for mercury removal


purpose_other_desc:
Adsorption Plus(Hg) additive was field tested for mercury removal


purpose_other_desc:
Used if dibasic acid system is unavailable


# FGD_Dry_General

DFGD_source_rpw_params_other_desc:
Sulfates less than 500 ppm, Hardness less than 500 ppm, and total dissolved solids less than 1500 ppm


DFGD_source_rpw_params_other_desc:
House service water is used; no chemical requirements


DFGD_source_rpw_procWW_other:
FGD water is supplied from the Raw Water Pond (SPD-4) which contains river water and treated recycled process water and stormwater


DFGD_source_rpw_procWW_other:
SPD-9, Polishing Pond effluent containing various process waters from plant


DFGD_source_rpw_procWW_other:
Boiler drains, plant drains, and plant sump water.


DFGD_source_rpw_other_desc:
Primary source: river water; Secondary source: well water

DFGD_solids_mkt_other_desc:
Formation of hydrogen sulfide from calcium sulfate reacting with organic material has created landfill disposal issues. Also, the high calcium sulfite content inhibits the material from being used in structural concrete applications.


DFGD_source_rpw_procWW_other:
Reverse osmosis reject water also included


# FGD_Dry_Solids_Cost

DFGD_cost_other1_desc:
moving FGD solids from hopper to bottom ash pile


# FGD_Dry_Solids_Dest

DFGD_solids_dest_other1_desc:
Black Hills Corporation Mine Reclamation Area


# FGD_Dry_Solids_Mkt_Sold

DFGD_mkt_dest5_other_desc:
Airport runway extension (beneficial reuse)

DFGD_mkt_dest6_other_desc:
Landfill capping project (beneficial reuse)


# FGD_Gypsum_Related_Water

dest_gw_resuse_other_desc:
Gypsum related waters are transferred to POND-2 and pumped back to the plant to be reused for FGD reagent preparation, FGD make-up, flyash, bottom ash and pyrite sluice water.


dest_gw_resuse_other_desc:
Some gypsum dewatering process waters are recycled for partial absorber makeup flows


dest_gw_other_desc:
Combined with FGD wastes and discharge to IMP 001


dest_gw_resuse_other_desc:
Dust suppression, FPP3 boiler seal water system, Mist Eliminator washing, Flush water


dest_gw_resuse_other_desc:
FGD related water is sent to the Return Water Tank and then back to absorber via pump


dest_gw_resuse_other_desc:
Gypsum pile runoff is comingled with the Plant recycle water system (POND-12).


dest_gw_other_desc:
Percolation pond discharge to groundwater per IWW permit FLA0166960


dest_gw_other_desc:
Transferred to an onsite treatment system owned and operated by separate commercial entity


dest_gw_treat_other_desc:
Gypsum wash down water is pumped to Coal Pile Run-off Pond "A"


# FGD_Monitoring_Data_Results

FGD_data_loc:
Supernate return line both units combined


FGD_data_qualifier:
(ESC) - Additional method/sample information:  The laboratory analysis was from an unpreserved or improperly preserved sample.


# FGD_Systems

FGD_type_other:
Advatech Double contact flow scrubber (DCFS)


FGD_type_other:
Dry Injection into Combustor (CFB Technology)


# FGD_Wastewater_Treatment

dest_treat_purge_recyc_desc:
Recycled back to scrubbers as make up water.


FGD_wwts_tech_other_desc:
Physical/Chemical Treatment - Infilco Degremont, Inc Densadeg Technology

dest_treat_purge_other_desc:
Pond A and Pond B (SPD-1 & SPD-2) are intermediate destinations with the NPDES Outfall 002 (discharge to the river) as the final destination.


dest_treat_purge_other_desc:
FGD slurry discharge is not treated. Transferred to evaporation ponds SPD-6 and SPD-7


dest_treat_purge_recyc_desc:
recycled the thickener supernate back to FGD system as either limestone preparation and/or absorber make-up


dest_treat_purge_other_desc:
Some purge water is recycled back to absorber vessels by way of secondary hydroclones


FGD_purge_cmngl_pond_other_desc:
Purge water commingles w/ bottom ash only when holding pond water is transferred to ash pond or vice versa

dest_treat_purge_recyc_desc:
Slurry discharge is dewatered, sludge removed to landfill. Water is recycled back to scrubber or sent to pond.


dest_treat_purge_recyc_desc:
Water is clarified and used in mist eliminators and lime slurry grinding.


dest_treat_purge_recyc_desc:
Settling pond discharge flows into station cooling pond, and is reused as plant cooling water.


FGD_purge_cmngl_pond_other_desc:
FGD scrubber purge (or slurry discharge) is sent to an FGD settling pond and is subsequently commingled with ash water in larger settling pond

dest_treat_purge_other_desc:
See section B7-4 above; the final process water goes to both Outfall ID#OIB00049012 and back to the FGD makeup water system.


dest_treat_purge_recyc_desc:
Demineralizer make- up, cooling tower make up, scubber make up


FGD_purge_cmngl_pond_other_desc:
Ash pond discharges into FGD settling ponds

dest_treat_purge_other_desc:
Clear pond water is recycled for bottom ash sluice, fly ash sluice, and FGD makeup, with an overflow to the river


dest_treat_purge_other_desc:
Percolation pond discharge to groundwater per IWW Permit FLA016690


dest_treat_purge_other_desc:
sludge is thickened and pumped to evaporation pond SPD-1


FGD_wwts_tech_other_desc:
Transferred to an onsite treatment system owned and operated by separate commercial entity


FGD_purge_cmngl_other1_desc:
cooling tower blowdown, coal pile runoff

dest_treat_purge_recyc_desc:
Purge is dewatered then can be used in mist eliminator make up, ball mill make up, and process make up water.


FGD_wwts_tech_other_desc:
clarification ("DensaDeg"), pH adjustment, filtration


dest_treat_purge_other_desc:
Decanted liquid from the settling pond, (SPD-6) is comingled with other process wastewater in SPD-1 before recycled back to plant process


dest_treat_purge_recyc_desc:
FGD scrubber purge is transferred to SPD-2 and pumped back to the plant to be reused for FGD reagent preparation, FGD make-up, flyash, bottom ash and pyrite sluice water.


dest_treat_purge_recyc_desc:
Water reclaimed from FGD purge is directed back to the FGD system.


dest_treat_purge_recyc_desc:
Scrubber purge goes to the reclaim pond and is then recycled back to the absorber towers for make-up water.


FGD_wwts_tech_other_desc:
Solids separation; Purge is recycled back into the FGD process

dest_treat_purge_recyc_desc:
After solids separation with filter drums, the FGD purge is sent to holding pond and then recycled back into the FGD process


FGD_purge_cmngl_pond_other_desc:
FGD scrubber purge and BAS are treated in a WWTS prior to entering the pond

dest_treat_purge_recyc_desc:
Absorber make up and Mist eliminator sprays


FGD_purge_cmngl_pond_other_desc:
Fly ash is removed by SO2 wet scrubber and transported with slurry. Not added separately to the pond


dest_treat_purge_recyc_desc:
On a weekly basis, about 25% of the treated FGD scrubber purge is recycled back to the FGD absorbers.


dest_treat_purge_other_desc:
Treated in pond then discharged via IMP 001.


FGD_purge_cmngl_pond_other_desc:
FGD scrubber purge sent to surge pond (SPD-5 and SPD-6) and is not commingled with bottom ash or fly ash.

dest_treat_purge_recyc_desc:
Water is pumped to reclaim pit and redistributed back into the process


FGD_purge_cmngl_other1_desc:
Air Heater Wash Water (AHCW), Plant Washdown

FGD_purge_cmngl_other2_desc:
Ion Exchange Wastewater (IXW), Domestic Wastewater

dest_treat_purge_recyc_desc:
Recycled to limestone preparation process (RECYC-FGDP) and FGD make-up water (RECYC-FGDAB)


FGD_wwts_tech_other_desc:
System does not generate scrubber purge or slurry discharge as defined in this questionnaire

dest_treat_purge_other_desc:
No scrubber purge or slurry discharge generated.  All water from solids separation recycled back into FGD absorber system.


dest_treat_purge_recyc_desc:
Scrubber purge is sent to SPD-2 and then recyled back to FGD reagent prep and/or absorber make-up.


FGD_purge_cmngl_pond_other_desc:
The FGD scrubber purge also commingles with Unit #2 cooling tower blowdown in the settling pond.

FGD_wwts_tech_other_desc:
The treated scrubber purge goes to settling pond where solids are scooped out and dewatered.  It is then landfilled.  The liquid equalizes with other discharge streams and is discharged to 001.


dest_treat_purge_recyc_desc:
Used for absorber makeup water; pipe flushing water.


dest_treat_purge_recyc_desc:
Water is sent to the process water ponds for reuse mill sluice, scrubber make-up and other in the plant.


FGD_wwts_tech_other_desc:
Blend with dry fly ash, use pozzolonic properties of fly ash.


FGD_wwts_tech_other_desc:
Slurry blow down is oxidized with air in a tank separate from the absorber module.  After oxidation, slurry is transferred to a thickener, where chlorinated sanitary waste water is also comingled.  Over flow from thickener results in Clarified Recycled water, which is in the cut-off sprays of the lime slaker.  Raw intake water is used to slake lime.  Thickened oxidized slurry is remved from the bottom of the thickener, dewatered, resulting Gypsum.  Water from vacuum filter is returned to the thickener.

dest_treat_purge_recyc_desc:
Clarified recycled water (CRW) from the thickener is recycled back to the cut off sprays in the lime slurry slakers.  CRW blowdown is sent to Outfall 005A without further treatment.


FGD_purge_cmngl_other1_desc:
Yard drain wastewaters, landfill and ash pile runoff, cooling tower blowdown


dest_treat_purge_recyc_desc:
Reused in the scrubbers as process liquor makeup


FGD_purge_cmngl_other1_desc:
stormwater runoff from dry fly ash disposal


dest_treat_purge_recyc_desc:
Some is recycled for reagent prep, and absorber makeup


FGD_purge_cmngl_pond_other_desc:
FGD scrubber purge (or slurry discharge) is sent to an FGD solids retention pond and is subsequently commingled with bottom ash water then flows to a fly ash pond


dest_treat_purge_other_desc:
Discharged to SPD-1, Ash Pond, which discharges with other waste streams through outfall 01 to surface water.


FGD_purge_cmngl_other2_desc:
Acid unloading station drains and condensate polisher waste.

dest_treat_purge_other_desc:
Reused as make-up to Ash water transport ash system is an intermittant basis


FGD_wwts_tech_other_desc:
Fly ash is mixed with process water for stabilization for disposal.

dest_treat_purge_other_desc:
Fly ash is mixed with process water for stabilization for disposal.


FGD_wwts_tech_other_desc:
Dewatered from solid scrubber waste using filter drum

dest_treat_purge_recyc_desc:
FGD scrubber purge is sent to the solids handling building were solids are separated and wastewater return to FGD


dest_treat_purge_recyc_desc:
Used for limestone slurry/reagent preparation


dest_treat_purge_recyc_desc:
Recycled back to process water and a portion of the scrubber purge is reused for absober make-up, mist eliminator wash, and centrifuge cake wash


dest_treat_purge_recyc_desc:
reused as makeup water to the ABS towers


FGD_purge_cmngl_pond_other_desc:
Clarifier underflow, wastewater from CSF building drains


FGD_purge_cmngl_other1_desc:
Water treating plant sludge dumps,fliter and softener backwash and rinse, boiler blowdown


dest_treat_purge_recyc_desc:
Slurry discharge is collected in thickener tanks and the decant water is reused within the FGD system.

dest_treat_purge_other_desc:
During system upsets, decant of the discharges that go to settling pond is recycled back to the FGD system.


FGD_purge_cmngl_pond_other_desc:
Commingled with Landfill Runoff Leachate

dest_treat_purge_recyc_desc:
Recycled Clarified Scrubber Blowdown used as absorber make up.


FGD_wwts_tech_other_desc:
dual alkali scrubber does not have a slurry discharge

dest_treat_purge_other_desc:
dual alkali scrubber does not have a slurry discharge


FGD_wwts_tech_other_desc:
natural cold weather precipitation of sodium sulfate

dest_treat_purge_recyc_desc:
FGD absorber tower make up, fly ash slurry water, FDG misc system flush water, FGD absorber blowdown pit make up, mist eliminator wash water


FGD_purge_cmngl_other1_desc:
Coal Pile runoff. See Diagram D-2 and Part A.3-3

dest_treat_purge_other_desc:
Scrubber purge is discharged to Ash Pond #2 and subsequently to Ash Pond #1.  Some Ash Pond water is recycled for ash sluice, Some commingles with cooling water and discharged through Outfall 01.  See Diagrams D-1 and D-2.


dest_treat_purge_other_desc:
From internal outfall I-006, the wastewater is commingled with other wastewater and becomes I-002 and this water is commingled with cooling tower blowdown and domestic wastewater to become D-001.


FGD_purge_cmngl_other2_desc:
No other process wastewaters are commingled with the slurry discharge in the settling ponds.  See diagram D-2.  Overflow pumps are tested one hour per month to assure operational readiness.

FGD_purge_cmngl_pond_other_desc:
No other process wastewaters are commingled with the slurry discharge in the settling ponds.  See diagram D-2.  Overflow pumps are tested one hour per month to assure operational readiness.

FGD_wwts_tech_other_desc:
See previous answers for handling of scrubber slurry.  While not considered "purge", the flow from one-hour-per-month operation of emergency overflow pumps is discharged to Ash Pond #2.  See Diagram D-q1 and A.3-3.


dest_treat_purge_other_desc:
Solids at 40% moisture sent to combustion waste landfill, remaining water to farm


dest_treat_purge_recyc_desc:
Limestone preparation, make up water for the modules, cleaning and flushing pumps and piping.


dest_treat_purge_recyc_desc:
ME wash water, reagent prep water, absorber make-up.


dest_treat_purge_recyc_desc:
Make-up to absorber, used in FGD slurry preparation, mist eliminators.


dest_treat_purge_other_desc:
Internal discharge to SPD-6, which flows to SPD-7, which flows to SPD-8, which flows to SPD-1, which flows to SPD-3, then discharged out internal Outfall 002, and finally discharged out Outfall 001.


dest_treat_purge_other_desc:
Some of the mixture of the ash pond water goes back to the wet ash system. The ash pond water would include some of the treated FGD scrubber purge water


dest_treat_purge_other_desc:
FGD systems do not have a liquid scrubber purge stream.


FGD_wwts_tech_other_desc:
No treatment. 100% filtrate recycle with zero discharge

dest_treat_purge_recyc_desc:
Filtrate is collected and pumped to the reagent preparation plant to produce limestone slurry


dest_treat_purge_recyc_desc:
Vacuum pump filtrate and thickener overflow liquids are used to makeup for module evaporative loss and for limestone slurry production.


dest_treat_purge_other_desc:
Treated effluent from chemical precipitation is transfered to plant bottom ash pond. The outfall from bottom ash pond discharges into the clearwater pond prior to discharge.


dest_treat_purge_other_desc:
Water from the E-pond (SPD-4) flows to the Ash Pond (SPD-2)


# FGD_Wet_General

WFGD_bd_other_desc:
blowdown determined by excess water and water needs

WFGD_source_mist_procWW_other:
After processed through thickener to remove solids

WFGD_source_abs_mkup_procWW_other:
After processed through thickener to remove solids


WFGD_source_rpw_procWW_other:
Reclaim water (makeup plus hydroclone overflow)

WFGD_source_abs_mkup_procWW_other:
Reclaim water (makeup plus hydroclone water)

WFGD_solids_mkt_other_desc:
Water Soluble Salts(excluding calcium sulfate)


WFGD_source_rpw_procWW_other:
Reclaim water (makeup water plus hydroclone overflow)

WFGD_source_abs_mkup_procWW_other:
Reclaim water (makeup water plus hydroclone overflow)

WFGD_solids_mkt_other_desc:
Water Soluble salts (excluding Calcium sulfate)


WFGD_source_mist_other_desc:
Thickener Overflow from FGD solids separation

WFGD_source_abs_mkup_other_desc:
Thickener Overflow from FGD solids separtation


WFGD_source_mist_procWW_other:
recycle basin water (stormwater runoff, coal pile runoff, floor drain wastewater, cooling tower blowdown, ion exchange wastewater)

WFGD_source_rpw_procWW_other:
recycle basin water (stormwater runoff, coal pile runoff, floor drain wastewater, cooling tower blowdown, ion exchange wastewater)

WFGD_source_abs_mkup_procWW_other:
recycle basin water (stormwater runoff, coal pile runoff, floor drain wastewater, cooling tower blowdown, ion exchange wastewater)


WFGD_source_rpw_procWW_other:
Combination of scrubber blowdown with solids removed, gypsum washwater, landfill runoff water, condesate regen wastewater, filter backwash water, service water.

WFGD_source_abs_mkup_procWW_other:
Combination of scrubber blowdown with solids removed, gypsum washwater, landfill runoff water, condesate regen wastewater, filter backwash water, service water.


WFGD_equip2_mat_other:
25% chrome, 6% molybdenum stainless steel

WFGD_bd_other_desc:
specific gravity, maintained between 1.13 sgu and 1.18 sgu

WFGD_source_mist_procWW_other:
other process wastewaters commingled in SPD-2

WFGD_source_rpw_other_desc:
supernate from slurry blowdown at thickeners

WFGD_source_abs_mkup_procWW_other:
bottom ash sluice and other wastewaters transferred to SPD-2

WFGD_source_abs_mkup_other_desc:
supernate from slurry blowdown at thickeners


WFGD_source_abs_mkup_procWW_other:
Solids seperation recycle and reclaim water


WFGD_source_abs_mkup_procWW_other:
Solids separation recycle and reclaim water


WFGD_equip1_mat_other:
Vinyl Ester Resin Coating (fiberglass) on Carbon Steel Recycle Tank

WFGD_source_H2O_other_desc:
Not Determined because our makeup water sources do not present a risk at this time.

WFGD_source_rpw_other_desc:
Treated Landfill Leachate and/or SPD-1 water

WFGD_source_abs_mkup_other_desc:
Treated Landfill Leachate and/or SPD-1 water


WFGD_source_rpw_procWW_desc:
FGD scrubber purge (or slurry discharge)


WFGD_equip1:
Plumb bob section, absorber & venturi walls


WFGD_source_rpw_procWW_other:
FGD Reclaim Water as shown on Figure B-1


WFGD_source_H2O_other_desc:
SPD-1 effluent is used for soda ash; well water used for lime slaking.

WFGD_source_abs_mkup_other_desc:
no absorber make up, make up is added to the thickner tank


WFGD_solids_other1_desc:
inert alumina silicates, unreacted calcium carbonate, etc.


WFGD_source_rpw_other_desc:
No water used for FGD reagent preparation


WFGD_source_rpw_procWW_other:
Combination of scrubber blowdown with solids removed, gypsum washwater, landfill runoff water, condesate regen wastewater, service water, filter backwash,

WFGD_source_abs_mkup_procWW_other:
Combination of scrubber blowdown with solids removed, gypsum washwater, landfill runoff water, condesate regen wastewater, service water, filter backwash,


WFGD_source_H2O_other_desc:
Cooling Tower Blow down, chlorides and solids percentage not specified


WFGD_source_mist_procWW_other:
Recycle Water from Wastewater Pond System

WFGD_source_rpw_procWW_other:
Recycle Water from Wastewater Pond System

WFGD_source_abs_mkup_procWW_other:
Recycle Water from Wastewater Pond System

WFGD_solids_other1_desc:
Sodium Sulfate (50%) Sodium Sulfite (25%)


WFGD_source_abs_mkup_procWW_other:
water blended to maitain chloride levels


WFGD_solids_mkt_other_desc:
Purity > 92%, Calcium Sulfite < 1%, Na < 120 ppm, Cl < 120 ppm, Mg < 120 ppm, K < 75 ppm, V < 50 ppm, TDS < 500 ppm, Moisture < 15%, pH <8 and >6, Avg Particle Size < 60 microns and >20 microns, Flyash < 1%, TOC 1250 ppm.


WFGD_source_rpw_procWW_other:
circulation water blowdown, thickener overflow


WFGD_bd_other_desc:
solids controlled to a setpoint of 20% by wt.


WFGD_source_mist_procWW_other:
industrial waste water treatment effluent

WFGD_source_rpw_procWW_other:
industrial waste water treatment effluent

WFGD_source_abs_mkup_procWW_desc:
FGD scrubber purge (or slurry discharge)

WFGD_source_abs_mkup_other_desc:
treated STP effluent; industrial waste water treatment effluent


WFGD_source_mist_procWW_desc:
FGD scrubber purge (or slurry discharge)


WFGD_source_H2O_other_desc:
We do not sample water sources for absorber make-up or FGD reagent prep water


WFGD_bd_other_desc:
We utilize a continuous blowdown system.


WFGD_source_abs_mkup_procWW_other:
recycle basin water (stormwater runoff, coal pile runoff


WFGD_sep_other_desc:
fly ash is blended with thickener underflow that is not converted to wallboard quality gypsum, total slurry pumped to landfill


WFGD_source_rpw_other_desc:
thickner overflow tank - water seperated

WFGD_source_abs_mkup_other_desc:
thickner overflow tank - water seperated


WFGD_source_rpw_procWW_other:
yard drain waste water, boiler blowdown, combined ash sluice

WFGD_source_abs_mkup_procWW_other:
yard drain waste water, boiler blowdown, combined ash sluice


WFGD_source_rpw_procWW_other:
Reclaim water (makeup plus hydrocyclone overflow)

WFGD_source_abs_mkup_procWW_other:
Reclaim water (makeup plus hydrocyclone overflow)


WFGD_source_mist_other_desc:
alt source is raw water to ash sluice sys

WFGD_source_rpw_other_desc:
alt source is raw water to ash sluice sys

WFGD_source_abs_mkup_other_desc:
alt source is raw water to ash sluice sys


WFGD_bd_other_desc:
pH maintained between 5.4 & 5.8, tank level maintained between 32.5 &35


WFGD_sep_other_desc:
None, direct to dewatering vacuum drum filter

WFGD_solids_dwr_other_desc:
None, direct to dewatering vacuum drum filter


WFGD_source_abs_mkup_procWW_other:
Reclaim water (makeup plus hydroclone overflow)

WFGD_solids_mkt_other_desc:
Water Soluble Salts (excluding calcium sulfate)


WFGD_source_mist_other_desc:
Limestone pile runoff, once-through cooling water

WFGD_source_rpw_other_desc:
Limestone pile runoff, once-through cooling water

WFGD_source_abs_mkup_other_desc:
Limestone pile runoff, once-through cooling water


WFGD_source_H2O_other_desc:
no limit use grey water  (POTW effluent)

WFGD_source_mist_other_desc:
Grey water from a local wastewater treatment facility

WFGD_source_rpw_other_desc:
Grey water from a local wastewater treatment facility

WFGD_source_abs_mkup_other_desc:
Grey water from a local wastewater treatment facility


WFGD_source_mist_procWW_other:
200 gpm clarified recycle & 200 gpm cooling tower blowdown

WFGD_source_abs_mkup_procWW_other:
Can either be ash water,  cooling tower or raw water


WFGD_source_rpw_procWW_other:
clarified recycled water (CRW) which overflows from the lime slurry thickener. Only used in cut-off sprays of lime slaker.


WFGD_source_abs_mkup_procWW_other:
Reclaim Water (consists of gypsum stack decant and runoff, gypsum wash water, and hydroclone overflow)


WFGD_source_mist_procWW_other:
Plant Process Water, Treated CPR/MCW, Treated FGD Scrubber Blowdown, Bottom Ash Sluice Water

WFGD_source_abs_mkup_procWW_other:
Plant Process Water, Treated CPR/MCW, Treated FGD Scrubber Blowdown, Bottom Ash Sluice Water


WFGD_source_rpw_procWW_other:
Water derived from the dewatering process

WFGD_source_abs_mkup_procWW_other:
Cooling Tower blowdown water used as makeup supply for ash sluice alternate backup


WFGD_sep_other_desc:
Blowdown sent directly to gypsum wallboard marketer


WFGD_sep_other_desc:
Blowdown sent directly to gypsum marketer


WFGD_equip1:
Agitator shaft & blades, tower lining, mist eliminators, reheat tube bundles


WFGD_source_mist_other_desc:
cooling tower make-up pulled out of hot ditch


WFGD_source_mist_other_desc:
bottom ash transport water after solids removal

WFGD_source_rpw_other_desc:
bottom ash transport water after solids removal

WFGD_source_abs_mkup_other_desc:
supernate from FGD slurry blowdown after solids separation and bottom ash water after solids removal


WFGD_solids_mkt_other_desc:
Specification included with the comments


WFGD_equip1_mat_other:
SS cladding material on CS absorber tower

WFGD_bd_other_desc:
No valves to operate blowdown, only overflow piping


WFGD_source_mist_procWW_other:
Cooling tower blowdown, floor drain, boiler blowdown, soot blowing washwater, air heater cleaning water, coal pile runoff, FGD scrubber purge

WFGD_source_rpw_procWW_other:
Cooling tower blowdown, floor drain, boiler blowdown, soot blowing washwater, air heater cleaning water, coal pile runoff, FGD scrubber purge

WFGD_source_abs_mkup_procWW_other:
Cooling tower blowdown, floor drain, boiler blowdown, soot blowing washwater, air heater cleaning water, coal pile runoff, FGD scrubber purge


WFGD_source_rpw_procWW_other:
reclaim water ( decanted water  from the primary dewatering system)

WFGD_source_abs_mkup_procWW_other:
reclaim water ( decanted water  from the primary dewatering system)


WFGD_source_mist_procWW_other:
air heater cleaning water, ion exchange waste water, coal pile runoff, limestone pile runoff, floor drains, boiler blowdown

WFGD_source_rpw_procWW_other:
air heater cleaning water, ion exchange waste water, coal pile runoff, limestone pile runoff, floor drains, boiler blowdown

WFGD_source_abs_mkup_procWW_other:
air heater cleaning water, ion exchange waste water, coal pile runoff, limestone pile runoff, floor drains, boiler blowdown


WFGD_source_H2O_other_desc:
solids removal efficiency of primary & secondary


WFGD_source_rpw_procWW_other:
GYPSUM DEWATERING OVERFLOW TO SPD-3 POND

WFGD_sep_other_desc:
BLOW DOWN TO SPD-3 POND IS SHUT DOWN DURING GYPSUM DEWATERING


WFGD_source_abs_mkup_procWW_other:
General Water: bottom ash pond return, cooling tower blowdown, Cholla Reservoir blowdown, RO rejects, sedimentation pond return


WFGD_sep_other_desc:
Blowdown to SPD-3 pond when gypsum dewatering is offline


WFGD_source_rpw_procWW_other:
FGD Reclaim Water (solids separation recycle)

WFGD_source_abs_mkup_procWW_other:
FGD Reclaim Water (solids separation recycle)


WFGD_source_H2O_other_desc:
All reagent preparation water is river (fresh) water.  River water is strained for solids and chlorides are not a concern.

WFGD_source_mist_procWW_other:
Either a blend of recycled process water (thickener overflow water) and recycled pond water or 100% recycled process water.

WFGD_source_abs_mkup_other_desc:
Recycled process water (thickener overflow) and/or recycled pond water.


WFGD_source_H2O_other_desc:
All reagent preparation water is river water.  River water is strained to remove larger solids and chlorides are not an issue.


WFGD_bd_other_desc:
JBR Submergence level kept below 21 feet


# FGD_Wet_Solids_Cost

WFGD_cost_other1_desc:
Total Cost of Providing For Mine Reclamation


WFGD_cost_other3_desc:
Maintenance, Materials & All Other Costs.


WFGD_cost_other1_desc:
Hauling FGD solids and Cost of on site disposal


# FGD_Wet_Solids_Dest

WFGD_solids_dest_other1_desc:
Beneficial use for abandoned mine lands reclamation.


WFGD_solids_dest_other1_desc:
We paid to have material trucked off-site.  Trucking company markets and sells the gypsum.


WFGD_solids_dest_other1_desc:
Beneficial reuse at clay mine for structural fill


WFGD_solids_dest_other2_desc:
Sent to Conesville Coal Prep Plant -- refuse cover


# FGD_Wet_Sources_Flow

WFGD_water_source2:
FGD scrubber purge (or slurry discharge)


WFGD_water_source_other_desc:
Ash sluice/cooling tower blowdown/purge stream(SPD-2)


WFGD_water_source1:
FGD scrubber purge (or slurry discharge)


WFGD_water_source_other_desc:
Plant 2740 green ash pond recycle and thickener return


WFGD_water_source_other_desc:
Ash sluice/cooling tower blowdown/purge stream


WFGD_water_source3:
FGD scrubber purge (or slurry discharge)


WFGD_water_source_other_desc:
Service water, landfill leachate, landfill runoff uncapped, condensate polisher regeneration wastewater


WFGD_water_source_other_desc:
Service water, leachate, landfill landfill runoff uncapped, condensate polisher regeneration wastewater


WFGD_water_source_other_desc:
Grey water from local wastewater treatment facility


WFGD_water_source_other_desc:
low volume waste, coal pile runoff, ground water,


# Fly_Ash_Dry_Installation

fly_install_personnel_desc:
Train operations and maintenance on new fabric filters, air compressors and dense phase ash conveying system.


fly_dry_cost_est_instl_explain:
The proposed Dry fly Ash conversion for three units is estimated to cost $80M (order of magnitutde estimate).  Comparison estimate of  the KIF Dry fly Ash Conversion.  No official proposal available.

fly_install_personnel_desc:
New handling system will require personnel training on new equipment for both maintenance and operations


fly_dry_cost_est_not_instl_explain:
The question, as posed, seeks information regarding bids and cost estimates from facilities that are not in the process of installing or planning to install a dry fly ash handling system.  The Karn facility installed a dry fly ash handling system that became commerically operational on February 2009.  If EPA seeks actual cost information on this installation, please contact the facility and the information will be provided as CBI.


fly_dry_cost_est_not_instl_explain:
A cost estimate of $83 million for the Kyger Creek Station was based on previously completed dry conversion projects.  No actual study and cost estimate was performed for this plant.


fly_install_phys_other_desc:
Vac Pumps to replace Hydroveyors, redundant silo


fly_install_personnel_desc:
Employees trained to operate new equipment


fly_dry_cost_est_not_instl_explain:
Note that the attached document is for the equipment and does not include installation costs.


fly_dry_cost_est_instl_explain:
only internal cost estimates have been developed (see comments)


fly_dry_cost_est_not_instl_explain:
An outside vendor approximated the conversion cost and provided an estimate, without documentation.  We have not received any actual proposals or reports.


fly_dry_cost_est_instl_explain:
INTERNAL COST ESTIMATES - see Comment Section.

fly_install_phys_other_desc:
DESIGN HAS NOT BEEN DEVELOPED, UNABLE TO DEFINE WHAT CHANGES ARE REQUIRED.

fly_dry_cost_est_not_instl_explain:
see Question C2-19 for plans to install dry fly ash handling system.


fly_install_phys_other_desc:
Install vacuum pumps to replace water-powered ejector.

fly_install_personnel_desc:
Provide training on operations and maintenance of revised conveying system.


fly_dry_cost_est_not_instl_explain:
The question, as posed, seeks information regarding bids and cost estimates from facilities that are not in the process of installing or planning to install a dry fly ash handling system.  Weadock facility installed a dry ash handling system that became commercially operational on February 2009.  If EPA seeks actual cost information on this installation, please contact the facility and the information will be provided as CBI.


fly_dry_cost_est_not_instl_explain:
Waiting for a report from vendor that itemizes the cost for just the dry ash/scrubber solids handling system


fly_dry_cost_est_not_instl_explain:
Dry fly ash handling equipment for which estimates were obtained since 01/01/1995 was installed during 2001.  Costs are listed on other forms.


fly_dry_cost_est_instl_explain:
Planned conversion to biomass firing is on hold pending issuance of IB MACT regulations.  Ash handling system configuration will depend on boiler selection - costs will not be available until after boiler selection.


# Fly_Ash_Dry_Retrofit

fly_retrofit_personnel_desc:
dry fly ash handling and dust control training


fly_retrofit_personnel_desc:
Training to operate the ESP silo in the most optimum way.


fly_retrofit_personnel_desc:
Training personnel on optimizing silo use


fly_retrofit_phys_other_desc:
construct long -term dry ash storage facility


fly_retrofit_phys_other_desc:
river barge loading facility constructed

fly_retrofit_personnel_desc:
Added 2 contract employees to operate river barge loading system


fly_retrofit_personnel_desc:
Training to operate the ESP silo in the most optimum way


fly_retrofit_personnel_desc:
new operation / procedures for hauling dry fly ash from silos


fly_retrofit_personnel_desc:
Hire and train additional contract personnel


fly_retrofit_personnel_desc:
Operation training of new dry ash system


fly_retrofit_personnel_desc:
Clifty hired a civil engineer, landfill supervisor, and landfill contractor to haul fly ash and construct the landfill.  Training was completed to obtain landfill operator licenses.


fly_retrofit_phys_other_desc:
Unknown, completed by previous owner of the facility


fly_retrofit_storage_landfills_ID:
Other landfill not reported on Table A-6


fly_retrofit_phys_other_desc:
Modification/installation/construction of ancillary equipment such as mechanical, electrical, and process control.


fly_retrofit_personnel_desc:
Silo 1 and Silo 2 operator training necessary to assure fly ash properly managed while Unit is running.


fly_retrofit_personnel_desc:
Training for operators of Silo 1 and Silo 2 necessary to make certain fly ash mass properly handled while Unit is running.


fly_retrofit_personnel_desc:
Daily Title V compliance activities;  hired contractor to operate silo


fly_retrofit_personnel_desc:
Add two full time Ash Handling Technicians


fly_retrofit_personnel_desc:
Added two full time Ash Handling Technicians


fly_retrofit_personnel_desc:
Required additional operator training as well as an addition of two full-time ash handling technicians


fly_retrofit_personnel_desc:
2 additional operators staffed per shift for operating system


fly_retrofit_personnel_desc:
Co-ordination with ash marketer owned/operated equipment.


fly_retrofit_personnel_desc:
Landfill mgmt, dry ash handling, fugitive dust control


fly_retrofit_personnel_desc:
A three man crew is required to haul ash to landfill; training.


fly_retrofit_phys_other_desc:
Dump trucks were purchased to haul ash to landfill

fly_retrofit_personnel_desc:
Training for use of new system. Ash handling crew is formed in years to follow.


fly_retrofit_phys_other_desc:
Dump trucks were purchased to haul ahs to landfill

fly_retrofit_personnel_desc:
Training of new system operation was required


fly_retrofit_personnel_desc:
Dry fly ash handling and dust control training


fly_retrofit_personnel_desc:
Extra personnel were hired to maintain the fly ash system.


fly_retrofit_personnel_desc:
Training - employees had to learn how to run the new system


fly_retrofit_personnel_desc:
Procedure and operational training requirements of system


fly_retrofit_personnel_desc:
Additional training on new equipment was provided to operations/maintenance personnel


fly_retrofit_personnel_desc:
How to operate and maintain a dry system.


fly_retrofit_personnel_desc:
Workers had to be trained to handle the new system.


fly_retrofit_personnel_desc:
People to operate and maintain the system.


fly_retrofit_personnel_desc:
The workers had to be trained to handle the new system.


fly_retrofit_personnel_desc:
No personnel changes needed. Training was provided to train operations to operate the dry system (B-60 and T-60 collectors, secondary collectors, and the silo).


fly_retrofit_personnel_desc:
Train operations and maintenance on new fabric filters, air compressors and dense phase ash conveying system.


fly_retrofit_personnel_desc:
Train operations and maintenance on new blowers and ash conveying system


fly_retrofit_phys_other_desc:
Installation and/or modification of electrical, mechanical, and process control equipment.


fly_retrofit_personnel_desc:
Train operations and maintenance on new blowers and fly ash conveying system.


fly_retrofit_phys_other_desc:
Operational, material handling, safety & environmental compliance requirements


fly_retrofit_personnel_desc:
Operational, material handling, safety & environmental compliance requirements


fly_retrofit_personnel_desc:
No additional personnel required.  Training was completed on new systems.


fly_retrofit_personnel_desc:
no additional permosnnel required.  Training was completed for unit changes


fly_retrofit_personnel_desc:
no additional personnel required.  Training completed for moditfications


fly_retrofit_personnel_desc:
Silo and dry fly ash delivery system maintenance and operation


fly_retrofit_phys_other_desc:
Landfill installed with ESP/Dry Fly ash system


fly_retrofit_phys_other_desc:
landfill installed with ESP/ dry fly ash system


fly_retrofit_phys_other_desc:
landfill installed with ESP/Dry Flay ash system


# Fly_Ash_Handling_Changes

fly_change_desc:
Dewatering bins added and fly ash send directly to landfill rather than sluiced to pond.


fly_change_desc:
Bottom ash wet handling possible.  Sifting fly ash may change to vacuum system to a mechanical conveyance system.


fly_change_desc:
It will depend on any regulatory changes.  AES Shady Point will use the same process as now, pay coal supplier to take fly ash for beneficial reuse/reclamation at a strip mine.  The current mine will fill up in ~3-4 yrs, another pit is already lined up for use.


fly_change_desc:
Possible switch from wet vacuum to dry vacuum


fly_change_desc:
Dewatering bins added and fly ash sent directly to landfill rather than sluiced to pond.


fly_change_desc:
add dry FGD system and collect fly ash as FGD material


fly_change_desc:
use SE Unit-2 dry fly ash system to convey fly ash to Silo 1 (intermediate storage)


fly_change_desc:
Pin mixer being installed at Silo-2; fly ash landfill is under construction


fly_change_desc:
All ash expected to be sold with additional ash being reclaimed from landfill.


fly_change_desc:
Hunlock's Coal fired boiler shut down permanently on May 22, 2010. UGI is constructing a new gas combined cycle unit at the existing Hunlock Site.


fly_change_desc:
Unit is no longer burning coal, amounts will be drastically reduced.  Ash conveying system is used only sporadically for oil ash.


fly_change_desc:
Dewatering bins added and fly ash sent direcely to landfill rather than sluiced to pond.


fly_change_desc:
Decreased use of wet flyash handling depending on regulations


fly_change_desc:
Change for biomass (i.e., non-fossil fuel)


fly_change_desc:
This plant is scheduled to be retired in 2014.


fly_change_desc:
WEC2 to commence operation in late 2010 or early 2011


fly_change_desc:
Plant expected to be placed in cold reserve in 2010.


fly_change_desc:
The facility is being converted from coal to wood biomass combustion, ash system for wood combustion to be determined


fly_change_desc:
Arapahoe will cease to burn coal at end of 2013.


fly_change_desc:
Upgrade to be installed in Spring 2011 to minimize ash entrainment in hydrovacter water


fly_change_desc:
unit is expected to stop burning coal in 2011


fly_change_desc:
#5 turbine will be retired by December 31, 2020


fly_change_desc:
#4 turbine will be retired by December 31, 2020


fly_change_desc:
synthetic gas firing with front end cleanup


fly_change_desc:
#3 turbine will be retired by December 31, 2020


# Fly_Ash_Mgmt

fly_H2O_unacpt_criteria:
Not applicable.  Use of water from Lake Superior was engineered as part of the system design/ availability.


fly_H2O_unacpt_criteria:
Plant service water has been used since inception and has always provien acceptable.


fly_H2O_unacpt_criteria:
Raw water source is the Missouri River.  No criteria for unacceptable water.


fly_H2O_unacpt_criteria:
N/A - TVA does not monitor for any criteria.  Raw water is used.


fly_H2O_unacpt_criteria:
additional corrosion criteria for fly ash system components (see comments)


fly_H2O_unacpt_criteria:
Cost of piping. General service water is piped throughout the plant.


fly_H2O_unacpt_criteria:
corrosivity criteria for ash sluicing system components as described in comments


fly_H2O_unacpt_criteria:
Dedicated well water is used to moisten ash


fly_H2O_unacpt_criteria:
Plant doesnot have any criteria for unacceptable water sources to moisten ash


fly_H2O_unacpt_criteria:
No water source criteria for moistening ash


fly_H2O_unacpt_criteria:
Use straight river water with no pre-treatment.  No other sources used.


fly_H2O_unacpt_criteria:
cos; general service water is readily available


fly_H2O_unacpt_criteria:
The plant has no established criteria for the water.


fly_H2O_unacpt_criteria:
Not applicable, as there are no acceptability criteria.


fly_H2O_unacpt_criteria:
The Water source has to be permitted.  The ash pile is regulated by a Ground Water permit and we are only permitted to use certain water streams


fly_H2O_unacpt_criteria:
(N/A)  Mill Creek uses river water (raw intake water) to sluice ash.


fly_H2O_unacpt_criteria:
Not applicable.  The site currently does not have any criteria for water used to moisten the ash other than the discharge limit for outfall 001A


fly_H2O_unacpt_criteria:
Specific criteria have not been established for the water used to moisten the ash.


fly_H2O_unacpt_criteria:
A complete engineering evaluation would need to be conducted to determine the suitability of an alternative water source.  As this evaluation has not been conducted, the acceptability criteria for an alternative water source has not been established.


fly_H2O_unacpt_criteria:
Ash is wetted with an industrial process that is purchased from our local water supplier. This water is tested and filtered by the local distributor.


fly_H2O_unacpt_criteria:
No specific criteria is used to determine if the water source is unacceptable.  Lake Erie water intake is used.


fly_H2O_unacpt_criteria:
Water availability and site water reuse issues are the only criteria.


fly_H2O_unacpt_criteria:
No critieria: municipal citywater (potable) used


fly_H2O_unacpt_criteria:
No criteria are required for water sources used to moisten flyash.


fly_H2O_unacpt_criteria:
No specific criteria used to determine unacceptability of the water source to moisten the ash.


fly_H2O_unacpt_criteria:
The ash conditioning is only designed to use cooling tower blowdown. If the water is acceptable to use in the cooling tower, it is acceptable to use to moisten the ash.


fly_H2O_unacpt_criteria:
Chloride exceeding 10,000, potential for ashwater pump corrosion


fly_H2O_unacpt_criteria:
Normal operation for conditioning of ash prior to loading is to use coal pile runoff basin water, as it is normally acidic in nature and helps neutralize the alkaline ash. If the coal pile runoff basin level is too low, raw water can be used as well as cooling tower blowdown. Cooling tower blowdown is only used when coal pile runoff basin water, or raw water are unavailable.


fly_H2O_unacpt_criteria:
There are no limits on the raw intake water used to moisten the fly ash.


fly_H2O_unacpt_criteria:
No specific criteria have been assigned.


fly_H2O_unacpt_criteria:
No documented criteria - well water is used.


fly_H2O_unacpt_criteria:
House service water is used which is transferred from the raw intake.


fly_H2O_unacpt_criteria:
The Plant does not have a criteria for the water source.


fly_H2O_unacpt_criteria:
The maximum solids % and chlorides concentration is unknown.   There are no requirements for this water. This is raw intake water from the Delaware river.


fly_H2O_unacpt_criteria:
No specific criteria used to determine if water source to moisten the ash is unacceptable.


fly_H2O_unacpt_criteria:
Cooling tower water must meet pH and TDS limit as well as % of process chemicals to be acceptable for use.


fly_H2O_unacpt_criteria:
Not applicable - water used is from once-through equipment cooling water system


fly_H2O_unacpt_criteria:
A water source cannot be used to moisten the ash if there are solids that will cause plugging in the pipes and nozzles.


fly_H2O_unacpt_criteria:
Chloride and Solids content, and pH-receiving water body salinity


fly_H2O_unacpt_criteria:
No criteria for rejecting water used to moisten ash.


fly_H2O_unacpt_criteria:
No criteria established.  Water used is clarified raw intake water.


fly_H2O_unacpt_criteria:
Criteria has not been established.  Currently use potable water.


fly_H2O_unacpt_criteria:
Only criteria: reuse some available water. We use FGD purge water from SPD-4 (purge is comingled with FDW in this pond).


fly_H2O_unacpt_criteria:
Maximum solids number based on blowdown criteria for cooling tower.  Assuming the solids leaving the cooling tower remain constant as injected into fly ash.


fly_H2O_unacpt_criteria:
proximity of wateroines to silos (e.g. cost)


fly_H2O_unacpt_criteria:
There are no criteria that dictate or restrict the use of water which is applied to fly ash


fly_H2O_unacpt_criteria:
There is never a question concerning it being unacceptable. It is always acceptable.


fly_H2O_unacpt_criteria:
Water used to moisten the ash is raw intake well water and we do not have any criteria. All of our well water is an acceptable quality.


fly_H2O_unacpt_criteria:
chlorides in make-up water, solids content and pH


fly_H2O_unacpt_criteria:
The plant uses river water per the original plan design.


fly_H2O_unacpt_criteria:
Additional corrosion criteria includes a Larson-Skold index of less than 1.2 and a Puckorious index of less than 7.  Also, the aggressiveness of a water source toward ash sluice system components (primarily ferritic iron and steel) is a complex function of numerous variables, thus, individual cases must  be evaluated based on the totality of site-specific water conditions.


fly_H2O_unacpt_criteria:
Plant has always used cooling tower blowdown and found it acceptable, no further evaluation performed.


fly_H2O_unacpt_criteria:
Plant uses municipality's water and ash slurry tank top water - both acceptable


fly_H2O_unacpt_criteria:
Water source is fairly stable chemically, no current criteria to determine unacceptability


fly_H2O_unacpt_criteria:
Cooling Tower Blowdown and Raw Water are the only sources physically piped to the ash conditioning system


fly_H2O_unacpt_criteria:
Water source is Wateree River, No design review is required.


fly_H2O_unacpt_criteria:
No such criteria have been established.  Recycled/reused water is not used to moisten the ash


fly_H2O_unacpt_criteria:
Engineering design established the criteria that ash recycle water is used for moistening the fly ash.


fly_H2O_unacpt_criteria:
Water source is well water and is not recylced.  Water gets mixed with dry ash with wetting head system prior to entering pond.


fly_H2O_unacpt_criteria:
Specific criteria have not been established for water used to moisten the ash.


fly_H2O_unacpt_criteria:
There are no restrictions on the quality of water used for wetting fly ash


fly_H2O_unacpt_criteria:
No set criteria for this water - station has always used cooling tower blowdown.


fly_H2O_unacpt_criteria:
Twice per year sampling of the cooling/service water, standards meet POTW effluent discharge limits.


fly_H2O_unacpt_criteria:
Plant only uses raw water for moistening fly ash


fly_H2O_unacpt_criteria:
cost, including proxitiy of water lines to silos.  General service water containing intake water is readily available.


fly_H2O_unacpt_criteria:
Scaling potential, gained by process experience


fly_H2O_unacpt_criteria:
FGD slurry water must be sufficiently wet for use. No criteria are used for raw intake water.


fly_H2O_unacpt_criteria:
No criteria estblished for this water source.


fly_H2O_unacpt_criteria:
We use water from our lagoon which is primarily drawn from well water and then recylced for economical reasons.


fly_H2O_unacpt_criteria:
Plant utilizes city water at drinking water standards


fly_H2O_unacpt_criteria:
Cooling tower blow down is used at all times regardless of quality.


fly_H2O_unacpt_criteria:
The water source is the station filtered water system that is supplied by on-site groundwater production wells.  The groundwater production wells are sampled and analyzed on a quarterly basis.


fly_H2O_unacpt_criteria:
We use the pond water after the solids settle and use deep water wells for makeup


fly_H2O_unacpt_criteria:
NA - Municipal drinking water is used to moisten fly ash.


fly_H2O_unacpt_criteria:
Raw water is used to moisten the ash.  There is no criteria to determine the use of this water.


fly_H2O_unacpt_criteria:
Facility utilizes raw intake water to moisten the ash exiting the silos during truck loading.  No specific water quality criteria have been established for this water source.


fly_H2O_unacpt_criteria:
Use Clean river water stream - no developed criteria for rejection of water source.


fly_H2O_unacpt_criteria:
No criteria exist for water use for moistening ash.


fly_H2O_unacpt_criteria:
There are no established guidelines or criteria for selecting a water source for this application.


fly_H2O_unacpt_criteria:
Chlorides limited to about 1000 ppm at pH of 7.0 because the piping material of construction is A53 carbon steel.


fly_H2O_unacpt_criteria:
Mississippi River water is initial source


fly_H2O_unacpt_criteria:
The water must meet the limits of our industrial wastewater discharge permit.   pH 5 - 9, (Total metals measured in mg/L) Arsenic  <3.05, Cadmium  <4.56, Chromium <4.64,


fly_H2O_unacpt_criteria:
The facility does not have criteria for the source water. Water used to condition the ash is service water that comes from the unit forebays and originates from the Fox River.


fly_H2O_unacpt_criteria:
N/A; water use is dictated by design. Only service water is available at the silo.


fly_H2O_unacpt_criteria:
No real Criteria Used. Chloride info not available.


fly_H2O_unacpt_criteria:
No criteria for use of recycled water from wastewater treatment discharge


fly_H2O_unacpt_criteria:
No criteria - municipal potable water used.


fly_H2O_unacpt_criteria:
N/A - TVA does not monitor for any criteria. Raw water is used.


# Fly_Ash_Moisten_Water

fly_H2O_criteria:
Cooling tower blowdown is used to moisten the ash.  Maximum possible chlorides and solids concentration has not previously been a consideration.


fly_H2O_WW1_other:
35% Moisture in Limestone Slurry Mixed with Fly Ash

fly_H2O_criteria:
Mixed with scrubber slurry and water to approximately 35% moisture.


storage_ID_other:
removal for use as land structural fill material.

fly_H2O_criteria:
No water quality criteria applied to water used to wet the ash. The water is for dust control only.


storage_ID_other:
Black Hills Corporation Mine Reclamation Area


storage_ID:
Stored in landfills NOT reported in Table A-6


fly_H2O_criteria:
No Criteria has been established for this water source


fly_H2O_criteria:
The maximum solids % and chlorides concentration are unknown.   There are no requirements for this water. This is raw intake water from the Delaware river.


fly_H2O_criteria:
The maximum solids % and chlorides concentration are unknown.  There are no requirements for this water.  This is raw intake water for the Delaware River.


fly_H2O_criteria:
There is no criteria for ppm chlorides or solids % for ash conditioning water.


fly_H2O_criteria:
AS listed in NPDES Permit, TSS, oil and grease, pH, Free Cl, Total Cl, Zinc, Chromium


fly_H2O_criteria:
Max % solids for Circ Water is <10 ntu and raw water max % solids is <5 ntu.


fly_H2O_criteria:
General Service water is readily available at the silo.  If a different source of water was used considerable expense would be incurred in constructing a new pumping, piping, and freeze protection system.


fly_H2O_criteria:
Anti-cementing agent is added to the water to keep the fly ash from setting up in the truck.


fly_H2O_WW1_other:
Recycled process water (includes boiler water, stormwater, plant process water, etc)


fly_H2O_criteria:
N/A - TVA does not monitor for any criteria.  Raw water is used.


fly_H2O_WW1_other:
Non potable from POTW without fluoride, final stage filtration, carbon filter contact, or corrosion inhibitor added.


fly_H2O_criteria:
Chlorides is based on NPDES discharge limit since the raw water used is a slip stream of the raw water before it enters the condenser/cooler system.  In the summer the raw water is chlorinated.  Solids is not measured


fly_H2O_criteria:
Specific criteria have not been established for the moistening water


fly_H2O_criteria:
There are no limits on raw intake water used to moisten the ash.


fly_H2O_criteria:
There is no criteria for the water used to moisten the fly ash.


fly_H2O_WW2_other:
pH neutralized waste waters from water treatment system


fly_H2O_criteria:
no criteria exists for fly ash moistening water.


fly_H2O_criteria:
Fly ash contains less than 1% moisture as it enters the silo.


fly_H2O_criteria:
No criteria have been established for this water source


fly_H2O_criteria:
Chloride and percent solids concentration not monitored in water added to fly ash.


fly_H2O_criteria:
Pond sampling performed twice per month in accordance with PA WQM Permit No. 4987201.  Analyzed for total Fe, Cr, Cu, Zn, oil & grease, TSS, and pH.


fly_H2O_WW1_other:
Conveyed dry to silo moistened for hauling


fly_H2O_criteria:
Water added immediately prior to transportation away from plant


fly_H2O_criteria:
There are no restrictions on the quality of water used for wetting fly ash


fly_H2O_criteria:
Use well water, no other criteria for the water used.


fly_H2O_criteria:
No criteria for chlorides or solids in the water used to moisten ash


fly_H2O_WW2_other:
any waste water, floor drains, cleaning, etc.


fly_H2O_criteria:
No real Criteria Used. Chloride info not available.


fly_H2O_criteria:
Max Chlorides and Max Solids not determined.


fly_H2O_criteria:
Do not monitor chlorides or solids. We use service water to moisten the ash.


fly_H2O_criteria:
% solids not a criteria used in moistening water.


fly_H2O_criteria:
there are no specifications or monitoring.  If it is wet and can be pumped it is OK.


fly_H2O_WW1_other:
Overflow water from bottom ash drag chain conveyor system


fly_H2O_criteria:
No Criteria                                                          Only Eastlake Unit 5


fly_H2O_criteria:
Ash is treated with water as prior to be loaded in to trucks.


fly_H2O_criteria:
Water is recycled after settling process in ash pond.  Well water makeup is under 500 ppm chlorides


fly_H2O_criteria:
No criteria for raw water used to moisten ash.


fly_H2O_criteria:
there is no criteria or monitoring of the ash moistening water.


fly_H2O_criteria:
% solids not available on solids for potable water


fly_H2O_criteria:
water comes from service water system to moisture condition the ash when using the wet unloader.  Service water comes from the unit forebays and originates from the Fox River


fly_H2O_criteria:
Brackish river water is used.  No limit on chlorides and solids


fly_H2O_criteria:
municipal supplied potable water is used to moisten ash.


# Fly_Ash_Outages

fly_out_2007_dry_resn:
Plugged filter separator and baghouse filters

fly_out_2007_dry_reslvd:
Complete inspection of components.  Installation of new filters in baghouse separator stones


fly_out_2005_dry_resn:
Shadowed event - Economizer tube leak.  Ash system unable to pull economizer hoppers.


fly_out_2009_dry_resn:
Baghouse filter media failed following a superheater tube rupture

fly_out_2009_dry_reslvd:
Complete change out of the filter media to a different product


fly_out_2007_dry_resn:
Fly ash blower breaker fault, tripped 4160V bus which tripped SE unit


fly_out_2008_dry_resn:
Error in the control logic caused the baghouse bypasses to open, resulting in an opacity exceedence.

fly_out_2008_dry_reslvd:
Error in the control logic was corrected.


fly_out_2006_wet_resn:
Ruptured ash line soaked SE Unit 1 (Weadock Unit 7) coal feeder controls.

fly_out_2006_wet_reslvd:
Repaired ash line and restored feeder controls.


fly_out_2009_dry_resn:
Valve disc to stem failure, plugged ash transport line

fly_out_2009_dry_reslvd:
Removed disc from transport line and replaced disc and disc arm


fly_out_2007_dry_resn:
High opacity caused by hole in bag in baghouse.

fly_out_2008_dry_resn:
High hoppers due to mechanical problem in fly ash transport system.

fly_out_2008_dry_reslvd:
Transport system was cleaned and parts were replaced.


fly_out_2009_dry_resn:
High differential pressure on baghouse caused by full bags.


fly_out_2007_dry_resn:
Fly Ash Hot Spots / Conveying Issues, Fly Ash Silo Pluggage/Clinkers

fly_out_2007_dry_reslvd:
Vacuuming ash, blasting clinkers inside silo.


fly_out_2006_wet_resn:
Ash line failure on unit 5 5/12/2006 to 5/14/2006. Total duration 27.23 hours. GADS event#0160


fly_out_2007_dry_reslvd:
Precipitators were clean via grit blasting.


fly_out_2006_dry_resn:
Baghouse compartment and/or controls problems.


fly_out_2006_dry_resn:
PLC, bag pluggage, ID Fan draft, various.


fly_out_2008_dry_resn:
High differential pressure on the baghouse.

fly_out_2008_dry_reslvd:
Valve actuator was repaired on 1A ID  booster fan variable drive.


fly_out_2006_wet_resn:
Leaks in ash conveying lines caused lines to plug.


fly_out_2005_wet_resn:
ESP not functioning properly on three separate occasions.

fly_out_2009_wet_resn:
ESP not functioning properly on two separate occasions, one of which was due to electrical grounding prolem.


fly_out_2006_wet_resn:
ESP not functioning properly once and air heater baskets clogged on two separate occasions.

fly_out_2006_wet_reslvd:
Washed ESP and unclogged air heater baskets.

fly_out_2007_wet_resn:
ESP not functioning properly on four separate occasions.

fly_out_2007_wet_reslvd:
Washed ESP once and repaired ESP on other three occasions.

fly_out_2008_wet_resn:
ESP not functioning properly and baghouse not functioning properly.


# Fly_Ash_Sluicing

fly_sluice_other_desc:
Do not have any chloride limits for ash sluice water.


fly_sluice_other_desc:
Limitations have not been established for ash sluice water


fly_sluice_recyc_desc:
Flyash sluice is sent to ash pond (SPD-1).  Solids settle out and water is reused for sluicing.


fly_sluice_recyc_desc:
Fly ash sluice water is recycled through the ash water recirculation pumps from Pond-1 back to the process.


fly_sluice_recyc_desc:
Fly ash sluice water is recycled through the ash water recirculation pumps from Pond-1 back to the process, same as Unit 1


fly_sluice_other_desc:
N/A - no limits specified for the water source


fly_sluice_other_desc:
Source water for fly ash sluice is not monitored


fly_sluice_recyc_desc:
Water from the ash disposal pond is recycled to the CTB pond for sluicing bottom and fly ash.


fly_sluice_other_desc:
ph  6-9, Additional corrosion criteria includes a Larson-Skold index of less than 1.2 and a Puckorious index of less than 7.  Also, the aggressiveness of a water source toward ash sluice system components (primarily ferritic iron and steel) is a complex function of numerous variables, thus, individual cases must  be evaluated based on the totality of site-specific water conditions.


fly_sluice_other_desc:
raw water is the design sluice water source, therefore limiting criteria for an alternative sluice water source in undetermined.


fly_sluice_recyc_desc:
Ash settles out in Ash Pond -2, water flows to Ash Pond -1 and is recycled as combined ash sluice.


fly_sluice_recyc_desc:
Ash settles out in Ash Pond 2 (SPD-2); water is returned for reuse as combined ash sluice.


fly_sluice_other_desc:
NA.  River water used.  Do not test water.


fly_sluice_recyc_desc:
The water is pumped back into the sluice system after the ash settles out in the pond


fly_sluice_other_desc:
No evaluation of acceptable criteria made.  Water used to sluice fly ash are not monitored for chlorides, or solids concentrations.


fly_sluice_recyc_desc:
The sluice water is reused again as sluice water in a loop


# Fly_Ash_Storage

storage_ID_other:
ponded Fly Ash cenospheres to Ambridge, PA.


storage_ID:
Stored in landfills NOT reported in Table A-6


storage_ID_other:
Concrete Building Storage on site for future sales


storage_ID_other:
A Dragline dredges the ash out of the storage impoundment and places it on a pile to dewater. The ash is then pushed with a dozer to dry out. Once the ash is dry it is loaded onto a truck and taken to an abandoned mine site to reclaim the land.


storage_ID_other:
Fees paid for removal for use as land structural fill material.


storage_ID_other:
Black Hills Corporation Mine Reclamation Area


storage_ID_other:
Beneficial use for Abandoned mine lands reclamation.


storage_ID_other:
#1, #2, #3, #4 CBO Loadout Product Silos


storage_ID_other:
Concrete Building at Erickson Station, plant ID 7300


storage_ID_other:
Beneficial reuse as structural fill in clay mine


storage_ID_other:
1000-ton silo to STAR and #1 650-ton Product silo


storage_ID_other:
1000-ton silo to STAR and #2 650-ton Product silo


storage_ID_other:
McMeekin processed ash in 650-ton silos sold to market


# Fly_Ash_Storage_Dest

storage_ID_other:
Stored On-Site in Concrete Building for future sales


storage_ID:
Stored in landfills NOT reported in Table A-6


storage_ID_other:
Fly ash enters the storage impoundements and settles out. A Dragline dredges the ash out and places it on a pile to dewater. The ash is then pushed with a dozer to dry out. Once the ash is dry it is loaded onto a truck and taken to an abandoned mine site to reclaim the land.


storage_ID_other:
(Fixates scrubber sludge before being landfilled)


# Fly_Ash_System

fly_collection_other:
ESP(s) dry, coldside; Baghouse(s) (fabric filter)


fly_other_desc:
Portable Vacuum Container with Air Compressor


fly_other_desc:
no conveyance - remains in hopper until removed for disposal


fly_other_desc:
no conveyance - kept in hopper until removed for disposal


fly_collection_other:
ESP, dry, hot side and ESP, dry, cold side


fly_collection_other:
Wet Scrubber Unit 3 retrofited in 2009 to a Baghouse/Fabric Filter


fly_collection_other:
ESP dry cold-side and one baghouse used by Units 1 and 2


fly_collection_other:
ESP (dry, hotside) plus baghouse (fabric filter)


fly_collection_other:
mechanical dust collector & flooded disc venturi wet scrubber


fly_collection_other:
ESP dry, cold side & Baghouse (fabric filter)


# Fly_Ash_Wet_Vacuum

fly_wet_vac_desc:
Sent to SPD-1 and SPD-2.  Overflow is sent to bottom ash sump.


fly_wet_vac_recyc_desc:
Vacuum for the flyash removal is produced by two hydrovactor systems(Primary and Back-up) by rapid flow of water through nozzels     which discharge high velocity water. The primary system operates in a closed loop that has no discharge to surface water. The Back-up system is discharged to a condenser  cooling water outfall directly to Lake Michigan meeting the discharge limits.


fly_wet_vac_recyc_desc:
Water is drawn from SPD-1 and SPD-2 by the bottom ash pumps.  The discharge of bottom ash pumps creates a vacuum on the dry fly ash system.  The vacuum transports fly ash from the precipitator hoppers to Silo 1.  Water from the bottom pump returns to ponds SPD-1 and SPD-2 to be recycled back into the system.


fly_wet_vac_desc:
Fly ash enters the storage impoundements and settles out. A Dragline dredges the ash out and places it on a pile to dewater. The ash is then pushed with a dozer to dry out. Once the ash is dry it is loaded onto a truck and taken to an abandoned mine site to reclaim the land.


fly_wet_vac_recyc_desc:
Vacuum for the flyash removal is produced by two hydrovactor systems(Primary and Back-up) by rapid flow of water through nozzels     which discharge high velocity water. The primary system operates in a closed loop that has no discharge to surface water. The Back-up system is discharged to a condenser cooling water outfall directly to Lake Michigan meeting the discharge limits.


fly_wet_vac_desc:
Sent to ash pond which discharges via Outfall 001 or 001a


fly_wet_vac_recyc_desc:
Process water is recycled through the ash water recirculation pumps from Pond-1 back to the process.


fly_wet_vac_recyc_desc:
Process water is recycled through the ash water recirculation pumps from Pond-1 back to the process, same as Unit 1


# Fly_Ash_WetAndDry

fly_mod_desc:
Wet system is only used when dry ash system is down for maintenance.  A complete second dry system would have to be installed to insure no wet fly ash handling.


fly_new_infra_desc:
Exsisting dry silos are not near potential landfill. 7000 feet of new pneumatic pipe needed.


fly_both_other_desc:
Dry ash system needed an upgrade to handle all ash (modifications made in October 2009)

fly_mod_desc:
Additional capacity added to handle all fly ash produced, see Sect. 2.4 and 2.5 for changes.


fly_both_other_desc:
due to construction activities, the truck loading facilities were not available


fly_both_other_desc:
Permit and contract issues with using dry ash system


fly_both_other_desc:
Wet fly ash handling system operated when Wateree feed ash to CBO was unsuitable for burning in CBO facility, or CBO was offline for maintenance, or low demand for CBO Product ash.


fly_both_other_desc:
Operational Requirements (See Comments section for more detail.)


fly_mod_desc:
Terminate wet sluice capabilities; possible additional redundancy


fly_both_other_desc:
new dry system went into service 12-01-2009


fly_mod_desc:
an additional ash conditioner, plus winterizing the entire system to accommodate extreme cold


fly_mod_desc:
Fly ash marketing company silo modifications require to handle startup and shutdown poor ash quaility


fly_both_other_desc:
Economiser hoppers can only be pulled with the wet system

fly_mod_desc:
Would need a dry system to remove economizer ash and would need to add a redundant dry system for back-up.


fly_both_other_desc:
Economizer hoppers can only be pulled with the wet system


fly_mod_desc:
Replace existing system with new design.


fly_mod_desc:
Duplicate the entire dry ash handling system


fly_both_other_desc:
Dry handling system was not implemented until June of 2009


fly_mod_desc:
Dry handling system was retrofited and implemented in June 2009


fly_both_other_desc:
Dry Ash System was retrofitted and implemented in November 2009

fly_mod_desc:
Dry Ash System was retrofitted and implemented in November 2009


fly_mod_desc:
Engineering study needed to specify infrastructure needed.


fly_mod_desc:
conveyance and storage for off-spec material


fly_both_other_desc:
not all hoppers set up to go to the dry fly ash handling system the rest goes to the pond


fly_both_other_desc:
Up to 10% of fly ash is carried over in HydroVAC motive water.

fly_new_infra_desc:
Install vacuum pumps to replace water-powered ejector.


fly_mod_desc:
Installation of backup water supply and power supply to silo.


fly_mod_desc:
Installation of back up water and power supply to silo


fly_both_other_desc:
Dry fly ash collection put in service 2-21-2009.  Wet fly ash handling retired.


fly_new_infra_desc:
potential landfill is opposite existing silos. 7000 feet of pneumatic lines and new silos at landfill are necessary.


fly_both_other_desc:
wet fly ash slurry to pond is used for the non-marketable fraction of the fly ash


fly_mod_desc:
A redundant dry fly ash system would be required on each SE Unit in order to handle fly ash dry 100% of the time.


fly_mod_desc:
A redundant dry fly ash system on each SE Unit would be required to eliminate unit outages without relying on a wet system for back-up.


fly_both_other_desc:
Wet flyash system used during periods of unit startup


fly_both_other_desc:
Wet Flyash System used during periods of unit startup

fly_mod_desc:
Engineeering study needed to specify infrastructure


fly_both_other_desc:
Not all hoppers can be conveyed dry, some must use wet vacuum


fly_both_other_desc:
Not all hoppers can be conveyed dry, some must use wet vacuum.


fly_both_other_desc:
Fly ash used as a FGD reagent and the Unit 1 FGD system construction prohibited access to haul dry


fly_both_other_desc:
wet fly ash slurry to pond is for the non-marketable fraction of the fly ash


fly_mod_desc:
Modifications necessary to handle all fly ash with a dry handling system are undetermined.


fly_both_other_desc:
Dry system not capable of handling the coarse ash collected in the first hopper

fly_mod_desc:
Different system would need to be installed to handle coarse ash.


# Fly_Cnvy_Capital_Cost

seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4, SE Unit-5


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


# Fly_Cnvy_Cmpnts

fly_cnvy_cmpnts_other:
FLY ASH SILO WITH SEPARATOR/COLLECTOR AND EXHAUSTER


fly_cnvy_cmpnts_other:
crossover & misc. isolation valves @ >4"


fly_cnvy_cmpnts_other:
branch line isolation valve, 6@ 10", 1@8"


fly_cnvy_cmpnts_other:
misc crossover & isolation valves @ >4" (various sizes)


fly_cnvy_cmpnts_other:
misc. crossover & isolation valves >4" (various sizes)


fly_cnvy_cmpnts_other:
Baghouse BH-300 for silos 1+2, BH360 truck loading


fly_cnvy_cmpnts_other:
Baghouse BH-410 for silo 3, Baghouse 430 for rail loading


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4, SE Unit-5


fly_cnvy_cmpnts_other:
Installing Vacuum Pumps, Controls and Piping


fly_cnvy_cmpnts_other:
Installing Vacuum Pumps, Controls and piping


fly_cnvy_cmpnts_other:
Recycle ash fabric filter dust collectors


fly_cnvy_cmpnts_other:
Instrument air compressor, dryer and receiver


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


fly_cnvy_cmpnts_other:
Electric Blowers, Motors, Gearbox and piping assembly


fly_cnvy_cmpnts_other:
SWITCH VALVES under Baghouse and over 650-ton silos


fly_cnvy_cmpnts_other:
Conveyance piping to intermediate storage


# Fly_Cnvy_General

fly_cnvy_cmpnts_not_cap_costs:
Filter/collector/airlock assembly, vacuum pumps, and control system are included in capital costs listed in Table C-11. Hoppers, conveyor, storage silo, and silo unloaders are not included in capital costs listed in Table C-11.


fly_cnvy_cntrctr_instl:
Fabric Filter Baghouse/hoppers on each - vacuum line  via pneumatic exhauster-separator/collector -dedicated fluidized silo- railcar and truck unloading


fly_cnvy_cmpnts_not_cap_costs:
Ash conveyance building already existed, but it was extended for prevention of airborne particulates.


fly_cnvy_cntrctr_oversee:
contractor loads and operates the trucks.


fly_cnvy_cntrctr_instl:
All components of the fly ash conveyance system was installed by contractors


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4

fly_cnvy_cntrctr_instl:
Ash Storage Silos, Baghouses, Ash Collection and Conveyance System, Ash Loading System, Truck Spout, Truck Scale, Pressure Conveyor with Blower, Wetting Head,

fly_cnvy_cntrctr_oversee:
Contractor responsible for all O&M activities of dry fly ash handling system, including ash collection, storage & transfer equipment, and ash loading equipment.


fly_cnvy_cmpnts_not_cap_costs:
Key components are shown in diagrams for SE Units 1, 2, 3 & 4 required in C2-31.  Cost shown in C2-34 (Table C-11) is system total for SE Units 1, 2, 3 & 4.


fly_cnvy_cmpnts_not_cap_costs:
Key components are shown in diagrams for SE Units 1, 2, 3 & 4 required in C2-31.  Cost shown in C2-34 for Unit 1 is system total for SE Units 1, 2,3 & 4.


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4, SE Unit-5


fly_cnvy_cmpnts_not_cap_costs:
Cost includes fly ash silo enclosure, pressure blower, separator/collector, dust bin level sensors, ash bin level sensors, and economizer hopper piping upgrades.  Cost does not include fly ash handling sytem (piping and valves), hopper gate system, or unloading system as this equipment was installed prior to Jan. 1, 2000.


fly_cnvy_cntrctr_oversee:
Collection of ash in SRMG silo and off-loading to trucks.


fly_cnvy_cntrctr_oversee:
Collection of fly ash in SRMG silo and off-loading to trucks.


fly_cnvy_cmpnts_not_cap_costs:
The vacuum pumps, associated controls and piping are included. Filters/Separators, pressure transfer stations, blowers and associated piping already exsist.


fly_cnvy_cmpnts_not_cap_costs:
System installed 1960 original equipment


fly_cnvy_cntrctr_instl:
Dynegy Midwest Generation, Inc. Havana Station installed the fly ash conveyance equipment. No components were installed at contractor's expense.

fly_cnvy_cntrctr_oversee:
All maintenance activities associated with the fly ash conveyance equipment are performed by DMG Havana Station personnel.


fly_cnvy_cntrctr_instl:
N/A - All contractor expenses are reimbursed by the company

fly_cnvy_cntrctr_oversee:
N/A - All contractor expenses are reimbursed by the company


fly_cnvy_cntrctr_instl:
Not applicable.  All conveyance system components constructed at plant's expense.

fly_cnvy_cntrctr_oversee:
Not applicable.  All O&M activities at plant's expense.


fly_cnvy_cmpnts_not_cap_costs:
Installation completed prior to January 1, 2000.


fly_cnvy_cntrctr_instl:
Dynegy Midwest Generation, Inc. BEC installed the fly ash conveyance equipment. No components were installed at contractor's expense.

fly_cnvy_cntrctr_oversee:
All maintenance activities associated with the fly ash conveyance equipment are performed by DMG BEC personnel.


fly_cnvy_cntrctr_instl:
Dynegy Midwest Generation, Inc. BEC personnel installed the fly ash conveyance equipment. No components were installed at contractor's expense.


fly_cnvy_cntrctr_instl:
The plant paid for the installation of all components.

fly_cnvy_cntrctr_oversee:
The plant pays for all operating and maintenance of the fly ash system.


fly_cnvy_cntrctr_instl:
interconnecting switch valves and interconnecting piping from McMeekin Baghouse to SEFA Group (Southeastern Flyash) STAR (Staged Turbulent Air Reactor) 1000-ton feed silo. STAR unit reprocesses McMeekin ash into a low carbon product for marketable flyash material sales.

fly_cnvy_cntrctr_oversee:
The SEFA STAR system is operated and maintained by SEFA under contract with South Carolina Electric and Gas.  Typical O&M activities for conveyance would be maintenance/operation/repair of switch valves and piping to 1000-ton STAR feed silo.


fly_cnvy_cmpnts_not_cap_costs:
In 2006 as part of a controls upgrade an HMIS was installed on the baghouses.


fly_cnvy_cntrctr_instl:
NA Contractor does not oversee this system

fly_cnvy_cntrctr_oversee:
NA Contractor does not oversee this system

fly_cnvy_cmpnts_not_cap_costs:
Economizer Hopper Conveying and sub systems/components


fly_cnvy_cntrctr_instl:
Piping, Fittings, Structural Steel, Concrete Piers


fly_cnvy_cmpnts_not_cap_costs:
upgraded system starts after the original SE Unit-1 hoppers and the existing piping (installed in 1990)


fly_cnvy_cntrctr_instl:
No major components constructed or installed at contractors expense.

fly_cnvy_cntrctr_oversee:
No operation and maintenance activities overseen by contractors at the contractor's expense.


fly_cnvy_cmpnts_not_cap_costs:
Original cost of Filter/Separators, blowers, and piping from ESPs to F/S are not included in costs. Included is modifying both F/S and new conveyance lines to intermediate silos.


fly_cnvy_cmpnts_not_cap_costs:
Blowers, piping from ESP to F/S, and original F/S are not in costs.  New second F/S and all piping from F/S to silos are included.


fly_cnvy_cntrctr_oversee:
Temporary storage and truck loading system.


fly_cnvy_cmpnts_not_cap_costs:
As originally installed includes replacement of (2) ash sluice pumps.  Modifications includes Flyash line containment.


fly_cnvy_cmpnts_not_cap_costs:
Includes: 2 filter separators, portion of piping system. Does not include: Vacuum blowers and remainder of piping system.


# Fly_Cnvy_OM_Cost

seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4, SE Unit-5


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


# Fly_Dry_Market

fly_dry_mkt_dest:
The exact end-use is unknown to us each time the ash is taken. However, we do know the common uses for our ash are; ground stabilization, structural fills and road base.


fly_dry_mkt_dest:
RECYCLED by 3rd Party Contractor with numerous clients


# Fly_Storage_Cmpnts

fly_storage_cmpnts:
Conveyor system (e.g., air slide, bucket conveyor)


fly_storage_cmpnts_other:
future Dry Fly Ash Storage Silo (Unit 2)


fly_storage_cmpnts_other:
future Dry Fly Ash Storage Silo (Unit 1)


fly_storage_cmpnts_other:
fabric filter baghouse/hopper conveyance line


fly_storage_cmpnts_other:
dedicated silo with separator/collector and exhauster


fly_storage_cmpnts_other:
Enclosed storage building - Divided in two compartments


fly_storage_cmpnts_other:
Air slide blower - shared w/Units 2, 3 & 4


fly_storage_cmpnts_other:
Pug mill/mixer air slide blower - shared w/Units 2, 3 & 4


fly_storage_cmpnts_other:
Pug mill/mixer scavenger fan - shared w/Units 2,3 & 4


fly_storage_cmpnts_other:
Dry loadout spout  - shared w/Units 1,2,3,& 4


fly_storage_cmpnts_other:
Dry loadout air slide - shared w/Units 1,2,3,& 4


fly_storage_cmpnts_other:
Telescopic spout dry ash unloading system


fly_storage_cmpnts_other:
Contractor-owned silo for storage of feed fly ash to STAR.


fly_storage_cmpnts_other:
#1 STAR Product silo (owned by SCE&G and maintained by STAR contractor)


fly_storage_cmpnts_other:
Conditioners for wet loadout of fly ash from Product Silo #1


fly_storage_cmpnts_other:
#2 STAR Product silo (owned by SCE&G and maintained by STAR contractor)


fly_storage_cmpnts_other:
Conditioners for wet loadout of fly ash from Product Silo #2


# Fly_Storage_General

fly_storage_cntrctr_instl:
No major components installed by contractors at the contractors expense.

fly_storage_cntrctr_oversee:
Contractor will not oversee any operation or maintenance of this system.


fly_storage_cntrctr_instl:
Contractor installed the conveying components and STI separator (separates ash into two streams high carbon and low carbon). Contractor paid 57%, Morrow 43%.


fly_storage_cntrctr_instl:
Contractor modifed existing silo, installed conveying components and STI separator (separates ash into two streams high carbon and low carbon). Contractor paid 57%, Morrow 43%.


fly_storage_cntrctr_instl:
Contractor installed product hopper, load out area and conveyor. All this equipment was new equipment installed in 2005.  Contractor paid 57%, Morrow 43%.


fly_storage_cntrctr_instl:
Contractor modified existing silo, installed conveyor, blowers and piping. Contractor paid 57%, Morrow 43%.


fly_storage_cmpnts_not_cap_costs:
New improved model of pugmill was purchased and installed.


fly_storage_cntrctr_oversee:
Contractors operates the above listed damp unloader.

fly_storage_cmpnts_not_cap_costs:
Unit 1  Fly Ash Damp unloaders and sub-system components


fly_storage_cmpnts_not_cap_costs:
Unit 2  Fly Ash Damp unloaders and sub-system components


fly_storage_cntrctr_oversee:
switch from one horizontal tank to another, transfers load to storage silo.  All maintenance on system by another plant maintenance contractor.  Drivers load trucks from silo


fly_storage_cntrctr_instl:
No major components constructed or installed at contractors expense.

fly_storage_cntrctr_oversee:
No operation and maintenance activities overseen by contractors at the contractor's expense.


fly_storage_cntrctr_instl:
Dynegy Midwest Generation, Inc. BEC personnel installed the fly ash conveyance equipment. No components were installed at contractor's expense.

fly_storage_cntrctr_oversee:
All maintenance activities associated with the fly ash conveyance equipment are performed by DMG BEC personnel.


fly_btm_share_storage_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4, SE Unit-5


fly_storage_cntrctr_oversee:
Day to day operational and minor maintenance expenses


fly_storage_cntrctr_instl:
The plant paid for the installation of all components.

fly_storage_cntrctr_oversee:
The plant pays for all operating and maintenance of the fly ash system.

fly_storage_cmpnts_not_cap_costs:
No, costs could not be separated and are included in Table C-11.


fly_storage_cntrctr_instl:
No components were installed at contractor's expense.

fly_storage_cntrctr_oversee:
All maintenance activities associated with Silo 1 are performed by DMG Hennepin Station personnel.


fly_storage_cntrctr_instl:
All major components of the intermediate storage system (Silo 2) were constructed/installed at Dynegy Midwest Generation's expense.

fly_storage_cntrctr_oversee:
All maintenance activities associated with Silo 2 are performed by DMG Hennepin Station personnel.


fly_storage_cntrctr_instl:
None - No components installed at contractors expense.

fly_storage_cntrctr_oversee:
None - No operational & maintenance activities associated with contractors expense.


fly_storage_cmpnts_not_cap_costs:
Includes: Wet Mixer, Does not include Storage Silo


fly_storage_cntrctr_instl:
Does not apply, All parts are installed and all Maint. is performed by plant personnel. Plant was built in 1951 and added to in 1969


fly_storage_cntrctr_oversee:
Loading trucks via the wet unloader and daily, minor maintenance including lubrication and washout.


fly_storage_cntrctr_oversee:
Tranport of ash, loading ash, unloading ash, building and equipment O&M


fly_storage_cmpnts_not_cap_costs:
Key components are shown in diagrams for SE Units 1 & 2 as required by C2-3. Costs shown in C2-34 (Table C-11) are system total for SE Units 1 & 2.


fly_btm_share_storage_cmpnts:
SE Unit 1, SE Unit 2, SE Unit 3, SE Unit 4


fly_storage_cmpnts_not_cap_costs:
Key components are shown in diagrams for SE Units 1, 2, 3 & 4 required in C2-31. Costs shown in C2-34 (Table C-11) is system total for SE Units 1, 2, 3 & 4.


fly_storage_cmpnts_not_cap_costs:
Wet mixer was only items added in 2005 and is included. Remainder of intermediate storage (silos, blowers, mixers, piping) was installed prior to 2000.


fly_storage_cmpnts_not_cap_costs:
Please see C2-34, Table C-11.  All capital costs are listed there including intermediate storage costs.


fly_storage_cmpnts_not_cap_costs:
Costs include the fly ash loading building, air slide conveyor, and dust-less truck loading nozzle.  Costs do not include the silo or ash fluidizing blower as they were constructed prior to Jan. 1, 2000.


fly_storage_cmpnts_not_cap_costs:
Contract was for a total system therefore the costs listed in section 2.3 include the cost of the silo and auxillaries.


fly_storage_cntrctr_instl:
All components were installed at Havana Station's expense. No components were installed at contractor's expense.

fly_storage_cntrctr_oversee:
All maintenance activities associated with the fly ash transport/disposal system are performed by DMG Havana Station personnel.


fly_storage_cntrctr_instl:
Modified existing, retired, scrubber silos to store fly ash and to offload and onload fly ash into the silos.


fly_storage_cmpnts_not_cap_costs:
Included are modifications to the three existing storage silos, new air slides, new blowers, the two new pin mixers, and building .  Not included are the storage silos and existing pin mixer as these have been installed and in use for some time.l


# Fly_Trspt_Disp_General

fly_trspt_disp_cntrctr_pay_instl:
Contractors did not construct or install any components at the contractor's expense.

fly_trspt_disp_cntrctr_pay_oversee:
Contractors will not oversee operation and maintenance activities for fly ash transport or disposal.


fly_btm_share_trspt_disp_cmpnts:
ST1, ST2, and ST3 send fly ash to Silo 1.   ST4 sends fly ash to Silo 2.  ST1, ST2, ST3, and ST4 send bottom ash to Silo 3.


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3, Silo 1, Landfill 2

fly_trspt_disp_cntrctr_pay_instl:
End dump trailer semi truck, leachate tanker trucks

fly_trspt_disp_cntrctr_pay_oversee:
Fuel cost, truck and trailer maintenance, insurance, ash mixer operation


fly_trspt_disp_cmpnts_not_cap_costs:
Installation completed prior to January 1, 2000.


fly_trspt_disp_cntrctr_pay_instl:
pneumatic bulk tank trailers  and over the road trucks

fly_trspt_disp_cntrctr_pay_oversee:
contractor changes from one horizontal tank to the other and empties filled tank into storage silo


fly_trspt_disp_cntrctr_pay_instl:
No major components of the transport/disposal system were contructed or installed at the contractor's expence.

fly_trspt_disp_cntrctr_pay_oversee:
No operation or maintenance activities for the transport/disposal system are overseen by a contractor at the contractor's expence.


fly_trspt_disp_cmpnts_not_cap_costs:
The truck scale at the fly ash silo is included in the capital cost of Table C-16.


fly_trspt_disp_other_desc:
all ash collected that is not marketed is sluiced to pond


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, Storage IDs: Silo 1, Silo 2 (Bottom ash comes from Silo 3)

fly_trspt_disp_cntrctr_pay_oversee:
Transferring ash from the storage silo to the trucks, driving trucks to final destination, unloading trucks


fly_btm_share_trspt_disp_cmpnts:
SE Unit IDs - 1 & 2    Storage ID: Landfill-1

fly_trspt_disp_cmpnts_not_cap_costs:
Capital costs are not reported in Part C.


fly_trspt_disp_cntrctr_pay_instl:
Hauling and placing activities associated with the disposal of the fly ash in Pond-1  are contracted to an outside company.

fly_trspt_disp_cntrctr_pay_oversee:
Hauling and placing activities associated with the disposal of the fly ash in Pond-1  are contracted to an outside company.


fly_btm_share_trspt_disp_cmpnts:
SE Unit ID - 1            Storage ID - LANDFILL 1


fly_trspt_disp_cmpnts_not_cap_costs:
The capital costs for the entire flyash handling system are included in the table.  Contractor's capital costs for the flyash transport trucks are not avialable and are not listed in Table C-16.


fly_trspt_disp_cntrctr_pay_oversee:
Hauling of baghouse ash to the ash pond system.


fly_trspt_disp_cmpnts_not_cap_costs:
Installation was completed prior to January 1, 2000.


fly_btm_share_trspt_disp_cmpnts:
Yes, but plant is charged separately for fly and bottom ash transport/disposal

fly_trspt_disp_cntrctr_pay_instl:
Nine trucks for transport, one road grader, two front end loaders, three water trucks, one diesel-driven well pump.

fly_trspt_disp_cntrctr_pay_oversee:
Purchase and maintain nine ash transport trucks, one grader, two front end loaders, three water trucks, and one diesel driven well pump. All this equipment required for transport and disposal.


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


fly_trspt_disp_cmpnts_not_cap_costs:
Existing trucks and trailers are being used.


fly_btm_share_trspt_disp_cmpnts:
Unit 3, 4, 5, 6, 7, 8,  and 9 (Bottom Ash is hauled from Dewatering Bins) - Same trucks are utilized for both fly ash and bottom ash when hauling to the Landfill.

fly_trspt_disp_cntrctr_pay_instl:
All transport and management of fly ash to beneficial use final destination is handled by ash purchaser/marketer - this consists of coordinating and managing ash customer hauling and utilization.

fly_trspt_disp_cntrctr_pay_oversee:
All transport and management of fly ash to beneficial use final destination is handled by ash purchaser/marketer - this consists of coordinating and managing ash customer hauling and utilization.

fly_trspt_disp_cmpnts_not_cap_costs:
Plant purchased pneumatic tanker to haul dry fly ash to Storage Silos.


fly_trspt_disp_cntrctr_pay_oversee:
Excavate ash, dewater, load onto trucks and transport to POND-3


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, Silo 1, Silo 2, Landfill-1, Other


fly_trspt_disp_cmpnts_not_cap_costs:
Installation of Pug Mills in 2007 and 2008


fly_trspt_disp_other_desc:
Flyash is sold and transported from storage silo by contractor


fly_trspt_disp_cntrctr_pay_oversee:
Unit 6 is the only dry handling and the quality control & truck loading are at a contractor's expense


fly_trspt_disp_cntrctr_pay_oversee:
marketing of our ash, loading of trucks that haul ash off site.


fly_trspt_disp_cmpnts_not_cap_costs:
Includes: Water truck for dust control on ash haul roads and one dump truck. Does not include other dump truck and roads.


fly_trspt_disp_cntrctr_pay_oversee:
Contractor ownes & Maintains the truck and provides the driver


fly_trspt_disp_cmpnts_not_cap_costs:
Installation completed prior to january 1, 2000.


fly_btm_share_trspt_disp_cmpnts:
SE Unit IDs - 1 & 2     Storage ID: POND -1


fly_trspt_disp_cntrctr_pay_instl:
Ash marketer is responsible for all transport of fly ash at marketer's expense.   Marketer coordinates all trucking and removal of fly ash. Revenue or subsidy payment is based on fly ash quality specification and agreement.

fly_trspt_disp_cntrctr_pay_oversee:
Ash marketer is responsible for all transport of fly ash at marketer's expense.   Marketer coordinates all trucking and removal of fly ash. Revenue or subsidy payment is based on fly ash quality specification and agreement.


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, Silo 1, Silo 2, Outdoor Pile 1


fly_trspt_disp_cntrctr_pay_instl:
Construction of a 300' ash haul road which connects the main plant road with an adjacent country road leading to the ash landfill.  Contractor assisted the plant with construction but most work was done by plant personnel and plant equipment.

fly_trspt_disp_cntrctr_pay_oversee:
Not expected to have any operations or maintenance activities for the road.


fly_trspt_disp_cntrctr_pay_oversee:
maintaining truck scales and weight tickets


fly_trspt_disp_cntrctr_pay_instl:
Fly ash transport/disposal equipment for SE Units 3 & 4 is owned by a contractor.  Plant owns equipment for SE Units 1 & 2.

fly_trspt_disp_cntrctr_pay_oversee:
Fly ash transport/disposal equipment for SE Units 3 & 4 is operated and maintained by a contractor.  Plant owns equipment for SE Units 1 & 2.


fly_trspt_disp_cntrctr_pay_oversee:
Operation and Maintenance of truck fleet


fly_trspt_disp_cntrctr_pay_instl:
silos, fans, ash collection and conveyance equipment, separators, hoppers, ash samplers, ash diverters with valves, converyor equipment, ash loading equipment, truck scale, blowers, wetting head


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, SE Unit-3 & SE Unit-4, Pond-2, Silo-1


fly_trspt_disp_cntrctr_pay_oversee:
Trucking.  The mine owners then use the ash to fill in parts of the mine which are no longer active.

fly_trspt_disp_cmpnts_not_cap_costs:
There are no costs.  We simply unload the ash into a contracted truck.


fly_btm_share_trspt_disp_cmpnts:
SE Unit-1, SE Unit-2, Silo 1, Silo 2, Silo 3, Silo 4, LANDFILL-2


fly_trspt_disp_cntrctr_pay_oversee:
All maintenance of trucks including fuel, repairs, etc.


fly_btm_share_trspt_disp_cmpnts:
The bottom ash is stored on site, while the fly ash is hauled to landfill for both units mentioned in this questionnaire.


fly_btm_share_trspt_disp_cmpnts:
SE Unit-3, SE Unit-4, Silo 3, Silo 4, Landfill-1

fly_trspt_disp_cmpnts_not_cap_costs:
There were no fly ash transport/disposal capital costs since January 1, 2000.  The transport system and ash burial facility were already in existence.


fly_trspt_disp_cntrctr_pay_oversee:
Transport via truck to contractor offsite facility/plant and/or transport to onsite landfill.


fly_trspt_disp_cntrctr_pay_instl:
Contractor provides trucks for the hauling o f all ash material.

fly_trspt_disp_cntrctr_pay_oversee:
Contractor provides trucks, drivers, trailers, fuel, and labor to load the trucks and to unload the trucks at the disposal faciltiy.

fly_trspt_disp_cmpnts_not_cap_costs:
Cost are included in the previous section for this system.


fly_trspt_disp_cntrctr_pay_oversee:
Contractor operates and maintains its own truck fleet


fly_trspt_disp_other_desc:
Blower and pneumatic line to ash/water mix tank

fly_trspt_disp_cntrctr_pay_instl:
All components were installed at Havana Station's expense. No components were installed at contractor's expense.

fly_trspt_disp_cntrctr_pay_oversee:
All maintenance activities associated with the fly ash transport/disposal system are performed by DMG Havana Station personnel.


fly_trspt_disp_cntrctr_pay_instl:
Carbon burn out unit and associated transfer equipment

fly_trspt_disp_cntrctr_pay_oversee:
truck and excavating, placing equipment maintenance,  operation and maintenance of carbon burn out unit


fly_trspt_disp_cntrctr_pay_oversee:
Loading dump trucks and transport to McMeekin landfill.


fly_trspt_disp_cntrctr_pay_instl:
All transport and management of fly ash to final destination is handled by ash purchaser/marketer - this consists of coordinating and managing ash customer hauling and utilization.

fly_trspt_disp_cntrctr_pay_oversee:
All transport and management of fly ash to final destination is handled by ash purchaser/marketer - this consists of coordinating and managing ash customer hauling and utilization.


# Fuel_Usage

btu_fos_nuc:
BTU gen by fos/nuc fuels greater/equal 50 per

energy_source:
fos/nuc fuels primary/secondary energy source


energy_source:
fos/nuc not primary/secondary energy source


# GW_Montr

Poll_Excd_Bkgd:
aluminum, iron manganese, sulfate, ph, TDS, arsenic sodium


Poll_Excd_Bkgd:
Arsenic, boron, calcium, chloride, magnesium, selenium, and zinc concentrations may have exceeded background concentrations.


Poll_Excd_Bkgd:
Al, Ba, Bo, Cd, Cr, Cu, Fe, Pb, Mn, Hg, Ni, pH, SO4, TDS, & Zn (state-issued standard)


Poll_Excd_Bkgd:
Al, Sb, As, Ba, Be, Bo, Cd, Cu, Fe, Pb, Mn, Hg, pH, Se, SO4, TDS, & Zn (state-issued std)


Poll_Excd_Bkgd:
Downgradient monitoring well MW-192 exceeded background concentrations of arsenic. Downgradient monitoring well MW-153 exceeded background concentrations of barium. Downgradient monitoring wells MW-190 and MW-192, and cross-gradient monitoring well MW-158 exceeded background concentrations of boron. Upgradient monitoring wells MW-133 and MW-157, cross-gradient monitoring wells MW-158 and MW-159, and downgradient monitoring wells MW-153, MW-154, MW-155, MW-191, and MW-192 exceeded background concentrations of chloride. Cross-gradient monitoring well MW-158 exceeded background concentrations of iron. Downgradient monitoring wells MW-154, MW-191, and MW-192, and cross-gradient monitoring well MW-158 exceeded background concentrations of magnesium. Upgradient monitoring well MW-133 and downgradient monitoring well MW-192 exceeded background concentrations of manganese. Upgradient monitoring wells MW-133 and MW-156, cross-gradient monitoring well MW-159, and downgradient monitoring wells MW-153, MW-155, MW-190, MW-191, and MW-192 exceeded background concentrations of selenium. Upgradient monitoring wells MW-133, MW-156, and MW-157 cross-gradient monitoring well MW-158, and downgradient monitoring wells MW-153, MW-154, MW-155, MW-190, MW-191, MW-192 exceeded background concentrations of sulfate. Upgradient monitoring wells MW-133. MW-156, and MW-157, cross-graident monitoring wells MW-158 and MW-159, and downgradient monitoring wells MW-155, MW-191, and MW-192 exceeded background concentrations of zinc.


Poll_Excd_Bkgd:
Cadmium, Chloride, Copper, Iron, Lead, Mercury, Selenium, Vanadium, Zinc,


Poll_Excd_Bkgd:
Arsenic, Beryllium, Cadmum, Chromium,Chloride, Copper, Iron, Lead, Nickle, Vanadium


Poll_Excd_Bkgd:
Dissolved Al, Dissolved Sb, Dissolved Be, Dissolved Bo, Dissolved Cd, Dissolved Fe, Dissolved Pb, Dissolved Mo, pH, SO4, Dissolved Tl, & TDS (state-issued standard)


Poll_Excd_Bkgd:
selenium, mercury, lead, zinc,  and conductivity


Poll_Excd_Bkgd:
Cadmium, copper, mercury,nickel, selenium, total dissolved solids, zinc


Poll_Excd_Bkgd:
sodium and boron based on the last 5 years of data


Poll_Excd_Bkgd:
calcium and magnesium within the last 5 years


Poll_Excd_Bkgd:
As, Cd, Ca, Cr, Cu, Pb, Mg, Hg, Ni, Se, Na


Poll_Excd_Bkgd:
Al, As, Bo, Ca, Mg, Mn, Mo, pH, SO4, & TDS (state-issued standard)


Poll_Excd_Bkgd:
boron, barium, sulfate, calcium, magnesium, chloride, zinc, copper


Poll_Excd_Bkgd:
pH, temperature, total dissolved solids, Cl, Sulfate, total organic carbon, K, P


Poll_Excd_Bkgd:
Iron Dissolved:MW6R, MW7. Manganese Dissolved: MW7, MW13. Aluminum Dissolved: MW12R


Poll_Excd_Bkgd:
Manganese Dissolved: MWFGDW3, MWFGDW4, MWFGDW5, MWFGDW6. Aluminum: MWFGDW4. Chloride: MWFGDW5.


Poll_Excd_Bkgd:
Chloride: MW8. Manganese Dissolved: MW10. Nitrogen Nitrate: MW10.


Poll_Excd_Bkgd:
TSS: MW1, MWG1, MWG5, MWG6.  Barium: MW1, MWG2. Iron Dissolved: MWG1, MWG2, MWG6. Manganese Dissolved: MWG1, MWG2. Sulfate: MWG1, MWG6. Boron Dissolved: MWG1.


Poll_Excd_Bkgd:
total organic carbon, boron, chemical oxygen demand, field pH, specific conductance, total sulfate, total dissolved solids


Poll_Excd_Bkgd:
barium, magnesium, zinc, chloride, sulfate


Poll_Excd_Bkgd:
magnesium, selenium, sulfate, zinc, chloride, barium


Poll_Excd_Bkgd:
pH, specific, conductivity, magnesium, potassium, selenium, sodium, sulfate, TDS, chloride


Poll_Excd_Bkgd:
specific conductivity, arsenic, chloride, chromium, copper, iron, manganese, mercury, magnesium, nickel, potassium, selenium, sodium, sulfate, zinc, TDS, TSS, pH, aluminum,


Poll_Excd_Bkgd:
potassium, strontium, bis(2-ethylhexylphthalate), specific conductance, barium, boron, nitrate-nitrite, sodium, sulfate


Poll_Excd_Bkgd:
TDS, Ca, Mg, Na, Cl, SO4, As, Ba, B, Cd, Cu, Pb, Ni, Ag, An, Se, Hg


Poll_Excd_Bkgd:
chromium, copper, lead, mercury, zinc,  chlorides, sulfates


Poll_Excd_Bkgd:
cadmium, chromium, copper, lead, mercury, selenium, zinc, chlorides, conductivity, turbidity


Poll_Excd_Bkgd:
Background concentrations defined as concentrations in upgradient well MW-5. Downgradient well concentrations were higher for lead, manganese, selenium, and zinc.


Poll_Excd_Bkgd:
Background concentrations defined as concentrations in upgradient well MW-1. Downgradient well concentrations were higher for arsenic, barium, iron, manganese, selenium, and zinc.


Poll_Excd_Bkgd:
Al, As, Bo, Cd, Cu, Fe, Pb, Mn, Hg, Ni, & SO4 (state-issued standard)


Poll_Excd_Bkgd:
TDS, Ca, Cr, Mg, Na, Cl, SO4, Ba, Cu, Pb, Zn, Hg


Poll_Excd_Bkgd:
TDS, Ca, Mg, Na, SO4, Ba, Cd, Cu, Pb, Ni, Zn, Se, Hg


Poll_Excd_Bkgd:
TDS, Ca, Mg, Na, SO4, As, Ba, B, Cr, Cu, Pb, Ni, Ag, Zn


Poll_Excd_Bkgd:
TDS, Ca, Mg, Na, Cl, SO4, B, Cu, Zn, Se, Hg


Poll_Excd_Bkgd:
Boron, Manganese, Molybdenum, Barium, Sulfate, Calcium, Sodium, Magnesium, Arsenic, TDS, Iron, Copper, pH, Chloride, Lead, Cadmium


Poll_Excd_Bkgd:
pH, Conductivity, TDS, Ca, Mg, SO4, Cl, Na, Alk, HCO3, F, B


Poll_Excd_Bkgd:
Barium, Nickel, Iron, Magnesium, Manganese


Poll_Excd_Bkgd:
Nitrate (dissolved as N) and Chloride (dissolved)


Poll_Excd_Bkgd:
Background concentrations have not yet been established for SPD-4 and SPD-5.


Poll_Excd_Bkgd:
Boron, Chloride, Sulfate, Total Dissolved Solids, Hardness, and pH.


Poll_Excd_Bkgd:
Boron, Chloride, Total Dissolved Solids, Hardness, and pH.


Poll_Excd_Bkgd:
Iron, cadmium, nitrate/nitrogen, flouride, manganese, and sulfate may have exceeded background concentrations.


Poll_Excd_Bkgd:
Downgradient monitoring well MW-4A exceeded the background concentration for zinc. Downgradient monitoring well MW-12 exceeded the background concentration for iron.


Poll_Excd_Bkgd:
Downgradient monitoring well MW-14 exceeded the background concentration for selenium.


Poll_Excd_Bkgd:
Downgradient monitoring well MW-6B exceeded the background concentration for iron. Downgradient monitoring wells MW-8B and MW-16 exceeded the background concentrations for iron, manganese, and zinc. Downgradient monitoring well MW-15 exceeded the background concentrations for barium, iron, manganese, and selenium.   Downgradient monitoring well MW-17 exceeded the background concentration for barium, manganese, and zinc.


Poll_Excd_Bkgd:
Ca, Mg, Na, Cl, Ba, Be, Co, Cu, Ni, Ag, Zn, Hg


# Landfill_Expansion

Ldfl_Exp_desc:
Shortly after construction ended, the expansion was approved for management of waste by the State in 2009.  The new unit is located directly beside the existing one and adds about 70 acres to the existing 80 acre monofill.  It is the same hight, 25ft, and will hold about 65,000,000 sqft.


Ldfl_Exp_desc:
11/2000 - Landfill was expanded 250 feet to the north while capping the southern portion of the landfill with two feet of clay topped with 3 feet of soil, keeping the active area to 3 acres.     9/2004 - Landfill was expanded 350 feet to the north to allow for a lower sloped haul road for the haul trucks to more easily reach the top.  This increased the active area to 5 acres.


Ldfl_Exp_desc:
Stage 3A -horizontal expansion within the 57 acre area; started in early 2000's and completed filling in 2009. Area =12.5 acres, volume = 14,200,000cf; height = 37ft.  Stage 4 - vertical expansion within the 57 acre area; started liner construction in June 2008 with expected Oct. 2010 completion; area = 10.3 acres; capacity = 9,302,000 cf; height of 76 ft.


Ldfl_Exp_desc:
Expansion was conducted prior to the year 2000.


Ldfl_Exp_desc:
Sept. 2007 - cell 1 in service, surface area 6.1 acres, 1,028,000 cubic feet stored materials, and 4 feet high. Oct. 2007 - cell 2 in service, surface area 6.1 acres, (total 12.2 acres); 5,422,000 cubic feet stored materials (combined), and 15 feet high. Aug. 2008 - cell 3-south in service, surface area 5.4 acres (total 17.6 acres), 6,362,900 cubic feet stored materials (combined), and 4 feet high. Oct. 2008 - cell 3-north in service, surface area 5.4 acres (total 23 acres), 21,466,000 cubic feet materials stored (combined, as of 7/23/2010), and 29 feet high.


Ldfl_Exp_desc:
In 2005, a lateral and vertical expansion was permitted. To date, the landfill operation has expanded only vertically, within the original footprint, from the original 20' height to 40' height. This increase in height occurred between 2009 and 2010 during which time approximately 9,432,099 cubic feet of material was disposed.


Ldfl_Exp_desc:
Expanded approx. 10 acres, 50 feet vertically, in small increments as space was needed, totalling 21,280,000 cubic feet.


Ldfl_Exp_desc:
In September 2008, a landfill expansion was approved by the New Mexico Environment Department to expand the landfill from 51 acres to 97 acres, with approximately 25,000,000 cubic yards to be stored to an ultimate height of 100 feet.  The expansion in being conducted in cells, preparing the area in 5 sections sequentially as needed (harvesting cover soil for final cover).


Ldfl_Exp_desc:
See attached drawing C895057.  Phase IV -2003, 2004, 2010


Ldfl_Exp_desc:
Lateral expansion occurred in 2001.  Start surface area 86 acres; end surface area 131.3; volume start 398,556,990 cf, volume end 521,326,260; start height 510 feet, no verticle expansion end height 510 feet.  Expansion date 5/2001.


Ldfl_Exp_desc:
same area as licensed - it was built in phases


Ldfl_Exp_desc:
Expansion occurred prior to January 1, 2000


Ldfl_Exp_desc:
Expansion is 58.48 ac.  Increased airspace at the time of design (1999) by 1,022,452,875 cubic feet. Increased height by 255 ft.  Expansion approved 2/2005.


Ldfl_Exp_desc:
There has been a vertical expansion.  The Landfill is currently being laterally expanded.  Starting dimensions: 99 acres, 323190000 ft3, 166 ft   Ending Dimensions: 120.4 acres, 552690000 ft3,  250 ft    Date Vertical Expansion: Nov/2006 Date Lateral Expansion: 4/2010


Ldfl_Exp_desc:
In  December of 2008 the expansion area stage III was constructed.  The plant expects to begin using this area in 2011.  This expansion was within the permitted boundaries.  This expansion covers approximately 70 acres and will provide the 150,000,000 cubic feet of volume shown in question F3-3.


Ldfl_Exp_desc:
March 2005 expansion was over approximately 22 acres to a final height of 110 feet.


Ldfl_Exp_desc:
4/2005 construction of Phase 3 of Landfill-1 began, completed and accepting ash 6/2006.  Phase 3 increased the existing 14 acres by 7.8 acres.  Phase 3 is anticipated to accept up to 1.1 million cubic yards of ash completed to a height of approximately 280 ft amsl.   Expected end of life (closure) of Phase 3 is year 2020.


Ldfl_Exp_desc:
n/a (Note: Landfill closed in summer of 2001.  Presently working on project to recap with liner and install a seepage collection system near the toe and along the perimeter of the landfill).


Ldfl_Exp_desc:
No expansions since January 1, 2000 because it had been retired.


# Landfill_General

landfill_desc:
Active Coal Combustion byproduct disposal site


landfill_desc:
Inactive coal combustion byproduct disposal site


landfill_desc:
Mill Creek Special Waste Landfill-Site A


landfill_desc:
Mill Creek Special Waste Landfill-Site C


landfill_desc:
Mill Creek Special Waste Landfill-Site B


landfill_desc:
Cane Run Special Waste Landfill-Permit Modification


landfill_desc:
Presque Isle Power Plant Ash Landfill #3


landfill_desc:
Presque Isle Power Plant Ash Landfill #1


landfill_desc:
Presque Isle Power Plant Ash Landfill #2


landfill_desc:
Danskammer Solid Waste Management Facility


landfill_desc:
Conditionally Exempt Combustion Waste Landfill


landfill_desc:
Glen Lyn Industrial Waste Landfill, Permit 222


landfill_desc:
Clinch River Industrial Waste Landfill, Permit 223


landfill_desc:
Possum Hollow Industrial Waste Landfill, Permit 607


# Landfill_Leachate_Dest

Ldfl_Leach_Dest_Other_desc:
Rainfall evaporates or is used for dust suppression around LANDFILL-1


Ldfl_Leach_Dest_Recyc_desc:
Recycled back into the landfill for flyash dust control.


Ldfl_Leach_Dest_Recyc_desc:
Transferred to SPD-4; Effluent from SPD-4 is transferred to SE UNIT-3 cooling tower supply.


Ldfl_Leach_Dest_Recyc_desc:
Used for fugitive dust control on active dry fly ash landfill cells.


Pond_ID:
SPD-6, SPD-7.  SPD-5 is capable of receiving leachate but does not typically.


Ldfl_Leach_Dest_Recyc_desc:
Trucked to active surface of LANDFILL-1 for hydration.


Pond_ID:
SPD-1 via gravity, then SPD-2 and then to SPD-10


Pond_ID:
The leachate goes to a sump and then is pumped to SPD-10


Ldfl_Leach_Dest_Other_desc:
Leachate is collected and then conveyed to SPD-7. The leachate is then sent to SPD-3 or SPD-4, and then to SPD-5, and then to SPD-6, and then to NPDES Outlet 001.


Ldfl_Leach_Dest_Recyc_desc:
Some leachate water is used for a truck wash which is then routed back to the pond.

Ldfl_Leach_Dest_Other_desc:
Leachate is also routed to a second Outfall 0IN00101002


Ldfl_Leach_Dest_Recyc_desc:
Comingled with plant make-up water for cooling water system


Ldfl_Leach_Dest_Other_desc:
perimeter drain- no known leaks or leachate


# Landfill_Liner

Ldfl_Liner_Type:
6 oz/sy geotextile bonded  to both sides of geonet


Ldfl_Liner_Type:
natural geologic formation - Pierre Shale below facility


# Landfill_OM_Cost

Ldfl_OM_Other2:
Mowing, trimming & clean out for various landfill areas


Ldfl_OM_Other1:
Landfill costs (all in price of $7.22/ton placed)


# Landfill_Storage

landfill_stor_other1:
concrete, stack brick, construction material


landfill_stor_other1:
organic and inorganic silt (lime sludge)


landfill_stor_other2:
low volume wastes as defined in 40CFR 423.11


landfill_stor_other1:
Non-combustable, non-hazardous, and non-putrescible solids.


landfill_stor_other1:
boiler debris, gunnite insulating material


landfill_stor_other1:
Ash basin, lagoon and neutralization basin sludges, sediment basin sludge, ash disposal site sediment pond sludge, cooling tower sediment, spent oil dry material, blasting media, pyrites


landfill_stor_other1:
Ash basin, lagoon and neutralization basin sludges, LSI sediments, cooling tower basin sediment, spent oil dry materials, blasting media, pyrites, treatment wetland cleanout material, refractory materials, C&D wastes, FGD IWWT sludge, limestone, ground limestone, limestone slurry (if passing TCLP)


landfill_stor_other1:
Fill materials, treated wood, wall coverings, drywall, non-abestos insulation, roofing materials, etc.


landfill_stor_other1:
FGD Disposal Site Sediment Pond Sediment

landfill_stor_other2:
Wastewater Treatment and Sediment Basin Sludge


landfill_stor_other1:
Boiler blowdown and cooling tower blowdown used for ash conditioning


landfill_stor_other1:
This is a proposed future landfill.  Sunnyside does not have any information on this landfill yet.


landfill_stor_other1:
Wastewater Treatment Sediment; CCB Landfill Settleing Pond Sediment; Springdale Passive Wetland Treatment Sediments; Spent Sand Blasting Material


landfill_stor_other1:
Evaporation pond sediment during pond relining projects.


landfill_stor_other1:
limited amounts of plant generated solid waste


landfill_stor_other2:
brine concentrator sludge and residual water


landfill_stor_other3:
FGD residue material that is removed from settling or clarifier stages of the associated waste water treatment facility.  The filter cake is dewatered.


landfill_stor_other4:
Coal mill rejects, waste limestone material


landfill_stor_other1:
Waste water treatment solids (metal hydroxide sludge)


landfill_stor_other1:
Coal Mill Rejects, Asbestos Cement Boards, Wood, Paper, Nonhalogenated Plastics, Glass Reinforced Plastic

landfill_stor_other2:
Halogenated Palstics, Calcium Silicate Insulation, Refractory Waste, Blasting Sand- Steel Work, Blasting Sand- Cooling Towers , Bagfilters

landfill_stor_other3:
Cooling Tower Basin Sediment, Wastewater Sump and Detention Basin Treatment Sediment, Filter Media/Resins

landfill_stor_other4:
Wood waste and Captive C&D Waste, River Intake Sediment, Empty Containers Packaging


landfill_stor_other1:
Process waters inclusive of the following: air heater,boiler blowdown,coal pile runoff, demineralizer regenerant and yard drains


landfill_stor_other2:
Inorganic and biological water and wastewater treatment plant sludges


landfill_stor_other1:
Sediment from SPD-1 through SPD-12 & RET-SPD-1 through RET-SPD-3

landfill_stor_other2:
Inorganic  water and wastewater treatment plant sludges


landfill_stor_other3:
low volume waste as defined by 40CFR 423.11


landfill_stor_other3:
water from SPD-2 for FGD waste dust control


landfill_stor_other3:
Lime and soda ash from transportating or unloading spills


landfill_stor_other1:
construction debris and power plant outage refuse (insulation, metal,wood,pipe, wire,plastics, ect)

landfill_stor_other3:
PCS (minor contaminated soil from diesel, oil or grease spills)

landfill_stor_other4:
Cooling tower sludge(predominantly windblown slit and water)


landfill_stor_other4:
other inert and non hazardous materials(shipping containers wood pallets, power plant trash, road repair materials, rubber hoses, power poles, plastic liners,ect)


landfill_stor_other4:
Excavated soils (not contaminated with oil)


landfill_stor_other2:
Waste materials collected as a result of general house-cleaning, maintenance and/or repair.


landfill_stor_other1:
Chloride Purge Stream Solids from the FGD Wastewater Treatment Plant


landfill_stor_other1:
Coal combustion by-products; coal pile sludge; wastewater lagoon sludge; spent filter materials; spent ion-exchange resin; sand blast grit; construction/demolition materials; soil materials derived from river dredgings; excavated soil not contaminated with oil; screen house intake debris; boiler refractory materials; & pyrites.


# Leach_General

leach_no_aerial_desc:
A drawing with the required information is attached.


# Leach_Smpl_Data

Leach_Method_Qual:
Results reported between the MDL and LOQ are less certain than results at or above the LOQ


Leach_Method_Qual:
Detected in field blank at less than 5 times the sample result


Leach_Method_Qual:
Results reported between the MDL and Limit of Quantitation are less certain than results at or above the LOQ.


Leach_Method_Qual:
Detected in laboratory blank at less than 8 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 45.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 3 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 17 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 2 times the sample result


Leach_Method_Qual:
Result estimated below the lowest calibration standard


Smpl_Loc_Desc:
Leachate Underdrain #001 LBR Landfill- 08/26/10


Leach_Method_Qual:
See Comments for explanation of qualifiers: B


Leach_Method_Qual:
Detected in laboratory blank at less than 12.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 145 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 8.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 7 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 32.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 9.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 11.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 4 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 10 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 1.4 times the sample result


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #2- 08/05/10


Leach_Method_Qual:
Elevated Reporting Limit. The reporting limit is elevated due to matrix interference. Estimated result. Result less than RL.


Smpl_Loc_Desc:
7/29/2010 treated sample taken at outfall


Leach_Method_Qual:
Elevated Reporting Limit. The reporting limit is elevated due to matrix interference.


Smpl_Loc_Desc:
Influent - South side of Somerset Basin (SPD-6) sampled 7/27/10


Leach_Method_Qual:
Detected in laboratory blank at less than 15 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 5 times the sample result


Smpl_Loc_Desc:
U5 FAP SE Corner Ditch Location #5- 9/17/10


Leach_Method_Qual:
Duplicate precision not within acceptance criteria.  Result is estimated. Analyte concentration less than or equal to MDL


Smpl_Loc_Desc:
LM03(408)-Effluent from Phase II (Stage I & II Liner System)

Leach_Method_Qual:
See Comments for explanation of qualifiers: U


Leach_Method_Qual:
Analyte detected at a level less than the RL and greater than or equal to the MDL


Smpl_Loc_Desc:
LM07(1108)-leachate collection system of the lined Phase IV area


Leach_Method_Qual:
lab considers result an estimate because >MDL, but <MRL


Smpl_Loc_Desc:
LM05(908)-leachate collection system of the Phase III liner


Leach_Method_Qual:
Analyte concentration between MDL and MRL.  Result should be considered an estimate.


Smpl_Loc_Desc:
008-Treated Landfill-1, treated SPD-4 & untreated Pond 2


Leach_Method_Qual:
Detected in laboratory blank at less than 4.5 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 3.5 times the sample result


Smpl_Loc_Desc:
Leachate runoff pipe at landfill - 7/23/10


Leach_Method_Qual:
Result estimated, above MDL but lower than the Reporting Limit.


Leach_Method_Qual:
see attached laboratory sample results and QA/QC


Smpl_Loc_Desc:
8/5/2010 treated sample taken at outfall


Leach_Method_Qual:
U-Indicates the compound was analyzed for but not detected


Smpl_Loc_Desc:
8/5/2010 untreated sample taken at inlet of Wastewater Treatment Facility (WWT-1)


Leach_Method_Qual:
Detected in laboratory blank at less than 59 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 1 times the sample result


Leach_Method_Qual:
Detected in laboratory blank at less than 21.5 times the sample result


Smpl_Loc_Desc:
Leachate Underdrain #001 LBR Landfill- 08/19/10


Leach_Method_Qual:
The value is estimated. The analyte was detected but at a level below the quantitation limit/reporting limit.


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #2- 08/26/10- A SAMPLE WAS NOT COLLECTED, THERE WAS NOT ANY WATER FLOWING NOR POOLED IN THIS LOCATION


Smpl_Loc_Desc:
Influent - East side of Lake Ontario Basin (SPD-7) sampled 7/27/10


Smpl_Loc_Desc:
Influent - West side of Lake Ontario Basin (SPD-7) sampled 7/27/10


Leach_Method_Qual:
Detected in laboratory blank at 150 ug/L


Leach_Method_Qual:
Result was estimated below the lowest calibration standard


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #2- 08/19/10- A SAMPLE WAS NOT COLLECTED, THERE WAS NOT ANY WATER FLOWING NOR POOLED IN THIS LOCATION


Smpl_Loc_Desc:
Influent - South side of Somerset Basin (SPD-6) sampled 8/11/10


Leach_Method_Qual:
Results reported between the MDL and LOQ


Leach_Method_Qual:
Analyte was not detected at or above the method detection limit


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #1- 08/19/10


Smpl_Loc_Desc:
Sporn Plant; U5 FAP Toe Drain Monitoring Location #3- 08/12/10


Leach_Method_Qual:
lab considers this result an estimate becaause >MDL, but <MRL


Smpl_Loc_Desc:
Leachate runoff pipe at landfill - 7/23/2010


Smpl_Loc_Desc:
Influent - East side of Lake Ontario Basin (SPD-7) sampled 8/3/10


Smpl_Loc_Desc:
Influent - West side of Lake Ontario Basin (SPD-7) sampled 8/11/10


Smpl_Loc_Desc:
Leachate runoff pipe at landfill - 8/6/2010


Leach_Method_Qual:
lab considers this result an estimate because it is >MDL, but <MRL


Leach_Method_Qual:
Detected in laboratory blank at less than 5.5 times the sample result


Leach_Method_Qual:
Results reported between the method detection limit (MDL) and limit of quantitation (LOQ) are less certain than results at or above the LOQ.


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #1- 08/12/10


Leach_Method_Qual:
lab considers result an estimate because >MDL, but<MRL


Smpl_Loc_Desc:
Influent - South side of Somerset Basin (SPD-6) sampled 7/20/10


Smpl_Loc_Desc:
Leachate Underdrain #001 LBR Landfill- 08/12/10


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #1- 08/26/10


Leach_Method_Qual:
Analyte concentration less than or equal to MDL


Leach_Method_Qual:
Reporting limit raised due to sample matrix effects.


Leach_Method_Qual:
Analyte detected at a level less than the reporting limit (RL) and greater than or equal to the method detection limit (MDL).  Concentrations within this range are estimated.


Smpl_Loc_Desc:
7/22/2010 treated sample taken at outfall


Smpl_Loc_Desc:
7/29/2010 untreated sample taken at inlet of Wastewater Treatment Facility (WWT-1)


Smpl_Loc_Desc:
Leachate runoff pipe at landfill - 7/30/2010


Smpl_Loc_Desc:
Influent - East side of Lake Ontario Basin (SPD-7) sampled 7/20/10


Leach_Method_Qual:
Method blank contamination. The associated method blank contains the target analyte at a reportable level.


Leach_Method_Qual:
Detected in laboratory blank at 30.7 ug/L


Leach_Method_Qual:
Result reported below the lowest calibration standard


Leach_Method_Qual:
lab considers result an estimate because >MDL, but<MRL and QC spike recovery below acceptable limits


Smpl_Loc_Desc:
Influent - South side of Somerset Basin (SPD-6) sampled 8/3/10


Smpl_Loc_Desc:
LM10(1408)-leachate collection system of the unlined Phase IV area


Smpl_Loc_Desc:
LM01(208)-leachate collection system of the Phase 1 liner


Leach_Method_Qual:
See Comments for explanation of qualifiers: J-N, U


Leach_Method_Qual:
I-the reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.


Smpl_Loc_Desc:
8/12/2010 untreated sample taken at inlet of Wastewater Treatment Facility (WWT-1)


Smpl_Loc_Desc:
U5 FAP Toe Drain Monitoring Location #3- 08/05/10


Smpl_Loc_Desc:
8/12/2010 treated sample taken at outfall


Leach_Method_Qual:
Detected in laboratory blank at less than 4times the sample result


Leach_Method_Qual:
Analyte detected at a level less than the RL and greater than the MDL


Leach_Method_Qual:
no result - sample was erroneously discarded by lab


Leach_Method_Qual:
lab considers the result an estimate, because >MDL, but <MRL


Leach_Method_Qual:
See Comments for explanation of qualifiers: J, B


Smpl_Loc_Desc:
U5 FAP Toe Drain Monitoring Location #3- 08/26/10


Leach_Method_Qual:
lab considers this result an estimate because >MDL, but <MRL


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #2- 08/12/10- WAS NOT ABLE TO COLLECT A SAMPLE DUE TO HIGH WATERS AFTER HEAVY RAIN


Smpl_Loc_Desc:
U5 FAP Toe Drain Monitoring Location #3- 08/19/10


Leach_Method_Qual:
RL1 = RL raised due to sample matrix effects, J = Estimated value


Smpl_Loc_Desc:
7/22/2010 untreated sample taken at inlet of Wastewater Treatment Facility (WWT-1)


Smpl_Loc_Desc:
U5 FAP SE Corner Ditch Location #5- 09/02/10


Smpl_Loc_Desc:
Influent - West side of Lake Ontario Basin (SPD-7) sampled 8/3/10


Smpl_Loc_Desc:
U5 FAP SE Corner Ditch Location #5- 08/26/10


Smpl_Loc_Desc:
BAP Toe Drain Monitoring Location #1- 08/05/10


Smpl_Loc_Desc:
U5 FAP SE Corner Ditch Location #5- 09/10/10


Smpl_Loc_Desc:
Leachate Underdrain #001 LBR Landfill- 08-05-10


Leach_Method_Qual:
Duplicate precision not within acceptance criteria.  Result is estimated.  Analyte concentration between MDL and MRL.  Result should be considered an estimate.


Leach_Method_Qual:
See Comments for explanation of qualifiers: J


Leach_Method_Qual:
Analyte was detected in the associated Method Blank


Leach_Method_Qual:
Results reported between the MDL and LOQ are less certain


Leach_Method_Qual:
Spike recovery not within acceptance criteria.  Result is estimated


Leach_Method_Qual:
I-the reported value is between the laboratory method detection limit and the laboratory practical quantitation limit. V-Indicates the analyte was detected in both the sample and the associated method blank.


Smpl_Loc_Desc:
Site "J", leachate influent to landfill pond


Leach_Method_Qual:
Analyte detected at level less than the RL and greater than MDL


Smpl_Loc_Desc:
Influent - West side of Lake Ontario Basin (SPD-7) sampled 7/20/10


Leach_Method_Qual:
Reporting Limit increased due to matrix interference - Molybdenum Oxide being formed in the Argon plasma.


Leach_Method_Qual:
Method blank contamination. The associated method blank contains the target analyte at a reportable level.Elevated Reporting Limit. The reporting limit is elevated due to matrix interference. Estimated result. Result less than RL


Smpl_Loc_Desc:
Leachate collection pipe on northeast corner of Area 1 Landfill


Leach_Method_Qual:
lab considers this result an estimate because >MDT, but <MRL


Leach_Method_Qual:
lab considers result to be an estimate because >MDL, but <MRL


Smpl_Loc_Desc:
Influent - East side of Lake Ontario Basin (SPD-7) sampled 8/11/10


Leach_Method_Qual:
Analyte concentration between MDL and MRL.  Result should be considered an estimate., Estimated value


Leach_Method_Qual:
Analyte detected at a level less than the reporting limit and greater than or equal to the MDL.  Concentrations within this range are estimated.  The MS and/or MSD were outside control limits.


Leach_Method_Qual:
Detected in laboratory blank at 196 ug/L


Leach_Method_Qual:
V-Indicates the analyte was detected in both the sample and the associated method blank.


Leach_Method_Qual:
See Comments for explanation of qualifiers: N, U


Leach_Method_Qual:
Hold time and/or preservative requirements not met.  Result is an estimate


Leach_Method_Qual:
lab considers this result to be an estimate because >MDL, but <MRL


Leach_Method_Qual:
Detected in laboratory blank at 0.91 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 0.96 ug/L


Leach_Method_Qual:
lab considers this result to be an estimate because >MDL, but < MRL


Leach_Method_Qual:
B1 = Analyte detect. in assoc. MB, M =  MS,MSD,RPD outside accpt. limits


Leach_Method_Qual:
M = MS,MSD, and/or RPD outside of accpt. limits due to matrix interference


Leach_Method_Qual:
See Comments for explanation of qualifiers: J, U


Leach_Method_Qual:
Results reported between the MDL and LOQ are less certain. Analyte was detected in Method Blank.


Leach_Method_Qual:
Detected in laboratory blank at 22.0 ug/L


Leach_Method_Qual:
Ba MS and MSD recovery was 66 %, Lab range 70-130%


Leach_Method_Qual:
B1 = Analyte detected in associated method blank


Leach_Method_Qual:
Detected in laboratory blank at 0.86 ug/L


Leach_Method_Qual:
Results not received from lab before deadline.


Leach_Method_Qual:
Detected in laboratory blank at 0.23 ug/L


Leach_Method_Qual:
Detected in the laboratory blank at 0.21 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 85.2 ug/L


Leach_Method_Qual:
M = MS,MSD, and/or RPD outside of acceptance limits due to interference


Leach_Method_Qual:
Samples collected on 7/21/10 see attached laboratory sample results and QA/QC


Leach_Method_Qual:
Hold time and/or preservation requirements not met. Result is estimate.


Leach_Method_Qual:
Detected in the laboratory blank at 194 ug/L


Leach_Method_Qual:
Method blank contamination. The associated method blank contains the target analyte at a reportable level. Elevated Reporting Limit. The reporting limit is elevated due to matrix interference.


Leach_Method_Qual:
holding time and/or preservation requirements not met, result estimated


Leach_Method_Qual:
H = Sample analysis performed past method-specified holding time


Leach_Method_Qual:
MS and MSD recovery was low 66%.  Lab range is 70-130 %


Leach_Method_Qual:
Detected in laboratory blank at 5.2 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 0.00015 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 1.2 ug/L


Leach_Method_Qual:
Analyte was detected in the associated Method Blank.


Leach_Method_Qual:
Detected in laboratory blank at 19.9 ug/L


Leach_Method_Qual:
Detected in the field blank at less than 5 times the sample result


Leach_Method_Qual:
See Comments for explanation of qualifiers: N, B


Leach_Method_Qual:
MS and MSD revovery was low 66%.  Lab range is 70-130 %


Leach_Method_Qual:
Bottle blank showed measurable quantity of zinc.  Result should be considered an estimate.


Leach_Method_Qual:
Detected in laboratory blank at 2.7 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 328 ug/L


Leach_Method_Qual:
See Comments for explanation of qualifiers: N


Leach_Method_Qual:
Detected in laboratory blank at 347 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 0.68 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 110 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 200 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 92.6 ug/L


Leach_Method_Qual:
Detected in laboratory blank at 440 ug/L


Leach_Method_Qual:
B8 = Analyte detected in associated Method Blank within 10% of RL


# Leach_Smpl_Info

Leach_Smpl_Pt_Desc:
Constructed Wetlands final pond CYRP (DSN006)


Leach_Smpl_Pt_Desc:
untreated sample taken at inlet pipe, treated sample taken at outfall 019


Leach_Smpl_Pt_Desc:
LM13 - Influent to treatment wetlands - See comment


Leach_Smpl_Pt_Desc:
LM01, LM03, LM05, LM07, LM10 - Influent to CCB Sed. Pond


Leach_Smpl_Pt_Desc:
Outfall 008 combined discharge - see comment


Leach_Smpl_Pt_Desc:
Untreated leachate from  collection point DP1WD Phase I (See Map 4 )


Leach_Smpl_Pt_Desc:
Untreated leachate from  collection point DP2WD Phase II (See Map 4)


Leach_Smpl_Pt_Desc:
Treated leachate from Outfall 007 (See Map 4)


Leach_Smpl_Pt_Desc:
Site "J" (Untreated Leachate influent from landfill)


Leach_Smpl_Pt_Desc:
Site J (Untreated Leachate influent from landfill)


Leach_Smpl_Pt_Desc:
Leachate collection piping northeast corner of Area 1


Leach_Smpl_Pt_Desc:
Effluent from SPD-4 (Outfall 0IN00101002)


Leach_Smpl_Pt_Desc:
Effluent from SPD-5 (Outfall 0IN00101001)


Leach_Smpl_Pt_Desc:
LM-1 (Prior to mixing with SPD-3 outfall (006))


Leach_Smpl_Date:
7/30/2010 all except mercury - (resampled for Hg on 8/30/2010


Leach_Smpl_Pt_Desc:
Under drain and top drain leachate flows (untreated) are collected in a common header area located in a concrete vault between the two of the landfill and first sediment pond. Combined leachate (under drain and top drain) flow (untreated) is collected between the leachate collected pond and the second sediment pond. The combined leachate then flows to the leachate collection pond.


Leach_Smpl_Pt_Desc:
SPD-7 Discharge, SPD8 Discharge
SPD-9 Discharge


Leach_Smpl_Pt_Desc:
Location #3: Unit 5 Flyash pond and road underdrain; Location #4: Unit 5 Flyash pond conveyor foundation drains; and Location #5: Unit 5 Flyash Pond SE corner.


Leach_Smpl_Pt_Desc:
Location #1: Bottom ash pond blanket drain at coal yard sump; Location #2: Bottom ash pond west underdrain


Leach_Smpl_Pt_Desc:
Constructed Wetlands discharge LSRP (DSN005)


# Leach_Waste_Info

Leach_Other2_Desc:
CCB Site Sedimentation Pond Sediment (dredgings)


Leach_Other1_Desc:
Construction & Demolition Debris - consisting of broken concrete


Leach_Other1_Desc:
SPD-1 and SPD-2 Wastewater Treatment Sludge


Leach_Other1_Desc:
Bottom ash residues from dewatering bins


Leach_Other1_Desc:
Incidental wste contained in supernatant from SPD-1 and SPD-2.


Leach_Other1_Desc:
Incidental wste contained in supernatant from SPD-4.


Leach_Other1_Desc:
Incidental wste contained in supernatant from SPD-6.


Leach_Other1_Desc:
3,470 cy was dredged from pond and placed into LF-1


Leach_Other1_Desc:
167,396 cy was dredged from pond and beneficially re-used on-site.


Leach_Other1_Desc:
3,470 cy of dredged sediments from SPD-1


# LTS_Lim_Chgs

LTS_Imp_Lim_Chgs_desc:
Total Recoverable Manganese limit of 50 ppb.


# LTS_Treat_Units

LTU_ID:
Chemical Precipitation Reaction Tank 1 - 1


LTS_LTU_Plant_Des:
Disposal site sedimentation pond (SPD-3)


LTS_LTU_Plant_Des:
Rieker Hill Rd. Landfill Leachate Pond 1


LTS_LTU_Plant_Des:
Rieker Hill Rd. Landfill Leachate Pond 2


# LTU_Design

LTU_ID:
Chemical Precipitation Reaction Tank 1 - 1


LTU_Mtrl_Other_desc:
Constructed wetland cells CWL-1 through CWL-7B have a geosynthetic clay liner consisting of a prepared subbase, bentonite mat liner.  Soil/compost were used in the construction of these wetland cells.


LTU_Mtrl_Other_desc:
Constructed wetland cells CWL-1 through CWL-7B have a geosynthetic clay liner consisting of a prepared subbase, bentonite mat liner. Compost/aggregate were used in the construction of these wetland cells.


LTU_Mtrl_Other_desc:
Constructed wetland cells CWL-1 through CWL-7B have a geosynthetic clay liner consisting of a prepared subbase, bentonite mat liner. Soil/compost were used in the construction of these wetland cells.


LTU_Mtrl_Other_desc:
Constructed wetland cells CWL-1 through CWL-7B have a geosynthetic clay liner consisting of a prepared subbase, bentonite mat liner. Aggregate was used in the construction of these wetland cells.


# LTU_Plant_Species

LTU_Plant_Purp:
The purpose of the different plants helps to facilitate removal of a wide variety of metals and other parameters.


LTU_Plant_Purp:
beneficial microbes that promote Fe and Mn


LTU_Plant_Purp:
oxidation.  Dead material facilitates sulfate


LTU_Plant_Purp:
promotes alkalinity.  Dead matter also helps


LTU_Plant_Purp:
metals sink.  Plants engate in minor uptake


LTU_Plant_Purp:
of metals and nutrients.  Provide shoreline


LTU_Plant_Purp:
oxidation.  Dead matter promotes sulfate reduction


LTU_Plant_Purp:
that promotes metals removal and increase


LTU_Plant_Purp:
alkalinity.  Dead matter also helps metals


LTU_Plant_Purp:
sink.  Plants provide shoreline stability and


LTU_Plant_Purp:
Roots and stems provide surfaces for bene


LTU_Plant_Purp:
ficial microbes that promote Fe and Mn ox.


LTU_Plant_Purp:
Dead matter facilitates sulfate reduction


LTU_Plant_Purp:
alkalinity.  Dead material also helps metals


LTU_Plant_Purp:
Minor uptake of metals and nutrients; pro-


# LTU_Trgtd_Pollutants

LTU_ID:
Chemical Precipitation Reaction Tank 1 - 1


# MCW_Chem

seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


MCW_Chem_1_other:
Detergents and surfactants suspended in water


MCW_Chem_1_other:
Ethylene Glycol Monobutyl Ether, Ethoxylated Alcohols, Water


Operation:
High Temperature Chemical Clean (HTCC) of Steam Generators for iron removal


MCW_Chem_1_other:
Ethoxylated Alcohols, Ethylene Glycol Monobutyl Ether


MCW_Chem_1_other:
P/N 4078 Concentrate R-MC Engine Cleaner


MCW_Chem_1_other:
Industrial cleaner (surfactants and hydrocarbons)


MCW_Chem_1_other:
Diethylene Glycol Monobutyl Ether, Ethoxylated Alcohols


Operation:
Steam Generator Advance Scale Conditioning Agent Application


MCW_Chem_1_other:
Conntect 5000:Diethylene Glycol Monobutyl Ether, Ethoxylated Alcohols, Water


MCW_Chem_4_other:
68855-44-7, 9-Octadecenoic acid (Z)-, reaction products with diethanolamine


MCW_Chem_1_other:
Ferroquest LP7200 (Adipic acid solution)


# MCW_No_Chem

Operation:
Sludge Lancing with or without upper bundle flushes


Operation:
Service Water Heat Exchanger and System Pipe Cleaning


Operation:
Sludge Lancing with or without upper bundle flushing


H2O__NoChem_1_other:
Shotguns, explosives or abrasive sand blasting used. Grit blasting and spot blasting used.


H2O__NoChem_1_other:
Shotguns, explosives or abrasive sand blasting used


H2O__NoChem_1_other:
Pulled from Recirculating Cooling Tower Water


H2O__NoChem_1_other:
Residues captured internally by other systems


# MCW_Slds_Res_Gen

MCW_Handling_Other_desc:
The precipitated sludge at the bottom of the Impoundments is removed annually through a filter press with the filter cake transported to a Class I Landfill as Hazardous Waste due to metals.  The tons per cleaning event is an estimate as all waste streams are combined and then removed annualy as one.

MCW_Combined_Other_desc:
Units 6&7 Air Pre Heater, Stack and Boiler wash water and Unit 2 HRSG Washes.


MCW_Combined_Other_desc:
Coal pile run off discharges to ash pond


MCW_Combined_Other_desc:
Solid by-products settle within the chemical cleaning pond.


seunit_id:
SE Unit-1, SE Unit-2, SE Unit-3, SE Unit-4


MCW_Characteristics:
pH, Metal content of the waste, constituents used to clean the boiler.


MCW_Handling_Other_desc:
Sent to coal pile runoff pond where it is dredged and sent to coal pile for consumption


MCW_Combined_Other_desc:
when sent to pond, all wastewater and solids are mixed together.


MCW_Combined_Other_desc:
Solids from Reverse Osmosis System pretreatment.


MCW_Characteristics:
Sometimes the analyses results indicated NI and ZN exceeded the California Cam 17 Metals, but not RCRA metals.  In 2009 all six washes were non-hazardous.

MCW_Combined_Other_desc:
Units 6 Air Pre Heater, Stack and Boiler wash water and Units 1&2 HRSG Washes.


MCW_Handling_Other_desc:
Liquid residue hauled off-site for incineration or stabilization and disposal


MCW_Handling_Other_desc:
Incidentally comingled with bottom and/or flyash.


MCW_Combined_Other_desc:
the coal pile run off pond discharges to the ash pond


MCW_Handling_Other_desc:
Incidentally commingled with fly and/or bottom ash in SPD-1.


MCW_Handling_Other_desc:
Incidentally commingled with fly and/or bottom ash during evaporation in the boiler.


MCW_Combined_Other_desc:
previous chemical cleanings on turbines and boilers


MCW_Combined_Other_desc:
Boiler slag and other materials identified for disposal in Landfill-1


MCW_Handling_Other_desc:
Collected in tanks and transported to Landfill-1 for disposal.


MCW_Combined_Other_desc:
Boiler Blowdowns and quench water, Greensand filter backwashes, Plant sanitary system effluent.


MCW_Handling_Other_desc:
Any solids would be incidentally comingled with flyash and/or bottom ash when evaporated in the boiler.


MCW_Handling_Other_desc:
Minimal constituent of bottom ash (when a air heater wash operation occurs) that is marketed.


MCW_Handling_Other_desc:
Stored temporarily in pond, later landfilled


MCW_Combined_Other_desc:
coal pile run off pond discharges to the ash pond


MCW_Handling_Other_desc:
Stored temporarily in treated metals cleaning pond (later evaporated in boiler)

MCW_Combined_Other_desc:
waste from previous chemical cleanings only


MCW_Combined_Other_desc:
Sediments from various other plant waste streams


MCW_Handling_Other_desc:
U.S.Filter Recovery Services hauled liquid off site for processing.


MCW_Handling_Other_desc:
U.S.Filter recovery services hauled liquid off site for processing


MCW_Handling_Other_desc:
Hauled off site and disposed of at a landfill


MCW_Characteristics:
Non-RCRA Hazardous Waste.  CA Code 491 - Unspecified Sludge Waste


MCW_Handling_Other_desc:
Stored in ash settling basin temporarily


MCW_Handling_Other_desc:
Wastes would remain in pond until such time as pond needs to be relined or cleaned.

MCW_Combined_Other_desc:
RO cleaning waste & Cooling Tower Cleaning Wastes


MCW_Handling_Other_desc:
Containerize waste; send to offsite landfill.


seunit_id:
3, 4, 5 and FSV Units 5 & 6 (FSV Units 2,3,4,5&6)


MCW_Handling_Other_desc:
Collected in tanks and transported to Landfill-1 for disposal


Operation_ID:
Steam Generator Advance Scale Conditioning Agent Application


Operation_ID:
Unit 2 Generator Stator Cooling System Chemical Cleaning


Operation_ID:
High Temperature Chemical Clean (HTCC) of Steam Generators for iron removal


Operation_ID:
Sludge Lancing with or without upper bundle flushes


Operation_ID:
Sludge Lancing with or without upper bundle flushing


MCW_Combined_Other_desc:
Units 7 Air Pre Heater, Stack and Boiler wash water and Units 1&2 HRSG Washes.


MCW_Handling_Other_desc:
Residues captured internally by other systems


# MCW_WW_Treatment

Clean_desc:
Tubes from small heat exchangers such as lube oil coolers and hydrogen coolers are cleaned of sand accumulation and/or salts build-up.  These coolers are cleaned by hydroblasting with water supplied by wells.  No chemicals are added.  Frequency of cleaning is approximately once per year.  This small volume wastewater is routed to an on-site permitted evaporation pond.

MCW_Dest_Other_desc:
routed to permitted evaporation pond for subsequent use in spray irrigation


Clean_desc:
Tubes from small heat exchangers, such as lube oil coolers and hydrogen coolers are cleaned of sand accumulation and/or salts build-up.  These coolers are cleaned by hydroblasting with water supplied by wells.  No chemicals are added.  Frequency of cleaning is approximately once per year.  This small volume wastewater is routed to an on-site permitted evaporation pond


Clean_desc:
Tubes from small heat exchangers, such as lube oil coolers and hydrogen coolers are cleaned of sand accumulation and/or salts build-up.  These coolers are cleaned by hydroblasting with water supplied by wells.  No chemicals are added.  Frequency of cleaning is approximately once per year.  This small volume wastewater is routed to an on-site permitted evaporation pond.


Clean_desc:
The process is a multi-stage chemical cleaning designed to remove iron, copper, and silica based deposits from the steel boiler tubes.

The proposed chemical cleaning process consists of 5 separate steps. 
1. Ammoniated sodium bromate for copper removal.
2. Inhibited Hydrochloric acid step containing ammonium bifluoride for both iron and silica removal.
3. Ammoniated sodium bromate step again designed for copper removal.
4. Inhibited Hydrochloric acid stage containing ammonium bifluoride and thiourea for iron, copper, and silica removal.
5. Neutralization and passivation with a solution of soda ash and triethanolamine.

The proposed method of heating includes heat-setting of the boiler using water and steam from a blend-fill manifold, all heating will be accomplished by means of steam addition through the blend-fill manifold.

MCW_Dest_Other_desc:
Cleaning waste is first collected in frac tanks onsite, then analyzed.  Wastewater with low copper concentration is sent to the pond, high copper wastewater is taken offsite for treatment.  High copper wastewater was not hazardous due to pH, it is sent offsite to remove copper and then discharged via the treatment facility's wastewater outfall.


Clean_desc:
Depending upon the tube analysis, the cleaning could be either one or two stage cleaning.  The plant uses tetra ammonium EDTA and an inhibitor to remove iron and surface copper.  If there is a lot of copper then a separate copper stage is used to remove copper.  This process uses ammonium bicarbonate, ammonium hydroxide and oxygen to remove copper.  The final stage of the process uses the iron rich EDTA and ammonium hydroxide to raise pH to 9.2-9.5, to remove any left over copper and to passivate tube surface.

MCW_Dest_Other_desc:
All waste is put into frac tanks and treated.  Water is discharged to a POTW or put into sumps and treated.  Water is discharge with cooling water discharge.


Clean_desc:
The plant uses potable water to wash down the fireside of the boiler tubes once per year.  Wastewater is collected in a sump where it under goes chemical precipitation and pH adjustment.


Clean_desc:
The plant uses portable city water for cleaning air heater screens.  This process does not use chemicals or cleaning agents. A fire hose with high pressure nozzle attached to city water is sprayed across screens for removing dirt and rusty particles.  Straw is place in work zone with absorbent sock tubes surrounding area.  Waste water evaporates and straw is accepted by city landfill for deposal.


Clean_desc:
The plant contacts services for boiler tube cleaning. The cleaning method is based on sufficient quantities of chemicals for a two stage cleaning. First stage will be sodium bromated for copper removal followed up with a second stage of hydrochloric acid with thiourea and nitrogen rinse. Typically four (4) waste containment tanks with secondary containment berms for temporary storage. The totals for copper and iron, RCRA 8 metals are analyzed, tested and PH adjusted for transport to disposal facility.


Clean_desc:
The plant performes an on-line water wash for the gas turbine compressor blades annually before our boroscope inspection.The 5.5%soap to water mixture is directly injected into the compressor during full running operation.

MCW_Dest_Other_desc:
The solution is consumed in the combustion process of the turbine


Clean_desc:
The plant uses citiric acid to remove iron oxides from internal steel tube surfaces of the boiler. The citric acid is diluted to a pH of 4.0 and then used for cleaning in a two-stage process. In the first stage, the citric acid dissolves iron oxides. In the second stage anhydrous ammonia is added to raise the pH of the cleaning solution to 9.5, sodium nitrite is added and air is bubbled through the solution for passivation if internal tube surfaces.

MCW_Dest_Other_desc:
Commingled with CTBD and disposed of on land application system and/or injection well.


Clean_desc:
The plant conducted a pre-operational chemical cleaning prior to placing the combined cycle unit into service for degreasing and to remove loose dirt and mill scale.  The cleaning consisted of a high pH degreasing step using caustic followed by the addition of citric acid to a pH of 3.5 for mill scale removal.  Solution pH was raised to 9 with ammonia and sodium nitrite added to passivate the surfaces.   For future cleanings, a similar chelant solution (but without caustic) would be used to remove iron scale on tube surfaces.

MCW_Dest_Other_desc:
Transferred to off-site treatment system.


Clean_desc:
High pressure water was sprayed on the fire side of the tubes to remove deposits during commissioning activities.


Clean_desc:
The plant mixes 17 gallons of Zok 27 with demineralized city water and sprays it on the compressor blades to remove deposits which originate in the air.  The Zok 27 is left on the compressor blades for a 30 minute soak.  Multiple rinses are completed to remove the Zok 27.


Clean_desc:
The plant contracts out the cleaning services and uses a 2-stage EDTA cleaning process to remove both iron oxides and copper-based deposits from the waterside of the boiler tubes.  The first stage (iron stage) involves filling the boiler with a uniformly mixed solution of A300 corrosion inhibitor and diammoniated EDTA.  Boiler temperatures are maintained around 180 degrees F and the cleaning solution is recirculated.  The second stage (copper stage), the temperature is dropped to about 150 degrees F and aqua ammonia is added to the cleaning solution to raise the pH from about 5.0 to 9.4. In addition, gaseous oxygen is injected to provide an indirect oxidant for Cu removal as ferrous ions are oxidized to ferric ions, which in turn oxidize  and remove plated Cu.  Once Cu concentrations stabilize, the cleaning solvent is drained for treatment prior to discharge and the boiler is rinsed twice by circulating distilled water.


Clean_desc:
The compressor section of the combustion turbine is washed using demineralized water at a rate of 12 gallons per minute for five minutes while the combustion turbine is operating. All demineralized water is vaporized in the combustion turbine.


Clean_desc:
Plant uses Zok 27 cleaning soap to wash the unit.  Zok 27 is mixed at a ratio of 4 gallons soap to 160 gallons demineralizer water prior to introduction into combustion turbine compressor.  The CT is rinsed with 320 gallons of demineralized water.  All wash and rinse water is directed to an oil/water separator which discharges to a neturalization tank for pH adjustment if needed prior to discharge to Outfall 001.

MCW_Cmgld_Other_desc:
Plant floor drains, demineralization reject water.


Clean_desc:
The plant uses a commercially puchased biodegradable non-hazardous detergent for cleaning dirt and grime off of GT compressor and turbine metal surfaces. Water and soap is injected automatically at a predetermined solution and then clean water rinsed.

MCW_Dest_Recyc_desc:
Becomes part of the cooling water process


Clean_desc:
A mixture of demineralized water and detergent (Conntect ® 6000) is used to remove dry contaminants (dirt, dust, insects) and hydrocarbon fumes from the compressor portion of the gas turbines.  The pH of demin water is around 7.0 and detergent is mixed as needed (typical amount, approximately 50 gallons).  Wash goes on for about 42 minutes; once applied, turbine is soaked for 20 minutes, and is rinsed in pulses of 60 seconds followed by 3.5 minutes of wait time for a total of about 2.5 hours.  Wash water is drained into an initital holding sump.  From this sump it gets pumped to a main waste sump and from this sump it gets pumped to OUC drain field.


Clean_desc:
The plant uses a 50/50 mixture of detergent and heated deminerialized water solution to wash the compressor section of a combustion turbine, while the unit is offline. The used detergent is collected in a tank for discharge off-site.


Clean_desc:
Deminerialized water is injected into the compressor section of a combustion turbine to remove dirt while the combustion turbine is operating.


Clean_desc:
The plant uses ammoniated EDTA to remove iron oxide deposits from the steel-tube surfaces of the HRSG. The EDTA solution is diluted to a pH of approximately 9.0. Following the cleaning, the clean surfaces are neutralized with an ammonia solution, followed by passivation with sodium nitrite.


Clean_desc:
The plant uses a 4:1 water wash soap to demin water solution to wash the compressor section of the combustion turbine


Clean_desc:
The first stage is ammoniated EDTA for the removal of iron from the boiler tubes.  The boiler is heated and cooled to provide circulation of the fluid in the boiler.  The next step is the use of ammoniated bromine to remove copper deposits from boiler tubes.  This is followed by a second ammoniated EDTA solution treatment.  The boiler tubes are finally passivated with a hydrazine and ammonia solution.

MCW_Dest_Recyc_desc:
The cleaning waste is transported from Lake Creek by tanker truck to Big Brown ash ponds for disposal.


Clean_desc:
The gas turbines can experience a loss of performance during operation as a result of deposits of contaminants on internal components. During the washing operation, water and detergent are delivered through piping to the gas turbine compressor in a ratio of 5:1 demineralized water to detergent. The water wash solution is delivered to the turbine at a specific pressure, temperature, and flow rate to wash the gas turbine compressor. [Response continues in Part E Comments]


Clean_desc:
This was a 3 stage cleaning which involved a degreasing stage(caustic,trisodium phosphate,sodium metasilicate), copper removal stage (ammoniated sodium bromate), and an iron oxide/copper removal 3rd stage using tetra-ammonium EDTA heated to 290-300 F. The passivation process was performed by cooling the boiler down to 140-150F then injecting and circulating a diluted hydrogen peroxide.

MCW_Dest_Other_desc:
The cleaning solution and the first rinse(s) were sent to off-site disposal.  Subsequent rinses that met the Big Brown SES Industrial Solid Waste Permit parameters were transported from Lake Creek by tanker truck to Big Brown SES for use as bottom ash transport water.


Clean_desc:
The plant uses an offline water wash detergent mixed with demineralized water to clean the combustion turbine compressor. This liquid removed mostly dust particles that build up on the compressor blades. This liquid is directed to drains that go an underground storage tank. This tank, when 85% full, is sampled for heavy metals and pumped out by Safety Kleen or similiar environmental company for off-site disposal.


Clean_desc:
A soap/water mixture to remove dust particles from the turbine compressor blades.  Wash water is captured in the turbine and gravity drained into the water wash drains tank.  This solution is then collected for disposal offsite.

MCW_Dest_Other_desc:
The solution is collected and hauled off for disposal by a third party.


Clean_desc:
Treated plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment was washed into the ash waste basins and then to the ash pond.  In 2005 the precipitator and the associated duct work was removed from service.  The ash was vacuumed and washed to the ash settling basin.


Clean_desc:
Treated plant intake water is flushed through the boiler tubes at a high rate to remove boiler salts in the superheater sections.  The water is supplied from the condensate system.  The resulting wash water is transferred to the ash pond.


Clean_desc:
Treated plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the ash settling basin.  The ash is settled out and the ph is adjusted before the waste water goes to the ash pond.


Clean_desc:
High purity steam is blown into various sections of the boiler to mitigate slag formation and prevent ash buildup.  This steam is sprayed directly into the boiler and subsequent ash and steam is carried out of the boiler with the flue gases.  Trace particles that are heavy enough to fall will be collected with in the bottom ash pit and transferred to the ash settling basin. The majority of all soot blowing waste goes out the stack.  The soot blowing system does not generate a liquid waste stream.


Clean_desc:
The firesides are washed down using raw well water and collected for waste water processing.


Clean_desc:
The plant uses Conntec 6000 detergent and demineralized water to remove fouling agents from the surface of the stainless steal combustion turbine compressor.  48 gallons of detergent is injected into the compressor at a ratio of 4 gallons to 1 gallon of detergent.  The compressor is then rinsed with demineralized water to ensure all detergent has been removed.  Approximately 2,500 gallons of wastewater is generated by the water wash process.


Clean_desc:
The plant uses demineralized water to remove fouling agents from the surface of the stainless steel combustion turbine compressor.  All water is evaporated in the process leaving 0 gallons of residual wastewater.


Clean_desc:
The plant uses potable water to wash down the boiler air heater metal surfaces as necessary.  The water is collected on temporary storage tanks to remove the solids.  The solids are then removed and the water is in neutralized with potassium nitrate and pumped to the percolation ponds (either SPD-1 or SPD-2).

MCW_Onsite_TS_Other_desc:
temporary tanks to remove sludge and solids

MCW_Dest_Other_desc:
After treatment, water is sent to OWS, which pumps to the SPD-1 or SPD-2


Clean_desc:
The boiler chemical cleaning serves to remove copper and iron deposits from the boiler metal tube internals.  The plant uses a Hydro Chem Industrial Services Inc. CuSol1 solution to remove the copper (1st stage). This solvent system is very similar to bromate systems except that hydrogen peroxide is used as the oxidizer in place of the bromate.  A 2nd stage cleaning uses ChelClean 675 to remove iron and copper.  When using CC 675, the entire chemical cleaning takes place at a ph of 9.2-9.4


Clean_desc:
Heated high pressure water is manually sprayed onto the economizer tubes to remove any accumulated soot.  The resulting water/soot mixture is treated on site.


Clean_desc:
DI water is sprayed into the compressor part of the combustion turbine each week while turbine is on-line.


Clean_desc:
This cleaning uses di-ammonium EDTA to remove iron.  Once the iron removal stage is competed ammonium hydroxide is injected to convert the di-ammonium EDTA to tetra-ammonium EDTA.  Then O2 is injected to passivate the metal surfaces.  This is followed by 2 - 3 water rinses.

MCW_Dest_Other_desc:
The liquid waste was processed onsite, solids removed and the liquid was sent to a POTW


Clean_desc:
Steam generator tubes are cleaned in two stages.  Stage one uses an ammonia based solvent to remove copper from the tubes.  Stage two uses a solution of tetra-ammoniated salt of ethylenediaminetetraacetic acid (EDTA) to remove iron oxides from the tubes.  The chemicals are heated to the proper temperature before recirculation through the tubes.  The cleaning solvent is circulated until tubes are clean.  The waste product is burned in one of the plant’s operating units.


Clean_desc:
The plant uses citric acid to remove copper deposits and iron oxides from the steel tube surfaces of the HRSG (Heat Recovery Steam Generator).  The citric acid is diluted to a pH of 3.5 and then used for cleaning in a two stage process.  In the first stage, the citric acid dissolves iron oxides.  In the second stage, sodium hydroxide and sodium carbonate is added to raise the pH of the cleaning solution between 9 and 10.  This is followed with a 0.5% Sodium Nitrite solution to achieve proper metal passivation.  The HRSG is then rinsed with DM water  to properly flush any residual chemicals.


Clean_desc:
The combustion turbine combustion section is cleaned with a 1% solution of Conntect 6000 which is blended with potable water.  This solution is injected into the combustion section while the turbine is running at low speed.  The solution is collected at the engine drains.  The water wash waste is taken offsite by TSDF (Treatment Storage and Disposal Facility).

MCW_Dest_Other_desc:
Clean Harbors Environmental Services removes and treats wastewater.


Clean_desc:
In order to remove copper oxide deposits from the steam turbine, a mixture of deionized water, ammonium bicarbonate, aqua ammonia and a foaming agent are mixed and injected into the steam turbine.  During injection hydroen peroxide is also injected.  Following this process, an anti-foaming agent is added.  The mixture is captured in the low pressure section of the turbine and disposed of off-site.


Clean_desc:
Mechanics with hoses wash out the boiler section.  Bottom ash is placed in lined dumpsters and hauled off site.


Clean_desc:
The GE LM6000PC Combustion Turbine (CT) off-line water wash sequence cleans both the compressor and combustor simultaneously (one event). 3 gallons of CONNTECT 6000 (Compound Cleaning Liquid) added to 97 gallons of heated demineralized water is sprayed as a mist into the air inlet of the CT while rotating with the starter motor.  When all of the solution is ingested, the CT is stopped for a 20 minute soak period.  The engine is then rotated by the starter motor and rinsed with 600 gallons of demineralized water to remove any residual cleaning compound. All waste water is collected in a 1030 gallon containment sump.  A vendor transports the waste for processing at an off-site facility.


Clean_desc:
Unit has an attached Once Through Steam Generator (OTSG) made by Innovative Steam Technologies (IST). The tubes of the OTSG are rinsed twice a year using feedwater to remove any sodium deposited during normal operation.  Installed condensate pump takes a suction on the condenser hotwell and the feedwater control valves are manually throttled to fill the OTSG.  The normal source of hotwell makeup (demineralized) water  is used during the process.  Temporary hose is installed from the OSTG steam outlet header and connected to the condenser for recirculation of the water through the OTSG. During the recirculation process the installed mixed resin bed is placed in-service to remove the sodium and other impurities from the water.  The OSTG is flushed until the sodium concentration is less than 2ppb. After the flush is completed the resin beds are sent to an off-site vendor for regeneration.


Clean_desc:
The plant occasionally (every 5 to 7 years) uses chemical cleaning to remove deposits from the internals of the boiler waterwall tubes.  The process consists of two deposit removal stages:  A 30-36 hour iron removal stage done with CC665 at a pH of 5.5-6.5 with the boiler at 200 F.  Boiler is at normal operating level with two boiler circulating pumps providing the necessary circulation.  A copper removal stage done with the mixture from the first stage along with ammonia and gaseous oxygen at a pH of 9-9.5.  This is done at 150F.

MCW_Dest_Other_desc:
Wastewater was hauled offsite as non-hazardous waste.


Clean_desc:
The boiler fireside cleaning is a one step process using the treated plant intake water.  The boiler is pressure washed to clean the residue or filling resulted from using landfill gas as fuel.


Clean_desc:
The plant uses a fire hose to clean ash deposits from the boiler tubes (fireside) once per year during our non-demand time.

MCW_Dest_Other_desc:
To percolation ponds and NPDES permitted outfalls G001, G002, G003


Clean_desc:
Ammoniated citric acid is used to remove iron and copper deposits from boiler internal tube surfaces in a two stage process.  In the first stage  an inhibited 4% ammoniated citric acid solution at pH 3.5-4.0 is used to remove iron deposits.  Nitrogen is bubbled through the solution to mix.  In the second stage, ammonia is added to increase the pH to >9.5 and air is bubbled through the solution to remove copper deposits.  Sodium Nitrite is added to passify the surface.


Clean_desc:
Mechanics use high pressure hoses to wash down inside of boiler.


Clean_desc:
Treated wash is injected via a water lance above and below the air preheater.


Clean_desc:
Deionized water is injected into the compressor section of the combustion turbine to remove dirt while the unit is operating.


Clean_desc:
Align combustion turbine for water wash.  Pre-wash with water, then 8 cycles of wash with detergent, soak  period, rinse cycle, align for drying.

MCW_Cmgld_Other_desc:
boiler blowdown, reverse osmosiso reject, filter backwash


Clean_desc:
boiler tube chemical cleaning consists of 3 stages, Stage 1 is a copper removal stage based on ammoniated sodium bromate;reaction temp @ 150-160F. Stage 2 is an Iron/Copper removal stage based on an inhibited hydrochloric acid mixture containing thiourea and ammonium biflouride. temp is 150-160 F. Acid concentration is at 6%. Draining solution is neutralized with 50% caustic to a pH of 6-9.  Stage  3 is a neutralizing stage containing 1.0% soda ash. Temp is 180-200 F.  This soda ash stage follows a full water flush and a weak citric acid flush after the acid stage.

MCW_Dest_Other_desc:
discharged to an evaporation pond which also receives wastewater from RO/DI regeneration process


Clean_desc:
Boiler tube cleaning using a stage to remove Copper deposits based on ammoniated sodium bromate.  A second stage to remove Iron/Copper based on an inhibited hydrochloric acid mixture containing thiourea and ammonium biflouride.   The last stage is a neutralization and passivation stage using citric acid and soda ash

MCW_Dest_Other_desc:
Discharged to an evaporation pond which also receives wastewater from RO/DI regeneration process


Clean_desc:
Boiler tube cleaning using two stages of an ammoniacal sodium bromate stage to remove copper deposits.   A one stage of inhibited hydrochloric acid mixture to remove iron deposits.  The last stage is the neutralization and passivation stage using a soda ash and sodium nitrite blend.  This cleaning did not use thiourea, instead it uses two stages of a bromate solution.

MCW_Dest_Other_desc:
discharged to an evaporation pond, which also receives wastewater from RO/DI regeneration


Clean_desc:
Water cooled electrical generators may form over time a greasy type of lead-containing material, Lead Carboxylate.  This material is removed by scraping off with a putty knife and/or wash off with an electron solvent-dampened rag.  Wet-wiping with denatured alcohol might be required as a final step.  All rags/wipes and PPE is collected for waste determination and off-site disposal.  If any liquid waste is generated, it will also be characterized for off-site waste disposal


Clean_desc:
Water cooled electrical generators may form, over time, a greasy type of lead-containing material, Lead Carboxylate.  This material is removed by scraping off with a putty knife and/or wash off with an electron solvent-dampened rag.  Wet-wiping with denatured alcohol might be required as a final step.  All rags/wipes and PPE are collected for waste determination and off-site disposal.  If any liquid waste is generated, it will also be characterized for off-site disposal.


Clean_desc:
Water cooled electrical generators may form, over time, a greasy type of lead-containing material, Lead Carboxylate.  This material is removed by scraping off with a putty knife and/or wash off with an electron solvent-dampened rag.  Wet-wiping with denatured alcohol might be required as a final step.  All rags/wipes and PPE are collected for waste determination and off-site disposal.  If any liquid waste is generated, it will also be characterized for off-site waste disposal


Clean_desc:
Water cooled electrical generators may form, over time, a greasy type of lead-containing material, Lead Carboxylate.  This material is removed by scraping off with a putty knife and/or wash off with an electron solvent-dampened rag.  Wet-wiping with denatured alcohol might be required as a final step.  All rags/wipes and PPE are collected for waste determination and off-site disposal.  If any liquid waste is generated, it will also be characterized for off-site disposal


Clean_desc:
The plant does not utilize any additives for the cleaning of the generating units. The Boiler Fireside Cleaning is accomplished by using High-Volume-Low-Pressure procedures.

MCW_Dest_Other_desc:
Transported off site for treatment at an approved TSDF.


Clean_desc:
The plant does not utilize any additives for the cleaning of the generating units. The Air Preheater Basket Cleaning is accomplished by using High-Pressure-Low-Volume procedures.


Clean_desc:
The GE LM6000PC Combustion Turbine (CT) on-line water wash sequence cleans the compressor. 100 gallons of demineralized water is sprayed as a mist into the air inlet of the CT while the engine is running at load. All water is consumed in the CT during the process with no waste generation.


Clean_desc:
Steam Turbine Wash: Unit is shutdown and allowed to cool for 48 hours prior to the water wash.  Steam Turbine is started normally and while at normal operating speed (no load) the steam supply is attemporated below saturation.  The wet steam passes through the turbine and washes the blades and nozzles. The steam is then condensed and passed through the installed mixed resin beds to remove any impurities in the condensate.  No water is discharged during this procedure and the resin beds are regenerated by an off-site vendor.


Clean_desc:
The plant uses EDTA (with inhibitor) to remove iron oxides from the internal boiler surfaces. pH is maintained at approx. 9.9 S.U.'s. After the iron oxides are removed, additional EDTA, antifoam, and sodium nitrite are injected to remove copper deposits. ph is maintained at approx. 9.8-9.9 S.U.'s. Upon completion, wash water is transferred to frac tanks, then shipped off-site to a properly licensed and approved treatment facility.


Clean_desc:
The plant uses EDTA (with inhibitor) to remove iron oxides from the internal boiler surfaces. pH is maintained at approx. 9.4 S.U.'s. After the iron oxides are removed, additional EDTA, antifoam, and sodium nitrite are injected to remove copper deposits. ph is maintained at approx. 9.5 S.U.'s. Upon completion, wash water is transferred to frac tanks, then shipped off-site to a properly licensed and approved treatment facility.


Clean_desc:
The plant contracts out the cleaning services and uses a 2-stage EDTA cleaning process to remove both iron oxides and copper-based deposits from the waterside of the boiler tubes. The first stage (iron stage) involves filling the boiler with a uniformly mixed solution of A300 corrosion inhibitor and diammoniated EDTA. Boiler temperatures are maintained around 180 degrees F and the cleaning solution is recirculated. The second stage (copper stage), the temperature is dropped to about 150 degrees F and aqua ammonia is added to the cleaning solution to raise the pH from about 5.0 to 9.4.  In addition, gaseous oxygen is injected to provide an indirect oxidant for Cu removal as ferrous ions are oxidized to ferric ions, which in turn oxidize and remove plated Cu. Once Cu concentrations stabilize, the cleaning solvent is drained for treatment prior to discharge and the boiler is rinsed twice by circulating distilled water.


Clean_desc:
The plant uses a 50/50 mixture of detergent and heated deminerialized water solution to wash the compressor section of a combustion turbine, while the unit is offline. This process takes4-8 hours.


Clean_desc:
Demineralized water is injected into the compressor section of the combustion turbine while the combustion turbine is operating.


Clean_desc:
The plant uses a 50/50 mixture of detergent and heated deminerialized water solution to wash the compressor section of a combustion turbine, while the unit is offline.


Clean_desc:
Put air preheater on slow drive.  Wash one revolution 15 minutes or until clear.  Introduce soda ash for one more revolution to prevent damage to air preheater baskets.

MCW_Cmgld_Other_desc:
Economizer hopper wash, boiler fireside wash


Clean_desc:
Water cooled electrical generators may form, over time, a greasy type of lead-containing material, Lead Carboxylate.  This material is removed by scraping off with a putty knife and/or wash off with an electron solvent-dampened rag.  Wet-wiping with denatrued alcohol might be required as a final step.  All rags/wipes and PPE are collected for waste determination and off-site disposal.  If any liquid waste is generated, it will also be charcterized for off-site disposal


Clean_desc:
Condensor copper-alloy tubes will accumulate blown-in sand and debris.  A contractor is hired to clean the tubes by hydroblasting.  No chemicals are used. Water supplied by wells is used.  High pressure and high velocity will rid-off the tubes of any sediment.  The watewaste water is routed to a permitted evaporation pond.

MCW_Dest_Other_desc:
routed to a permitted evaporation pond for subsequent use in spray irrigation


Clean_desc:
Condensor copper-alloy tubes will accumulate blown-in sand and debris.  A contractor is hired to clean the tubes by hydroblasting.  No chemicals are used.  Water supplied by wells is used.  High pressure and high velocity will rid-off the tubes of any sediment.  The wastewater is routed to a permitted evaporation pond


Clean_desc:
Maintenance personnel enter boiler through man holes and wash down using hoses.  Bottom ash is collected in drums and dumpsters, then disposed of in a landfill.

MCW_Cmgld_Other_desc:
air preheater washes and economizer hopper washes


Clean_desc:
The plant uses potable water to remove deposits from the fireside of the boiler tubes.  Washwaters flow to the Waste Disposal Pit.


Clean_desc:
The plant uses steam to remove soot buildup from the boiler waterwalls, reheat, and superheat sections.  The steam and removed soot enter the flue gas stream.  Soot is removed in the cyclone separators.

MCW_Dest_Other_desc:
Soot and fly ash removed from the cyclone separators is hauled to an offsite landfill.


Clean_desc:
Fire Hoses alone, using well water, are used to wash down the tube fire side.  The Air Heater and Economizer are done at the same time.  The water and ash fall into trenches under the boiler and is then pumped to the Waste Water Treatment System, specifically designed for this process. Sludge is trucked off site for treatment & disposal, water is discharged under NPDES Permit


Clean_desc:
Fire Hoses alone, using well water are used to wash down the tube fire side.  The Air Heater and Economizer are done at the same time.  The water and ash fall into trenches under the boiler and is then pumped to the Waste Water Treatment System, specifically designed for this process. Sludge is trucked off site for treatment and disposal, water is discharged under NPDES Permit


Clean_desc:
Air Heater baskets are washed with water on an as need basis during a planned outage.


Clean_desc:
Sootblowing of the outside surfaces of the boiler tubes was performed to remove ash, which increased heat transfer and boiler efficiency. Main steam was used for the process. Fuel source was changed in 2003 from coal to natural gas. Sootblowing is no longer performed.


Clean_desc:
Internal rinse of boiler tubes after tube leak repair(s) to remove impurities. Demineralized water is used for the rinse.


Clean_desc:
Steam sootblowers are used to remove ash accumulations at various locations within the boiler furnace.  The ash that is removed will either be swept up from the flue gas and collected in the economizer ash system or the precipitator or will fall to the bottom of the boiler and become part of the bottom ash.  All of the moisture in the steam is evaporated and leaves the boiler in the flue gas.


Clean_desc:
The plant uses a single-stage process to remove copper and iron deposits from the steel tube interior surfaces of the boiler.  It is a two-step ammoniated EDTA process. In the first step, ammoniated EDTA is used to remove iron deposits.  In the second step, oxygen is injected to oxidize the solution to remove copper deposits and to passivate the steel surfaces.


Clean_desc:
Sootblowing uses steam from boilers to remove soot, slag, and flyash from the tube surfaces.  No wastewater is generated. Steam evaporates during cleaning process.


Clean_desc:
The plant used a surfactant to loosen dirt, debris, and other manufacturing/construction material along with EDTA to remove mill scale/surface rust from the steel tube interior surfaces of the boiler.   This was a two-step process with surfactant and di-ammonium EDTA used in the first step to remove dirt, mill scale, etc.  In the second step, aqua ammonia is added to raise the pH to aproximately 9.5 and oxygen is injected to passivate the steel surfaces of the boiler.


Clean_desc:
The plant used a surfactant to loosen dirt, debris, and other manufacturing/construction material along with EDTA to remove mill scale/surface rust from the steel tube interior surfaces of the boiler.   This was a two-step process with surfactant and di-ammonium EDTA used in the first step to remove dirt, mill scale, etc.  In the second step, aqua ammonia is added to raise the pH to approximately 9.5 and sodium nitrite is injected to passivate the steel surfaces of the boiler.


Clean_desc:
The plant used a proprietary process (Cuproplex) by Alstom to remove copper oxide deposits from the generator stator.  This process is performed by Alstom using EDTA, oxidizers, activators, and inhibitors, as needed, in very low concentrations.  All the chemicals along with the dissolved copper oxide are absorbed in the ion exchanger which is part of the stator cooling water system.  The resin is then disposed of as solid waste.

MCW_Dest_Other_desc:
There is no liquid waste generated during this process.


Clean_desc:
The plant used phosphoric acid to remove copper oxide deposits from the generator stator.  The phosphoric acid is added to approximately 10% and circulated to dissolve copper deposits.  The system is then drained and flushed four times before returning to service.


Clean_desc:
Raw plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the precipitator sumps, the low volume sump and then to the ash pond. Metal cleaned is carbon steel.

MCW_Dest_Other_desc:
Some water from the ash pond is recycled back to the plant for ash recycle wash water


Clean_desc:
The plant uses steam for sootblowing of boiler and air preheater surfaces.

MCW_Dest_Other_desc:
The steam is entrained in the gas stream of the boiler.


Clean_desc:
The plant uses high pressure hoses to spray well water to mechanically remove slag deposits from the fireside of steel boiler tubes.


Clean_desc:
This process uses aq NH3, NH4HCO3,and NaBrO3 to remove copper deposits on the internal surfaces of the boiler.  The copper removal stage is followed by a water rinse.  Then tetra-ammonium EDTA to remove iron.  Once the iron removal stage is completed O2 is injected to remove copper and passivate the metal surfaces.  This is followed by 2 - 3 water rinses.


Clean_desc:
The plant uses ZOK27 to remove dirt and hydrocarbons from the combustion turbine compressor blade and vane surfaces.  18 gallons of ZOK27 are mixed with 72 gallons of hot demineralized water.  The compressor wash cycle is started and when the compressor reaches 400 RPM half the solution is pumped in.  The turbine automatically shuts down after 5 minutes.  This is done twice and then the compressor is rinsed with 75 gallons of hot demineralized water.

MCW_Dest_Other_desc:
Approximately 95% evaporates and 5% goes to drain to the evap. ponds


Clean_desc:
The plant uses EDTA solution to remove iron oxides and copper from the steel tube surfaces of the boiler.  The EDTA solution is diluted to a 10% mixture for the two stage process.  In the first stage the EDTA dissolves the iron oxides with an elevated temperature.  In the second stage the solution is cooled and oxygen is added to dissolve copper deposits.


Clean_desc:
Mississippi River water is applied via high pressure hose to the inside boiler walls to remove ash buildup.

MCW_Cmgld_Other_desc:
first co-mingled with coal pile runoff pond then to slag pond


Clean_desc:
Mississippi River water is applied via high pressure hose to the air heater to remove ash buildup.

MCW_Cmgld_Other_desc:
first co-mingled with coal pile runoff pond


Clean_desc:
The plant uses Amonniated EDTA to remove iron at a pH of 11.5 then oxygen is introduced to remove copper from boiler tubes.  The plant uses a foaming solution of aquamonia and oxygen to clean the steam turbine.

Seciton incomplete.  This section was completed for 2 cleaning operations TUBE_CHEM and ST-TURB_CHEM.


Clean_desc:
The plant uses the ammoniated products and sodium bromate to raise the pH of the solution to dissolve the copper oxides.  Once this phase is completed, hydrochloric acid is used to lower the pH and dissolve the iron oxides.  Each process is repeated twice for both copper and iron.  Thiourea is added to complex both oxides and flush from system. Type of Metal Cleaned is Carbon Steel.

MCW_Dest_Other_desc:
Copper cleaning agents are evaporated. Iron cleaning agent are removed off-site to an approved desposal location.


Clean_desc:
During outages high pressure water nozzles water blast heater transfer surfaces and water is collected in plant drains and drains to the SPD-3 (BAP) any solid materials collected are disposed of off site at an approved landfill. Type of Metal cleaned is Cor10 (Low Corrosion Carbon Steel)


Clean_desc:
The plant used citric acid to remove copper and iron oxide deposits from the steel tube surfaces of the boiler.  The citric acid was mixed to a pH of 4.97 and used for cleaning in a two-stage process.  Ammonia hydroxide was used to raise the pH and 1% sodium nitrate and 0.25% ammonium bicarbonate were added to remove copper deposits.


Clean_desc:
The plant uses water that has gone through the plants water treatment system which removes suspended solids. Plant utilizes a high pressure pump system to boost pressure to remove any build up of fly-ash accumulation on the outside of the boiler tubes to allow thickness checking of tubes. The waste water is transported to the ash ponds utilizing the ash sluice system.


Clean_desc:
The plant uses high pressure water from a contractor's pressure washer to clean the air heater tubes. The nozzles are inserted into the tubes washing the internals. This water is collected in a sump and the pH is adjusted as the water is pumped to the ash basins to ensure pH is within permit limits


Clean_desc:
Ammoniated citric acid is used to remove iron and copper deposits from boiler internal tube surfaces in a two stage process.  In the first stage  an inhibited 4% ammoniated citric acid solution at pH 3.5-4.0 is used to remove iron deposits.  Nitrogen is bubbled through the solution to mix.  In the second stage, ammonia is added to increase the pH to >9.5 and air is bubbled through the solution remove to remove copper deposits.  Sodium Nitrite is added to passify the surface.


Clean_desc:
Fire hoses alone are used to wash down the Air Heater  approximately once every ten years


Clean_desc:
The plant uses Zox MX, which does not list ingredient, as an off-line compressor wash cleaning fluid. The wash is intended to clean dirt deposits from the compressor blades to restore efficiency. The majority of the soap and water combination is evaporated during the wash cycle. There is minor leakage from the engine which has been accounted for as the waste stream for this event. Rinse water is clean water and has been listed as a separate stream because it is evaporated either in the CGT or outside of the package.

MCW_Dest_Other_desc:
Oily waste is collected and recycled off site by a third party.


Clean_desc:
On- line compressor washing is performed daily, as allowed by temperature, using demineralized water injected into the inleat airstream of the gas turbine. This wash is intended to clean dirt from the compressor blades and restore turbine efficency.


Clean_desc:
The plant uses a 10% solution of compressor wash product (Conntect 6000 with deminerlized water) to clean the compressor section of the gas turbine.  This is followed with two rinses using demineralized water.


Clean_desc:
The plant uses a 4:1 ratio of Rochem Fyrewash Fi solvent and water.  The solution is heated and then introduced into the gas turbine compressor inlet via staionary nozzles.  The solution flows while the gas turbine is brought to approximately 1000 rpm, thereby distributing the solutions through all compressor stages.  This procedure is designed to remove dirt and other contaminants, which may include some metals, from the surface of the compressor blades.  Once the solution is depleted, the compressor is rinsed with demineralized water.  This is the system installed by the equipment OEM.

MCW_Dest_Other_desc:
Removed from site by a certified HAZMAT contractor.


Clean_desc:
Deionized water is injected into the compressor section of the cumbustion turbine while the unit is operation to remove dirt.


Clean_desc:
Steam is used sootblowers to deslag and clean the exterior surface of the boiler tubes and to deslag and clean the heat transfer surface of the air heaters.


Clean_desc:
The plant uses ammonium bromate to remove copper deposits from the inside of the waterwall tubes.  This is followed by a second stage of inhibited EDTA to remove copper and iron deposits from the inside of the waterwall tubes.  Gaseous oxygen is then added to further aid in copper removal and to pacify the iron surfaces.


Clean_desc:
Well water is used in high pressure water jets to deslag and clean the exterior surface of the boiler tubes.


Clean_desc:
Well water is used in high pressure water jets to deslag and clean the heat transfer surface of the air heaters.


Clean_desc:
The plant uses two stage Chelant process to remove copper deposits and iron oxides from boiler tube surfaces of the boiler.  In the copper solvent stage, aqua ammonia and ammonium bicarbonate are injected in the boiler and oxygen is bubbled through; and copper percentage is monitored.  After desired results, drain boiler.  In the chemical injection and iron oxide removal stage, Chelant, corrosion inhibitor and antifoam agents are injected, recirculated and drained; and iron percentage is monitored.  System is flushed with demineralized water.


Clean_desc:
Boiler fireside cleaning is performed when the need arises to conduct repairs (such as tube welding) on boiler tubes.  Only water is utilized.


Clean_desc:
The plant does not utilize any additives for the cleaning of the generating units. The Forced and Induced Draft Fan Cleaning is accomplished by using High-Pressure-Low-Volume procedures.


Clean_desc:
The plant does not utilize any additives for the cleaning of the generating units. The Flue Gas Recirculation Fan Cleaning is accomplished by using High-Pressure-Low-Volume procedures.


Clean_desc:
The plant does not utilize any additives for the cleaning of the generating units. The Convection Pass Cleaning is accomplished by using High-Pressure-Low-Volume procedures.


Clean_desc:
Ammonium persulfate and aqua ammonia was used to remove copper deposits for the first stage of cleaning. The system was drained, filled with condensate, and heated. Ammoniated EDTA was used to remove iron oxides. The system was drianed and flushed.

MCW_Dest_Other_desc:
Non rinse water cleaning waste was hauled off site by contractor for processing.


Clean_desc:
Ammonium bicarbonate and aqua ammonia was used to remove copper deposits for the first stage of cleaning. The sysytem was drained , filled with condensate, and heated. Ammoniated EDTA was used to remove iron oxides. The system was drained and flushed.

MCW_Dest_Other_desc:
Non rinse water cleaning waste was hauled off site by contractor for processing


Clean_desc:
The compressor end of the combustion turbine is washed with Pentenone 19. The detergent is used in conjunction with demineralized water. The water and detergent are pumped into the compressor section and then allowed to soak for a period of time. The solution is then drained out of the compressor section into the oil/water separator and then into the equipment drain sump. The equipment drain sump then pumps the wastewater into the cooling tower.

MCW_Dest_Other_desc:
Internally discharged. See comments section under Part E.


Clean_desc:
Condensor copper-alloy tubes will accumulate blown-in sand and debris.  A  Contractor is hired to clean the tubes by hydroblasting.  No chemicals are used. Water supplied by wells is used. High pressure and high velocity will rid-off the tubes of any sediment.  The wastewater is routed to a permitted evaporation pond

MCW_Dest_Other_desc:
Routed to a permitted evaporation pond for subsequent use in spray-irrigation


Clean_desc:
Tubes from small heat exchangers, such as lube oil coolers and hydrogen coolers are cleaned of sand accumulation and/or salts build-up.  These coolers are cleaned by hydroblasting with water supplied by wells.  No chemicals are added.  Frequency of cleaning is approximately once per year. This small volume wastewater is routed to an on-site permitted evaporation pond.


Clean_desc:
Tubes from small heat exchangers, such as lube oil coolers, and hydrogen coolers, are cleaned of sand accumulation and/or salts build-up.  These coolers are cleaned by hydroblasting with water supplied by wells.  No chemicals are added.  Frequency of cleaning is approximately once per year.  This small volume wastewater is routed to an on-site permitted evaporation pond


Clean_desc:
The plant uses service water to wash down the fire side of the boiler to remove loose ash.  This is a manual operation using four washdown hoses and simply hosing down the inside surface of the boiler.  The water/ash is then pumped to the bottom ash pond.


Clean_desc:
The plant uses a combination of ash sluice water and service water to remove ash buildup from the air heaters.  This is done in a two-step process.  In the first step, recycled ash sluice water is used to remove the bulk of the ash.  In the second step, cleaner service water is used to remove any remaining ash from the air heater.  All water/ash from this process is routed back to the bottom ash pond

MCW_Dest_Recyc_desc:
Water is pulled from the bottom ash pond using the ash sluice system and recycled back to the pond after it is sprayed in the air heater.


Clean_desc:
Our plant uses tetra-ammoniated EDTA to cheleate magnetite (Iron Oxide) and copper deposits from steel tubes and the drum. The pH is maintained at approximately 9.6 throughout the process. The boiler must be fired in order to activate the cheleating process. EEI fires the boiler at periodic intervals until a prescribed cycle of heating and cooling is completed. Afterward, with the solvent temperature below 150 degrees F, oxygen is bubbled into the solution to dissolve copper deposits. The boiler must then be repeatedly cascaded with water to dislodge left over solids. Waste material is tested for Chrome and Lead and if found to be below limits, the waste is incinerated at a slow rate in an adjoining boiler.


Clean_desc:
Untreated plant intake water is pressurized and used to remove buildup of ash on plates and electrodes on the inside of the precipitators, and occasionaly to remove excessive buildup of ash.  Cold-side precipitators require a water wash for maintenance.

MCW_Cmgld_Other_desc:
Mill reject sluice, boiler blowdown, filter backwash, coal pile runoff, clarifier sludge, reverse osmosis reject wastewater, track hopper sump water, limestone pile runoff, floor drain wastewater, ion exchange wastewater, gypsump pile runoff


Clean_desc:
100 gallons of deionized water is sprayed in compressor section while unit is on line.  No discharge as water is evaporated.


Clean_desc:
During commissioning of the facility, a tube cleaning was conducted using sodium hydroxide and sodium phosphate.   Approximately 35 lbs of each chemical  per 1000 gallons of demineralized flushing water at slightly elevated water temperature (125 F to 200 F) was used to loosen dirt and debris and to suspend organic compounds.  All wastewater was collected and disposal was managed through an offsite vendor.


Clean_desc:
The plant uses raw water to wash deposits from air preheaters during planned outages.

MCW_Dest_Other_desc:
Sent to the ash pond which discharges via Outfall 001.


Clean_desc:
The plant uses ammoniated EDTA to clean the internal surfaces of boiler tubing; A300 inhibitor and an antifoaming agent is included in the cleaning process.  Hydrazine is added as a passivating agent.


Clean_desc:
The plant uses raw water to wash ash and loose slag from the fire side of the boiler, primarily the convection pass, at the start of planned outages.

MCW_Dest_Other_desc:
Sent to ash pond which in turn discharges via Outfall 001.


Clean_desc:
The plant uses high pressure water from a contractor's pressure washer to clean the air heater tubes. The nozzles are inserted into the tubes washing the internals. This water is collected in a sump and the pH is adjusted as the water is pumped to the ash basins to ensure the discharge pH is within permit limits


Clean_desc:
The unit uses high pressure hoses to spray filtered water to remove slag deposits from the external fireside of steel steam generator tubes.

MCW_Cmgld_Other_desc:
Coal pile runoff and Low volume wastewater


Clean_desc:
The plant uses high pressure water washing hoses to spray filtered water to remove flyash and deposit pluggage from the air heater internals. The unit has a total of three air heaters and all three are cleaned during each cleaning event.


Clean_desc:
The plant uses blowers with steam from the high pressure turbine exhaust to mechanically remove excess slag deposits from the fireside of steel steam generator tubes.


Clean_desc:
To perform a condenser cleaning the unit utilized an adipic acid solution with a copper corrosion inhibitor and HEDP to loosen scale from copper condenser tubes.  One half of the condenser was filled with the cleaning solution and circulated for a specified time to loosen the scale from the condenser tubes.  The cleaning solution was then transferred to the other half of the condenser and the cleaning procedure was repeated.  Upon completion of the clean, the solution was drained to temporary storage tanks brought onsite for the clean and then thermally evaporated.


Clean_desc:
Service water is used to clean various FGD equipment, mainly pump parts, grit screens, and atomizers.


Clean_desc:
Potable water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the ash lift station and then to the ash pond.

MCW_Dest_Other_desc:
Some waste water from the ash pond is recycled back to the plant for misc wash water


Clean_desc:
The plant uses an inhibited hydrochloric acid solution for the removal of scale build-up on the cooling water side of the boiler circulating pump coolers.


Clean_desc:
The plant uses an ammoniated EDTA solution to remove copper and iron oxide deposits from the boiler waterwall tubes in a two-stage process.  The first stage is using ammoniated EDTA and A-300 Inhibitor at 200F circulating through the boiler to remove iron oxides.  The second stage uses the same solvent with the addition of ammonia and gaseuos oxygen, dropping the temperature to 160F for copper oxide removal.  Demineralized water is used for the process.  Waste volume consists of one boiler volume of the solvent plus two boiler volumes of rinse water.

MCW_Dest_Other_desc:
Transported off site to proper disposal facility if hazardous.


Clean_desc:
The plant used EDTA ammonium persulfate and aqua ammonia to remove copper deposits and iron oxides from the boiler tube inner surfaces.  The chemicals are added in two stages.


Clean_desc:
Soot blowers use boiler steam to clean tubes and pendants.  The soot blowing cycle is run twice per day.

MCW_Dest_Other_desc:
Steam evaporated in the boiler; soot is collected as fly ash.


Clean_desc:
The water side of the steam condenser tubes are cleaned once per year to remove water scale deposits.  Scraper plugs are propelled through each tube with a water jet gun.


Clean_desc:
The first three chemicals (Sodium bromate, Ammonium bicarbonate & Aqua ammonia-29.4%) were blended into the boiler water wall metal tubes for copper removal and the sodium sulfite was used as a reducing agent as the waste solution was being drained to the waste holding tanks.        The iron/passivation stage was based on using tetra-ammonium. The chemicals we used to do this was: Tetra-ammonium EDTA, Rodine 2002 Inhibitor, Oxygen gas (from liquid) & SAG 10 anti-foam.


Clean_desc:
A one time initial cleaning before first fires was performed as follows: Water was heated to 180 deg F and Chem Con 1170G detergent was added to the circulating water flowing through the 65,000 gallon Heat Recovery Steam Generating (HRSG) system to remove any grime. Rodine 2002 was then added as a corrosion inhibitor. Then citric acid was added followed by aqua ammonia to bring pH to 4.5 in order to to dissolve iron oxides. After a minimum of 8 hours recirculation, temperature was lowered to 150 deg. F and more aqua ammonia was added to bring the pH to 8.0-8.5. Sodium Nitrite was then added and circulated for 2 hours to passivate the tubes. The HRSG system was then slowly drained and completely refilled and circulated with demineralized water and drained to rinse system for a total of two rinses, then the HRSG was placed in layup condition after the second rinse.

MCW_Dest_Other_desc:
Sampled for hazardous constituents and hauled off-site to a permitted non-hazardous disposal facility.


Clean_desc:
Unit on steady load at 300 MW, bias fans, Air preheaheater on slow drive.  Wash using upper headed until discharge effluent is clear (about 30-45 minutes).  Wash using lower headed until discharge effluent is clear (about 30-45 minutes).


Clean_desc:
Align combustion turbine for water wash.  Prre-wash with water, then 8 cycles of wash with detergent, soak  period, rinse cycle, align for drying.


Clean_desc:
Combustion Turbine is offline. Conntect Detergent 6000 is added to a heated mixing tank with water and the resulting solution is sprayed over the compressor blades in an automated system. The compressor blades are then rinsed thoroughly with demineralized water via an automated system. Additional rinses may be initiated to ensure all detergent is removed. Volumes of rinse water vary.


Clean_desc:
Gas Turbine Compresser water washing is performed once per year per unit in order to remove deposited material such as dirt, grease, oil and dust from the rotating and stationary blades. These deposits reduce the efficiency of the compressor which leads to an overall reduction in the gas turbine generating cycle efficiency. The process of compressor water washing cleaning involves use of a General Electric supplied water wash skid with a detedgent tank and associated auxiliaries and controls. Wash detergent is 55gal of ZOK 27 diluted 10:1 with warm water. The wash consists of 5 detergent wash cycles of approximately 110 gal each followed by 5400 gal rinse cycle with deminerlized water. All water, rinse water, and detergent are collected in onsite storage tanks, pumped out and disposed off-site.


Clean_desc:
Facility uses potable water to wash down the air heaters once per year.  Wastewater is collected in a sump where it under goes chemical precipitation and pH adjustment.


Clean_desc:
The plant uses a firehose to clean ash deposits from air heaters once per year after the summer peak demand season.


Clean_desc:
Soot blowers are operated weekly using process steam, which then is vaporized and exits out of the stack.

MCW_Dest_Other_desc:
There is no residual waste from the sootblowing operation.


Clean_desc:
The combustion turbine units perform a twice yearly cleaning of the combustion compartment using deionized water.  This waste is then drained to the false start drain tanks and is sent off-site for disposal.  Since these are not steam plants, no other data regarding the combustion turbines has been included with this survey.

MCW_Dest_Other_desc:
Removed with other oil contaminated waste by contract waste management company.


Clean_desc:
The plant uses a fire hose to clean ash deposits from the boiler tubes (fireside) once per year during our non-demand time.  During this operation, the economizer on SE Unit-3 is also washed.  SE Unit-3 is the only boiler that has an economizer as part of it's steam cycle.


Clean_desc:
The plant uses citric acid to remove copper deposits and iron oxides from the steel tube surfaces of the boiler.  The citric acid is diluted to a pH of 3.5 and then used for cleaning in a two stage process.  In the first stage, the citric acid dissolves iron oxides.  In the second stage anhydrous ammonia is added to raise the pH of the cleaning solution between 9 and 10 and air is bubbled through the aolution to dissolve copper deposits.


Clean_desc:
Heated High Pressure water is used to remove combustion residue from the outer diameter of the boiler tubes.  The resulting water/ soot mixture is treated on site.


Clean_desc:
Heated high pressure water is sprayed onto rotating Lungstrom air heaters to remove accumulated soot.  The resultant mixture of water and soot are treated on site.


Clean_desc:
Heated high pressure water is manually sprayed on the ESP elements to remove any residual soot.  The resulting  water/soot mixture is treated on site.


Clean_desc:
Plant used the compressor turbine water wash skid with a soapy surfactant(ZOK 27).  Evaporation used for drying.


Clean_desc:
The plant uses potable water to wash down the economizer metal surfaces as necessary.  The water is collected on temporary storage tanks to remove the solids.  The solids are then removed and the water is in neutralized with potassium nitrate and pumped to the percolation ponds (either SPD-1 or SPD-2).

MCW_Onsite_TS_Other_desc:
temporary tanks for solids/sludge removal


Clean_desc:
Use demineralized water and non-hazardous soap to clean compressor of combustion turbine


Clean_desc:
Rinse compressor portion of combustion turbine with demineralized water


Clean_desc:
Air preheaters are placed on slow speed and washed with city water.


Clean_desc:
20 gallons of detergent Conntect 6000 is mixed with about 1000 gallons of water, heated and allowed to soak to clean dirt from compressor section.


Clean_desc:
Deionized water is injected into the compressor section while the turbine is operating to remove dirt.


Clean_desc:
The plant used a two stage process for removal of iron oxide and copper.  The first stage of the cleaning process used heated diammoniated EDTA solution to remove iron oxide and gross copper.  The second stage, or copper stage, consisted of pH adjustment, addition of sodium nitrite, and direct injection of hydrogen peroxide.  Once the second stage is complete, the chemistry is drained from the boiler to temporary storage tanks for waste charaterization and offsite disposal.


Clean_desc:
Air preheaters are cleaned during the soot blowing process witch takes place routinely during portions of the year where oil burning occurs.  Wastes (soot/ash) from air preheaters is carried in the flue gas to the ESP for collection.

MCW_Dest_Other_desc:
Collected in ESP hoppers for offsite disposal in RCRA landfill.


Clean_desc:
Soot blowing  process  takes place routinely during portions of the year where oil burning occurs.  Wastes (soot/ash) from soot blowing is carried in the flue gas to the ESP for collection.

MCW_Dest_Other_desc:
Ash is collected in ESP ash hoppers for later disposal off-site.


Clean_desc:
The plant uses ZOK 27 to perform offline water washes of the compressor section of the gas turbine.  The detergent is diluted with demineralized water and sprayed into the compressor section.  The waste water is collected into the plants onsite oily water seperator, then discharged to the municipal wastewater system.


Clean_desc:
The Plant uses Conntect 6000, a gas turbine compressor cleaner with detergents and surfactants suspended in water,  to clean the two Unit 1 gas turbine compressors and combustion chambers.  This process occurs approximately 8 times a years taking approximately 10 hours for each cleaning.  Approximately 2500 gallons of waste cleaning solution is generated from each cleaning and is trucked to the local POTW as Non-Hazardous waste.


Clean_desc:
The Tracy plant uses a inhibited hydochloric acid solution to clean scale from the boiler tubes of unit 3. The boiler is mostly filled with a inhibited (0.2% by weight Rodine 214) and 5% hydrochloric acid solution and allowed to soak for 6-8 hours. The unit is then drained and the waste acid solution is containerized and profiled for disposal as a RCRA Hazardous waste.  The unit is then neutrilized using a 0.5% solution of soda ash and water.  After 4 hours the unit is drained. This waste steam is forwarded to the waste water treatment system.  The final step is a 1 hour rinse with demineralized water and a 0.5% sodium nitrate solution and drained to the waste water treatment system.


Clean_desc:
Boiler tube cleaning is performed approximately 1/10 years and uses a chemical cleaning process.  The chemical cleaning typically consists of a degreasing stage with an alkaline detergent solvent to remove oil, grease, and general debris removal.  The cleaning is then followed by a mill scale removal stage with an inhibited monoammonium citric acid formulation for the removal of iron and an ammonia sodium nitrite solution for copper removal/neutralization/passivation stage.  This chemical cleaning process varies depending on condition of the boiler tubes.  Approximately 15-30 tons of solid residue are generated during this cleaning.


Clean_desc:
Boiler fireside cleaning is performed approximately once every three years.  Water is used for this cleaning.  Approximately 15-30 tons of solid residue are typically generated during this cleaning.


MCW_Dest_Other_desc:
Transferred to a pond for settling then discharged via Outfall 001.


Clean_desc:
An ammoniated solvent is foamed, heated and pumped through the HP turbine to remove copper deposits.  The HP turbine is then rinsed with steam until conductivity is < 100 micro mhos.  The steel surfaces of the turbine are cleaned.

MCW_Dest_Other_desc:
Mixed with fly ash and landfilled on site.


Clean_desc:
High pressure fire water (high quality pond water) is used for water washing ash deposits from boiler fireside. The outside surfaces of steel boiler tubes are cleaned.

MCW_Dest_Recyc_desc:
The water is recycled as scrubber make-up water.


Clean_desc:
Fire water (high quality holding pond water) is boosted further in pressure and used to waterblast ash deposits from the air heater baskets.  Approximately 7000 psi water is used at a flow rate of 350 GPM for 36-72 hours depending on deposit thickness. The steel surfaces of heat heater baskets are cleaned.


Clean_desc:
Fire water (high quality holding pond water) is boosted further in pressure and used to waterblast ash deposits from the air heater baskets.  Approximately 7000 psi water is used at a flow rate of 350 GPM for 36-72 hours depending on deposit thickness.


Clean_desc:
The plant uses high pressure steam through steel lances to blast away ash deposits from the boiler tubes while the plant is in operation.  Up to 50,000 lb/hr of steam is used to keep the tubes clean and prevent them from overheating and maintain heat transfer efficiency. The outside surfaces of steel boiler tubes are cleaned.

MCW_Dest_Other_desc:
The steam is incorporated in the flue gas and the solids are removed and landfilled with the bottom ash.


Clean_desc:
We use a off line water wash procedure to clean the gt. The wash solution is mixed in a water wash cart with 4 gallons of the Connect 6000 solution to 40 gallons of RO water. Solution is sprayed into the gt inlet with the gt on a high speed crank. It is left to soak for about 30 minutes then it is rinsed with clean RO water the waste from the wash and rinse goes to the gt package basin and is collected then sent to the sewer from the in plant trench.


Clean_desc:
With the gas turbine online, a mixture of 6 gals. Rochem Fyrewash F3 and 24 gals. Of demineralized water is injected through nozzles into the GT compressor. Then 30 gals. Of demineralized water is injected to rinse clean the soapy water. (Std. procedure for temps. > 50 degrees F.)


Clean_desc:
Chem cleaning was performed to remove boiler tube deposits and resolve boiler water chemistry controls.  Stage 1 uses HCL acid plus a copper complex solvent.  Stage 2 neutralizes the chemicals and does a passivation boilout with soda ash.  Wastes are collected, neutralized, and shipped off-site.


Clean_desc:
Soot blowing is done to Unit 9 boiler (which normally operates less than 24 hrs daily).  When the boiler is operating on fuel oil (not natural gas), prior to securing the boiler, the steam soot blowers are operated, cleaning the outside the boiler tubes (fireside).  The steam cleans the outside of the tubes and all the exhaust is discharged through the Unit 9 stack (no water waste).


Clean_desc:
To clean the CT compressor, we mix 45 gal of hot (demineralized) water plus 1 gal of cleaner (B&B 3100).  The CT is not fired up, but is rotated at minimum speed, and then the 55 gal total of diluted cleaner is pumped into the compressor section.  It is discharged through a drain to a specific drain tank.  Two more rinse cycles using heated water are done, draining to the same tank.  An outside vendor comes to site and vacuums out the tank for transportation and offsite disposal.


Clean_desc:
An outside contractor is contracted to clean and dispose related waste fluid.  The contractor arrives on site and using city water, preheats the water then pressure washes the air preheater.  The waste fluid is drained, collected (in drums) and pumped out to a truck for offsite disposal.


Clean_desc:
Soot blowing is done to Unit 8 boiler (which normally operates less than 24 hrs daily).  Prior to securing the boiler, the steam soot blowers are operated, cleaning the outside the boiler tubes (fireside).  The steam cleans the outside of the tubes and all the exhaust is discharged through the Unit 8 stack (no water waste).


Clean_desc:
The plant uses a commercially puchased (ZOK 27) biodegradable non-hazardous detergent for cleaning dirt and grime off of GT compressor and turbine metal surfaces. Water and soap is injected automatically at a predetermined solution and then clean water rinsed.

MCW_Dest_Other_desc:
Wash water is contained in GT and removed off site for treatment.


Clean_desc:
During commissioning of the facility, a tube cleaning was conducted using sodium hydroxide and tri-sodium phosphate.   Approximately 35 lbs of each chemical  per 1000 gallons of demineralized flushing water at slightly elevated water temperature (125 F to 200 F) was used to loosen dirt and debris and to suspend organic compounds.  The flush water was sent  to an on-site treatment system for ph adjustment and discharge to an adjacent POTW.


Clean_desc:
The frequency of compressor washes is based on the number of operating hours on the CT and is typically conducted semi-annually.  Compressor washes are conducted using a commercially available detergent (Conntect 6000).  Conntect 6000 is diluted on a ratio of 1:4 with deminerilized water from the plant water treatment plant.  Wash water is collected and disposal is managed through an off-site vendor.  Wastewater is not discharged to the plant waste water system.

MCW_Dest_Other_desc:
Wash water is collected and disposal is managed through an off-site vendor


Clean_desc:
The plant uses a detergent (B&B TC100) to remove metal oxides from the compressor of the unit. The water is preheated to 180 Deg. F 5 hours prior to the wash. The unit is cooled to 120 Deg. F. and is left in extended cranking mode at between 780 to 820 RPMs. A solution of 20% cleaning solution is used. The unit is prewashed with 150 gallons of solution, then it is soaked for 25 minutes.The unit is then rinsed with 500 gallons of water. The waste from the water wash is disposed of off site.The unit is returned to operation.


Clean_desc:
TABLE E1 TUBE CLEANING WAS PERFORMED 8/15/2000 ON #3 BOILER .THE CLEANING AGENT WAS EVAPORATED IN BOILER AFTER USE


Clean_desc:
TABLE -E1 C.T. COMB CHEM  (3) COMBINED CYCLE UNITS ARE OFF LINE WATER WASHED ANNUALLY WITH DETERGENT


Clean_desc:
TABLE E1 C.T. COMP CHEM (3) COMBINED CYCLE UNITS ARE OFF LINE WATER WASHED ANNUALLY WITH DETERGENT


Clean_desc:
TABLE E2  (3) COMBINED CYCLE UNITS(COMPRESSOR SECTION) ARE ON LINE WATER WASHED APPROXIMATELY 600 TIMES /YR. WITH CONDENSATE


Clean_desc:
Water hoses are used inside the boiler to wash ash off of the outside of the boiler tubes.


Clean_desc:
The plant uses a soap/water mixture to remove dust particles from the turbine compressor blades.  Wash water is captured in the turbine and gravity drained into the water wash drains tank, which are then drained periodically into the plant's process equipment sump.  From the sump, the turbine wash water is pumped to the host for treatment and discharge.


Clean_desc:
The plant uses Fyrewash F2 to remove dirt and deposits from the stainless steel compressor blades.  The water is removed from the site by a authorized liquid industrial waste contractor.


MCW_Dest_Other_desc:
Trucked to a licensed TSDF as a non-hazardous waste


Clean_desc:
The plant uses citric acid to remove copper deposits and iron oxides from the steel tube surfaces of the boiler. The citric acid is diluted to a pH of 3.5 and then used for cleaning in a two-stage process.  In the first stage, the citric acid dissolves iron oxides. In the second stage anhydrous ammonia is added to raise the pH of the cleaning solution between 9 and 10 and air is bubbled through the solution to dissolve copper deposits.


Clean_desc:
Procedure consists of high pressure service water spray from top; and bottom of the baskets.  No chemicals are added.


Clean_desc:
This process uses aq NH3, NH4HCO3,and NaBrO3 to remove copper deposits on the internal surfaces of the boiler.  The copper removal stage is followed by a water rinse. This was an unusual cleaning on this unit because it only focused on one stage copper removal.

MCW_Dest_Other_desc:
After metals are removed from waste water, the pH adjusted liquid is sent to the ash pond


Clean_desc:
This process uses aqNH3, NH4HCO3, O2, & FO85 to remove copper deposits on the HP turbine.  The chemicals are injecting as a foam and antifoam is injected into the outlet of the HP turbine to collapse the foam into a liquid.  The turbine is then water rinsed followed by a steam rinse.

MCW_Dest_Other_desc:
Metals are removed from waste water, the pH adjusted liquid is sent to the ash pond


Clean_desc:
Treated plant intake water is used to wash down the fireside of boiler tubes prior to personnel entering the boiler during each outage.  Since the boiler is a confined space this process is a necessary step in making the space safe for personnel to enter. The waste water is discharged either out of the bottom of the boiler to the base slab floor drains to the waste water basin then to the ash pond or it is drained to the economizer hoppers to the ash lift station to the ash pond.

MCW_Dest_Other_desc:
some waste water from the ash pond is recycled back to the plant for misc wash water


Clean_desc:
Raw plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the building sumps, skimmer pond and then to the ash pond.


Clean_desc:
High purity steam is blown into various sections of the boiler to mitigate slag formation and prevent ash buildup.  This steam is sprayed directly into the boiler and subsequent ash and steam is carried out of the boiler with the flue gases.  Any particles that are heavy enough to fall will be collected with in the bottom ash pit and transferred to the ash pond.


Clean_desc:
Treated plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into building sumps transferred to the skimmer pond and then to the ash pond.


Clean_desc:
This process uses aq NH3, NH4HCO3,and NaBrO3 to remove copper deposits on the internal surfaces of the boiler.  The copper removal stage is followed by a water rinse. Then an iron removal stage is performed using HAA, ABF and CH2O2. The iron removal stage is followed by a water rinse, then citric acid rinse to keep the metals in solution which is followed by a water rinse.  Following the iron removal rinses a second copper removal stage is perfomed followed by a water rinse.  The final step is a passivation stage using DSP, TSP, and N2H4 to passivate the metal surfaces.  The passivation is followed by 3 water rinses. With good feedwater treatments, the boiler should be able to last 10+ years before another is necessary.


MCW_Dest_Other_desc:
Metals are removed from waste water, the pH adjusted liquid is sent  to the ash pond


Clean_desc:
Raw plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into building sumps transferred to the skimmer pond and then to the ash pond.


Clean_desc:
Steel boiler tubes are mechanically cleaned annually by blasting tube externals with dynamite and mechanical removal.  This is a dry cleaning operation with no wastewater generated.

MCW_Dest_Other_desc:
This is a dry cleaning operation with no wastewater generated.


MCW_Dest_Other_desc:
Metals are removed from waste water, the pH adjusted liquid is transferred to the ash pond


Clean_desc:
During boiler outages, a partial cleaning of the boiler with raw plant intake water is performed using high pressure hoses.

MCW_Dest_Recyc_desc:
Used in the thickners and with the FGD and BAS handling


Clean_desc:
Use acid (EDTA/muratic) to clean boiler water tubes.  Used outside contractor with pumps and temporary tanks for neutralization of waste.


Clean_desc:
High pressure water is used intermittingly to clean ash off fireside boiler tubes while unit is operating. Water is evaporated.


Clean_desc:
High pressur ewater is used to clean ash off tubular air heater during outage


Clean_desc:
High pressure water is used intermittingly to clean ash off fireside boiler tubes while unit is operation. Water is evaporated.


Clean_desc:
High pressure water is used to clean ash off tubular air heater during an outage.


Clean_desc:
The plant used 6% hydroxy-acetic formic acid with 0.5% ammonium biflouride to remove iron deposts from steel boiler water wall tubes.  The chemical is injected and circulated throughout the boiler at approximately 200°F until analysis indicates all deposits have been removed.  The boiler is then extensively flushed to remove chemical.  The boiler is then refilled and circulated twice, first with hot water and then with cold water.  Carbohydrazide is used as a passivation agent during the hot rinse.  Ammonium hydroxide is used to elevate pH of the rinses.  All rinse water is removed from the boiler and accumulated with the initial boiler drain and flush.


Clean_desc:
The plant uses raw plant intake water during major unit outages to wash ash away from the inside of the boiler before conducting inspections and maintenance.  Approximately 40% of the wastewater is directed to SPD-1 and 60% of the wastewater is directed to SPD-2.


Clean_desc:
The plant uses raw plant intake water during major unit outages to wash ash away from the inside of the air heater before conducting inspections and maintenance.  The wastewater is directed to SPD-2.


Clean_desc:
The plant uses raw plant intake water and steam during online operation for sootblowing operations.  No wastewater is produced during sootblowing operations.  All water vapor generated is dischaged with flue gasses.


Clean_desc:
The air heaters are cleaned three times per year with approximately 30 high pressure hoses for 8 hours using water from tanker trucks.


Clean_desc:
At the beginning of a scheduled Unit outage, and/or when a boiler suffers a tube leak, untreated plant intake water is pressurized and used to remove ash accumulation from the fire-side & convection pass metal surfaces of the boiler prior to maintenance


Clean_desc:
The plant uses tetraammonium EDTA to remove copper deposits and iron oxides from the steel tube surfaces of the boiler.  The tetraammonium EDTA is fed at a pH of 9.5 and then used for cleaning in a two-stage process.  In the first stage, the tetrammonium EDTA dissolves iron oxides.  In the second stage, sodium nitrite is added as an oxidizer, and air is bubbled through the solution to dissolve copper deposits.


Clean_desc:
The plant uses hydroxyacetic formic acid to circulate and dissolve iron deposits to clean the boiler tubes.  Once a determination has been made that the deposited iron is in solution the boiler is thoroughly flushed, and refilled for circulation of a passivation solution of ammonium hydroxide and hydrazine.  The boiler is then flushed for preparation for unit start-up.

MCW_Dest_Other_desc:
The cleaning waste from Sandow Unit 4 is captured in frac tanks and transported to the Big Brown ash ponds.


Clean_desc:
The plant periodically removes iron and copper deposits from boiler water wall tubes (every 5-20 yrs).  The cleaning process used involves Ethylenediaminetetraacetic acid (EDTA).  A chemical cleaning contractor has set up the process based on tube deposit sample analysis.  The cleaning process is a two-step process where ammonia is added and oxygen is bubbled through the solution to dissolve copper deposits.


Clean_desc:
Water from the ash recycle ponds is pumped through a piping system where either conventional fire hoses or a water cannon is utilized to remove ash build up on internal boiler components.  The water is collected in the bottom ash hopper and returned to the ash recycle ponds for reuse. Surface is steel.


Clean_desc:
The plant uses ammoniated EDTA to clean the internal surfaces of boiler tubing; A300 inhibitor and an antifoaming agent is included in the cleaning process. Hydrazine is injected as a passivating agent at the end of the process.


MCW_Dest_Other_desc:
Discharged to ash pond which discharges via Outfall 001.


MCW_Dest_Other_desc:
Sent to the ash pond which then discharges via Outfall 001.


MCW_Dest_Other_desc:
Discharged to the ash pond which in turn discharges via Outfall 001.


Clean_desc:
The plant uses high pressure water from a contractor's pressure washer to clean the air heater tubes. The nozzles are inserted into the tubes washing the internals. This water is collected in a sump and the pH is adjusted as the water is pumped to the ash basins to ensure the discharge pH is within permit limits.


Clean_desc:
The plant uses high pressure water from a contractor's pressure washer to clean the boiler fireside and backpass. High Pressure wash hoses and nozzles are used to clean ash from the fireside boiler tubes and backpass which includes superheat, reheat, and economizer tubes. This water is collected in a sump and the pH is adjusted as the water is pumped to the ash basins to ensure the discharge pH is within permit limits.


Clean_desc:
The plant uses high pressure water from a contractor's pressure washer to clean the precipitator. High Pressure wash hoses and nozzles are used. This water is collected in a sump and the pH is adjusted as the water is pumped to the ash basins to ensure the discharge pH is within permit limits.


MCW_Dest_Recyc_desc:
The cleaning waste goes into the bottom ash pond


Clean_desc:
The plant uses ammoniated EDTA to remove iron and copper deposits from the steel water walls of the boiler.  Approximately 10,000 gallons of 38% EDTA is used total - as the chemical is consumed it is replenished to maintain about 1% EDTA.  In the first stage of the process the chemical is heater to 275°F and circulated until iron concentration reaches equilibrium.  In the second stage, the boiler is cooled to 160°F and oxygen is blown up water wall drains until copper concentration reaches equilibrium.  The boiler is then drained of chemical.  The boiler is rinsed twice, first with warm water which is treated with carbohydrazide, then with cool water.  All rinses are drained and held with the initial boiler drain.

MCW_Dest_Other_desc:
Evaporated in another, operating SE Unit


Clean_desc:
Sootblowing is conducted several times daily based upon the degree of slagging in the boilers.  Long lances utilize 350 psi steam and water cannons utilize 550 psi well water.  These online sootblowing activities do not result in the generation of waste water.  All water vapor is discharged with the flue gas.  As a result, Section E3 was not filled out for Sootblowing operations.


Clean_desc:
The plant uses EDTA to remove copper deposits and iron oxides from the steel tube surfaces of the boiler.  The EDTA is diluted to a pH of 5.0 and then used for cleaning in a two-stage process.  In the first stage, the EDTA dissolves iron oxides.  In the second stage anhydrous ammonia is added to raise the pH of the cleaning solution between 9 and 10 and air or 02 is bubbled through the solution to dissolve copper deposits. The inside surfaces of steel boiler tubes are cleaned.


Clean_desc:
With the gas turbine online, 30 gals. Of demineralized water is injected through nozzles into the GT compressor at a time for rinses. This process is typically repeated 3 additional times.  (Std. procedure for temps. > 50 degrees F.)


Clean_desc:
Fouling deposits buildup on the stationary and rotating combustion turbine axial compressor blades.  The plant uses a detergent diluted in water to remove these deposits when the compressor pressure indicates that it is dirty.  Compressor washing may also help in slowing the progress of corrosion, thereby increasing blade life and reducing the contribution of corrosion products to the formation of fouling deposits.

MCW_Dest_Other_desc:
The plant sends the waste by tanker truck to a landfill where it is solidified and landfilled.


Clean_desc:
The plant makes 20 gallons of acid solution and pumps it through piping into an empty 55 gallon drum.  This solution is repumped through the piping until it is felt that the pipe scale is adequately dissolved.


Clean_desc:
The plant makes 20 gallons of acid solution and pumps it through air compressor piping into an empty 55 gallon drum.  This solution is repumped through the piping until it is felt that the pipe scale is adequately disloved.


Clean_desc:
The plant needs to flush heat exchangers periodically to remove sediment and or corrosion product to maintain proper heat transfer efficiencies.  The process can just use water or the process could be augmented with brushing to facilitate sediment/corrosion removal.


Clean_desc:
The combustion turbine compressor is washed with a surfactant and water.  The washing requires turning the combustion turbine while also adding the detergent water.  This is followed by a soaking period.  The turbine is then cranked and rinsed until the pH of the wash water is neutral.  All wash water is then collected in tanks for hauling offsite for recycling and disposal.


Clean_desc:
The plant uses Zok mx (detergent) to remove deposits from the CT compressor. A water wash system supplied with demineralized water is used to dilute the Zok mx at a ratio of 5 gallons per 100 gallons of water. Once the detergent has been applied the compressor is allowed to soak for twenty minutes, then demineralized water is used to rinse the compressor (approximately 150 gallons of demin water is used during rinse). This process is repeated for a second time using the same amount of detergent and demineralized water. Total compressor cleaning waste is approximately 520 gallons.


Clean_desc:
The plant uses a Conntect 6000 cleaning solution to remove dust in the compressor section of the combustion turbine up to three times per year.  The overall solution (including prewash, solution injection, and rinses) is 22 gallons of Conntect 6000 into 511 gallons of deminerialized potable water.  The cleaning operation involves a five minute prewash using only water followed by seven minutes of solution injection.  This occurs while the unit spins at approximately 900 rpm.  The unit is stopped and allowed to soak for approximately 30 minutes.  Two 10 minute rinsing operations occur separated by 20-30 minutes.  Of the total 533 gallons of solution, about 157 gallons of effluent is sent to the retention pond.  The remaining amount of solution is vaporized during the washing process.

MCW_Cmgld_Other_desc:
Boiler blowdown, stormwater, and demineralizer backwash

MCW_Onsite_TS_Other_desc:
Retention pond where settling, percolation, evaporation, and (if needed) neutralization occurs


Clean_desc:
The plant uses a water wash solution to clean the compressor section of a gas turbine offline. The water wash soution is diluted with demineralized water and injected into the compressor section. After a washing and soaking the compressor section is then rinsed clean using only demineralized water.


Clean_desc:
The plant uses a water wash solution to clean the compressor section of a gas turbine. The water wash soution is diluted with demineralized water and injected into the compressor section. After a washing and soaking the compressor section is then rinsed clean using only demineralized water.


Clean_desc:
The plant uses Rochem - Fyrewash F3 to remove accumulated contaminents that collect on the compressor and combustion byproducts that collect on the turbine of the Combustion Turbine Unit.  The Rochem - Fyrewash F3 is diluted with approximately 200 gallons of demineralized water in a portable injection tank.  The contents of the tank is then injected into both the compressor and the turbine portions of Combustion Turbine Unit with the unit in "crank" mode.  The solution is allowed to soak for no more than 20 minutes and then the compressor and turbine portions of the Combustion Turbine Unit is rinsed until there is no soapy water coming out of the drains.


Clean_desc:
Soot blowing of boilers as well as its air heater are done by using steam.  The steam used is usually generated from the treated plant intake water that is typically used in all the boiler units.


Clean_desc:
The combustion turbine and compressor are cleaned by pressure washing with treated plant intake water mixed with Zok 27 in 50/50 concentration.  The pressure washing is repeated if after inspection the turbine and/or compressor are determined to be not thoroughly cleaned.


Clean_desc:
Water rinse of air heater to remove ash/dirt from baskets for improved efficency


Clean_desc:
The unit uses ammoniated EDTA to remove iron oxide and copper deposits from steel tube surfaces of the boiler in a two stage process.  The first stage injects EDTA and a corrosion inhibitor to remove iron oxide deposits.  In the second stage, anti-foam, ammonia and oxygen are added to the cleaning solution to increase the pH to 9.0 - 9.5 and decrease the bulk solution's ORP to -220mV to enable the removal of copper deposits.

MCW_Dest_Other_desc:
Waste is collected in temporary storage tanks and hauled offsite to a treatment facility for disposal.


Clean_desc:
The unit utilizes raw intake (lake) water to spray through high pressure nozzles to remove particulate buildup due to incoming combustion air from air heater internals.


MCW_Cmgld_Other_desc:
Lab drains and Low volume wastes from the plant service water system.


Clean_desc:
The unit uses high pressure hoses to spray filtered water to mechanically remove slag deposits from the external fireside of steel boiler tubes.


Clean_desc:
The plant uses high pressure water washing nozzles to spray filtered water to remove flyash and deposit pluggage from the air heater internals.


Clean_desc:
The unit uses blowers with steam from the steam drum to remove flyash and slag deposits from the fireside of steel boiler tubes.


Clean_desc:
Fill and heat the system with demineralized water.  Inject inhibited acid mixture consisting of hydroxyacetic acid, formic acid, inhibitor and ammonium bifluoride.  Circulate for appropriate time and displace with demineralized water.  Inject citirc acid, circulate and displace with demineralized water.  Inject ammonia and circulate passivation solution.  Displace passivation and drain under nitrogen blanket.  Neutralize each stage when the materials is displaced from the boiler.


Clean_desc:
The boiler is warmed to approximately 200F. The  2 percent formic and 1.5 percent citric acid solutions are then injected into the boiler and circulated through the boiler tubes. The solutions remain in the boiler for several hours. Mostly iron deposites are removed from the boiler tube surfaces. The acid solutions are then drained and subsequently treated in WWT-1. The boiler tubes are then rinsed several times with demineralized (condensate) water. The last rinse includes the ammonium bifluoride to passivate the interior of the boiler tube surfaces.


Clean_desc:
The boiler is not warmed. The  hydrochloric and thiourea acid solutions are then injected into the boiler and circulated through the boiler tubes. The solutions remain in the boiler for several hours. Mostly iron deposites are removed from the boiler tube surfaces. The acid solutions are then drained and subsequently treated in WWT-1. The boiler tubes are then rinsed several times with demineralized (condensate) water. The last rinse includes aqua ammonia to passivate the interior of the boiler tube surfaces.


Clean_desc:
During scheduled plant outages the plant uses fire water to remove extremely hard ash deposits from the fireside boiler tube surface. The fire water is pressurized anywhere from 8,000 to 40,000 psi by 600 horsepower pump skids; the high pressure water jet is then directed onto the tube surface by specially designed cleaning nozzles.


Clean_desc:
During scheduled plant outages the plant uses fire water to remove ash deposits from the air heater's heat transfer baskets. The fire water is pressurized to 10,000 to 15,000 psi by 600 horsepower pump skids; the high pressure water jet is directed onto the air heater baskets via specially designed cleaning nozzles.


Clean_desc:
The plant has 52 steam wallblowers, 18 waterlance wallblowers, and 44 long retractable steam sootblowers to maintain fireside tube cleanliness to the best of our abilities. These pieces of equipment are available for continuous service and are controlled with intelligent sootblowing control system to clean only those sections that are dirty. Any water/steam supplied to the cleaning devices immediately flashes and evaporates upon impact with the hot ash/flue gas within the boiler.


Clean_desc:
The Plant uses ammoniated EDTA, circulated and heated to remove iron deposits from inside the boiler tubes.  When complete, oxygen is added to remove copper and passivate the metal.  The boiler is rinsed with pure water.


Clean_desc:
Steam, bled off of the boiler, used to remove fly ash from boiler tubes while in service.

MCW_Dest_Other_desc:
soot blowing with steam forces particles into flue gas and thru ESPS, then is collected in silo


Clean_desc:
Low pressure water wash for purposes of removing accumulated fly ash from external surfaces of boiler tubes.  This operation is conducted as preliminary maintenance.

MCW_Dest_Other_desc:
fly ash settles with sediments in SPD-1 and SPD-2, which then goes to landfill


Clean_desc:
Low pressure water wash for purposes of removing accumulated fly ash from air heater tubes.

MCW_Dest_Other_desc:
fly ash removed with SPD-1 and SPD-2 sediments and landfilled


Clean_desc:
The Plant uses ammoniated EDTA, circulated and heated to remove iron deposits from inside the boiler tubes.  When complete, oxygen is added t remove copper and passivate the metal.  The boiler is rinsed with pure water.


Clean_desc:
Two firehoses are used for appoximately 10 hours each shift during a single day (20 hours total) to wash interior boiler surfaces with raw intake water.  This operation would typically only occur during a scheduled outage or as needed during a forced outage.


Clean_desc:
Raw intake water is used to clean air heater passages as needed during a scheduled outage.


Clean_desc:
The plant uses EDTA to remove copper deposits and iron oxides from the steel tube surfaces of the boiler in a two stage process.  In the first stage, the EDTA dissolves iron oxides.  In the second stage ammonium hydroxide is added to raise the cleaning solution pH between 9.0 and 10.0.  Oxygen gas is bubbled through the solution to dissolve copper deposits, and to provide a protective passivation layer on the boiler tube surfaces.


Clean_desc:
At the beginning of a scheduled Unit outage, and/or when the air pre-heater pressure drop exceeds operating specifications, untreated plant intake water is pressurized and used to remove ash accumulation from the hot-side metal surfaces of the air pre-heater.


Clean_desc:
The plant uses ammoniated EDTA to remove iron oxides from the steel tube surfaces of the boiler.  Once the iron oxides have been removed, ammonia is added to raise the pH to between 9 and 10 and oxygen is bubbled through to remove copper deposits.


Clean_desc:
The plant uses Zok 27 in addition to treated water for the cleaning procedure as recommended by General Electric.

MCW_Dest_Other_desc:
waste is collected and sent to a certified waste treatment facility.


Clean_desc:
The plant use Zok 27 in addition to treated water for the cleaning procedure as recommended by General Electric

MCW_Dest_Other_desc:
waste is collected and sent to a certified waste treatment facility


Clean_desc:
High pressure water is used to remove deposits from the fireside of the boiler tubes.


Clean_desc:
High pressure water is used to remove deposits from the air heater.


Clean_desc:
The plant uses compressed air to remove soot deposits from the fire-side of the boiler tubes.

MCW_Dest_Other_desc:
Combined with flyash in the electrostatic precipitator.


Clean_desc:
The plant uses hydrochloric acid to remove copper deposits and iron oxides from the steel tube surfaces of the boiler in a four-stage process.  In the first stage, ammonium bicarbonate, ammonium hydroxide, and thiourea are blend-filled.  Air is then bubbled through the solution to dissolve copper deposits.  In the second stage, the boiler is blend-filled with hydrochloric acid and thiourea to dissolve iron oxides and copper deposits.  Nitrogen gas is bubbled through the solution to assist solvment movement.  In the third stage, the boiler is rinsed twice, with the second rinse containing citric acid to dissolve iron deposits.  In the fourth stage, soda ash is used to raise the pH of the solution between 9 and 10.


Clean_desc:
The plant uses hydrochloric acid to remove copper deposits and iron oxides from the steel tube surfaces of the boiler in a four-stage process.  In the first stage, ammonium bifluoride, ammonium hydroxide, and thiourea are blend-filled.  Air is then bubbled through the solution to dissolve copper deposits.  In the second stage, the boiler is blend-filled with hydrochloric acid and thiourea to dissolve iron oxides and copper deposits.  Nitrogen gas is bubbled through the solution to assist solvment movement.  In the third stage, the boiler is rinsed twice, with the second rinse containing citric acid to dissolve iron deposits.  In the fourth stage, soda ash is used to raise the pH of the solution between 9 and 10.


Clean_desc:
The plant uses service water to remove ash and soot from the fireside tube surfaces.

MCW_Cmgld_Other_desc:
And other process wastewaters sent to WWT-1


Clean_desc:
The plant uses service water to remove ash and soot from the air heaters.


Clean_desc:
The unit uses a solution of hydroxyacetic acid, formic acid, ammonium bifluoride and a corrosion inhibitor to remove iron oxides from steel tube surfaces of the steam generator in a two stage process.  In the first stage the cleaning solution dissolves iron oxides.  In the second stage the cleaning solution is drained to a metal cleaning waste tank and the steam generator is refilled with condensate conditioned with ammonia and an oxygen scavenger to a pH of 9.5 - 10.0 to enable the passivation of metal surfaces.  The passivation solution is then drained to the metal cleaning waste tank.


Clean_desc:
1st stage - Antifoam, surfactant, and 50% caustic used as a degreaser on new installed boiler. 2nd Stage - Corrosion inhibitor and 50% citric acid used for removal of millscale and iron oxide. pH adjustment stage - ammonium hydroxide for pH adjustment 9.2 - 9.5. Passivation stage - sodium nitrate


Clean_desc:
Inject foamed cleaning solution (foaming agent, ammonia, ammonium biocarbonate) plus hydrogen peroxideinto turbine. Foamed ammonia and hydrogen peroxide added to convert eloemental copper to copper oxide to remove copper deposits from turbine blades an nozzles. Following cleaning rinse with foamed condensate, followed by antifoam rinse.


Clean_desc:
Oxysolve, an ammonia/ammonium bicarbonate foaming blend is used to remove copper deposits on internal surfaces, blades and nozzles. This foam is injected into the turbine internals which are heated to 170 F and follows the steam path through the turbine, before being collected in the cold reheat piping. This process is repeated until copper is no longer detected in the effluent. The waste water from this operation was disposed of in the lined evaporation pond.


Clean_desc:
The plant uses 100 gallon per minute fire hoses to wash the fireside boiler tubes during outages before repairs are performed.

MCW_Dest_Recyc_desc:
Recycled back to the FGD process as makeup water.


Clean_desc:
The plant using treated process water to wash the air heaters during outages.


Clean_desc:
The plant used ammoniated EDTA to remove copper deposits and iron oxides from the internal tube surfaces of the boiler.  The EDTA is diluted to 6% and then used for cleaning in a 2 stage process.  During the first stage the EDTA dissolves the iron oxides and in the second stage aqua ammonia and oxygen is added to dissolve copper deposits.


Clean_desc:
The plant used service water to wash the ash and slag from the boiler tubes before starting an outage event.  The waste water is collected from under the boiler and pumped to the metals cleaning pond for treatment.


Clean_desc:
High pressure service water was directed on the top of the air preheater and the run off was collected and pumped to the metals cleaning pond for treatment.  The plant uses service water to wash the air preheater baskets before replacing them during an outage.


Clean_desc:
High pressure service water was directed at the inlet of the Mechanical Dust Collectors (MDC) and the wash water ran through the swirl vanes to the outlet side of the MDC and into the ash collection hoppers.  The waste water is collected and pumped to the metals cleaning pond for treatment.  The plant uses service water to wash the MDC before performing maintenance on them during an outage.


Clean_desc:
This unit uses station high pressure air to blow soot.  The lances move into the boiler and blow air onto the slage and ash.  The material is either carried away as normal fly ash or drops into the ash pit as bottm ash.  No liquid is created in the process.


Clean_desc:
The plant uses steam to remove boiler slag from the boiler tubes while the unit is on line. The steam pressure removes accumulated slag which falls to the bottom of the furnace and is removed by the bottom ash conveyor system.


Clean_desc:
Raw intake water is pumped up to 10,000 psi and used to clean the ash off the outside of boiler tubes.  The water is then sent to the ponds to prepitate any metals out.


Clean_desc:
Raw intake water is pumped up to 5,000 psi and used to clean the ash off the air heater baskets.  The water is then sent to the ponds to prepitate any metals out.


Clean_desc:
Steam from the boiler at 600 psi and slightly above saturation temperature is reduced to 175 psi and used to clean ash off the outside of boiler tubes.  The steam stays in vapor form and goes out with the flue gas.


Clean_desc:
The plant uses ammonium EDTA in a 2 stage process


Clean_desc:
The Plant uses high pressure general service water, with no additives, to physically wash the air preheaters.


Clean_desc:
The plant uses high pressure general service water with no additives to physically wash the air preheaters.


Clean_desc:
A contracting firm is brought on site and a plan is devised.  Safety and procedures are reviewed.  Ammoniated EDTA is dulted into the boiler and boiler tubes (approx 12000 gallons) to a concentration of 4-5% and recirculated.  The EDTA solution is circulated by pumping and or air blowing.  The waste solvent and rinse is drained to frac tanks, and analyzed to determine if it is hazardous.  Request for approval to evaporate the waste is made to the state and evaporation is performed according to the criteria establised by the state following approval.


Clean_desc:
The Forced Draft fans are power washed using city water and Jettacin, a multipurpose cleaner.  All material was sent to floor drain, then to the cinder pit and to the ash ponds.  Minimal solid material was removed.


Clean_desc:
Rotary air pre-heater is power washed using city water.  Wash is routed to bottom ash hopper via temporary piping and then to ash pond.


Clean_desc:
A contracting firm is brought on site and a plan is devised.  Safety and procedures are reviewed.  Ammoniated EDTA is diluted into the boiler and boiler tubes (approx 21000 gallons) to a concentration of 4-5% and recirculated.  The EDTA solution is circulated by pumping and or air blowing.  The waste solvent and rinse is drained to frac tanks, and analyzed to determine if it is hazardous.  Request for approval to evaporate the waste is made to the state and evaporation is performed according to the criteria establised by the state following approval.


Clean_desc:
Untreated plant intake water is pressurized and used to remove buildup of ash on plates and electrodes on the inside of the precipitators, and occasionaly to remove excessive buildup of ash.  Hot-side precipitators require a water wash for maintenance.


Clean_desc:
This process uses aq NH3, NH4HCO3,and NaBrO3 to remove copper deposits on the internal surfaces of the boiler.  The copper removal stage is followed by a water rinse.  Then tetra-ammoniaum EDTA to remove iron.  Once the iron removal stage is competed O2 is injected to remove copper and passivate the metal surfaces.  This is followed by 2 - 3 water rinses.


Clean_desc:
In 2009, the plant used a Two-Stage Chemical Cleaning process using diammonium ethylene-diamine tetraacetic acid (EDTA) to remove copper deposits and iron oxides internal deposits on the steel tube surfaces of the boiler (41,500 gallons-center drum).  In the 1st Stage, the EDTA dissolves iron oxides.  In the 2nd Stage, amm is added to the cleaning solution to raise the pH between 9 and 10 & oxygen was bubbled through the solution to dissolve copper deposits.  The cleaning solution was drained and the boiler rinsed twice with water.  All boiler drains from this process were collected in temporary storage tanks

MCW_Dest_Other_desc:
Boiler Waste was collected in temporary storage (frac tanks).  Plant air permit allows on-site evaporation of a fixed quantity of EDTA per year; quantities above this limit were hauled off-site.


Clean_desc:
At the end of a scheduled Unit outage, and/or when the air pre-heater pressure drop exceeds operating specifications, untreated plant intake water is pressurized and used to remove ash accumulation from the hot-side metal surfaces of the air pre-heater.


Clean_desc:
Unit 5's air preheaters are periodically rinsed using pressurized water to remove combustion by-products to increase heat transfer, air flow and efficiency of the preheaters. Rinse water is collected and routed to metals ponds.


Clean_desc:
The economizer section of Unit 5's boiler is periodically rinsed using pressurized river water in order to improve heat transfer and unit efficiency. Rinse water is collected and routed to metals ponds. Accumulated ash is vacuumed out prior to washing. Ash is transported off site to a landfill.


Clean_desc:
The Unit 5 mechanical dust collectors are periodically cleaned when they become full. Pressurized water (river water) is used for the process. Accumulated ash is vacuumed out prior to washing. Ash is transported off site to a landfill.


Clean_desc:
5 gal of Fryewash F3 is diluted with 50 gal of demin water and injected through nozzles into the compressor inlet. After a soak period demin water is used to rinse the detergent and deposits from the compressor.


Clean_desc:
This is a preoperational cleaning to remove grease and mill scale from the boiler tubes and internal surfaces.  The HRSG is filled with approximately 83,000 gal of demineralized water and heated to 160-190°F.  Batch mix of inhibitor, surfacant, and EDTA is injected to remove grease and iron.  Solution is neutralized to pH of 9.2-9.4 using ammonium hydroxide.  Antifoaming agent is used as needed and hydrogen peroxide is used for passivation.  Solution is drained into holding tank, and rinse cycle is utilized as needed.  All waste water hauled offsite for disposal.

MCW_Dest_Other_desc:
The waste was pumped to a holding tank and then trucked offsite


Clean_desc:
Prior to operating the heat recovery steam generator (HRSG), a chemical mixture containing diammonium EDTA, corrosion inhibitor, surfactant and hydrazine was recirculated through the HRSG to remove oil and grease, iron oxides and manufacturing debris from the internal surfaces of the HRSG and passivate the metal surfaces.


Clean_desc:
The plant uses FYREWASH F2 to remove grime and dirt from the compressor section of the combustion turbine. When the turbine is off, a solution of the cleaner is sprayed onto the compressor section, the solution is allowed to soak and then demineralized water is sprayed onto the compressor section to rinse off the grime and dirt.

MCW_Dest_Recyc_desc:
The plant recycles this waste stream as makeup to the cooling tower.


Clean_desc:
The plant uses Ammonium EDTA to remove iron oxides from the steel tube surfaces of the boiler.  The EDTA is mixed with boiler water for a pH of 9.0 - 9.5 and the boiler is heated.  Copper removal is performed by adding gaseous oxygen.


Clean_desc:
Steam Generator Chemical Cleaning (SGCC) was performed using a 10-step process with a goal to remove iron and copper fouling deposits from the secondary side of the steam generator (SG).  Removal of these materials is necessary to ensure continued safe and reliable operation of the SGs, and this level of cleaning cannot be achieved via mechanical cleaning alone.  Step 1 is a pre-cleaning check-out rinse that serves to heat up the SG and confirm proper equipment setup and tightness, and is includes a 15 ppm hydrazine solution with a pH > 10 and a temperature of 250 degrees F.  Step 2 is for Tubesheet Deposit Removal, and includes a 15% EDTA, 1% hydrazine, 1.5% inhibitor, 0.25% DMA, and 200 ppm antifoaming agent solution with a pH of 7.0 and a temperature of 230 degrees F. Step 3 is for Bulk Iron Deposit Removal, and includes a 15% EDTA, 1% hydrazine, 1.5% inhibitor, 0.25% DMA, and 200 ppm antifoaming agent solution with a pH of 7.0 and a temperature of up to 250 degrees F.  Step 4 is for Iron Solvent - Crevice Cleaning and re-uses the partially spent solvent from Step 3 at a temperature of 250 degrees F.  Step 5 is for Tubesheet Sludge Removal and re-uses the partially spent solvent from Steps 3 and 4, at a temperature of 230 degrees F.  Steps 6 and 7 are Low Volume Rinses and Full Volume Rinse and Cool Down.  These steps are to remove the residual cleaning chemicals utililzed in the previous steps.  Step 8 is the Copper Solvent and includes a 5% EDTA solution, 3% hydrogen peroxide, and EDA and ammonium hydroxide as needed to achive target pH values of 7.0 and 9.5.  Target temperatures during this step are 85 to 130 degrees F.  Steps 9 and 10 are Low Volume Rinses and a Full Volume Rinse for final clean up and removal of all solvent.

MCW_Dest_Other_desc:
Containerized and transported off-site for treatment/disposal.


Operation_ID:
Steam Generator Advance Scale Conditioning Agent Application

Clean_desc:
The Advanced Scale Conditioning Agent (ASCA) application is used to soften and remove fouling deposits on the secondary side of the steam generator (SG).  EDTA is utilized as the chemical agent, and the concentration used in the cleaning solution is determined based on characteristics of the deposits in the SG.  For the Unit 1 ASCA cleanings a concentration of 3,300 ppm EDTA was utilized.


Clean_desc:
The plant uses Fyrewash (article number 73790) mixed with treated intake water to wash the compressor section of the combustion turbines on-site.  The first step is to mix the cleaning agent with the water to perform a detergent wash of the compressor.  The second step is to rinse the compressor with water.  The accumulation of the wash and rinse cycles is contained in the same containment pit.  It is then collected and disposed of by a certified non-hazardous waste disposal contractor.

MCW_Dest_Other_desc:
Disposed of off-site by a certified non-hazardous waste disposal contractor


Operation_ID:
High Temperature Chemical Clean (HTCC) of Steam Generators for iron removal

Clean_desc:
The plant used a High Temperature Chemical Cleaning (HTCC) process to remove iron oxide from the steam generator tube surfaces. A concentrated HTCC cleaning solution was prepared off site using bulk chemicals.  The concentrated cleaning solution was blended with demineralized water at the site. The HTCC step was applied at 290 degrees F for 10 hours. The HTCC step was followed by 2-3 low volume rinses (LVR) and one full volume rinse (FVR). The objective of the LVRs is to remove as much of the residual cleaning solvent as possible prior to the FVR. After the FVR, passivation of the steam generators was accomplished with wet layup recirculation using condensate, ammonium hydroxide. and hydrazine.

MCW_Dest_Other_desc:
The process waste solution was sent to a temporary evaporator and the concentrated waste was sent offsite. Distallates were sent to the onsite lined evaporation ponds.


Operation_ID:
Sludge Lancing with or without upper bundle flushes

Clean_desc:
Sludge lancing is a high-volume water cleaning process that removes erosion and corrosion products (sludge) deposited on the tubesheet surface inside the secondary sides of recirculating steam generators. The sludge and water  slurry is removed from the steam generator and either run through a filter or an evaporator. The water portion is recycled in the secondary or primary system and the solids are shipped off site as low level rad waste.

MCW_Dest_Other_desc:
Slurry is sent to an evaporator or filtered. Water portion is recycled in the secondary or primary system.


Operation_ID:
Sludge Lancing with or without upper bundle flushing

Clean_desc:
Sludge lancing is a high-volume water cleaning process that removes erosion and corrosion products (sludge) deposited on the tubesheet surface inside the secondary sides of recirculating steam generators. The sludge and water slurry is removed from the steam generator and either run through a filter or an evaporator. The water portion is recycled in the secondary or primary system and the solids are shipped off site as low level rad waste.


Clean_desc:
The Advanced Scale Conditioning Agent (ASCA) application is used to soften and remove fouling deposits on the secondary side of the steam generator (SG).  EDTA is utilized as the chemical agent, and the concentration used in the cleaning solution is determined based on characteristics of the deposits in the SG.  For the Unit 2 ASCA cleaning a concentration of 6,500 ppm EDTA was utilized.


Clean_desc:
A vendor removes the well pump and cleans the well in three stages.  Stage one applies a mixture of 10 gallons of NW-220 dispersant and 1200 gallons of well water into the well with a sonar jet. Stage two is 1000 gallons of hydrochloric acid with 35 gallons of NW-310 dispersant. This solution is surged into the well screen and formation and allowed to soak. Stage three is 25 gallons of sodium hypochlorite and 1500 gallons of well water into the well. All wastewater is transported to the bottom ash pond after neutralizing.


Clean_desc:
The plant uses a biodegradable detergent (active ingredient=<10% diethylene glycol monobutyl ether) up to two times a year on the compressor section of each combustion turbine.  Up to 8 gallons of detergent is used with approximately 125 gallons of water.  Any amount of waste water that does not immedately evapoate is discharged to a sump area where it is allowed to evaporate.


Clean_desc:
The gas turbine compressor is cleaned with the unit offline by spinning the unit at cranking speed and injecting demin water to rinse the compressor.  After this initial rinse, a small amount of ZOC-27 soap is mixed with demin water and injected into the compressor.  The unit is then stopped to let the soap soak.  After soaking, the unit is again spun at cranking speed, and demin water is injected at intervals until the soap is rinsed away.  The unit is stopped, the drains are confirmed empty, and the unit is then fired for drying.

MCW_Dest_Other_desc:
The waste is drained to a designated sump until the sump is full, then it is trucked offsite.


Clean_desc:
Unit output is reduced, and demin water is injected at intervals.  The unit output is then held stable for an hour before releasing for load changes.


Clean_desc:
Place air pre-heater to be washed on slow drive.  Wash for one revolution (15 minutes) with city water only, then open soda wash supply for another 15 minutes.


Clean_desc:
Ammoniated EDTA is used to remove copper and iron oxide deposits from the tube surfaces of the boiler in a two-stage process. The first stage is a 10% soluton of ammoniated EDTA.  Ammonium hydroxide is fed to maintain a pH of 8.8-9.2. and a mild steel corrosion inhibitor is added. The EDTA dissolves the iron oxides. In the second stage sodium nitrite and an anti-foaming agent are added to the cleaning solution. Gaseous oxygen is bubbled through the boiler tubes to remove the copper and passivate the metal.


Clean_desc:
Ammoniated EDTA is used to remove copper and iron oxide deposits from the tube surfaces of the boiler in a two-stage process. The first stage is a 10% soluton of ammoniated EDTA.  Ammonium hydroxide is fed to maintain a pH of 8.8-9.2. and a mild steel corrosion inhibitor is added. The EDTA dissolves the iron oxides. In the second stage an anti-foaming agent is added to the cleaning solution. Gaseous oxygen is bubbled through the boiler tubes to remove the copper and passivate the metal.


Clean_desc:
5 gallons of detergent Conntect 6000 mixed with 200 gallons per water on compressor section - this is done twice per "wash"


Clean_desc:
The plant uses a cleaning unit that injects *** through nozzles directly in to the compressor side of the turbine.*** is diluted and then used for cleaning. We then collect the solution in a waste tank via gravity, pump it in to collection bins and have them disposed of along with our hazardous wastes.


Clean_desc:
The plant uses ammonium hydroxide and ammonium bicarbonate to remove copper deposits from the turbine steam path, valves, and blades.  The cleaning solution is foamed and injected through the tubine valves and blades to remove the copper deposits.


Clean_desc:
The plant used sodium bromate, ammonium bicarbonate, and aqua ammonia to dissolve copper deposits in the unit 3 superheater.  The chemicals were dissolved in 13, 000 gallons of water for cleaning in a three stage process.  The superheater was filled and drained 3 times with the chemical solution to remove copper deposits.


Clean_desc:
The plant uses lake water under high pressure to remove ash residue from the internal boiler tubes.


Clean_desc:
The plant uses lake water under high pressure to remove ash residue from the air preheater.


Clean_desc:
The plant uses DI water to remove water soluble deposits from the turbine steam path, valves, and blades.


Clean_desc:
The plant uses lake water under high pressure to remove ash residue from the internal boiler economizer tubes.


Clean_desc:
The plant uses high pressure water washing nozzles to spray treated water to remove flyash and deposit pluggage from the air heaters.  The plant has a total of three air heaters and all three are cleaned during each cleaning event.


Clean_desc:
The plant uses blowers with steam from the high pressure turbine exhaust to mechanically remove excess slag deposits from the fireside of steel boiler tubes.


Clean_desc:
The plant uses hydroxyacetic formic acid to circulate and dissolve iron deposits to clean the iron boiler tubes.  Once a determination has been made that the deposited iron is in solution the boiler is thoroughly flushed, and refilled for circulation of a passivation solution of ammonium hydroxide and hydrazine.  The boiler is then flushed for preparation for unit startup.

MCW_Dest_Recyc_desc:
The solution is dumped to the station sump and into the onsite bottom ash ponds.


Clean_desc:
The plant uses hydroxyacetic formic acid to circulate and dissolve iron deposit to clean the iron boiler tubes. Once a determinantion has been made that the deposited iron is in solution the boiler is thoroughly flushed, and refilled for circulation of a passivation solution of ammonium hydroxide and hydrazine. The boiler is then flushed for preparation for unit startup.


Clean_desc:
Untreated plant intake water is pressurized and used to remove buildup of ash on plates and electrodes on the inside of the precipitators, and occasionaly to remove excessive buildup of ash.  Cold-side precipitators require a water wash for maintenance


Clean_desc:
Fire system water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into building sumps transferred to the skimmer pond and then to the ash pond.


Clean_desc:
Raw plant intake water is used to wash down the fireside of boiler tubes prior to personnel entering the boiler during each outage.  Since the boiler is a confined space this process is a necessary step in making the space safe for personnel to enter. The waste water is discharged either out of the bottom of the boiler to the base slab floor drains to the waste water basin then to the ash pond or it is drained to the economizer hoppers to the ash lift station to the ash pond.


Clean_desc:
Raw plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into building sumps transferred to the skimmer pond and then to the ash pond


Clean_desc:
The plant uses lake water under high pressure to remove ash residue from electostatic precipitator.


Clean_desc:
The plant uses raw river water via fire water system to wash any accumulation of fly ash and ammonium bisulfate (ABS) buildup from the air heater baskets which restricts airflow and reduces boiler efficiency. The waste water is routed to the ash sluice system and transported to the ash pond.


Clean_desc:
The plant uses raw river water via fire system to remove fly-ash accumulation from the collection plates and electrodes. When the plates and electrodes are fouled by excessive build-up of fly-ash, precipitator performance is adversely affected. Waste water is collected and sent to the ash pond utilizing the ash sluice system.


Clean_desc:
Water soot blowers are utilized to clean slag deposits from the internals of the boiler. They are operated randomly as necessary by the boiler operator.  Metal Type cleaned is Carbon Steel. Ash is capture in the bottom ash system and water is evaporated during cleaning process.


Clean_desc:
The Plant uses a contractor to rinse the Stainless steel turbine blades with an ammonia solution foam that dissolves the copper deposits off of the blades. The foam is injected into the turbine and the turbine is turned slowly to treat the blades evenly and then steam rinsed. All liquids and dissolved solids are put into tanks and hauled offsite to an approved disposal facility.

MCW_Dest_Other_desc:
Trucked off site to an approved disposal facility. No wast is recycled onsite.


Clean_desc:
Ammoniated EDTA water is run through the steel boiler tubes and then the water goes to the evaporation ponds.


Clean_desc:
Demineralized well water is appllied to the inside of the boiler with water lances during operation using a controlled sequence based on boiler tube temperature readings.  Small amounts of solids are produced.


Clean_desc:
EDTA, inhibitor, antifoaming agent, and oxygen are mixed with demineralized well water and run through the boiler tubes to remove copper and iron deposits.  The cleaning volume and one rinse are collected, tested, and then evaporated in the boiler.


Clean_desc:
The unit uses high pressure hoses with filtered water to wash off flyash and deposit pluggage from the air heater internals.


Clean_desc:
The plant utilized hydrochloric acid to remove copper deposits and iron oxides from the steel tube surface of the water wall section of the boiler.  Hydrochloric acid was diluted to 6% to remove the metals.  Additives were used to enhance the cleaning.  Thiourea (0.25%) was added to increase the copper solubility.  Ammonium Bifluoride (0.5%) was added to improve silica deposit removal.   Rodine 426 (0.25%) as added to inhibit further corrosion of the boiler tubes.  The boiler was fired and this solution was allowed to soak in the boiler until iron removal stopped.  The boiler was pasified with a mixture of soda ash (pH adjustment) and Triethanolamine.

MCW_Cmgld_Other_desc:
Regeneration wastes, floor drain waters, coal  and limestone pile runoff,boiler blowdown, air heater wash water

MCW_Dest_Other_desc:
Reused as FGD make up or reagent prep and/or bottom ash sluice.


Clean_desc:
Raw water is used to wash the air heater baskets until the pH is above 6.  Once above 6, bottom ash water is recirculated through the baskets until clean.  The water from the initial clean is sent to LWTS settling basins for treatment before the water is recycled.


Clean_desc:
Steam is used to remove solids buildup in the boiler.  This is a manual procedure and is done on an as needed basis while the boiler is on-line.


Clean_desc:
The last water side chemical cleaning used an alkaline solution to remove residual oil and grease and EDTA for iron oxide and copper deposit removal.  The first stage involved heating the boiler and circulating the alkaline solution (trisodium phosphate, sodium hydroxide, and a surfactant) to remove any residual oil and grease.  The iron oxide removal stage involves circulating EDTA and a scale inhibitor while heating and cooling the boiler (250 to 290 F).  The final stage involves rapidly cooling the boiler (160 to 180 F), while still circulating EDTA, and blowing oxygen thru the boiler tubes to remove copper oxides.

MCW_Dest_Other_desc:
Waste stream is collected in frac tanks and evaporated during normal operation.


Clean_desc:
The air heater must be cleaned periodcally to remove flyash that may be obstructing the amount of air able to pass thru the air heater.  The cleaning process involves installing spray nozzles on the top and bottom sections of the air heater and then hooking a high pressure water truck to supply the nozzles with untreated intake water.  Typically the truck used to wash air heaters is capable of supplying water to the nozzles at a maximum pressure of 5000 psi.  The process can take from 8 to 14 hours depending on the extent of air heater basket pluggage.


Clean_desc:
The last water side chemical cleaning used ammonia bromate and EDTA to remove iron oxide and copper deposits.  The first stage involved heating the boiler and circulating the bromate solution for the removal of copper oxides.  The iron oxide removal stage involves circulating EDTA and a scale inhibitor while heating and cooling the boiler (250 to 290 F).  The final stage involves rapidly cooling the boiler (160 to 180 F), while still circulating EDTA, and blowing oxygen thru the boiler tubes to remove copper oxides that might have been under the iron oxide deposits.


Clean_desc:
The cleanings for soot blowing operations occur daily as needed with air.  The solids generated from the soot blowing operation is boiler slag.  The boiler slag is collected with the bottom ash in the bottom ash hopper and then transported to the disposal area.  It is difficult to determine the amount of boiler slag that is removed from this cleaning operation because it is dependent upon the type of coal burned in the boiler, and is collected with the bottom ash.


Clean_desc:
The fire side boiler tubes are typically cleaned by a high pressure water truck using untreated intake water to remove any slag or flyash that has built up on the wall or around the burner ports.  The material that is washed is collected and disposed of through the bottom ash handling system.


Clean_desc:
The air heater must be cleaned periodcally to remove flyash that may be obstructing the amount of air able to pass thru the air heater.  The cleaning process involves installing spray nozzles on the top and bottom sections of the air heater and then hooking a high pressure water truck to supply the nozzles with treated intake water.  Typically the truck used to wash air heaters is capable of supplying water to the nozzles at a maximum pressure of 5000 psi.  The process can from 8 to 14 hours depending on the amount of flyash present.


Clean_desc:
Treated plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into ash lift stations and then to the ash pond.


Clean_desc:
Untreated plant intake water is pressurized and used to remove buildup of ash on plates and electrodes on the inside of the precipitators, and occasionaly to remove excessive buildup of ash. These cold-side precipitators require a water wash for maintenance.


Clean_desc:
In 2009, the plant used a blend of Hydroxyacetic and Formic Acids, with Ammonium BiFluoride to remove iron oxides from the internal steel surfaces of the boiler (134,500 gallons Cleaning Volume).  The boiler cleaning solvent was flushed from the boiler with a neutralizing ammonia solution.  All boiler cleaning waste and rinses were drained to the metal cleaning waste pond.

MCW_Onsite_TS_Other_desc:
Cleaning waste was held in metal cleaning pond for > 1 yr, then water is drained to ash pond


Clean_desc:
At the beginning of a scheduled Unit outage, and/or when the air pre-heater pressure drop exceeds operating specifications, untreated plant intake water is pressurized and used to remove ash accumulation from the hot-side surfaces of the air pre-heater.


Clean_desc:
In 2010, the plant used a blend of Hydroxyacetic and Formic Acids, with Ammonium BiFluoride to remove iron oxides from the internal steel surfaces of the boiler (134,500 gallons Cleaning Volume).  The boiler cleaning solution is flushed from the boiler by a neutralizing ammonia solution.  All boiler cleaning waste and rinses were drained to the metal cleaning waste pond.


Clean_desc:
The plant uses an inhibited ammoniated EDTA solution in a foamed state to remove iron oxide deposits from the High Pressure Turbine in the first of a two-stage process.  The second stage uses ammonium bicarbonte, aqua ammonia and gaseuos oxygen in a foamed state for copper oxide removal on the HP Turbine.  A foaming agent was used to generate the chemical foam and at the back end of the turbine an anti-foaming agent was used to collapse the foam back to liquid where it was collected.  Demineralized water is used for the process water and steam rinsing.  Iron stage and copper stage consist of 4500 gallon batches.  An additional 6500 gallons of waste water was from rinsing.  All waste was collected and transported off site for proper disposal.

MCW_Dest_Other_desc:
Transported off site to proper disposal facility as nonhazardous.


Clean_desc:
The plant used filtered water to wash (high pressure, low volume) fly ash from the lower economizer bank located in the backpass of the boiler.

MCW_Cmgld_Other_desc:
Boiler and Turbine Room Sump Discharge to IWTS


Clean_desc:
The plant used filtered water to wash (high pressure, low volume) fly ash from the baskets in the air preheaters.


Clean_desc:
The plant uses ammoniated EDTA to remove iron oxides and copper deposits from the steel tube surfaces of the boiler. A 5% solution of EDTA is used in a two stage process. In the first stage the EDTA removes iron oxides, in the second stage air is blown through the solution to dissolve copper deposits.

MCW_Dest_Other_desc:
Cleaning wastes are pumped to the FDG thickener and incorporated into FGD solids.


Clean_desc:
The plant uses high pressure hoses to wash the back pass of the boiler during a maintenance outage. No chemicals are used.

MCW_Cmgld_Other_desc:
Plant and process wastewaters; coal and limestone pile runoff, eqt. wash station, vehicle wash station

MCW_Onsite_TS_Other_desc:
Equilization basin, clarifier, sand filter


Clean_desc:
The plant can use either steam or high pressure hoses to clean the air preheaters. Information in this questionnarie is for water washes.


Clean_desc:
SE Unit 3 uses raw plant intake water to rinse the outside of the electrostatic precipitator to remove fouling.

MCW_Cmgld_Other_desc:
other ash and coal contact wastewaters for onsite treatment


Clean_desc:
The plant uses ammonium bromate and hydrochloric acid solvent exposures to remove deposits/oxides from the tube surfaces of the boiler. The solvent exposures are followed by a citric acid rinse and a soda ash boilout and rinse.

MCW_Dest_Other_desc:
Cleaning waste is transported in tank trucks to a bulk aqueous waste treatment, storage & disposal facility (TSDF).


Clean_desc:
SE Unit 4 uses raw plant intake water to rinse the outside of the boiler tubes to remove fouling.


Clean_desc:
SE Unit 4 uses raw plant intake water to rinse the air preheaters to remove fouling.

MCW_Cmgld_Other_desc:
other plant metal cleaning wastewater for onsite treatment


Clean_desc:
SE Unit 4 uses pneumatic soot blowing to remove fouling on boiler tubes during boiler operations.


Clean_desc:
SE Unit 4 uses raw plant intake water to rinse the outside of the electrostatic precipitator to remove fouling.

MCW_Cmgld_Other_desc:
other ash and coal contact wastewater for onsite treatment


Clean_desc:
Power wash waterbox surfaces at 3500-5000 psi. Collect liquids and removed solids; separate solids and contain liquids. Decontaminate waterbox surfaces with 1:100 solution of Chlor*Rid liquid concentrate and collect rinsate.

MCW_Dest_Other_desc:
Contain in tank or similar vessel and transfer to offsite licensed waste disposal firm.


Clean_desc:
Raw plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into precipitators sumps, low volume sump and then to the ash pond. Metal cleaned is carbon steel.


Clean_desc:
This process uses aq NH3, NH4HCO3,and NaBrO3 to remove copper deposits on the internal surfaces of the boiler.  The copper removal stage is followed by a water rinse. Then an iron removal stage is performed using HAA, ABF and CH2O2. The iron removal stage is followed by a water rinse, then citric acid rinse to keep the metals in solution which is followed by a water rinse.  Following the iron removal rinses a second copper removal stage is perfomed followed by a water rinse.  The final step is a passivation stage using DSP, TSP, and N2H4 to passivate the metal surfaces.  The passivation is followed by 3 water rinses. With good feedwater treatments, the boiler should be able to last 10+ years before another is necessary. Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is used to wash down the fireside of boiler tubes prior to personnel entering the boiler during each outage.  Since the boiler is a confined space this process is a necessary step in making the space safe for personnel to enter. The waste water is discharged either out of the bottom of the boiler to the base slab floor drains, to the building sump then to the ash pond or it is drained to the economizer hoppers to the ash lift station to the ash pond. Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the precipitator sumps, the low volume sump and then to the ash pond.Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into precipititator sumps, low volume sump and then to the ash pond. Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the precipitator sump, low volume sump and then to the ash pond.Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is used to wash down equipment that process fly ash i.e. precipitators.  This equipment is washed into precipitator sump, low volume sump and then to the ash pond. Metal cleaned is carbon steel.


Clean_desc:
The cleaning uses the AHA, and CH2O2 to remove metal oxide from the boiler internal surfaces of the boiler.  Also added are ABF to remove the silica deposits, and A-300 which is an inhibitor.  After the metals are removed there are two demineralized water rinses.  Between the two water rinses, the second rinse has citric acid to keep pH (3-5) low enough to keep metal oxides in solution.  After the third rinse the ammonia and hydrazine are added and heated to cause a new protective passive magnetite file to form.  With good feedwater treatments, the boiler should be able to last 10+ years before another is necessary. Metal cleaned is carbon steel.


Clean_desc:
Raw plant intake water is sprayed into the air heater to wash ash off the baskets.  The water and ash goes to the precipitator sumps, low volume sump and then to the ash pond.Metal cleaned is carbon steel.


Clean_desc:
High purity steam is blown into various sections of the boiler to mitigate slag formation and prevent ash buildup.  This steam is sprayed directly into the boiler and subsequent ash and steam is carried out of the boiler with the flue gases.  Any particles that are heavy enough to fall will be collected with in the bottom ash pit and transferred to the ash pond.Metal cleaned is carbon steel.


Clean_desc:
The plant uses a mixture of hydroxyacetic and formic acids to remove and iron oxides from the internal tube surfaces of the boiler. The hydroxyacetic and formic acids are diluted to a 6.0% solution and used for cleaning in a one stage process. The solution is circulated within the boiler until all iron oxides are dissolved.

MCW_Dest_Other_desc:
Wastewater is collected in a tank and then sent offsite for disposal


MCW_Dest_Other_desc:
Discharged to pond for treatment and then discharged to surface water via Outfall 001.


Clean_desc:
In 2006, the plant used a 2-Stage Chemical Cleaning Process which consist of a 1st Stage Cleaning step using a combination of Aqueous Ammonia (Amm), Sodium Bromate (NaBr), & Ammonium BiCarbonate (ABC) to remove copper deposits.  The 2nd Stage Cleaning Step consisted of a combination of thiourea, ABF, hydrocholric acid to remove any remaining copper deposits and the iron oxides from the internal steel surfaces of the boiler (20,400 gallons Cleaning Volume).   All boiler waste & water rinses were drained to the ash pond.

MCW_Onsite_TS_Other_desc:
Boiler Cleaning Waste was retained within ash pond for 5+ days before discharge.

MCW_Dest_Other_desc:
Boiler Cleaning Waste was retained within ash pond for 5+ days before discharge.  Cleaning chemicals, boiler solids, & metals react with flyash & settle out in ash pond.  Co-mingled water leaves ash pond in normal pond effluent


Clean_desc:
The frequency of compressor washes is based on the number of operating hours on the CT and is typically conducted annually.  Compressor washes are conducted using a commercially available detergent (ZOK 27).  ZOK 27 is diluted on a 1:4 ratio with demineralized water from the plant water treatment plant.  Wash water is collected and dispostioned through an off-site vendor and is not discharged to the plant wastewater treatment system.


Clean_desc:
The plant uses Fyrewash F2 industrial cleaner, sold by Rochem Technical Services, to periodically remove atmospheric contaminants from the CT compressor blades.  The Fyrewash is diluted with demin water to the ratio of 25 parts water to 1 part cleaner.  The cleaning solution is sprayed onto rotating blades, allowed to soak and then rinsed repeatedly from the compressor.  The effluent is collected in a dedicated sump. The waterwash drain sump has its contents removed periodically by a waste removal company. A copy of the Fyrewash MSDS (Material Safety Data Sheet) in included as Attachment A.

MCW_Dest_Other_desc:
Hauled off site by an environmental waste contractor for treatment and final disposal


Clean_desc:
The plant uses ammoniated EDTA solution to remove copper and iron oxides deposits from the steel tube surfaces of the boiler.  The ammoniated EDTA solution is diluted to a concentration of 5000 ppm and a pH of 8-9.4 and used for cleaning.  The solution is added to the boiler and heated to 300 degrees.  Heating and cooling cycles are repeated from 270 to 305 degrees to create a thermal circulation.  These cycles are repeated until the desired copper and iron levels are achieved.  The boiler tubes are rinsed and drained 2-3 times after cleaning.

MCW_Dest_Other_desc:
Wastewater treated onsite by 3rd party and waste treated/disposed off-site by same third party.


Clean_desc:
The plant uses dry CO2 pellet blasting to clean the low pressure section of the HRSG.  This produces a dry compound that is vacuumed out and not coomingled with other waste.  The plant uses a Combustion Turbine cleaning solution to clean the compressor section of the Combustion Turbine typically (1) time per year.  This effluent is captured in a tank and shipped off-site.  This effluent is not discharged via the NPDES permit.


Clean_desc:
The cleaning procedure consists of a multi-stage process consisting of an initial copper removal stage using sodium bromate, aqua ammonia and ammonium bicarbonate; followed by an iron-oxide removal stage consisting of the addition of ammoniated EDTA (39.5% active) along with sodium nitrite for metal passivation.


Clean_desc:
Water passed through air heaters, collected and stored/treated in the metal cleaning waste pond.  Air heaters are cleaned until the rinse water is pH 6.0 or greater.


Clean_desc:
Boiler uses steam sootblowers for on-line fireside boiler tube cleaning.


Clean_desc:
Demineralized water with soap solution (ZOK 27) is injected into the gas turbine compressor.  The unit is rinsed with demineralized water until the rinse water conductivity is less then 10 micromhos.


Clean_desc:
Demineralizer water is injected into the gas turbine compressor for on-line water wash.


Clean_desc:
Boiler uses steam sootblowers to provide on-line fireside boiler tube cleaning.


Clean_desc:
Water passed through air heaters, collected and stored/treated in metal cleaning waste pond.  Air heaters are rinsed until rinse water is pH 6.0 or higher.


Clean_desc:
The plant utilized a four-step cleaning process to remove deposits from the steam generator metal surfaces.  The first step was a complete rinsing of the system with rinse waters at pH>10 and 1.5 ppm hydrazine.  Step 2 was for copper removal using diluted EDTA, EDA, ammonium hydroxide, and hydrogen peroxide, followed by two rinses at pH> 9.5 s.u..  Step 3 involved iron removal with a solution of EDTA, hydrazine, CCI-801, DMA, and ammonium hydroxide, followed by two rinses at pH> 9.5 s.u..  Step 4 was similar to Step 2, including two final rinses at pH>9.5 s.u..  pH adjustments were achieved with ammonium hydroxide.


Clean_desc:
The plant uses a sufactant detergent (ZOK 27) solution to clean both the combustion and compressor sections.  The detergent is mixed with treated service water to make a 10% solution.  Approximately 500 gallons of this solution are used to wash each section followed by an equal amount of clean rinse water generating 1000 gallons per section total wastewater.  This wastewater is collected in drain tanks from which the wastewater is removed and disposed off-site as non-hazardous liquid waste per RCRA requirements.

MCW_Dest_Other_desc:
Collected and disposed off-site as non-hazardous waste


MCW_Dest_Other_desc:
Evaporated when the boiler is returned to service.


Clean_desc:
House service water is pumped through the air heaters to remove residual pluggage.


Clean_desc:
Steam is used to clean heat transfer surfaces of the boiler.


Clean_desc:
The plant uses an ammoniated EDTA solution to remove copper and iron oxide deposits from the boiler waterwall tubes in a two stage process.  The first stage uses ammoniated EDTA at 200F circulated through the boiler to remove iron oxides. The second stage uses the same solvent with the addition of ammonia and gaseous oxygen dropping the temperature to 160F for copper oxide removal.


Clean_desc:
The plant routes each individual air heater tube with a high pressure water wand.


Clean_desc:
The plant routes each individual boiler air heater tube with a high pressure water wand.


Clean_desc:
The plant uses a water deluge cleaning on SE Unit ID 3 air heater.


Clean_desc:
The air heater plugs with ash over time during operation. Approximately every 5 years, the air heater must be cleaned. The air heater wheels are individually cleaned by spraying high pressure water through the wheel from top to bottom to remove the hardened ash imbedded in the wheel.


Clean_desc:
Soot blowers use high pressure steam as a cleaning medium and rotate a nozzle as the lance is inserted into the boiler.


Clean_desc:
Fly ash on the boiler internal surfaces in the convection pass is washed out with a firehose and service water through the economizer hoppers. The water and collected fly ash goes through the bottom ash transport system.


Clean_desc:
Stage 1 - Ammonium bicarbonate/CUPROX solution is used for the removal of copper metal (elemental) and copper oxides. Stage 2 - water tinse. Stage 3 - Hydrochloric acid/thiourea solution to remove iron deposits and any additioanl copper. Stage 4- water rinse. Stage 5 - Neutralization/passivation - to passivate/neutralize surfaces.


