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Waste Site Cleanup & Reuse in New England

Atlas Tack Corporation Superfund Site
Weekly Remedial Activities Update
Report # 9: September 4 - September 8, 2006

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1. ACTIVITIES PERFORMED DURING THE WEEK OF SEPTEMBER 4 - SEPTEMBER 8

  • Observed labor Day Holiday
  • Backfilled 1,128 tons of clean fill in the Commercial and Industrial Debris Area (C.I.D.) for access to the areas needing further excavation
  • Performed first round of re-excavations in the C.I.D.
  • Continued water management activities
  • Continued to screen soils and remove oversize debris excavated from the C.I.D.
  • Placed screened soils in the stockpile staging area for off-site transport
  • Decontaminated large boulders removed from C.I.D.
  • Consolidated soils in the stockpile staging area per appropriate waste stream
  • Provided survey of post excavation limits in the C.I.D.
  • Began pre-excavation survey of the East Fill Area
  • Continued to collect post excavation survey data of the re-excavation locations
  • Removed existing crushed sea shell sub base along the entrance of Adams Street and replaced with pavement
  • Continued to water the roads for dust control
  • Continued with air monitoring program

2. PROJECTED ACTIVITIES FOR THE WEEK OF SEPTEMBER 11 - SEPTEMBER 15

  • Commence COMM-97 soil (non-hazardous) transport and disposal (mid week)
  • Commence East Fill excavation activities
  • Collect confirmatory soil samples from excavations in the East Fill Area
  • Collect waste characterization soil samples from soils originating from East Fill excavation for off site, landfill, disposal profiling
  • Screen soils originating from East Fill Area
  • Place soils in the stockpile staging area
  • Continue to water the haul roads for dust control
  • Continue to collect pre and post excavation survey data of the excavations
  • Continue water handling activities Continue with air monitoring program

3. AIR MONITORING INFORMATION

WESTON monitored for particulate (dust) during intrusive activities performed during this reporting period. WESTON recognizes EPA’s level of concern for “PM10” to caution sensitive groups, including children, the elderly, and people with heart or lung disease, about exposure to coarse dust particles. The PM10 level of concern for sensitive groups is 150 µg/m3 for 24-hour average exposure.

Perimeter Air Monitoring is performed at up to (6) locations throughout a given work day. Readings are collected at 60 second intervals throughout the day and reported as a daily average.

If exceedances are identified, an increased effort of engineering controls (water suppression) will be utilized to adhere to the PM10 level of concern. If engineering controls appear to be inadequate, any dust generating activities will stop. Current dust control practices will be re-evaluated until concentrations are reduced to below the PM10 standard.

Results for 31 August – 6 September 2006 can be reviewed in the table below. Reporting periods begin Thursday of previous week (Week # 8) to Wednesday of this week (Week # 9). This report is generated on Thursday of each week.

Weekly Dust Monitoring Summary
Week #9: Results for Thursday through Wednesday**

The EPA's PM10 level of concern for sensitive groups is 150 µg/m3 for 24-hour average exposure

Date Pleasant Street (µg/m3) Adams Street (µg/m3) Tripp Street (µg/m3) Hurricane Barrier (µg/m3) Church Street 2 (µg/m3)
8/31/2006 0 0 0 0 0
9/1/2006 1 0 0 3 1
9/4/2006 Holiday Holiday Holiday Holiday Holiday
9/5/2006 0 0 0 0 0
9/6/2006 Precip Precip Precip Precip Precip

Notes:
All readings reflect the daily average calculated over the course of the workday.
All readings collected with a Thermo Electron PDR 1000.
NSC: No sampling conducted; No intrusive work conducted in that area.
Precip: No sampling conducted due to precipitation.
*: Monitoring conducted over 24-hour period.
**: No work and air monitoring occurs on weekend days

4. QUANTITY SUMMARY

Report # 9 - SUMMARY
TO DATE
ACTIVITIES ESTIMATED QUANTITY ESTIMATED QUANTITY
C.I.D. Excavation 884 CY 6,074 CY
C.I.D. Water Handling 120,000 GAL 360,000 GAL
Soil Screening 3,074 CY 6,371 CY
Soil placed in Stockpile Staging Area 2,074 CY *8,729 CY

Notes:
CY = volume of soil/debris in cubic yards
GAL = gallons of water

* Reported volume includes 2,655 CY of soils excavated from Commercial Area Excavation

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