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Waste Site Cleanup & Reuse in New England

Atlas Tack Corporation Superfund Site
Weekly Remedial Activities Update
Report # 8: August 28 - September 1, 2006

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1. ACTIVITIES PERFORMED DURING THE WEEK OF AUGUST 28 - SEPTEMBER 1

  • Completed the installation of the eastern haul road
  • Continued to excavate the Commercial and Industrial Debris Area (C.I.D.)
  • Continued water management activities
  • Continued to screen soils and remove oversize debris from the soils excavated from the C.I.D.
  • Placed screened soils in the stockpile staging area for off-site transport
  • Consolidated soils in the stockpile staging area per appropriate waste stream
  • Completed installation of the earthen berm along the toe of the Hurricane Barrier
  • Provided survey of post excavation limits in the C.I.D.
  • Continued to collect pre- and post-excavation survey data of the excavations
  • Continued to water the roads for dust control
  • Continued with air monitoring program

2. PROJECTED ACTIVITIES FOR THE WEEK OF SEPTEMBER 4 - SEPTEMBER 8

  • Complete the proposed excavation of the C.I.D.
  • Collect confirmatory soil samples from excavations in the C.I.D.
  • Collect waste characterization soil samples from soils originating from the C.I.D. for off site disposal
  • Continue to screen soils originating from C.I.D.; segregating oversize debris by the appropriate waste stream (i.e. rock debris, concrete, wood, root balls, scrap metal, tires, >1-ft rock)
  • Place soils in the stockpile staging area
  • Install clean fill backfill to access re-dig locations in the C.I.D.
  • Finalize T&D plan and generate disposal approval package
  • 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 24 August – 30 August 2006 can be reviewed in the attached table.

Weekly Dust Monitoring Summary
Week #8: 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)
8/24/2006 0 0 0 55 0
8/25/2006 Precip Precip Precip Precip Precip
8/28/2006 Precip Precip Precip Precip Precip
8/29/2006 Precip Precip Precip Precip Precip
8/30/2006 0 0 0 0 0

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 # 8 - SUMMARY
TO DATE
ACTIVITIES ESTIMATED QUANTITY ESTIMATED QUANTITY
C.I.D. Excavation 1,463 CY 5,190 CY
C.I.D. Water Handling 180,000 GAL 240,000 GAL
Soil Screening 1,500 CY 3,297 CY
Soil placed in Stockpile Staging Area 2,500 CY *6,655 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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