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Waste Site Cleanup & Reuse in New England

Atlas Tack Corporation Superfund Site
Weekly Remedial Activities Update
Report # 6: August 14 – August 18, 2006

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1. ACTIVITIES PERFORMED DURING THE WEEK OF AUGUST 14 - AUGUST 18

  • Completed construction of the stockpile staging area
  • Installed on site haul roads
  • Cleared trees in brush in C.I.D.
  • Continued with stockpile maintenance activities
  • Completed the excavation of Grid G and began to backfill
  • Screened stockpiled soils from G to remove debris
  • Established survey layout and existing topographic conditions in C.I.D.
  • Continued to water the roads for dust control

2. PROJECTED ACTIVITIES FOR THE WEEK OF AUGUST 21 - AUGUST 25

  • Continue to backfill Grid G located in the Commercial Area
  • Excavate Commercial and Industrial Debris Area (C.I.D.)
  • Collect confirmatory soil samples from excavations in C.I.D.
  • Collect waste characterization soil samples from soils originating from C.I.D. for off site, landfill, disposal profiling
  • Screen soils originating from C.I.D., segregate oversize debris
  • Place soils in the stockpile staging area
  • Complete haul road construction
  • Continue to water the haul roads for dust control
  • Continue to collect pre and post excavation survey data of the excavations
  • 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.

Weekly Dust Monitoring Summary
Week #6: 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)
8/10/2006 0 0 45 4 18
8/11/2006 0 0 33 32 0
8/14/2006 0 0 25 0 0
8/15/2006 Precip Precip Precip Precip Precip
8/16/2006 0 0 1* 2 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

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