Waste Site Cleanup & Reuse in New England
Atlas Tack Corporation Superfund Site
Weekly Remedial Activities Update
Report # 7: August 21 - August 25, 2006
1. ACTIVITIES PERFORMED DURING THE WEEK OF AUGUST 21 - AUGUST 25
- Completed construction of the stockpile staging area
- Completed the installation of northern and eastern haul roads
- Installed “Truck Crossing” signs along Tripp and Adams Street.
- Installed additional section of silt fence along the excavation limits of C.I.D.
- Continued to excavate C.I.D.
- Began to dewater the C.I.D. excavation
- Continued to screen soils and remove oversize debris from the soils excavated from C.I.D.
- Placed screened soils in the stockpile staging area for off-site transport
- Installed earthen berm along the eastern limit of C.I.D.
- Along the toe of the Hurricane Barrier, keyed-in sand bags along the eastern limit of the covered berm
- Completed the stockpile staging area water collection system
- Provided survey of post excavation limits in the C.I.D.
- Continued to water the roads for dust control
2. PROJECTED ACTIVITIES FOR THE WEEK OF AUGUST 28 - SEPTEMBER 1
- Continue to excavate Commercial and Industrial Debris Area (C.I.D.); remaining cells and haul road area
- 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
- 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
- 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 #7: 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)|
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