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Waste Site Cleanup & Reuse in New England

Atlas Tack Corporation Superfund Site
Weekly Demolition/Cleanup Activities Update

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Projected Activities for the Week of January 16 -- January 20

  • Complete clearing activity in Phase II area.
  • Begin installation of silt fence in Phase II area.
  • Continue excavation of contaminated soil from Pit # 2
  • Continue dust monitoring at all four stations during site activity

Activities Performed During the Week of January 9 -- January 13

  • Mobilize equipment and begin clearing activity in Phase II area.
  • Continue dust monitoring during periods of site activity.

Air Monitoring Information

Charter Environmental continues to monitor the four sampling locations during intrusive / destructive site activities during the 8 -hour day for dust particulates.

The four perimeter sampling stations are set up in the following locations:

Station 1 -- Site fence gate on Pleasant Street
Station 2 -- Site fence on east end of Church Street
Station 3 -- Site fence on bike path at Tripp Street
Station 4 -- Site fence at bike path near Adams Street

The dust particulate and asbestos sampling results recorded at each station every hour in a monitoring log. These results are compared to the action levels established for each parameter. These action levels are concentrations at which it is deemed unsafe and work would have to stop.

Results of the air monitoring data has shown that exposure of unsafe conditions to workers in the exclusion zone and to the public is well below the actions levels.

Dust Particulate Monitoring -- The National Ambient Air Quality standard for particulates is 150 micrograms per cubic meter (µg/m3) over an average of 24 hours. This value will be used, however, for a one hour period. Heavy metal presence is factored into determination of this action level. The average levels recorded at these locations range from 0 to 0.052 (µg/m3), with most readings valued at zero. The maximum level for this week is also recorded and ranges from 0.003 to 1.639 (µg/m3).

Asbestos Monitoring - Asbestos monitoring has been discontinued. All abatement measures have been completed, therefore monitoring is no longer required.

Actual Data - Below are tables showing the average and maximum dust particulate readings taken at each sampling location during the week of January 9 through January 13.

Dust Particulate Results
Dust Particulate Sampling Location 1 - Pleasant Street Gate

Readings are recorded as micrograms per cubic meter (µg/m3)

Time Monday,
1/9
Tuesday,
1/10
Wednesday,
1/11
Thursday,
1/12
Friday,
1/13
Average 0.000 Rain 0.000 0.008 0.000
Maximum 0.105 Rain 0.011 0.120 0.003
 
Dust Particulate Sampling Location 2 - Site Fence at East End of Church Street

Readings are recorded as micrograms per cubic meter (µg/m3)

Time Monday,
1/9
Tuesday,
1/10
Wednesday,
1/11
Thursday,
1/12
Friday,
1/13
Average 0.000 Rain 0.000 0.002 0.010
Maximum 0.011 Rain 0.022 1.044 0.802
 
Dust Particulate Sampling Location 3 - Site Fence at Bike Path/Tripp Street

Readings are recorded as micrograms per cubic meter (µg/m3)

Time Monday,
1/9
Tuesday,
1/10
Wednesday,
1/11
Thursday,
1/12
Friday,
1/13
Average 0.000 Rain 0.001 0.014 0.012
Maximum 0.020 Rain 0.066 0.820 0.022
 
Dust Particulate Sampling Location 4 - Site Fence at Bike Path/Adams Street

Readings are recorded as micrograms per cubic meter (µg/m3)

Time Monday,
1/9
Tuesday,
1/10
Wednesday,
1/11
Thursday,
1/12
Friday,
1/13
Average 0.000 Rain 0.010 0.011 0.052
Maximum 0.640 Rain 1.639 0.105 0.210

Notes: NSC – No sampling conducted on Tuesday 1/10 due to rain.

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