2.1.1 Narrative
The GC is nearing completion of restoration activities in BRSA 1. Contaminated soils/sediments remaining on site were loaded out for transport & disposal at EPA approved landfill facilities. Decommissioning and demobilization of heavy equipment, supplies and materials continue in BRSA 1, with completion expected in the next few weeks.
2.1.2 Response Actions During Reporting Period
The following activities took place during the reporting period:
- Reconstruction / restoration / inspection of excavated grids in BRSA 1, including plantings (see attached photos);
- Transport / disposal of approximately 945.8 tons of excavated sediments/soils with PCB levels less than 50 ppm to an EPA-approved landfill facility. A total of 7120.64 tons of excavated sediments/soils have been transported from BRSA 1 for disposal to date;
- Transport / disposal of approximately 103.91 tons on excavated sediments/soils with PCB levels exceeding 50 ppm to an EPA-approved landfill facility;
- Treatment of contact water from contaminated grids and contaminated soils staging pad in the on site WWTP. Approximately 39,349 gallons were treated during the reporting period. A total of approximately 303,075 gallons have been treated since the start of the project. Sampling results confirmed non-detect levels for total PCBs in treated water;
- Dismantlement and demobilization of the WWTP from the BRSA 1 staging area. This unit will not be utilized over the winter due to weather considerations;
- Completion of investigatory geotechnical borings to determine the stability of slopes in BRSA 7 (see attached photo);
- Surveying / staking of potential support / staging areas for BRSAs 3-9; and
- Daily particulate monitoring (PM10) around the perimeter of BRSA 1 with no detections off site of particulates above the action level of 1.5 mg/m3.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
See PolRep #1
2.1.4 Progress Metrics
The following materials were managed during the reporting period. Totals to date are also included in the table below.
Waste Stream |
Medium |
Quantity |
Total |
Manifest # |
Treatment |
Disposal |
Cardboard |
solid |
20 lbs |
430 lbs |
NA |
recycling |
Otsego Recycling Center
|
Plastic |
solid |
10 lbs |
130 lbs |
NA |
recycling |
Otsego Recycling Center |
Steel |
solid |
100 lbs |
4670 lbs |
various |
recycling |
Broken Arrow Recycling |
Contaminated soil (< 50 ppm* PCBs) |
solid |
945.80 tons |
7120.64 tons |
various |
disposal |
Republic Ottawa County Farms Landfill, Coopersville, MI |
Contaminated soil
(> 50 ppm* PCBs) |
solid |
103.91 tons |
103.91 tons |
various |
disposal |
US Ecology Michigan,
Belleville, MI |
Contact water |
liquid |
39,349 gal |
303,075 gal |
NA |
on-site WWTP |
On-site reuse/discharge to Kalamazoo River |
Note: 1 ppm = 1 mg/kg
|