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Site Number: |
059B |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
4/6/2016 |
Response Authority: |
CERCLA |
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Response Type: |
PRP Oversight |
Response Lead: |
PRP |
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Incident Category: |
Removal Action |
NPL Status: |
NPL |
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Operable Unit: |
5 |
Mobilization Date: |
8/1/2016 |
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Start Date: |
8/1/2016 |
Demob Date: |
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Completion Date: |
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CERCLIS ID: |
MID006007306 |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
DEQ |
FPN#: |
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Reimbursable Account #: |
059B |
1.1.1 Incident Category
Time Critical Removal Action - PRP Oversight
1.1.2 Site Description
See PolRep #1
1.1.2.1 Location
See PolRep #1
1.1.2.2 Description of Threat
See PolRep #1
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
See PolRep #1
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2.1.1 Narrative
Removal operations in BRSAs 7 & 8 resumed on March 12 after record high water levels receded. Removal of the temporary WCS resumed from the south side of the river.
2.1.2 Response Actions During Reporting Period
BRSA 7
- Additional excavation of contaminated soils continued with confirmation results received in the riverbank grid shown in Table 1 below. There are 63 total river bank grids in BRSA 7, with each grid consisting of approximately 50 feet of riverbank. There are 3 stream tubes, with each varying in size. The target clean-up goal in riverbank soils is 5 mg/kg total PCBs and in-stream sediments is 1mg/kg total PCBs;
- Transportation and disposal of contaminated soils & sediments (utilizing the staging pad in BRSA 6); and
- Maintenance and repair of stream tube protection measures and access roads.
BRSA 7
RIVERBANK GRID |
TOTAL ESTIMATED
EXCAVATION DEPTH (in) |
FINAL
CONFIRMATION RESULT (Total PCBs, mg/kg) |
63 |
12 |
< 0.036 |
Table 1. BRSA 7 Riverbank Grid Confirmation Sampling Results |
General Table Notes: Confirmatory sampling takes place immediately following excavation of contaminated soils and/or sediments in accordance with procedures outlined in the FSP and the TM for BRSAs 7 & 8. Both documents can be found in the ‘Documents' Section of the project website. Stream tube grids are numbered consistent with the riverbank grid they are located adjacent to. A figure showing the location of both (preliminary) riverbank grids and stream tubes can be found on Figure 1-7 of the BRSA 7 & 8 TM.
BRSA 8
- Excavation of contaminated soils and sediments continues, with confirmation results received in riverbank grids and stream tubes shown in Tables 2 & 3 below. There are 63 total river bank grids in BRSA 8, with each grid consisting of approximately 50 lineal feet of riverbank. There are 3 stream tubes, with each stream tube varying in size. The target clean-up goal in the riverbank soils is 5 mg/kg total PCBs and in-stream sediments is 1mg/kg total PCBs;
- Transportation and disposal of contaminated soils & sediments (utilizing the staging pad in BRSA 9); and
- Maintenance and repair of stream tube protection measures and access roads.
BRSA 8
RIVERBANK GRID |
TOTAL ESTIMATED
EXCAVATION DEPTH (in) |
FINAL
CONFIRMATION RESULT (Total PCBs, mg/kg) |
26 |
48 |
0.36 |
27 |
48 |
< 0.033 |
28 |
48 |
< 0.037 |
29 |
48 |
0.15 |
30 |
48 |
< 0.067 |
Table 2. BRSA 8 Riverbank Grid Confirmation Sampling Results |
BRSA 8
STREAM TUBE GRID |
TOTAL ESTIMATED
EXCAVATION DEPTH (in) |
FINAL
CONFIRMATION RESULT (Total PCBs, mg/kg) |
33 |
12 |
< 0.079 |
34 |
12 |
< 0.067 |
Table 3. BRSA 8 Stream Tube Grid Confirmation Sampling Results |
General Table Notes: Confirmatory sampling takes place immediately following excavation of contaminated soils and/or sediments in accordance with procedures outlined in the FSP and the TM for BRSAs 7 & 8. Both documents can be found in the ‘Documents' Section of the project website. Stream tube grids are numbered consistent with the riverbank grid they are located adjacent to. A figure showing the location of both (preliminary) riverbank grids and stream tubes can be found on Figure 1-8 of the BRSA 7 & 8 TM.
OVERALL SITE
- Transport/disposal of approximately 2120 tons of excavated soils to an EPA-approved landfill facility (see Section 2.1.4);
- Particulate monitoring (PM10) around the site perimeter (when feasible) with no sustained exceedance off site of particulates above the action level of 1.5 mg/m3;
- Turbidity monitoring utilizing a hand held monitoring instrument with no sustained exceedances;
- Treatment of approximately 13,280 gallons of contact water from contaminated grids and contaminated soils staging pads in on-site WWTPs located in BRSAs 6 & 9 (see Section 2.1.4). Sampling results from both WWTPs continue to show non-detect levels for PCBs in the treated discharge;
- Temporary WCS removal activities resumed on the south bank of the river as weather conditions improved and high water levels receded (see photo); and
- Bank re-grading and restoration continues on the north bank of the river at the temporary WCS (see photo). The temporary WCS corridor is being restored in consultation MDEQ & MDNR (see photo) pursuant to an approved 'Application/Permit to Use State Land.'
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
See PolRep #1
2.1.4 Progress Metrics
Both quantities during the reporting period ('Quantity' column) and totals to date ('Total' column) are included in the table.
Waste Stream |
Medium |
Quantity |
Total |
Manifest # |
Treatment |
Disposal |
Cardboard |
solid |
20 lbs |
1270 lbs |
NA |
recycling |
Otsego Recycling Center
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Plastic |
solid |
10 lbs |
565 lbs |
NA |
recycling |
Otsego Recycling Center |
Steel |
solid |
0 lbs |
27,560 lbs |
various |
recycling |
Broken Arrow Recycling |
Contaminated soil (< 50 ppm* PCBs) |
solid |
2120 tons (est) |
44,282 tons(est) |
various |
disposal |
Republic Ottawa County Farms Landfill, Coopersville, MI |
Contaminated soil
(> 50 ppm* PCBs) |
solid |
0 tons |
103.91 tons |
various |
disposal |
US Ecology Michigan,
Belleville, MI |
Contact water |
liquid |
13,280 gal |
1,847,836 gal |
NA |
on-site WWTP |
On-site reuse/discharge to Kalamazoo River |
*Note: 1 ppm = 1 mg/kg
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2.2.1 Anticipated Activities
During the next reporting period, the following activities are expected to occur:
BRSA 6
- Staging pad and WWTP operations to support removal operations in BRSA 7.
BRSA 7
- Access road construction along riverbanks;
- Continue excavation of contaminated riverbank soils and in-stream sediments;
- Treat contact water from contaminated grids, stream tubes and staging pad (located in BRSA 6); and
- Transport contaminated soils & sediments for disposal.
BRSA 8
- Continue excavation of contaminated riverbank soils and in-stream sediments;
- Treat contact water from contaminated grids, stream tubes and staging pad (located in BRSA 9); and
- Transport contaminated soils & sediments for disposal.
BRSA 9
- Staging pad and WWTP operations to support removal operations in BRSA 8.
SITEWIDE
- Operate
dust and turbidity control/monitoring systems (as feasible & necessary);
- Repair and re-construction of riverbanks and restoration planting in all BRSAs impacted by record high water levels; and
- Continue removal of temporary WCS and restoration of surrounding area.
2.2.1.1 Planned Response Activities
See Sections 2.2.1 & 2.2.1.2
2.2.1.2 Administrative Activities / Next Steps
- MDNR issued an updated 'Application/Permit to Use State Land' for riverbank and channel restoration activities in the area surrounding the temporary WCS on March 15.
2.2.2 Issues
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On average, the following personnel were present on site during the reporting period:
USEPA - 1
START - 1
MDNR - 1
MDEQ - 1
Envirocon - 42
Milbocker & Sons, Inc. - 4
Spicer Group, Inc. - 1
AMEC-FW
- 2
TOTAL: 53
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