U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Otsego Township Dam Area - Removal Polrep
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region V
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Subject:
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POLREP #20
Progress
Otsego Township Dam Area
059B
Otsego Township, MI
Latitude: 42.4601694 Longitude: -85.7199333
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To:
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Douglas Ballotti, EPA
Samuel Borries, EPA
Mike Ribordy, EPA
Jim Saric, EPA
Mark Mills, MDNR
Polly Synk, MDAG
Cyndi Trobeck, City of Otsego
Valincia Darby, U.S. DOI
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From:
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Paul Ruesch, OSC
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Date:
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7/21/2017
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Reporting Period:
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7/8/2017 - 7/21/2017
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1. Introduction
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1.1 Background
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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 |
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Response Authority: |
CERCLA |
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Response Type: |
PRP Oversight |
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Response Lead: |
PRP |
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Incident Category: |
Removal Action |
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NPL Status: |
NPL |
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Operable Unit: |
5 |
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Mobilization Date: |
8/1/2016 |
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Start Date: |
8/1/2016 |
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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 |
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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. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
Excavation of contaminated riverbank soils and in-stream sediments continues in BRSA 4 along with riverbank restoration. The staging area continues under construction in BRSA 6.
2.1.2 Response Actions During Reporting Period
BRSA 3
- Demobilization of the WWTP from staging area and relocation into BRSA 6 staging area.
BRSA 4
- Excavation of contaminated soils continues with excavation completed and confirmation results received in Grids 29-38. There are 50 total grids in BRSA 4, with each grid consisting of approximately 50 lineal feet of riverbank. The target clean-up goal in the riverbank soils is 5 mg/kg total PCBs;
- Began removal of sheet piling installed to facilitate excavation of stream tube adjacent to grids 15-24 (see photo); and
- Preparations for excavation of contaminated in-stream sediments are complete for the second 'stream tube' in BRSA 4, which is located within the river channel immediately adjacent to Grids 43-50. The target clean-up goal for in-stream sediments is 1 mg/kg total PCBs.
Estimated excavation depths and confirmation sampling results are found in the table below for riverbank grids (Table 1):
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BRSA 4
RIVERBANK
GRID
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TOTAL ESTIMATED EXCAVATION DEPTH (in)
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FINAL
CONFIRMATION TOTAL PCBs RESULT (mg/kg)
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29
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36
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0.30
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30
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36
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0.28
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31
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24
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<0.069
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32
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24
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0.61
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33
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24
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<0.060
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34
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24
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<0.067
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35
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24
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0.0851
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36
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24
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0.071
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37
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24
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<0.069
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38
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12
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0.16
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Table 1. BRSA 4
Riverbank Grid Confirmatory Sampling Results
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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 4, 5, 6 & 9. 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 riverbank grids and stream tubes can be found on Figure 8 of the BRSA 4, 5, 6 & 9 TM.
- Transport/disposal of approximately 1,629 tons of excavated soils to an EPA-approved landfill facility (see Section 2.1.4).
BRSA 6
- Continued construction of staging area and stabilization pad (see photos);
- Mobilization of WWTP into staging area; and
- Removed abutment at old bridge crossing.
OVERALL SITE
- Daily particulate monitoring (PM10) around the site perimeter with no sustained exceedance off site of particulates above the action level of 1.5 mg/m3;
- Turbidity control measures and monitoring in Kalamazoo River around the BRSA 3 - 9 excavation area (1 upstream monitor and 2 downstream monitors), with no sustained exceedance of the action level of 50 NTUs above upstream levels;
- Treatment of approximately 90,318 gallons of contact water from contaminated grids and contaminated soils staging pads in the on-site WWTP located in BRSA 4 (see Section 2.1.4). Sampling results from the WWTP continues to confirm non-detect levels for total PCBs in treated water; and
- Monitoring of the temporary WCS.
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 |
800 lbs |
NA |
recycling |
Otsego Recycling Center
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| Plastic |
solid |
10 lbs |
285 lbs |
NA |
recycling |
Otsego Recycling Center |
| Steel |
solid |
10 lbs |
9250 lbs |
various |
recycling |
Broken Arrow Recycling |
| Contaminated soil (< 50 ppm* PCBs) |
solid |
1,629 tons (est) |
13,813 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 |
90,318 gal |
594,930 gal |
NA |
on-site WWTP |
On-site reuse/discharge to Kalamazoo River |
*Note: 1 ppm = 1 mg/kg
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2.2 Planning Section
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2.2.1 Anticipated Activities
During the next reporting period, the following activities are expected to occur:
BRSA 4
- Complete excavation of contaminated riverbank soils and in-stream sediments;
- Continue restoration of excavated river bank and in-stream sediment areas;
- Treat contact water from contaminated grids and contaminated soils staging pad; and
- Transport contaminated soils and sediments for disposal.
BRSA 6
- Complete construction of staging area;
- Complete construction of stabilization pad;
- Construct and test WWTP; and
- Commence excavation of contaminated riverbank soils and in-stream sediments.
SITEWIDE
- Operate
dust and turbidity control/monitoring systems; and
- Maintain/monitor temporary WCS.
2.2.1.1 Planned Response Activities
See Sections 2.2.1 & 2.2.1.2
2.2.1.2 Administrative Activities / Next Steps
- All comments on draft TM for BRSAs 7 & 8 have been received and are being consolidated into a single, consolidated response to AMEC-FW.
2.2.2 Issues
Heavy rains and flooding delayed progress during the reporting period.
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2.3 Logistics Section
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See PolRep #1
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2.4 Finance Section
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No information available at this time.
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2.5 Other Command Staff
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2.5.1 Safety Officer
A safety meeting is held prior to work start each day. The meeting is led by on-site safety officer(s) from Envirocon & AMEC-FW.
2.5.2 Liaison Officer
2.5.3 Information Officer
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3. Participating Entities
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3.1 Unified Command
3.2 Cooperating Agencies
See PolRep #1
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4. Personnel On Site
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On average, the following personnel were present on site during the reporting period:
US EPA - 1
START - 1
Michigan DNR - 1
Michigan DEQ - 1
Envirocon: 35
Milbocker & Sons, Inc.: 4
AMEC-FW: 2
Spicer Group: 1
TOTAL: 46
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5. Definition of Terms
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AMEC-FW AMEC Foster Wheeler
BRSA Bank Removal and Stabilization Area
FSP Field Sampling Plan
GC General Contractor
mg/kg milligrams per kilogram
MDEQ Michigan Department of Environmental Quality
MDNR Michigan Department of Natural Resources
MDOT Michigan Department of Transportation
OSC On Scene Coordinator
PCBs Poly-chlorinated biphenyls
PolRep Pollution Report
ppm parts per million
PRP Potentially Responsible Party
START Superfund Technical Assessment & Response Team (US EPA contractor)
TM Technical Memorandum
US EPA United States Environmental Protection Agency
WCS Water Control Structure
WWTP Waste Water Treatment Plant
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6. Additional sources of information
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6.1 Internet location of additional information/report
http://www.epaosc.org/otsegodam
www.epa.gov/superfund/allied-paper-kalamazoo
6.2 Reporting Schedule
The next PolRep will be generated on August 4.
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7. Situational Reference Materials
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No information available at this time.
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