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 #23
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
Thomas Short, EPA
Samuel Borries, EPA
Mike Ribordy, EPA
Jim Saric, EPA
Mark Mills, MDNR
Dan Peabody, MDEGLE
Polly Synk, MDAG
Randy Rapp, Allegan County Health Dept
Dan Wedge, Allegan County
Cyndi Trobeck, City of Otsego
Bryan Winn, Otsego Township
Lisa Williams, U.S. FWS
Valincia Darby, U.S. DOI
Greg Baker, NOAA
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From:
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Paul Ruesch, OSC
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Date:
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9/1/2017
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Reporting Period:
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8/19/2017 - 9/1/2017
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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 is complete in BRSA 4. Removal operations continue in BRSA 6. The staging area is nearly completed in BRSA 9.
2.1.2 Response Actions During Reporting Period
BRSA 4
- Excavation of contaminated soils and sediments was completed, with confirmation results received, in both riverbank grids 44-46 and the adjacent stream tube grids (see Tables 1 & 2);
- Completed transportation and disposal of contaminated soils and sediments for disposal;
- Demobilization of the WWTP, office trailer, equipment and supplies; and
- Backfilling, grading, stabilization and restoration of river banks continues.
BRSA 6
- Excavation of contaminated soils continues with excavation completed and confirmation results received in riverbank grids 6-8. There are 54 total grids in BRSA 6, with each grid consisting of approximately 50 lineal feet of riverbank. There are 4 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; and
- Completed construction of sheet pile coffer dam systems to facilitate removal of riverbank soils and in-stream sediments.
Estimated excavation depths and confirmation sampling results are found below for riverbank grids in BRSA 4 (Table 1) and adjacent stream tube grids (Table 2) along with results from BRSA 6 (Table 3) and adjacent stream tube grids (Table 4).
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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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44
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48
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0.065
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45
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36
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0.39
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46
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36
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0.36
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Table 1. BRSA 4
Riverbank Grid Confirmatory Sampling Results
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BRSA 4
STREAM TUBE 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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19D-44
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6
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0.19
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19D-45
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6
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0.074
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19D-46
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6
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0.13
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Table 2. BRSA 4
Stream Tube Confirmatory Sampling Results
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BRSA 6
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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6
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12
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0.46
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7
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12
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<0.032
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8
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12
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1.00
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Table 3. BRSA 6 Riverbank
Grid Confirmatory Sampling Results
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BRSA 6
STREAM TUBE
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TOTAL ESTIMATED EXCAVATION DEPTH (in)
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FINAL
CONFIRMATION TOTAL PCBs RESULT (mg/kg)
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17D-6
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24
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<0.039
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17D-7
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24
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0.048
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17D-8
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24
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0.18
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Table 4. BRSA 6
Stream Tube 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 (preliminary) riverbank grids and stream tubes can be found on Figure 8 of the BRSA 4, 5, 6 & 9 TM.
BRSA 9
- Continue construction of staging area & stabilization pad;
- Mobilize WWTP, office trailer, supplies and equipment; and
- Began construction of coffer dam system.
OVERALL SITE
- Transport/disposal of approximately 3,285 tons of excavated soils to an EPA-approved landfill facility (see Section 2.1.4).
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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 116,419 gallons of contact water from contaminated grids and contaminated soils staging pads in on-site WWTPs located in BRSAs 4 & 6 (see Section 2.1.4). Sampling results from the WWTPs 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 |
50 lbs |
950 lbs |
NA |
recycling |
Otsego Recycling Center
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| Plastic |
solid |
20 lbs |
365 lbs |
NA |
recycling |
Otsego Recycling Center |
| Steel |
solid |
1620 lbs |
10,910 lbs |
various |
recycling |
Broken Arrow Recycling |
| Contaminated soil (< 50 ppm* PCBs) |
solid |
3285 tons (est) |
19,842 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 |
116,419 gal |
1,024,697 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 restoration of all excavated riverbank & in-stream sediment removal areas;
- Remove staging area and stabilization pad; and
- Complete transport contaminated soils & sediments for disposal.
BRSA 6
- Continue excavation of contaminated riverbank soils & in-stream sediments;
- Complete installation of sand bag coffer dam systems;
- Treat contact water from contaminated grids & contaminated soils staging pad; and
- Transport contaminated soils & sediments for disposal.
BRSA 9
- Complete construction of staging area and stabilization pad;
- Begin drawdown of Pine Creek impoundment; and
- Establish access and construct coffer dam system to facilitate removal of stream tube(s) at Pine Creek confluence.
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
- A request by AMEC-FW to extend the project completion date from March 31, 2018 to August 31, 2018 was submitted on August 18 and approved by US EPA;
- AMEC-FW continues to hold meetings to resolve outstanding issues and concerns on the draft TM for BRSAs 7 & 8.
- Section 3 of the BRSA 7 & 8 TM was approved to facilitate commencement of a plan to dredge a 'pilot channel' in front of the temporary WCS;
- A meeting was held with the Allegan County Drain Commission on August 21 to discuss plans to draw down Pine Creek to facilitate removal of contaminated in-stream sediments at the confluence of Pine Creek and the Kalamazoo River.
2.2.2 Issues
None
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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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2.4.1 Narrative
See PolReps #3 and #7
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Budgeted |
Total To Date |
Remaining |
% Remaining |
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Extramural Costs
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| START |
$965,000.00 |
$725,000.00 |
$240,000.00 |
24.87% |
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Intramural Costs
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| US EPA - Direct |
$150,000.00 |
$125,000.00 |
$25,000.00 |
16.67% |
| US EPA - InDirect |
$150,000.00 |
$100,000.00 |
$50,000.00 |
33.33% |
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| Total Site Costs |
$1,265,000.00 |
$950,000.00 |
$315,000.00 |
24.90% |
* The above accounting of expenditures is an estimate based on figures known to the OSC at the time this report was written. The OSC does not necessarily receive specific figures on final payments made to any contractor(s). Other financial data which the OSC must rely upon may not be entirely up-to-date. The cost accounting provided in this report does not necessarily represent an exact monetary figure which the government may include in any claim for cost recovery.
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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
- Letters were delivered door to door to all residents in the Pine Creek Drainage District on August 23 providing notice and information related to a planned drawdown of water levels in Pine Creek to support removal operations in BRSA 9 at the confluence of Pine Creek and the Kalamazoo River.
- A picnic for the crew was hosted by a local resident in appreciation of the cleanup work conducted this summer (see photo).
- Access to the command center area was provided to contractors to Michigan Gas Utilities to support installation of a natural gas pipeline through the site.
2.5.3 Information Officer
- A public availability session was held on August 31 for residents living in the Pine Creek Drainage District to provide details and answer questions about a plan to draw down the water level in Pine Creek during the month of September.
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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.: 3
AMEC-FW: 2
Spicer Group: 1
TOTAL: 45
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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
mg/kg milligrams per kilogram
MDEQ Michigan Department of Environmental Quality
MDNR Michigan Department of Natural Resources
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 September 15.
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7. Situational Reference Materials
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No information available at this time.
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POLREP #23 Last Updated 9/1/2017
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