U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Former Mount Clemens Landfill - Removal Polrep
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region V
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Subject:
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POLREP #2
Continuation of Removal Action
Former Mount Clemens Landfill
B5ZT
Mount Clemens, MI
Latitude: 42.6002000 Longitude: -82.8683000
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To:
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Richard Karl, EPA SFD
Jason El-Zein, EPA SFD
Charles Gebien, EPA SFD
Brian Kelly, EPA SFD
Mike Ribordy, EPA SFD
Thomas Kenney, EPA ORC
John Glover, U.S. EPA
Beverly Kush, EPA SFD
William Ryczek, U.S. EPA
Michael Chezik, DOI
Sherry Fielding, EPA HQ
Mark Johnson, CDC ATSDR
Michelle Colledge, CDC ATSDR
Mark Dominic, HUD
Joe Walczak, MDEQ
Bruce VanOtteren, MDEQ
James Sygo, MDEQ
Ernest Ndukwee, MDEQ
Christina Bush, MDCH
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From:
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Jon Gulch, OSC
Paul Ruesch, OSC
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Date:
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11/11/2011
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Reporting Period:
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November 4-11, 2011
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1. Introduction
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1.1 Background
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Site Number: |
B5ZT |
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Contract Number: |
EP-S5-08-02 |
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D.O. Number: |
0094 |
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Action Memo Date: |
8/30/2011 |
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Response Authority: |
CERCLA |
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Response Type: |
Time-Critical |
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Response Lead: |
EPA |
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Incident Category: |
Removal Action |
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NPL Status: |
Non NPL |
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Operable Unit: |
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Mobilization Date: |
11/1/2011 |
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Start Date: |
11/1/2011 |
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Demob Date: |
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Completion Date: |
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CERCLIS ID: |
MIN000510529 |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
MDEQ |
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FPN#: |
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Reimbursable Account #: |
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1.1.1 Incident Category
Time Critical Removal Action
1.1.2 Site Description
The Former Mount Clemens Landfill (Site) is a 54.5 acre former landfill which operated from the 1940s -1960s. Residential buildings and a waste water treatment plant were constructed atop and adjacent to the site in the late 1960s - early 1970s. The site is bordered by residential homes along the northwest side and two large apartment buildings and townhomes to the south. The Park Place Apartments (constructed directly on top of waste at the southwest corner of the site) is a 10-story, 187 unit senior housing complex. The Clinton Place Towers (located at the southeast corner of the site) is a 7-story, affordable housing complex for seniors with 283 units in 14 buildings. The U.S. Department of Housing and Urban Development (HUD) estimates that approximately 750 people live in the two housing complexes. The Mount Clemens Wastewater Treatment Facility is located on the north end and northeast corner of the site. The City owns and operates the Wastewater Treatment Facility.
1.1.2.1 Location
The site is located north of N. River Road, east of Park Street, South of Clara Street and N. Broadway, and west of Macomb Daily Drive (T.2.N / R.13.E) in Mount Clemens, Macomb County, Michigan 48043.
1.1.2.2 Description of Threat
Methane gas is being released from decomposing waste at the site. The pathway to potential receptors is through subsurface soils into residential buildings located both on and adjacent to the site. Explosive levels of methane gas have been detected in on-site borings in past investigations and quarterly sampling since June 2008. Methane gas is combustible between a lower explosive limit (LEL) of 5% and an upper explosive limit (UEL) of 15% by volume in air. The MDEQ draft screening level for methane gas is 1.25% (25% of the LEL). In April 2011, methane gas was detected in 14 of 54 monitoring wells sampled, ranging in concentration from 0.1% to 44.1% methane. Five of the wells exceed the Michigan Department of Environmental Quality (MDEQ) draft screening level of 1.25% methane. The majority of these monitoring wells are located immediately adjacent to the Park Place Towers and Clinton Place Apartment complexes.
Methane has also been detected in groundwater across the site at concentrations above MDEQ’s Flammability and Explosivity Screening Level (FESL) of 520ug/L. Thirteen of seventeen groundwater wells exceed the FESL.
On January 7, 2011, the Agency for Toxic Substances and Disease Registry (ATSDR) completed an evaluation and issued a letter to MDEQ concluding that the presence of explosive methane levels in the subsurface soils near the Park Place Towers and Clinton Place Apartment complexes poses an urgent public health hazard.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
In August 2010, HUD, ATSDR, MDEQ, Macomb County, and the City of Mount Clemens formed a technical team to monitor and address methane issues at the site. The City requested U.S. Environmental Protection Agency (EPA) assistance in April 2011. EPA reviewed quarterly monitoring data, results of a pilot study where a vacuum was applied to existing passive vent wells, and a work plan proposing conversion of the passive vent system to an active extraction system. EPA conducted a site visit to inspect and assess the site and discuss the work plan with the City in July 2011.
Based on a review of existing information and the removal site inspection, EPA determined that converting the passive venting system to an active extraction system will control off site migration of methane from the site.
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2. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
The objective of the project is to convert the existing passive trench and vertical well vent system to an active gas extraction system to mitigate threats posed methane gas migration at the site.
2.1.2 Response Actions to Date
As of November 11, 2011, the following activities have been completed:
- Approximately 2,000 feet of 4" HDPE sub-surface piping was installed to connect 7 new extraction wells and 3 existing passive vent wells to the extraction system and solar flares (yet to be installed).
- Excavations made to facilitate pipe installation have been backfilled and restored to the greatest extent possible given the upcoming winter months.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
No information is available concerning contributors of waste to the landfill. The City of Mount Clemens owned and operated the landfill during its operation and continues to own the property. The only known PRP at this site is the City, however, the City does not have funds available to control methane migration.
2.1.4 Progress Metrics
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Manifest # |
Treatment |
Disposal |
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2.2 Planning Section
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2.2.1 Anticipated Activities
The following activities are anticipated to take place in the next reporting period:
- Valve housings will be manufactured, delivered and installed at 8 locations on the landfill where sub-surface valves were installed to control vacuum to extraction wells;
- The two soil vapor extraction sheds/solar-operated flaring stations will be manufactured, delivered and installed on the site to create vacuum to the extraction wells and burn off methane gas; and
- The active extraction system will be made operational, tested and monitored.
The soil vapor extraction system and solar-operated flares required special ordering and are currently being built to system specifications. The equipment is expected to be delivered on November 28, 2011. As all other preparation activities are completed, the project will be on hold until the soil vapor extraction units and solar-operated flares are delivered.
2.2.1.1 Planned Response Activities
N/A
2.2.1.2 Next Steps
A Post Removal Site Control is being prepared with the City of Mount Clemens to operate, monitor and maintain the system. An Operations, Maintenance and Monitoring Plan is under development to ensure the proper operation and continued care of the system. The City will follow this plan in the future to ensure that the system is operating properly and controlling methane migration off site.
2.2.2 Issues
The soil vapor extraction system and solar-operated flares required special ordering and are currently being built to system specifications. The equipment is expected to be delivered on November 28, 2011. As all other preparation activities are completed, the project will be on hold until the soil vapor extraction units and solar-operated flares are delivered.
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2.3 Logistics Section
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N/A
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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 Health and Safety Plan (HASP) was prepared for the project by the ERRS contractor.
2.5.2 Liaison Officer
N/A
2.5.3 Information Officer
The City of Mount Clemens Department of Public Services Director is serving as information officer for the project. A fact sheet was developed for the community and distributed to all residents of the Park Place Towers, Clinton Place Apartments, Sunset Manor Apartments, and Holiday Garden Apartments on November 1, 2011.
Upon request, a presentation explaining the project was given and a question/answer session held on November 8, 2011 for residents of the Clinton Place Apartments. Approximately 100 residents attended.
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3. Participating Entities
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3.1 Unified Command
N/A
3.2 Cooperating Agencies
Agency for Toxic Substances and Disease Registry
U.S. Department of Housing and Urban Development
Michigan Department of Environmental Quality
Michigan State Housing Development Authority
Michigan Department of Community Health
Macomb County Health Department
City of Mount Clemens
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4. Personnel On Site
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U.S. EPA - 1
ERRS - 1
American Environmental Group - 2
City of Mount Clemens - 6
AKT Peerless - 2
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5. Definition of Terms
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N/A
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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/formermountclemenslandfill
6.2 Reporting Schedule
Due to heightened awareness and interest in the site by surrounding residents, bulletins are being issued every couple of days to update neighbors on work progress.
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7. Situational Reference Materials
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N/A
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