U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Wells G&H Site - Olympia Property - Removal Polrep
Initial Removal Polrep
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region I
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Subject:
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POLREP #29
Pollution Report #29
Wells G&H Site - Olympia Property
0146
Woburn, MA
Latitude: 42.4947190 Longitude: -71.1308390
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To:
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Polrep Distribution, USEPA-Region 1
Ted Bazenas, US EPA Region 1
Carol Tucker, US EPA Region 1
Bryan Olson, US EPA Region 1
Meghan Cassidy, US EPA Region 1
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From:
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Frank Gardner, OSC
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Date:
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2/20/2009
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Reporting Period:
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January/February 2009
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1. Introduction
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1.1 Background
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Site Number: |
0146 |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
2/14/2003 |
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Response Authority: |
CERCLA |
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Response Type: |
Time-Critical |
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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: |
01 |
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Mobilization Date: |
3/28/2003 |
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Start Date: |
3/28/2003 |
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Demob Date: |
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Completion Date: |
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CERCLIS ID: |
MAD980732168 |
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RCRIS ID: |
MAD980732168 |
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ERNS No.: |
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State Notification: |
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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
1.1.2.1 Location
In total, the Wells G & H Superfund Site encompasses approximately 330 acres in Woburn, Middlesex County, Massachusetts and includes the aquifer and land area located within the zone of contribution to the City of Woburn’s two municipal drinking water wells known as Wells G & H. The Olympia Property is one of the five primary source areas of contamination within the Wells G&H Superfund Site.
1.1.2.2 Description of Threat
At a former drum disposal area at the Olympia Property Site (Site), PCB-contaminated surface soils posed a direct contact threat and TCE-contaminated subsurface soils acted as a continuing source of ground water contamination. See previous polreps for additional background information.
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2. Current Activities
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2.1 Operations Section
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2.1.1 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
The Olympia Nominee Trust (Olympia) has been identified as a potentially responsible party (PRP) as the owner of the site. Olympia is performing the removal action under an Administrative Order on Consent (AOC) issued by EPA.
2.1.2 Response Actions to Date
In order to address TCE contamination in subsurface soils at the Site, Olympia installed and is now operating an in situ permanganate injection treatment system. Injection events are being conducted at the rate of about 6 per year. In addition to the established injection wells and trenches, Olympia is now also utilizing direct push injection technology to better target the delivery of the reagent.
Olympia conducted the final injection for the past year during December 8-11, 2008 injecting 4,300 gallons of permanganate solution. During the following week, the site was secured for the onset of winter weather. See previous polreps for prior activities conducted by Olympia.
2.1.3 Progress Metrics
Olympia has injected about 24,300 gallons of sodium permanganate solution (various concentrations) to date. Ongoing ground water monitoring indicates that the permanganate reagent has been delivered throughout much of the treatment cell.
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2.2 Planning Section
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2.2.1 Anticipated Activities
2.2.1.1 Planned Response Activities
Planned removal activities include continued monitoring to ensure compliance with cleanup standards established in the Record of Decision (ROD). Future injections will be conducted at the rate of about 6 events per year as need to achieve the cleanup standards.
2.2.1.2 Next Steps
Injection events will resume in the spring of 2009.
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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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2.4.1 Narrative
Since Olympia is conducting the removal action. EPA has been able to limit its costs to only that needed for oversight of Olympia's actions.
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Budgeted |
Total To Date |
Remaining |
% Remaining |
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Extramural Costs
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| ERRS - Cleanup Contractor |
$1,500,000.00 |
$0.00 |
$1,500,000.00 |
100.00% |
| TAT/START |
$100,000.00 |
$32,475.00 |
$67,525.00 |
67.53% |
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Intramural Costs
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| USEPA - Direct |
$100,000.00 |
$40,000.00 |
$60,000.00 |
60.00% |
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| Total Site Costs |
$1,700,000.00 |
$72,475.00 |
$1,627,525.00 |
95.74% |
* 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
N/A
2.6 Liaison Officer
N/A
2.7 Information Officer
N/A
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3. Participating Entities
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3.1 Unified Command
N/A
3.2 Cooperating Agencies
The OSC is coordinating closely with EPA's Remedial Project Manager (RPM) for the NPL site as well as the Massachusetts Department of Environmental Protection (MassDEP).
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4. Personnel On Site
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N/A
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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
For additional information please refer to http://www.epaosc.org/WellsG&H_Olympia.
6.2 Reporting Schedule
N/A
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7. Situational Reference Materials
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The administrative record for this removal action is available at the Records Center at the EPA office in Boston as well as the information repository for the site at the Woburn Public Library.
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POLREP #29 Last Updated 3/2/2009
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