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1. Introduction
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1.1 Background
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Site Number: |
01HK |
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Contract Number: |
EP-W-08-061 |
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D.O. Number: |
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Action Memo Date: |
11/3/2011 |
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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: |
N/A |
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Mobilization Date: |
1/23/2012 |
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Start Date: |
1/23/2012 |
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Demob Date: |
2/22/2012 |
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Completion Date: |
2/22/2012 |
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CERCLIS ID: |
MEN000106069 |
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RCRIS ID: |
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ERNS No.: |
N/A |
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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
CERCLA - Time Critical Removal
1.1.2 Site Description
The Site consists of two properties: Lot 172 (approximately 1/4 acre), which comprises the former Jim's Dry Cleaners building, an attached occupied apartment, and paved areas; and Lot 171 (approximately 1/2 acre which abuts the Site to the north, was formerly the location of a Laundromat, and is currently an empty lot with a large concrete pad. The dry cleaning facility was in business prior to 2007, although exact dates of operation are unknown.
1.1.2.1 Location
The Site is located at 110 Aroostook Avenue, Millinocket, Penobscot County, Maine. It is bordered to the north by residential and commercial properties and Pine Street, to the south by a church and residential properties, to the east by Aroostook Avenue and residential properties, and to the west by commercial properties and Penobscot Avenue. The geographical coordinates at the approximate center of the Site are latitude 45.6542 north and longitude -68.7080 west.
1.1.2.2 Description of Threat
EPA Analysis of four indoor air samples detected tetrachloroethylene (PCE) and trichloroethylene (TCE) in excess of EPA Region 1 regional screening levels (RGL) and the Maine Department of Environmental Protection (MEDEP) screening levels for unrestricted residential use. All of the sub-slab/floor soil gas samples revealed PCE in excess of MEDEP levels for unrestricted residential use.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
The preliminary assessment results indicated that the pathway of the contaminants is vapor intrusion from the sub-slab soil gas. Site investigation sampling supports this by indicating that the contamination is accumulating beneath the sub-slab and permeating into the building. The following table summarizes the data from the EPA site investigation.
| Table 1: Jim’s Dry Cleaners Site PCE and TCE Concentrations (µg/m3)Analyzed by EPA on May 23-26, 2011 |
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New Section Area |
Old Section Area |
Storage Area |
Apartment |
| 24-Hour Indoor Air |
33 (PCE)
6.9 (TCE) |
26 (PCE)
7.1 (TCE) |
27 (PCE)
16 (TCE) |
20 (PCE)
3.7 (TCE) |
| Sub-Slab Soil Gas (max) |
49,000 (PCE)
ND (1309)[1](TCE) |
NA |
NA |
NA |
| Sub-Floor Soil Gas (max) |
NA |
115 (PCE)
1.1 (TCE) |
NA |
NA |
| EPA Region 1 and MEDEP Residential Indoor Air Targets |
(PCE): 0.41 (TCE): 1.2 |
| MEDEP Residential Soil Gas Targets |
(PCE): 20.62 (TCE): 60.83 |
| Ambient Air |
(PCE): ND (0.75)
(TCE): ND (0.59) |
[1] These reporting limits were increased as a result of dilutions made to the samples to achieve a reportable value of TCE. As a result they are well about the MEDEP solid gas target level, making it difficult to accurately determine the presents or absences of TCE in soil has below the concrete slab. However, the reporting limits for samples collected below the wood floor in the old section were lower (0.36 and 0.40).
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2. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
ERRS mobilized on 1/23/2012 to commence removal action. Lab packing of solvents was completed on
01/24/2012 and system installation concluded on 01/30/2012. Final demobilization was on February 22, 2012.
2.1.2 Response Actions to Date
- Lab packed dry cleaning solvents for transportation and disposal.
- Installed sub-slab depressurization system.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
A Notice Letter was sent to the PRP.
2.1.4 Progress Metrics
| Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
| Lab Pack |
solvents/flammable liquids |
70 gallons |
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none |
fuel blending |
| Lab Pack |
pesticides/flammable |
75 pounds |
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none |
fuel blending |
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2.2 Planning Section
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2.2.1 Anticipated Activities
No further activities anticipated.
2.2.1.1 Planned Response Activities
None at this time.
2.2.1.2 Next Steps
None at this time.
2.2.2 Issues
None at this time.
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2.3 Logistics Section
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No information available at this time.
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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
Nothing to report at this time.
2.5.2 Liaison Officer
No information available at this time.
2.5.3 Information Officer
No information available at this time.
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3. Participating Entities
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3.1 Unified Command
N/A
3.2 Cooperating Agencies
MEDEP
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4. Personnel On Site
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No information available at this time.
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5. Definition of Terms
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No information available at this time.
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6. Additional sources of information
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6.1 Internet location of additional information/report
No information available at this time.
6.2 Reporting Schedule
No information available at this time.
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7. Situational Reference Materials
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No information available at this time.
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