U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Ravenswood PCE - RESTART - Removal Polrep
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region III
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Subject:
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POLREP #2
Initiation of Removal Action
Ravenswood PCE - RESTART
C368
Ravenswood, WV
Latitude: 38.9516600 Longitude: -81.7616600
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To:
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From:
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Michael Towle, On-Scene Coordinator
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Date:
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4/15/2015
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Reporting Period:
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4/2/2015 thru 4/15/2015
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1. Introduction
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1.1 Background
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Site Number: |
C368 |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
3/19/2015 |
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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: |
NPL |
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Operable Unit: |
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Mobilization Date: |
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Start Date: |
4/2/2015 |
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Demob Date: |
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Completion Date: |
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CERCLIS ID: |
WVSFN0305428 |
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RCRIS ID: |
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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
This Site is a restart of a Removal Action at an NPL Site after a change in the scope of the Removal Action.
1.1.2 Site Description
The Site includes an area of PCE-contaminated ground water affecting public water supply wells. After investigation activity by EPA Remedial Program, an area of highly contaminated soil and nearby contamination of indoor air is posing threats not anticipated in the selection of the remedy (ROD) for the Site issued in 2011. The EPA Removal Program has found the Site conditions to pose a threat warranting time-critical removal actions and has changed the scope, increased the ceiling, and approved exemptions from the statutory limits in order to restart removal actions completed by EPA in 2008.
1.1.2.1 Location
The Ravenswood PCE Site is an area of contaminated ground water underlying the City of Ravenswood, Jackson County, West Virginia. The source area which is the subject of the present Removal Action is located near the intersection of Walnut Street and Washington behind buildings once housing a dry cleaning establishment.
1.1.2.2 Description of Threat
The source area of contaminated soil is releasing PCE into the ground water which migrates to a public water supply. Although EPA is constructing a soil vapor extraction system to address the overall site threats under the Remedial Program (NPL), the magnitude of the contamination was not anticipated to require excavation activities. Additionally, a nearby intrusion of PCE vapor into a structure posing unacceptable risk to inhabitants was not anticipated. The Removal Action is limited to address a small area of highly contaminated soil and a nearby intrusion of vapor.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
The Site has been the subject of numerous investigatory activities. In 2012, an area of highly contaminated soil was identified in the subject source area as part of an investigation to support a Remedial Design. Additionally, an intrusion of PCE-contaminated vapor was identified nearby. The OSC relied upon a review of information generated by the EPA Remedial Program - specifically the 2012 Pre-Remedial Design Investigation and evaluation by a toxicologist of indoor air information - to complete a Removal Site Evaluation. The indoor air scenario results in a Hazard Quotient of 6.3. The Removal Site Evaluation was initiated February 20, 2015 and concluded March 19, 2015 with recommendation for removal action and approval of same. The Action Memorandum, signed March 19, 2015 contains a summary of analytical information collected at the Site beginning in 1989 and which was relied upon to demonstrate that the area of contaminated soil which is the subject of the Removal Action is likely a significant source of contamination to the wells. A Removal Action is needed to reduce the migration and mobility of the PCE and enhance the effectiveness of the selected Remedial Action.
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2. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
On April 2, 2015, the OSC met on the Site with representatives of the City of Ravenswood, a representative of the EPA Remedial Program's contractor conducting remedial actions, and representatives of the EPA Removal Program's ERRS contractors. The purpose of the meeting was to familiarize all parties to the scope of the Removal Action and the likely implementation activities and the likely schedule. This meeting is the initiation of the Removal Action. The OSC authorized the collection of soil samples for characterization to support disposal. Full mobilization to the Site was initiated on April 13, 2015.
2.1.2 Response Actions to Date
On April 13, 2015, ERRS contractors mobilized to the Site and coordinated the removal of trees located within the work zone. The work zone is marked as an area 36 feet from the wall of the building. This area will be fenced. On this day, a private utility company was also onsite to mark likely utilities. Numerous water lines, storm lines, gas lines, sewer lines, and an electric line were identified along with lines of uncertain usage. Equipment was also mobilized to the Site.
The OSC and ERRS coordinated activity relating to preparation for disposal of soil. The accelerated disposal timeline is important to minimize the amount of soil which has to be staged on site since there is no room for such staging.
On April 14, 2015, ERRS contractors conducted hand excavation activities throughout the work area to verify the depth of identified pipes/lines. It appears that sewer lines are located at approximately 3 feet below the grade along with water lines. These lines basically run north-south. Gas lines are located about 2 feet below the grade and run both north-south and east-west throughout the work area. Storm lines are less than 1 foot below the grade and run diagonally across the work area. The surmised configuration of the pipes makes completion of the work exceedingly difficult as originally expected and designed. OSC will work with the RPM to make necessary adjustments.
On April 15, 2015, the electric company was onsite to conduct work on the overhead power lines. As such, minimal effort could be conducted this day and the crew was not onsite for a full day. A fence was installed around the work area this day.
The EPA START contractor is onsite assisting with monitoring. START is also preparing a Site sketch map.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
The Site is a Fund-Lead NPL Site. The OSC is unaware of any PRPs.
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 OSC will need to coordinate with the Remedial Program regarding the expected work. The Remedial Program is expecting an excavation of a certain type in order to support the upcoming Remedial Action.
2.2.1.1 Planned Response Activities
Excavate shallow soils in the work area and deeper obviously contaminated soils without compromising structures or utilities. Dispose excavated soils.
Provide for carbon filter units to minimize indoor air issues in advance of more permanent measures.
2.2.1.2 Next Steps
2.2.2 Issues
There are a number of utilities in the excavation area. The source area is also immediately behind several residences.
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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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No information available at this time.
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3. Participating Entities
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No information available at this time.
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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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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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