United
States Environmental Protection Agency
Region VIII
POLLUTION REPORT
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Date: |
Wednesday, November 9, 1994
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From: |
Craig Myers
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Subject:
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Initial POLREP
Aspen Park Solvents
Aspen Park,
Conifer, CO
Latitude: 39.5414000 Longitude: -105.2936000
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POLREP No.: |
1
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Site #:
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08-6D
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Reporting Period: |
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D.O. #:
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Start Date: |
10/25/1994
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Response Authority:
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CERCLA
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Mob Date: |
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Response Type:
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Time-Critical
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Demob Date: |
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NPL Status:
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Non NPL
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Completion Date: |
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Incident Category:
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Removal Action
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CERCLIS ID #: |
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Contract #
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RCRIS ID #: |
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The Site is in a residential area called Aspen Park, which is located near Conifer, Colorado. The Site contains the residences and associated buildings/businesses of a small mountain community.
In 1994 a sampling of a drinking water well by the Colorado Department of Health (CDH), in accordance with Colorado drinking water regulations for "non-transient non-community" systems, showed the well containing CCl4 in concentrations (9 parts per billion [ppb]) above the Maximum Contaminant Level (MCL) [5 ppb]. Four other drinking water wells within a 1/2 mile radius also were tested with no detections of CCl4.
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As a result of concerns expressed by the Aspen Park community members, EPA 8 began a Site Investigation (SI), requiring sampling of the wells sorrounding the 'suspect well'. The purpose of the SI was to: - Determine whether possible exposure to contaminated water extended to other Aspen Park wells; - Begin to assess the extent of contaminated ground water; - Identify potential cources of contamination, and; - Collect non-sampling data for site screening.
Between 09/24 - 10/27, 1994, 130 wells were sampled at the request of EPA 8, as part of the SI. Twelve (12) wells showed >30 ppb CCl4 (ranging from 41-8,500 ppb). In accordance with National Guidance for establishing Removal Action levels for contaminated drinking water sites, a site-specific Action Level of 5 ppb was developed, based on a detailed analysis of conditions at the site, by Region 8 toxicologists. These levels have been established in order to ensure adequate protection of the health of residents.
On October 24, 1994, EPA 8 began supplyng bottled water to 24 residences.
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Continue providing bottled water to selected residences. Collect and evaluate additinal water samples so as to further delineate the contaminate plume, and to assist with remedy deliberations.
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Review sampling data and remedy deliberations with the community.
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response.epa.gov/AspenParkSolvents
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