State Coalition for Remediation of Drycleaners Site Profiles
Franklin Cleaners, Hempstead, New York
Description
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| Franklin Cleaners is the site of a former dry cleaner located in the Village of Hempstead on Long Island in New York. It is listed as a Class 2 Inactive Hazardous Waste Site, which means that a consequential amount of hazardous waste was released that is posing a significant threat to public health or the environment. A dry cleaner operated on this site from 1957 until 1991. The site is approximately 1/8 acre in size and includes a two-story building with residential apartments on the second floor and a coin laundromat and a delicatessan occupying the first floor. The former dry cleaner occupied part of the first floor and the basement. Except for the immediately adjacent properties, the surrounding properties are residential. |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
| Contaminant | Media | Concentration (ppb) | Nondetect |
|---|---|---|---|
| Tetrachloroethene (PCE) | groundwater | 1,500 ppb | |
| Tetrachloroethene (PCE) | soil | 650,000 ppb |
Site Hydrology
| Deepest Significant Groundwater Contamination: | 90ft bgs | |
| Plume Size: | Plume Length: 5,280ft Plume Width: 300ft |
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| Average Depth to Groundwater: | 20ft |
Lithology and Subsurface Geology
| Fine to coarse sand and gravel with silt and lenses of silty sand. Some silty clay present in thin layers. Depth: 0-75ft bgs 75ft thick Gradient: 0.0016ft/ft |
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| significant clay barrier Depth: 75-95ft bgs 20ft thick |
Pathways and DNAPL Presence
 Groundwater SedimentsSoilDNAPL Present |
Remediation Scenario
Cleanup
Goals: |
Reduce, control, or eliminate contaminated media to the extent practicable; eliminate the threat of groundwater and indoor air contamination by eliminating on-site soil contamination; eliminate the potential for human exposure to on-site contaminated soils. Provide for attainment of SCGs to the limits of the affected area to the extent practicable (SCG for PCE in soil, 1.4 mg/kg; PCE in groundwater, 5 µg/L). |
Technologies
In Situ Air Sparging |
Date implemented: Final remediation design: Results to date: Cost to Design and Implement: |
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In Situ Soil Vapor Extraction |
Date implemented: Final remediation design: Results to date: Cost to Design and Implement: |
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Ex Situ Pump and Treat |
Date implemented: Final remediation design: Results to date: Cost to Design and Implement: |
Costs
Cost
for Assessment: |
$384,000 | |
Cost
for Operation and Maintenance: |
$1,412,000 (present worth at 2o years operation) | |
Total
Costs for Cleanup: |
Contacts
| Jim Harrington New York Department of Environmental Conservation 11th Floor 625 Broadway Albany, New York 12233-7012 518-402-9755 518-402-9722 (fax) jbharrin@gw.dec.state.ny.us |
Site Specific References
| (available on microfilm only) 1. Preliminary Site Assessment- Mach 1993 2. Remedial Investigation/Feasibility Study Workplan - March 1997 3. Remedial Investigation/Feasibility Study Report - October 1997 4. Proposed Remedial Action Plan - February 1998 5. Record of Decision - March 1998 |
