Ex Situ Bioremediation of Soil at Two Drycleaner Sites, Various Locations

Site Name:

Peerless Cleaners, WI; Stannard Launders and Dry Cleaners, WI

Location:

Peerless Cleaners, WI
Stannard Launders and
Dry Cleaners, WI

Period of
Operation:

Peerless Cleaners - 2 years, date not specified
Stannard Launders and Dry Cleaners - not specified

Cleanup
Type:

Full scale

Technology:
Ex situ bioremediation in biopiles
- Soil was excavated and transported off-site for bioremediation in biopiles. The treatments included adding microorganisms to the soil and passing air through the piles to stimulate biological growth and biodegradation of contaminants. Following bioremediation, the soil was disposed in a landfill.
- At the Peerless Cleaners site, 18 tons of soil was excavated from areas with high contaminant concentrations and treated in biopiles. Areas with lower contaminant concentrations were treated using an in situ passive SVE system.
- At the Stannard Launders and Dry Cleaners site, 594 tons of soil was excavated and treated in biopiles.

Cleanup Authority:
State

Contacts:
Varied by site

Contaminants:
Chlorinated Solvents, Naphthalene, Ethylbenzene, Xylenes, Toluene
- Chlorinated solvents in soil - PCE (12,000 mg/kg), TCE, DCE, DCA (34 mg/kg)

Waste Source:
Waste and wastewater from drycleaning operations

Type/Quantity of Media Treated:
Soil
- Peerless Cleaners - 18 tons
- Stannard Launders and Dry Cleaners - 594 tons

Purpose/Significance of Application:
Use of biopiles to treat contaminated soil from drycleaning operations

Regulatory Requirements/Cleanup Goals:
- Specific cleanup levels not identified; goal of cleanup was to remove as much of the contamination source as possible

Results:
- Peerless Cleaners - Concentrations of chlorinated organic compounds were reduced to non-detect levels.
- Stannard Launders and Dry Cleaners - Information was not available on contaminant concentrations in the soil and groundwater at the site following remediation.

Cost Factors:
Design and implementation costs
- Peerless Cleaners - $14,000
- Stannard Launders and Dry Cleaners - $39,000

Description:
Ex situ remediation of soil using bioremediation in biopiles was performed at 2 drycleaner sites in Wisconsin. Soils were contaminated with chlorinated solvents and other organics from drycleaning operations. For the Peerless Cleaners site, concentrations of chlorinated organic compounds were reduced to non-detect levels.