Southgate Coin Laundry, Salina, Kansas

State Coalition for Remediation of Drycleaners Site Profiles

Description
Historical activity that resulted in contamination.

The site was investigated and remediated in 2001 through the Kansas Drycleaner Evironmental Response Act. The building is currently a coin operated laudromat. Drycleaning operations ceased in 1992.

Remediation Status: Site closed

Contaminants
Contaminants present and the highest amount detected in both soil and groundwater.

Contaminant	Media	Concentration (ppb)	Nondetect
cis-1,2-Dichloroethene	groundwater
cis-1,2-Dichloroethene	soil
Tetrachloroethene (PCE)	groundwater
Tetrachloroethene (PCE)	soil
Trichloroethene (TCE)	groundwater
Trichloroethene (TCE)	soil

Site Hydrology

Deepest Significant Groundwater Contamination:		48ft bgs
Plume Size:		Plume Length: 100ft Plume Width: 50ft Plume Thickness: 36ft
Average Depth to Groundwater:		17ft

Lithology and Subsurface Geology

		Brown silty clay Conductivity: 0.000283ft/day Gradient: 0.002ft/ft
		coarse sand and gravel interbedded with silt and clay Conductivity: 283ft/day
		shale bedrock

Pathways and DNAPL Presence

Groundwater

Sediments

Soil

DNAPL Present

Vapor Intrusion Pathway

Has the potential for vapor intrusion (VI) been evaluated?		No
Has a vapor mitigation system been installed?		No

Remediation Scenario

Cleanup Goals:		Below EPA maxiumim contaminant level of 5 ug/L for PCE and TCE.
Remedy Level:		Full Scale Remedy

Technologies

In Situ Soil Vapor Extraction

Why the technology was selected:
SVE was selected based on cost and efficiency.

Date implemented:
SVE well installation in September 2001. System start-up April, 2002.

Final remediation design:
Three vertical SVE wells to 15 ft bgs with 9ft of screen. SVE blower with a design capacity of 90 cfm at 3 in of H20 vacuum.

Results to date:
System was shut down and removed in September 2003 after groundwater concentrations were non-detect for three consecutive sampling events. Post-remediation sampling events have shown no rebound of PCE concentrations and the site has been closed.

Next Steps:
Site is closed.

Cost to Design and Implement:
$30,207.14

Costs

Cost for Assessment:		$20,749.37
Cost for Operation and Maintenance:		Roughly $5000/year
Total Costs for Cleanup:		$72,325.46 (includes abandonment of site wells after closure).