Best Cleaners, Wichita, Kansas

State Coalition for Remediation of Drycleaners Site Profiles

Description
Historical activity that resulted in contamination.

The site is part of a larger investigation within the city of Wichita known as the Gilbert Mosley Plume. Drycleaning operations were conducted in a strip mall using tetrachloroethylene (PCE). Currently the building is used by the New Life Outreach Mission. Contaminants were found primarily along the city sewer line southwest of the former facility. At some point before investigation and remediation the City replaced the sewer line and probably removed some of the contaminated soil in the process. The site was investigated and is being remediated through the Kansas Drycleaner Environmental Response Act.

Remediation Status: In groundwater monitoring

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:
Plume Size:		Plume Length: 550ft Plume Width: 350ft Plume Thickness: 25ft
Average Depth to Groundwater:		17ft

Lithology and Subsurface Geology

		Interbedded silts and clays Depth: 0-9ft bgs 9ft thick Gradient: 0.001ft/ft
		sand Depth: 9-40ft bgs 31ft thick
		shale bedrock Depth: 40ft bgs

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:		Groundwater and soil below the respective EPA maximum contaminant levels for PCE and PCE degredation products.
Remedy Level:		Full Scale Remedy

Technologies

In Situ Air Sparging

Why the technology was selected:
The technology was selected based on cost and efficiency given the site geology.

Date implemented:
System start-up September 2006.

Final remediation design:
Four vertical SVE wells screened from 5-15 ft bgs, five AS wells screened from 35 ft bgs to 37 ft bgs, three monitoring wells to determine radius of influence.

Results to date:
The initial design involved two remediation systems. After reviewing information on an active system in the area, only one of the systems was installed. The system was shut down in November 2008 following a year of groundwater sampling indicating contaminants were below MCL or non-detect.

Next Steps:
Long-Term rebound study. Continue groundwater monitoring.

Cost to Design and Implement:
$51,768.85 for all technologies

In Situ Soil Vapor Extraction

Why the technology was selected:
The technology was selected based on cost and efficiency given the site geology.

Date implemented:
System start-up September 2006.

Final remediation design:
Four vertical SVE wells screened from 5-15 ft bgs, five AS wells screened from 35 ft bgs to 37 ft bgs, three monitoring wells to determine radius of influence.

Next Steps:
Long-Term rebound study. Continue groundwater monitoring.

Cost to Design and Implement:
$51,768.85 for all technologies