General Information

Site Name and Location:		Express Cleaners Salina, Kansas, United States
Description: Historical activity that resulted in contamination.		Between 1985 and 1988 several public water supply (PWS) wells were tested and found to contain low levels of VOCs. Investigations led to the Express Cleaners site as a source for PCE contamination in the PWS wells. The drycleaning building has since been torn down and replaced by the Salina Regional Health Center. The construction of the new building was completed in conjuction with the installation of the remediation system.

Contaminants:

Contaminants: Contaminants present and the highest amount detected in both soil and groundwater (please avoid giving ranges).		Contaminant Conc in GW Conc. in Soil 1,1-Dichloroethene 11 ug/L 7.5 ug/Kg 1,2-Dichloroethane 22 ug/L cis-1,2-Dichloroethene 71 ug/L 216 ug/Kg Tetrachloroethene (PCE) 6800 ug/L 9680 ug/Kg trans-1,2-Dichloroethene 15 ug/L Trichloroethene (TCE) 360 ug/L 964 ug/Kg
Other Contaminants Present: Indicates what other contaminants were found on-site
Deepest Significant Groundwater Contamination:
Plume Size:		3600 ft long x 1000 ft wide x 50 ft deep

Site Hydrology:

Depth to Groundwater:		30 ft
Lithology and Subsurface Geology:		Clay to 15 ft bgs underlain by roughly 15 ft of silt. Medium to coarse grained sand with some gravel from 30-75 ft bgs. Bedrock is shale.
Conductivity:		ft/day
Gradient:		0.007

Pathways and DNAPL Presence:

Pathways:		Groundwater Soil
DNAPL Presence:		No

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:		Reduce PCE groundwater contamination to below EPA Maximum Contaminant Level (MCL) of 5 µg/L. Reduce PCE soil contamination in accordance with KDHE Risk-Based Standards of 180 µg/kg.
Remedy Level:		Full Scale Remedy

Technologies:

Technologies Used:		In Situ: Soil Vapor Extraction
Other technologies used:
Why the technology was selected:		The technology was chosen based on cost and the geology. SVE systems work well in similar geology in Kansas.
Date implemented:		SVE wells installed in June 2001, system start-up in December 2001.
Final remediation design:		Five SVE wells to 25 ft with minimum 10 ft of screen. Rotron model DR454 blower. Four observation/radius of influence monitoring wells.

Results and Next Steps:

Results to date:		During installation six horizontal SVE wells were added underneath the new building's concrete basement. System was shut down in December 2007 and removed when asymptotic levels were reached. No significant rebound was seen in groundwater contamination at the site. A secondary source remains from the city sewer line in Santa Fe.
Next Steps:		Continue groundwater monitoring. Possible remediation around the secondary source.

Costs:

Cost for Assessment:		$27,798.80
Cost to Design and Implement:		$86,841.60
Cost for Operation and Maintenance:		Roughly $5000-$7000 per year.
Total Costs for Cleanup:

Lessons Learned:

Lessons Learned:

The SVE wells were installed during other construction activities onsite making access to the new building basement easier.

Contacts:

Principal Point of Contact:

Joseph Dom, P.G. Landfill / Drycleaner Remediation Unit Bureau of Environmental Remediation 1000 SW Jackson St, Suite 410 Topeka, KS 66612-1367 (785) 296-4367 (voice) (785) 296-4823 (fax)

Site Specific References:

Site Specific References:

Images:

Images of Site: