Stanford Saper Cleaners, Kansas City, Missouri

State Coalition for Remediation of Drycleaners Site Profiles

Description
Historical activity that resulted in contamination.

Stanford Saper Cleaners had been a tenant of Brookside Retail Center since 1960. Soil sampling performed in July 1999 confirmed tetrachloroethene was present at the site.

Remediation Status: Site closed

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

Contaminant	Media	Concentration (ppb)
cis-1,2-Dichloroethene	soil	90 ppb
Tetrachloroethene (PCE)	soil	392,000 ppb
Trichloroethene (TCE)	soil	123 ppb

Site Hydrology

Deepest Significant Groundwater Contamination:
Plume Size:
Average Depth to Groundwater:		15ft

Lithology and Subsurface Geology

		Dark brown clay to gray clay Depth: 0-10ft bgs 10ft thick
		Gray clay with rock fragments and shale Depth: 10-14.5ft bgs 4.5ft thick

Pathways and DNAPL Presence

Groundwater

Sediments

Soil

DNAPL Present

Remediation Scenario

Cleanup Goals:

Remediate site to 49 mg/kg cleanup goal in CALM document Scenario A.
In January 2004 new owner submitted a corrective action plan for the site.

Technologies

In Situ Bioremediation

Why the technology was selected:
Potable water with a 2% carbon source such as food grade molasses or corn syrup into the building rock foundation and adjacent soil. An application for a Class V permit was submitted to the Water Protection Division.

Date implemented:
February 10, 2004 was start date to remove floor and debris from the building interior. A drain system will be installed in the excavation prior to backfilling the excavation. System includes trench drain beneath and adjacent to building with fill/injecti

Results to date:
In 2004, 585 cuyd (655 tons) of PCE-contaminated (conc between 0.1 and 40 ppm) soil were sent to landfill. 7500 lbs of PCE-contaminated (conc >40 ppm)soil were incinerated. Total soil removal area approx 35 X 75 ft down to 6 ft bgs. Prior to backfill, a 4-line Enhanced Reductive De-Chlorination (ERD) trench system was installed. The system was designed to saturate soil from 6 to 16 ft bgs with carbon source material.

Next Steps:
ERD injected into fill ports once every 2 weeks until carbon source detected in outlying monitoring well, which took several months. After additional rounds of sampling, site was closed in Oct 2005 with Restrictive Covenant to ensure: (1) site remains commercial use and (2) no domestic use of groundwater.

Ex Situ Soil Removal

Costs

Cost for Assessment:
Cost for Operation and Maintenance:
Total Costs for Cleanup:		Consultant: $70,000 Excavation/Hauling/Disposal: $175,000 ERD Remediation: $105,000 Total: $350,000 (all costs approximate)

Contacts

Christine O'Keefe, Environmental Specialist
Missouri Department of Natural Resources
Hazardous Waste Program/Voluntary Cleanup Program
PO Box 176
Jefferson City, Missouri 65102
(573) 751-7538

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U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

State Coalition for Remediation of Drycleaners Site Profiles