Laserfiche WebLink
.,. <br /> } MURRAY & ASSOCIATES <br /> ENVIRONMENTAL SERVICES <br /> February 2, 1990 <br /> Harlen Knoll <br /> San Joaquin County Health Department . <br /> Environmental Health Division <br /> P.O. Box 2009 FEB 6 12, <br /> Stockton, CA 95201 -'' rp, <br /> Y/ tRVrGt-o <br /> Dear Mr. Knoll: <br /> Re: Groundwater and Soil Contamination Assessment Workplan - Stan Morri Ford <br /> Dealership - Tracy, California <br /> Murray & Associates is forwarding for your review and consideration the following <br /> proposal to conduct a groundwater and soil contamination assessment at the Stan Morri <br /> Ford Dealership, 104 West 11th Street, Tracy, California. The contamination assessment <br /> proposed herein will accommodate all regulatory concerns. Also attached is a completed <br /> permit application for the construction of the proposed groundwater monitoring wells, and <br /> a check for $35.00. <br /> The purpose of the assessment is to determine the lateral and vertical extent of <br /> groundwater and soil contamination in the proximity of the facility's former 200 gallon <br /> waste oil tank. Approximately 100 cubic yards of contaminated soil was removed for off- <br /> site disposal on January 16 and 17, 1990. A Tank Excavation Assessment Report which <br /> describes the soil remediation activities and summarizes the analytical results of both soil <br /> and groundwater sampling from the excavation has been prepared and will be forwarded <br /> to your office shortly- <br /> GROUNDWATER CONTAMINATION ASSESSMENT <br /> Because minor groundwater contamination has resulted from the seepage of waste oil <br /> through the vadose zone soils, Murray & Associates proposes to install three groundwater <br /> monitoring wells in the locations shown on Figure 1. Detail lithologic logs will be kept on <br /> each boring and soil samples will be collected by driven sampler at 5 foot intervals. Each <br /> soil sample will be screened in the field using an HNu photoionization detector capable <br /> of detecting the presence of toluene. Samples from each 5-foot interval will be <br /> appropriately sealed and packed on ice for potential later chemical analysis. <br /> 2252 Fort Point Drive, Gold River, CA 95670 (916) 635-0639 • FAX (916) 852-1411 <br />