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w <br /> BIOSYSTEMS <br /> MANAGEMENT <br /> INTERNATIONAL <br /> 883 SNEATH LANE,SUITE 224• SAN BRUNO,CALIFORNIA 94066•(415)589-7171 <br /> May 22 , 1988 <br /> Mr. Dave Carls <br /> San Joaquin Local Health District . <br /> 1601 E. Hazelton Ave. <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Proposed soil contamination <br /> delineation and groundwater <br /> monitoring plan for Stockton <br /> Scavenger facility in <br /> Stockton, CA <br /> Dear Dave: <br /> The following letter proposal is in regards to the soil contamination <br /> delineation and groundwater monitoring program which Biosystems Manage- <br /> ment International (BMI) will implement for Stockton Scavenger at their <br /> operations facility in Stockton, CA. Upon your approval BMI will com- <br /> mence work on the plan outlined below. If you feel that modifications <br /> to the plan need to be incorporated, please feel free to contact me so <br /> that we may discuss them in more detail. The person to contact at the <br /> facility itself is named Jim Walsh. He will be able to answer specific <br /> questions about operations and history of the site in my absence. <br /> SITE DESCRIPTION <br /> The Stockton Scavenger operations facility is located on approximately <br /> 4 .5 acres of land at 1240 Navy Drive in Stockton, CA (Fig 1) . Geograph- <br /> ically, it is situated approximately one quarter mile west of the inter- <br /> section of Interstate 5 and Charter Way in township 1N-range 6E. Section <br /> numbers were not shown on USGS topographical maps. The work to be per- <br /> formed at the site is in response to leaks from two underground storage <br /> tanks which have been excavated and removed from the area. The tanks <br /> contained hydraulic oil and diesel fuel which was used at the site for <br /> fueling of trucks and operation of equipment. The capacities of the <br /> hydraulic oil tank was 500 gallons while the diesel fuel tank held <br /> 1000 gallons. It is unknown how much liquid was released from either <br /> tank. <br /> Previous work performed at the site includes the removal of the leaking <br /> tanks and sampling of soils at various intervals in the immediate vic- <br /> inity of the tanks. Results of the soil samples revealed elevated levels <br /> of benzene, toluene, xylene, diesel and motor oil. <br />