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v 1117 Lone Palm Avenue, Suite B <br /> Modesto, CA 95351 <br /> www.atc-enviro.com <br /> 209.579.2221 <br /> ASSOC I A T E S I NC . <br /> Fax 209.579.2225 <br /> October 24, 2003 <br /> 54.05257.5406 <br /> Ms. Margaret Lagorio <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, 3`d Floor <br /> Stockton, California 95202-2708 <br /> Subject: Workplan for Limited Phase II Subsurface Investigation at 221 East Channel <br /> Street, Stockton, California <br /> Dear Ms. Lagorio: <br /> ATC Associates Inc. has prepared this workplan, on behalf of Guaranty Bank for the <br /> performance of subsurface investigation activities at the facility located at 221 East Channel <br /> Street in Stockton, California (Figure 1). The purpose of the subsurface investigation is to <br /> evaluate the presence of impacted soil, if any, in the immediate vicinity of a solids separator at <br /> the subject site. The work is being done at the request of Mr. Michael Saffell of Guaranty Bank. <br /> The scope of work includes planning and scheduling,advancing one soil boring and collecting a <br /> soil sample, laboratory analysis of the soil sample, and preparing a letter summary report. The <br /> scope of work is described in detail in the following paragraphs. <br /> SITE LOCATION <br /> The site is located on the north side of East Channel Street to the east of North Hunter, as shown <br /> on Figure 1. The location is in a commercial area. A San Joaquin County Special Education <br /> facility currently occupies the site. <br /> BACKGROUND <br /> The site building housed Sutter Laundry from at least 1950 to approximately 1963. A solids <br /> separator, also commonly called a sand-water separator, was installed along an outgoing sewer <br /> line from the laundry facility in order to separate lint, particulate dirt, and undissolved detergents <br /> from the outgoing water stream prior to drainage to the public sanitary sewer system. Three <br /> open-topped sump tanks approximately three feet square and five feet deep, connected near their <br /> tops via pipes, comprise the solids separator, which was not removed when the laundry closed in <br /> the early 1960's. <br /> w:\enviromental\05257\wkp.doe 1 <br /> ENVIRONMENTAL, GEOTECHNICAL AND MATERIALS PROFESSIONALS <br />