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2.0 BACKGROUND <br /> 2.1 SITE SETTING/HISTORY <br /> The Site is located within the City of Stockton,California,in San Joaquin <br /> County. It is located within one-half mile of the Port of Stockton on the <br /> Stockton Deep Water Channel (Figure 1). The San Joaquin River is located <br /> just northwest of the project Site and West Washington Street intersects <br /> with Navy Drive to the south of the Site. Land use in the vicinity of the <br /> Site is predominantly industrial, although a golf course is located <br /> approximately one-quarter mile west,on the opposite bank of the San <br /> Joaquin River. A United States Naval Reservation is also located on the <br /> western bank of the San Joaquin River. Other land uses in the vicinity of <br /> the Site include the Stockton Public Belt Railroad,Unocal,and the United <br /> States Naval Reservation to the north; the Bay Sulfur Company to the east; <br /> and the Western Ash Company to the south (HLA,1997). <br /> The Site is approximately 5 acres and was previously used for fertilizer <br /> storage and manufacturing. The Site consists of areas for dry bulk <br /> storage,a liquid tank farm, and a full-bag storage warehouse(Figure 2). <br /> The Site has been inactive since November 2005 and LESCO no longer <br /> operates the Site as a production center,manufacturing facility,or <br /> distribution center. Prior to LESCO s ownership,two other companies <br /> (TRI Delta Fertilizer,Inc. and Delft Fertilizer) also conducted fertilizer <br /> manufacturing on the Site. <br /> Multiple groundwater monitoring,private,municipal, and irrigation wells <br /> are located within one-half mile of the Site. Those wells were presented <br /> on Table 1 in Workplan For Soil and Groundwater Investigation (ERM, April <br /> 2006). <br /> 2.2 SITE GEOLOGYAND HYDROGEOLOGY <br /> The following paragraphs describe the geology and hydrogeology <br /> encountered beneath the Site, and is based on geologic and hydrogeologic <br /> interpretations from previous investigations. <br /> The Site is situated along the Great Valley physiographic province. The <br /> Great Valley groundwater basin is bounded on the east by the Sierra <br /> Nevada and Cascade Ranges and on the west by the northern extension of <br /> the Coast Ranges. In the Stockton area,the Flood Basin Deposits occur <br /> p 2 LFSCO.INC/006737301-No. 7007 <br />