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Site Background Information <br /> FIVE STAR MARINA(West) <br /> 345 Yosemite Street, Stockton, California <br /> During the course of a Phase I Environmental Site Assessment for a real estate evaluation, AGE <br /> researched the site history,conducted a review of available historic public records,and interviewed <br /> the current land owner and representatives. The history of the parcel of interest was derived from <br /> the Phase I research. <br /> In accordance with the San Joaquin County Environmental Health Department (SJCEHD) email <br /> directive, dated August 2008, the former Five Star Marina project was divided into two project <br /> investigations to individually assess the eastern and western unauthorized tank releases located at <br /> the site. <br /> This site background presents a chronology of previous environmental assessment of the former <br /> western UST location. However, the assessments performed at the former eastern UST area are <br /> included in Part II of this appendix;site description and regional ground water are applicable to both <br /> areas. Results of soil and grab ground water samples from western and eastern site investigations <br /> are summarized in Tables Al and A2 of this appendix, respectively. Locations of the soil probe <br /> borings are illustrated on Figure 2. <br /> SITE DESCRIPTION <br /> The site is located in an industrial area of low topographic relief, approximately '/4-mile east of the <br /> intersection of Fremont Street and Pershing Avenue at an elevation of approximately 10 feet above <br /> mean sea level(MSL). Two main clusters of structures are located on the property(Figure 2). Most <br /> of the site was used as a ship building warehouse from the early 1910s through the mid 1980s. The <br /> remaining portions are presently occupied by an auto repair shop, a sheet metal shop, and a boat <br /> storage facility. The site is currently operated by Five Star Marina and other light industrial <br /> businesses. The surface of the site is generally covered with asphalt and concrete. <br /> REGIONAL GROUND WATER <br /> Based on data collected by AGE during quarterly ground water monitoring events conducted from <br /> January 1998 to the present, the average depth to ground water at the site is approximately 8 feet <br /> below surface grade (bsg). The prevailing ground water flow direction in this portion of western <br /> Stockton is generally toward the northeast, while localized ground water flow may vary during <br /> winter/summer cycles. <br /> Advanced GeoEnvironmental,Inc. <br />