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Report: Groundwater-quality Monitoring—September 11,2001: 7500 West Eleventh Street, Tracy, CA. Page 1 <br /> 1.0 INTRODUCTION <br /> Thisgroundwater-quality monitoring report has been prepared for the site of a former <br /> fueling station at 7500 West Eleventh Street, Tracy, California. The fueling station <br /> ceased operation in 1998, and, in December of that year, eight underground fuel tanks <br /> were removed from the property. At that time, it was found that soil and groundwater <br /> beneath the site were affected by fuel hydrocarbons. A site characterization investigation <br /> completed in May 2000 included installation of seven groundwater-quality monitoring <br /> wells. A first round of groundwater-quality sampling and analysis using the wells was <br /> i conducted on May 11, 2000 (The San Joaquin Company 2001c). Additional rounds were <br /> conducted on November 28, 2000 (The San Joaquin Company 2001b) and May 30, 2001 <br /> (The San Joaquin Company 2001a). This report details a fourth sampling round that was <br /> conducted on September 11, 2001. <br /> 1.1 Site Location <br /> The subject property is situated at 7500 West Eleventh Street, Tracy, California, at the <br /> intersection of Chrisman Road and West Eleventh Street. That location is shown on <br /> Figure 1. Its elevation is between 48 and 51 feet above mean sea level (MSL). <br /> ; 1 <br /> 1.2 Site Codes <br /> The California State Water Resources Control Board (SWRCB) has established the <br /> following Global ID code for the site under its Geographic Environmental Information <br /> 'r Management System: <br /> Global ID: T0607700606 <br /> The Regional Water Quality Control Board (RWQCB) — Central Valley Region has <br /> established the following Case Number. <br /> Case Number: 390773 <br /> The San. Joaquin County Public Health Services, Environmental Health Division <br /> SJCPHS has established the following identifier for the subject site: <br /> {. } g J <br /> Site Code: 1392 <br /> 1.3 Background <br /> - The property at 7500 West Eleventh Street was used as a fueling station for trucks and <br /> other vehicles from circa 1930 until 1998. Over that period, the station was owned and <br /> operated.by a number of entities. The property is also the site of a restaurant and a <br /> disused public truck scale. The locations of the fueling station infrastructure, the <br /> restaurant, and the truck scale are shown on Figure 2. <br /> i <br /> sic <br />