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1�? Report: Groundwater-quality Monitoring—May 30, 2001: 7500 West Eleventh Street, Tracy, C4. Page I 1.0 INTRODUCTION y• This groundwater-quality monitoring report has been prepared for the site of a former fueling station at 7500 West Eleventh Street, Tracy, California. The fueling station ceased operation in 1998, and, in December of that year, eight underground fuel tanks were removed from the property. At that time, it was found that soil and groundwater beneath the site were affected by fuel hydrocarbons. A site characterization investigation completed in May 2000 included installation of seven groundwater-quality monitoring wells. A first round of groundwater-quality sampling and analysis using the wells was conducted on May 11, 2000. A second round was conducted on November 28, 2000 (The San Joaquin Company 2001a). The subject of this report is the third round of sampling conducted on May 30, 2 00 1. 1.1 Site Location The subject property is situated at 7500 West Eleventh Street, Tracy, California, at the intersection of Chrisman Road with West Eleventh Street. That location is shown on j Figure 1. Its elevation is between 48 and 51 feet above mean sea level (MSL). 1.2 Site Code 1 The San Joaquin County Public Health Services, Environmental Health Division _.� (SJCPHS) has established the following identifier for the subject site: Site Code 1392. 1.3 Background The property at 7500 West Eleventh Street was used as a fueling station for trucks and _J} other vehicles from circa 1930 until 1998. Over that period, the station was owned and operated by a number of entities. The property is also the site of a restaurant and a r` disused public truck scale. The locations of the fueling station infrastructure, the restaurant, and the truck scale are shown on Figure 2. Mr. Carl B. Navarra and Mrs. Annamae F. Navarra, et ux (the Navarras) purchased the property on October 31, 1979 from Ms Meridall Sue Tiago, the window of Joseph L. Tiago, Jr. In 1980, Jack Anastasio and Jim Meservy leased the property. For the next two years it was leased from the Navarras by Charles L. Profito (d.b.a. C & M Truck Service). Jeri Fisher (d.b.a. Tracy Auto/Truck Plaza) leased the property from January 1, 1983 until January 31, 1992. Starting on February 15, 1992, the property was leased by Mel Bokides Petroleum, Inc. (Bokides), and was subleased to Mr. Jodha Singh Gill and Mrs. Tirath Kaur Gill, et ux(the Gills) who operated the Olympian Service Station on the site. That lease and sublease were relinquished by Bokides and the Gills, respectively, in late 1998, and the Olympian station ceased operation. No fuel dispensing or service station operations have been conducted on the site since that time. (The San Joaquin Company 2001 b.) sic