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QUARTERLY REPORT <br /> October 1995 <br /> Art & Artists <br /> 204 East Lodi Avenue <br /> ' Lodi, California <br /> ' 1.0. INTRODUCTION <br /> In accordance with a request from Ms. Mary Lehr,Advanced GeoEnvironmental, Inc. (AGE) has <br /> prepared this Quarterly Report of field activities conducted at 204 East Lodi Avenue in Lodi, <br /> California. Quarterly ground water monitoring procedures were performed in October 1995 and <br /> monitoring activities for the in-sitar soil vapor extraction and air sparging were conducted throughout <br /> ' the entire fourth quarter of 1995. The location of the site is illustrated in Figure 1 -Location Map. <br /> A plan of the site is illustrated in Figure 2 -Site Plan. <br /> The monitoring activities were performed in accordance with guidelines for investigation of <br /> underground storage tank(UST) sites established by the San Joaquin County - Public Health Services <br /> - Environmental Health Division (PHS-EI-1D) and Central Valley Regional Water Quality Control <br /> Board (CVRWQCB). <br /> 2.0. BACKGROUND <br /> 2.1. UNDERGROUND STORAGE TANK REMOVAL <br /> A single 550-gallon UST was removed from the site in January 1987 by Thorpe Oil, Inc. The UST <br />' contained leaded gasoline, and was located inside the existing structure, near the building's southeast <br /> comer(Figure 2). Total petroleum hydrocarbons quantified as gasoline(TPH-g) and volatile aromatic <br /> hydrocarbons(benzene, toluene, ethyl benzene and xylene: BTE&X)were detected in a soil sample <br /> 1 collected beneath the UST. Subsequently, the PHS-EHD required further investigation at the site to <br /> determine, if ground water had been impacted by the release. <br />' <br /> 2.2. MONITORING WELL INSTALLATION <br /> Between July 1987 and 1993, eight ground water monitoring wells were installed at the site. Analysis <br /> of soil samples collected during the installation of the wells indicated that impacted soil was limited <br /> to the vicinity of the former UST. <br />' 2.3. QUARTERLY GROUND WATER MONITORING <br /> . Wells MW-1 through MW-3 were initially sampled and analyzed for TPH-g on 13 August 1987. <br /> These wells were again sampled on 08 September 1987 and analyzed for BTE&X. No further <br />