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because declining groundwater levels had left the screened interval of two existing monitor wells <br /> above the groundwater table <br /> The third phase of work was conducted during July 1994, and consisted of completing four soil <br /> borings, collecting two hydropunch groundwater samples, and abandoning the two dry monitor <br /> wells. <br /> The three phases of work are discussed in greater detail below Additional information may be <br /> found in the following reports <br /> • Letter Report by Weiss Associates, May 1987, summarizing UST removals and <br /> groundwater investigation <br /> • Quarterly Monitoring Reports by WESTON, December 1991, August 1992, <br /> November 1992, and January 1993 <br /> ® Soil and Groundwater Investigation Report by WESTON, August 1994, <br /> summarizing monitor well installation, soil bonngs, Hydropunch® sampling, and <br /> well abandonment <br /> 3.1 n986-1987 INVESTIGATION <br /> In 1986, the SJCMVCD removed the three USTs from the site and excavated the soil beneath <br /> the gasoline UST to a depth of 31 ft below ground surface (bgs) A soil and groundwater <br /> investigation, conducted by Weiss Associates on behalf of the SJCMVCD in 1987, consisted of <br /> completion of six soil bonngs and the installation of three groundwater monitor wells (MW-1, <br /> MW-2 and MW-3) to a depth of approximately 50 ft (Figure 2) at the site. <br /> The soil androundwater analytical results from the 1986 tank removals and additional <br /> g y <br /> investigations completed in 1987 are included in Tables 1 and 2 Soil and groundwater samples <br /> were analyzed for total fuel hydrocarbons (TFHC), benzene, toluene, ethylbenzene, xylene <br /> (BTEX), and lead While the analyses identified the presence of petroleum hydrocarbon <br /> compounds in soil to a depth of 31 ft bgs beneath the location of the former gasoline UST, <br /> petroleum hydrocarbon compounds were not detected in groundwater samples from the three <br /> monitor wells Analytical data from soil boring locations B-3 and B-4, as well as Organic Vapor <br /> Analyzer data from MW-2 soil, were non-detect for BTEX and TFHC at the 41 ft. depth. <br /> L\P1t01ECrMSAN10Q\L0D1 ACT 3 15 May 1995 <br />