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Cees!", CeecW .and Glovww-d,F—ling Iskind <br /> 2o0 DndWowmd <br /> 2.n Site Regis <br /> ' at 3535 East Cherokee )Road site). The <br /> The site is bated an east Stockton, Calafornaa <br /> site is at an approximate elevation of 25 feet above mean sea level and the topography of <br /> the area is relatively flat (USGS, 1965). The sate is situated in a commercial district. To <br /> the north of the site is a truck repair shop, to the east is State Highway 99, and to the <br /> west a truck scale and vacant lot. The Stockton Diverting Canal is approximately 2,200 <br /> feet to the southwest of the site. <br /> One well, designated UST-1 was installed in 1990, three new wells designated UST-2, <br /> UST-3, and UST-4 were installed m 1995 and one new well designated UST-5 was <br /> installed in 1996. These five wells are located in the fueling island area (Figure 2 - Site <br /> Map). Well UST-1 had problems with infiltration of fuel from the surface and its seal <br /> was repaired twice in 1993. The vault box was repaired in Larch 1995. An internal <br /> sealing cap now secures the well from surface infiltration. <br /> In October 1992, ESE implemented a quarterly monitoring program that includes the <br /> Ul measurement of ground water elevation and collection of ground water samples from well <br /> UST-1. Ground water recovery from UST-1 began in 1993 as a voluntary interim <br /> remedial measure. As of July 1, 11993 the monitoring program also included water level <br /> measurements in three additional ground water monitoring wells (SI-1, SI-2, and SI-3) <br /> located in the northern portion of the site and two water supply wells, the "large well <br /> aand "small" well (see Figure 2 - Site Map). <br /> In an effort to ascertain the sive of the potential hydrocarbon plume at UST-1, three new <br /> monitoring wells were installed at the site on April 4, 1995. The three additional <br /> monitoring wells were proposed in a Workplan dated September 19, 1994 by ESE to <br /> further monitor hydrocarbons in ground water beneath the fuel island. An addendum to <br /> the 'Workplan dated January 24, 1995 was prepared to document changes in the location <br /> of the wells per a letter dated December 5, 1994 from Mr. Michael. Infurna of the <br /> SJCEHD. The permit for monitoring well installation was approved on March 22, 1995. <br /> f 1692540OWy rptl4gtr96 rpt 2 EnWrmo stal Science do Enslneemg,Inc <br />