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CECChUNI CECCNINI,AND GIOVANNOM,FUEUNG ISLAND <br /> 100 micrograms per liter (ug/l) TPH as gasoline and BTEX were reported as non-detect in <br /> UST-1 Hydrocarbons in the ground water sample from UST-2, UST-3 and the duplicate sample <br /> from UST-2 were reported as non-detect. The ground water sample from UST-4 contained TPH- <br /> G at a concentration of 68 ug/1 and TPH-D at 58 ug/1 The ground water sample from UST-4 <br /> also contained toluene at 1.1 ug/1, ethylbenzene at 0 80 ug/1 and xylenes at 5.8 ug/l. Benzene <br /> was reported as not-detected in the ground water sample from UST-4 <br /> 4.3.2 TIDES CUSSID`N <br /> The aversround water elevation calculated for the site h <br /> average g as increased approximately three feet <br /> relative to that reported for March 1995 (First Quarter 1995) This increase is likely due to <br /> seasonal precipitation Ground water flow direction at the site has generally been to the northeast <br /> in recent quarters This flow direction is similar to regional flow direction interpreted from San <br /> Joaquin County Spring 1994 Ground Water Report Maps (San Joaquin County Flood, 1994) The <br /> less distinct flow pattern observed this quarter may be due to local pumping influences as well as <br /> precipitation factors <br /> BTEX was not detected in ground water from UST-1 this quarter Diesel has continued to <br /> decrease systematically in ground water from UST-1 and is beginning to approach the method <br /> detection limit <br /> Q 4.4 GROOM WATER ER R ECOVIERY (IIN'IC'IEEUM R EME DIIA'I GN) <br /> i <br /> As a result of the continued detectable TPH in well UST-1, interim remediation was initiated for <br /> this site in the Third Quarter of 1993 This quarter Mr Robert Ceechini performed bi-weekly <br /> evacuation of water from Well UST-1 for a period of three months from April through June <br /> 1995 He performed the following tasks each visit <br /> a Measured water and product levels in the well UST-1 using an electric water level <br /> sounder and recorded the data <br /> Evacuated approximately 55 gallons of water from well UST-1 approximately eve two <br /> i'Y <br /> weeks using an electric submersible pump The volume of water pumped from the well <br /> was recorded <br /> F 16925400120M95 RPT 6 Environmental Science&Engineenng,Inc <br />