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r � - <br /> 1050 Melody Lane, Suite 160, Roseville, California 95678 <br /> E <br /> �' (976)782 2970 �r(9'16)7867830 <br /> ENVIRONMENTAL, INC. Or <br /> December 15, 1993 <br /> Ms Marla Guensler <br /> Environmental Engineer <br /> Exxon Company, U S A <br /> 2300 Clayton Road, Suite 1250 <br /> Concord, California 94520 <br /> Subject Sod Excavation Results Report <br /> Former Exxon RAS # 7-1050 <br /> 909 Hammer Lane Stockton California <br /> Dear Ms Guensler <br /> Aegis Environmental Inc (Aegis) is pleased to provide this report documenting soil <br /> excavation at the subject site (Figure 1) This report is based in part on information <br /> obtained by Aegis from Exxon Comoany U S A (Exxon) and is subject to mooffication <br /> as newly acquired information may warrant <br /> PURPOSE <br /> The purpose of the work is to obtain site ciosure by removing soils containing residual <br /> petroleum hydrocarbons from a former gasoline underground storage tank basin <br /> BACKGROUND <br /> The site a former Exxon service station is currently vacant and no structures remain <br /> The unperground storage tanks and piping were removed in 1986 and 1990, respectiveiy <br /> Petroleum samples hydrocarbons were noted in soil les collected from excavation and soil <br /> Y P <br /> boring activities at the site since 1985 and vapor samples collected during 1987 and <br /> 1990 soil gas surveys A soil vapor extraction system was operated on the site from <br /> March through April 1992 An estimated 1 ,439 pounds or petroleum hydrocarbons and <br /> 60 pounds of benzene were removed from the subsurface <br /> 93 005A RER <br /> I <br />