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KAPREALIAN ENGINEERING, INC. <br /> Consulting Engineers <br /> 535 Main Street <br /> Martinez.Ga.94553 <br /> (415)372.5444 <br /> KEI-J86-031 <br /> September 8, 1986 <br /> Mobil Oil Corporation <br /> P.O. Box 127 <br /> Richmond, CA 94807 <br /> Attn: Mr. Steve Pao <br /> Re: Mobil Oil Bulk Plant in Tracy, California <br /> Report on Remedial Action <br /> Dear Mr. Pao: <br /> Kaprealian Engineering Inc. has completed the remedial <br /> activities at the Mobil-Tracy Bulk Plant located at 500 E. <br /> Grantline Road in Tracy, California. The remedial action has been <br /> designed to mitigate the potential impacts of fuel spills at the <br /> site on the surrounding soil and shallow groundwater. <br /> The remedial measures for the Mobil Tracy bulk plant <br /> consisted of removal and disposal of contaminated ponded water <br /> contained behind the loading service area, excavate fuel stained <br /> soils, placing imported material, removal of 550 gallons tank, <br /> soil sampling, water sampling of the existing E-2 well adjacent to <br /> the loading service area and coordination with the 'local agency. <br /> KEI involvement in thti remedial measure is described in our <br /> proposal dated March 6, 1986. <br /> REMEDIAL MEASURE IMPLEMENTATION <br /> The remedial work was initiated on February 27; 1386.. A <br /> summary of the activities conducted to date is presented in <br /> Table 1. Copies of chemical analyses for soil and .water samples <br /> from the certified laboratory are attached. <br /> __On_Apri1__4, --1986stained contaminated_ soils- were removed -from <br /> the <br /> the areas as shown on the attached sketch. The removal of soil <br /> was conducted under the supervision of Mr. R. Crooks of San <br /> Joaquin County Health Department. Due to presence of many product <br /> lines, the soils were removed manually to minimize any accidental <br /> rupture of product lines and fuel spill. The contaminated soil <br /> excavation was stopped approximately 5 feet below the <br /> groundsurface as no fuel odor was noted at this depth and .the soil.. <br /> was too dense for manual removal. The general consensus based on <br /> field observations were that no further excavation was necessary. <br />