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FOOTH <br /> FIRING <br /> } 12793 PADDY CREEK LANE LODI. CA 95240 <br /> JAN 2 2 20OZ PH. (209) 368-9381 FAX (209) 367-1163 <br /> ENVIRONMENT HEALTH <br /> PERMIT/SERVICES January 15, 2002 <br /> Mr. Michael Infurna <br /> San Joaquin County Public Health Service <br /> Environmental Health Division <br /> 301 E. Weber Third Floor <br /> Stockton, CA 95202 <br /> Site Code 41038 <br /> Global ID 9T0607700605 <br /> Subject: Michael D. & Sharon Olivarez Property at 300 S. California St. Stockton, Ca. <br /> Monitoring Well Sampling Report <br /> Dear Mr. Infurna: <br /> Please find belowthe reportcovering fourth quarter monitoring activities on the above stated property. <br /> FOURTH QUARTER 2001 MONITORING WELL SAMPLING REPORT <br /> Site History <br /> Five fuel UST's and one used motor oil tank were removed by Jim Thorpe Oil inNovember 1992 under <br /> a permit from the PHS/EHD. Soil samples taken from under the UST's and the dispensing equipment <br /> indicated the presence of hydrocarbons. Spoil from the excavation was found to contain hydrocarbon <br /> contamination. <br /> Clearwater Group submitted a Work Plan to install three soil borings with monitoring wells constructed <br /> in the same boring. The work described in the Clearwater Work Plan was completed in March of 1995. <br /> The excavation for the removal of the USTs was backfilled by Jim Thorpe Oil in April 1996. The <br /> excavation spoil was used for backfill material. <br /> Foothill Engineering was requested by the owner to sample the three monitoring wells that were <br /> installed by Clearwater at various times and the analysis of those samples is attached. Monitoring wells <br /> MW-1 and MW-2 continue to contain high levels of gasoline contamination. MW-3 has much lower <br /> levels of gasoline contamination (see a recap sheet attached). <br /> On August 23, 1999,the PHS/EHD approved a Work Plan submitted by Foothill Engineering to install <br /> replacement wells for MW#1,MW#2,and MW#3.These replacement wells were installed to correct <br /> the over screen conditions of the existing monitoring wells.Also,included in this Work Plan was the <br /> installation of three CPTs. To date CPT#1, CPT#2 and CP'f#3 have been installed. Soil and <br /> groundwater sarnples extracted during the installation of CPTs indicate gasoline contamination to a <br /> L depth of eighty-five feet (see a recap attached). <br /> 1 <br />