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n ip,cog <br /> IAN 2OQ7 <br /> E UfRO NklENT HEALTH <br /> PERMIT/SERVJCFS <br /> FOOTHILL <br /> ENGINEERING <br /> 8442 PH:(916RIDGE <br /> 729 5184 YFAX{996729-0593 5843 <br /> January 26, 2007 <br /> Mr. Michael Infurna <br /> San Joaquin County Public Health Service <br /> Environmental Health Department <br /> 304 E. Weber Third Floor <br /> Stockton, CA 95202 Site Code#1038 <br /> Global ID #70607700605 <br /> Subject: Michael D. & Sharon Olivarez Property at 300 S. California St. Stockton, Ca. <br /> Fourth Quarter Site Monitoring Event, 12/8106 <br /> Dear Mr. Infurna: <br /> Please find below the report covering the fourth quarter site monitoring activities on the above stated <br /> property. <br /> FOURTH QUARTER 2006 MONITORING WELL SAMPLING REPORT <br /> Site History <br /> Five fuel USTs and one used motor oil tank were removed by Jim Thorpe Oil in November 1992 <br /> under a permit from the PHS/EHD. Soil samples taken from under the USTs and the dispensing <br /> equipment indicated the presence of hydrocarbons. Spoil from the excavation was found to contain <br /> hydrocarbon contamination. <br /> The Clearwater Group submitted a work plan to install three soil borings with monitoring wells <br /> constructed in the same boring. The work described in the Clearwater Work Plan was completed <br /> 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 <br /> wells'MW-1 and MW-2 continue to contain high levels of gasoline contamination.MW-3 has much <br /> lower 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 <br /> a <br />