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5FOOTHILL <br /> I <br /> XC:Lo 2X 10 I <br /> ENGINEERNG <br /> 8442 STORY RIDGE WAY ANTELOPE,CA 95843 <br /> PH:(916)729-5 .(91 6)729-0593 <br /> 10 April 16, 2012 <br /> Mrs.Lisa Medina, RENS <br /> San Joaquin County Public Health Service <br /> Environmental Health Department <br /> 15 600 East Main Street <br /> Stockton, CA 95202-3029 Site Code#1038 <br /> Global ID#T0607700605 <br /> Subject: Michael D. & Sharon Olivarez Property at 300 S. California St. Stockton, Ca. <br /> 20 Fist Quarter 2012 Monitoring Report. <br /> Dear Mrs. Medina: <br /> Please find below the report covering the first quarter 2012 monitoring activities on the above <br /> stated property. <br /> 25 <br /> FIRST!QUARTER 2012 MONITORING REPORT <br /> 1. SITE HISTORY <br /> Five fuel USTs and one used motor oil tank were removed by Jim Thorpe Oil in November 1992 <br /> 30 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 <br /> contain hydrocarbon contamination. <br /> The Clearwater Group submitted a work plan to install three soil borings with monitoring wells <br /> 35 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 /> 40 <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. <br /> 1 of 82 <br />