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1 <br /> Canepa's Car Wash <br /> 6230 Pacific Avenue, Stockton, California December 30, 1993 <br /> Interim Status Report, Phase II Investigation Page. 4 <br /> 1 samples were tested for 1,1,1, trichloroethane using EPA method 8010 This <br /> compound is being tested for because it was found in the soils spoils pile test <br /> sequence The laboratory analyzing the soil samples was Geo-Monitor, Inc , a <br /> ' State certified laboratory located in Hesperia, California <br /> Soil samples were taken from stockpiled soil removed during soil vapor well <br /> system installation (Figure 3) The six samples were analyzed for TTLC/STLC, <br /> CAM Metals, 8010/8020, TPH-Gas (5030) and TPH-Oil (3550/8015) The results <br /> are shown as Tables 3 & 4, and Appendix A, B & C <br /> 3.5 Groundwater Sampling <br /> A travel blank provided by the laboratory accompanied the sample vials from the <br /> time they were picked up from the lab to the time they were returned to the <br /> laboratory The travel blank and sample vials were transported via Greyhound <br /> Fast Freight to Geo-Monitor, Inc , a State certified laboratory located in Hesperia, <br /> California This travel blank was listed on the Chain of Custody, and was only <br /> analyzed if the samples contained contaminants <br /> All sampling equipment, including the bailer and cables used by sampling <br /> ' personnel, was disassembled and steam-cleaned prior to commencement of <br /> sampling These procedures were followed between each well, sampling point, <br /> and at the end of the sampling day De-ionized or organic-free water (also <br /> provided by the laboratory) was introduced into the bailer as a final stage of <br /> cleaning This water was then gently poured into sample vials to be used as bailer <br /> blanks These bailer blanks were not tested unless their corresponding samples <br /> ' contained contaminants <br /> Immediately prior to sampling, water levels and well depth measurements were <br /> taken in all wells at the site Each was evacuated using a stainless steel bladder <br /> pump which does not introduce air into the water column The pH, temperature <br /> and electrical conductivity of the water were monitored as the well was evacuated <br /> These parameters are noted on the Field Logs (Appendix G) Instruments <br /> calibrated to known standards were used to monitor these parameters At least <br /> _five (S) .yell -.,nlumes ❑ ere evacuated from each well, and more= if necessary, until <br /> the above parameters were stabilized The samples were carefully poured from a <br /> Teflon bailer into half gallon plastic containers and clean glass vials with Teflon- <br /> lined screw caps provided by the laboratory Care was taken to ensure that no air <br /> space existed in the vials by inverting to check for bubbles and re-sampling if <br /> necessary The samples were analyzed or extracted within 14 days according to <br /> their EPA methods Water samples collected for analysis were analyzed by EPA <br />