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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone.- (209)384-2930 <br /> Certificate No.2480 Fax: {209}384-1507 <br /> Foothill Engineering Client Project ID:Olivarez Property-Stockton Sampled:06-02-11 <br /> 8442 Story Ridge Way Lab Reference Number:1106023 Received:06-03-11 <br /> Antelope,CA 95843 Sample Description:Water Extracted:06-07-11 <br /> Attn:Mike Vlach Sample Prep/Analysis Method:EPA 5030/8015,8020 Analyzed:06-07-11 <br /> Lab Numbers: 1106023-01,02 Reported:06-13-11 <br /> TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID <br /> MW-10 MW-11 <br /> (ug1L) (ug/L) (ug/L) <br /> BENZENE 0.50 370 4,0 <br /> TOLUENE 0.50 NO ND <br /> ETHYL BENZENE 0.50 180 NO <br /> TOTAL XYLENES 0.50 61 NO <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 1800 ND <br /> Report Limit Multiplication Factor: . 5 1 <br /> Report Limit Multiplication Factor For BENZENE Only. 20 <br /> Surrogate%Recovery: FID.171%tPID 120-4 FJD:186%/PIP:013% <br /> Instrument ID: HP-GCI HP_GC1 <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> APPROVED BY: <br /> Jarriwt C ZPector or <br /> J. Cone/Laboratory Manager <br />