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ii <br /> 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 Name:Olivarez Property-Stockton Sampled:03-23-12 <br /> 8442 Story Ridge Way Lab Reference Number:1203108 Received:03-26-12 <br /> Antelope,CA 95843 Sample Description,Water Extracted:04-03-12 <br /> Attn:Mike Vlach Sample Prep/Analysis Method:EPA 5030/8015,8020 Analyzed:04-03-12 <br /> Lab Numbers:1203108-01,02,03,04,05 Reported:04-04-12 <br /> TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW-1 MWAR MW-2 MW-2R MW-3 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 0.50 28 190 710 44 ND <br /> TOLUENE 0,50 0,90 380 ND NO NO <br /> ETHYLBENZENE 0,50 14 920 1300 180 NO <br /> TOTAL XYLENES 0,60 12 1300 1100 120 ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 620 9000 14000 3400 ND <br /> Report Limit Multiplication Factor: 1 50 100 10 1 <br /> Surrogate%Recovery: FID:22OV.I PID:138-A FID:1307.1 PID:134% FID:115-/.1 PID:11"A FIN 175%1 PID:138% FID:512% PID:101% <br /> Instrument ID: HP-GCI HP-GCI HP-GCI HP-GC1 HP-GCI <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 13Y; Cp <br /> -James C.'ft s for- or <br /> tory <br /> Vlror� <br /> -V <br /> ips ( <br /> Clad J.Cone./qLboratory Manager <br /> 74of82 <br />