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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:1203108-06,07,08,09,10 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-3R MW-5 MW-6 MW-7S MW-8S <br /> (ug1L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 0.50 NO 300 NO NO 180 <br /> TOLUENE 0.50 NO 5.4 NO NO 34 <br /> ETHYL BENZENE 0,50 NO 13 1L8 NO 560 <br /> TOTAL XYLENES 0.50 NO 12 0,74 NO 990 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 NO 2300 88 NO 5200 <br /> Report Limit Multiplication Factor: 1 10 1 1 20 <br /> Surrogate%Recovery: FID.86 214 1 PID,06VA F40'14a%1P1D 118% FID:101%/PI0:104% FID:01,1%tPID:98.5% FID:124% P11):I 11% <br /> Instrument ID: HP-GC1 HP-GC1 HP-GC1 HP-GC1 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 /> James C.phillips ratory Director or <br /> Clari J.Cone/L foratofy Manager <br /> 75of82 <br />