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i <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone (209) 384-2930 <br /> Certificate 112079 Fax (209) 384-1507 <br /> Advanced Geo Environmental, Inc Client Project ID Nomellini Construction Sampled 5-14-97 <br /> I of Northern California Reference Number 1121 Received 5 16-97 <br /> 1803 West March lane, Suite A Sample Description Water Extracted 5 20-97 <br /> Stockton CA 95207 Sample PreplAnalysis Method EPA 5030/8015, 8020 Analyzed 5 20-97 <br /> Attn Tim Cuellar Lab Numbers 1121-6W, 7W, 8W, 9W Reported 5-27-97 <br /> I <br /> I TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 6 MW-7 MW 8 MW-9 <br /> (ug/L) (ug/L) (uglL) (ug/L) (ug/L1 <br /> MTBE 0 50 ND ND ND ND <br /> BENZENE 050 0 65 240 ND ND <br /> TOLUENE 0 50 ND 33 ND ND <br /> ETHYL BENZENE 0 50 ND 44 ND ND <br /> TOTAL XYLENES 050 ND 100 ND ND <br /> I GASOLINE RANGE <br /> HYDROCARBONS 50 62 2100 ND NO <br /> IReport Limit Multiplication Factor 1 10 1 1 <br /> non gasoline <br /> pattern <br /> I <br /> Surrogate % Recovery FID 101%1 PID 101% FID 133%1 PID 120% FID 104%l PID 103 FD 98 5%1 PID 98 4% <br />' Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br />' Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit m Reporting Limit x Report Limit Multiplication Factor <br /> ANALYST l(� APPROVED BY �/LZZ <br /> Clan J Cone mei'c PhI111ps <br /> Environmental Lab Director <br />