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Striker Avenue Suite 8 <br /> Sequoia 819 Sacramento, CA 95834 <br /> • , (916) 921-9600 <br /> Analytical FAX(916)921-0 100 <br /> r <br /> Gettler-Ryan-Rancho Cordova Project Unocal 0123,Tracy,CA Sampled 1112/00 <br /> 3164 Gold Camp Dr, Ste 240 Project Number N/A Received 1112/00 <br /> Rancho Cordova,CA 95670 Project Manager David Herzog Reported 1/19,27/00 <br /> Diesel Hydrocarbons(CIO-C24) by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0010124 Date Prepared 1113100 Extraction Method EPA 3510B <br /> Blank 0010124-BLK1 <br /> Extractable Hydrocarbons 1113/00 ND mg/1 00500 <br /> Surrogate Pentacosane to 00400 00504 500-150 126 <br /> LCS 0010124-BS1 <br /> Extractable Hydrocarbons 1/13/00 too 0 884 mg/1 600-140 884 <br /> Surrogate Pentacosane 00400 00445 500-150 111 <br /> LCS Dup 0010124-BSD1 <br /> Extractable Hydrocarbons 1/13/00 100 101 mg/l 600-140 101 500 133 <br /> Surrogate Pentacosane 00400 00492 to <br /> 500-150 123 <br /> Batch 0010132 Date Prepared _1/14/00 Extraction Method EPA 3550A <br /> Blwk 0010132-BLKI <br /> table Hydrocarbons 1114/00 ND mg/kg 100 <br /> ogate Pentacosane to0 500 0 533 500-150 107 <br /> LCS 0010132-BSI <br /> Extractable Hydrocarbons 1/14/00 125 -125 mg/kg 600-140 100 <br /> Surrogate Pentacosane 110 500 0 538 500-150 108 <br /> Matrix Spike 0010132-MSI 5001087-01 <br /> Extractable Hydrocarbons 1114100 125 821 237 mg/kg 500-150 124 D <br /> Surrogate Pentacosane 0 500 ND 500-150 ND 5 D <br /> Matrix Spike Dup. 0010132-MSD1 5001087-01 <br /> Extractable Hydrocarbons 1/14100 125 821 216 mglkg 500-150 107 500 147 D <br /> Surrogate Pentacosane 0 500 ND 500-150 ND 5D <br /> Sequoia Analytical-Sacramento *Refer to end ofreport for text of notes and definitions <br /> Page 10 of 17 <br />