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i <br /> Sequoia 404 N ,CA Lane <br /> C /� 1 Walnut Geek,CA 94598 _ <br /> An all C al - - � - --- - -- - - - _ _ (925)988-9600 <br /> FAX(925)988-9673 <br /> Gettler-Ryan-Dublin Client Project ID Unocal #5886, Stockton Sampled Aug 16-17, 1999 <br /> 6747 Sierra Court, Sude J Sample Matnx Water Received Aug 18, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 14, 1999 <br />�'Attentlon-Deanna Harding�`�`First Sample#�W908373"- ----`--- <br /> TOTAL <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX/ MTBE <br /> Reporting ___ _.-Sample - .-Sample —Sample- _—Sample - -Sample = _= Sample . - --_ <br /> Analyte Limit I.D. LD I.D. I.D. I.D. I.D. <br /> ug/L W908373-01 908373-02 908373-03 908373-04 908373-05 908373-06 <br /> TB-LB MW-1 MW-2 MW-0 MW-40 MW-4S <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D N D N D <br /> Benzene 050 N D N D N D N D N D N D <br /> Toluene 050 ND ND ND ND ND ND <br /> Ethyt Benzene 050 N D N D N D N D N D N D <br /> Total Xylenes 050 N D N D N D N D N D N D <br /> MTBE 25 N D 64 10,000 20,000 4 6 4 3 <br /> Chromatogram Pattern - - - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 20 20 10 1 0 <br /> Date Analyzed 8/27/99 8/27/99 8/27/99 8/27/99 8/27/99 8/27/99 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 89 82 95 94 97 95 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL., #1271 <br /> J Janne Fegley <br /> Project Manager <br /> W908373 GET <1> <br />