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Sequoia 404 N CLane <br /> Walnut Geek.CAA 94598 <br /> 4 _ _� (925)988-9600 <br /> Analyt1Ca1 FAX(975)988-9673 <br /> Gettler-Ryan-Dublin Client project Ib Unocal Clrclle K 88#1205, Lathrop Sampled Jul 1'6,-199,9, . <br /> ,6747 Sierra Court, Suite J Sample Matrix Water Received Jul 16, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Aug 3, 1999 <br /> f Attention Deanna Harding First Sample# 907-1248 <br /> .,s" .. ' ,x '*• , ,,. • "c , ' ''' 3 ^. ,. > ,. ,amu., r n z-:,;...,"«o`�:- <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX/ MTBE _ <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I.D I D. J.D. I.D. I.D. <br /> Ng/L 907-1248 907-1249 907-1250 907-1251 907-1252 <br /> TB-LB MW-1 MW-2 MW-3 MW-4 <br /> Purgeable <br /> Hydrocarbons 50 N D 67,000 22,000 10,000 290 <br /> Benzene 050 N D 380 160 N D 11 <br /> Toluene 050 N D 1,500 130 N D N D <br /> Ethyl Benzene 050 N D 2,900 1,200 380 54 <br /> Total Xylenes 050 N D 17 000 3,300 200 85 <br /> MTBE 25 N D 1,400 1,400 N D N D <br /> Chromatogram Pattern -- Gasoline Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 400 200 100 20 <br /> Date Analyzed 7/23/99 7/23/99 7/23/99 7/23/99 7/26/99 <br /> Instrument Identification HPA HP-4 HP-4 HP-4 HP4 <br /> Surrogate Recovery, % 91 85 87 89 83 <br /> (aC 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 /> Janne Fegley <br /> oject Manager — ----- — _ -- --- ---- — <br /> 9071248 GET <1> <br />