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680 Chesapeake Drtve Redwood City CA 94063 (650)364-9600 FAX(650)3649233 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)888-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 19 16)9Zt-9600 FAX(916)92t-0100 <br /> 1455 McDowell Blvd North,Ste D Petaluma,CA 94954 (707)79Z-1865 FAX(707)792-0342 <br /> Analytical 1551 industrial Road San Carlos CA 94070-41 11 (650)232-9600 FAX(650)23Z-9612 - <br /> *� . G v..}V s v nvv w ' tit's • �^ee` s..,.s an sA .. ri uAw+L` <br /> ettler-Ryan-bublin" r�Client Pioject Ib Unocal'SS#5098, Stockton' x Sampled "Jun 17, 1999`r <br /> fSierra Court, Suite J Sample Matrix Water Received Jun 18, 1999 ; <br /> lin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 30, 1999 <br /> ttention Deanna Harding First Sample# 906-1562 �{ <br />♦ . 1 v r r s G k�N�v Guru ♦..:'+Y4rr�-ter ti e [t+.[-+�GYIX rYnt)�[[Gµr }.n4Yo'.Y r ~^r. .}Si kv .. w..n 4 N'7r~ k iv4��.. s rir . r. k ::rwa{++Y+IN..�Z <br /> I <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> 1 Analyte Limit LD I D. I D. I.D. I.D. I D. <br /> pg/L. 906-1562 906-1563 906-1564 906-1565 906-1566 906-1567 <br /> TB-LB MW-10A MW-10 MW-1 i MW-12 MW-13 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 23,400 550 N D <br /> Benzene 050 N D N D N D 6,000 23 N D <br />' Toluene 050 N D N D N D 250 N D N D <br /> Ethyl Benzene 050 N D N D N D 250 61 N D <br /> Total Xylenes 050 N D N D N D 1,900 N D N D <br /> Chromatogram Pattern Gasoline Gasoline <br /> I <br /> uality Control Data <br /> Report Limit Multiplication Factor 10 10 10 200 10 10 <br /> ate Analyzed 6/25/99 6/25/99 6/25/99 6/25/99 6/25/99 6/25/99 <br /> nstrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 89 89 89 97 89 92 <br /> (QC Limits = 70-130%) <br /> rgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> alytes reported as N 0 were not detected above the stated reporting limit <br /> USEQUOIA ANALYTICAL, #1271 <br /> �1�v 1 wt✓�C-t � <br /> anne Fegley <br /> Protect Manager <br /> 9061562 GET <1 <br />