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Squo,' 680 Chesapeake Drive Redwood City CA 94063 (650)3649600 FAX(650)3649233 <br /> ea404 N Wcget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> Analytical <br /> � i��� 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> A [ti 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> '*- Sequoia Analytical-San Carlos Client Project ID L905525, Blaine (Chevron) Sampled May 25, 1999 <br /> 1551 Industrial Road Sample Matrix Water Received May 26, 1999 <br /> San Carlos, CA 94070 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 17, 1999 <br /> Attention Mike Gregory First Sample # 906-0223 <br /> QC Batch Number GCO60499802005A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D <br /> Mg/L 906-0223 906-0224 906-0225 906-0226 Method <br /> C-1 C-2 C-3 TB Blank <br /> Purgeable <br /> Hydrocarbons 50 89 N D N D N D N D <br /> Benzene 050 N D N D N D N D N D <br /> Toluene 050 N D N D N D N D N D <br /> Ethyl Benzene 050 077 N D N D N D N D <br /> iTotal Xylenes 050 N D N D N D N D N D <br /> MTBE 25 58 72 ND ND ND <br /> Chromatogram Pattern Gasoline - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 1 0 1 0 1 0 <br /> Date Analyzed 6/4/99 6/4/99 6/4/99 6/4/99 6/4/99 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 85 92 93 88 120 <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 /> *h 'fie Westwater <br /> Project Manager <br /> 9060223 SSS <1> <br />