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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(654)364-9233 � <br /> Sequoia 404 N Wiget 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 1455 McDowell Blvd North Ste b Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650) 232-9612 <br /> 0equoia.Analytical Client Project Ib L905535-TRMI EH&S Sampled May 25, 1999 <br /> 1551 Industrial Blvd Sample Matrix Water Received May 26, 1999 <br /> San Carlos, CA 94070 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 21, 1999 <br /> Attention Mike Gregory First Sample # 906-0199 <br /> CC Batch Number GC060399 GCO60399 GCO60399 GC060399 GCO60399 GCO60399 <br /> 802002A 802002A 802002A 802002A 802002A 602004A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D I D <br /> pg/L 906-0199 906-0200 906-0201 906-0202 906-0203 906-0204 <br /> MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 <br /> Purgeable <br /> Hydrocarbons 50 220 400 4,800 230 N D N D <br /> Benzene 050 44 120 770 35 N D N D <br /> Toluene 050 N D 36 130 14 N D N D <br /> Ethyl Benzene 0 50 0 73 11 190 6 3 N D N D <br /> Total Xylenes 050 75 51 530 30 N D N D <br /> MTBE 25 53 ND 110 63 68 ND <br /> Chromatogram Pattern Gasoline Gasoline Gasoline Gasoline -- -- <br /> Quality Control Data <br /> Reporting Limit <br /> Multiplication Factor 1 0 1 0 10 1 0 1 0 1 0 <br /> Date Analyzed 06/03/99 06/03/99 06/03/99 06/03/99 06/03/99 06/03/99 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-4 <br /> Surrogate Recovery, % 99 104 * 107 94 90 <br /> (QC 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 Please Note <br /> *Surrogate recovery above control limit due to coeiution <br /> arlie Westwater <br /> Project Manager <br /> 9060199 SSS <1> <br />