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OCT 02 '95 14:05 SEQUOIA ANALYTICAL P 4 <br /> Sequoia r <br /> 680 Chesapeake i3rvt Redwood Gry CA 9 (41 S) 364-9600 Fqa((413)364-9233 <br /> 4D- 41111"Lane WAnut Creek,CA 94598 (510) 988 9600 FAX(SID)988-9673 <br /> �IAnalytical 819 Stdkcr Avenue Sw3ce a Sacramento,CA 95834 (916) 921 9600 FAX(916)921.0100 <br /> 7Rtece?ved <br /> Touchstone Developments Client Project ID Chevron 9-1452 Sep 27, 19955607 Balboa Dnve Sample Matra. Solid Sep 28, 1995 <br /> Oakland, CA 94611 Analysls Method EPA 6015 Mod/8020 Oct 2, 1995entlen Robert Mallo First Sam I� 950 IOO-07 � <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Semple Sample Sample <br /> Analyte Limit I D. I D. I.D. I.D. I.D. I.D. <br /> mg/kg 9509100-07 969100-08 9509100-09 9509100-10 9509100-11 3509100.12 <br /> T".11 0 T4-6-11 0 P-13 0 P-23.0 P-3-3 5 P-43.0 <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D N D N D N D <br /> Benzene 00050 N D N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D N D- N D <br /> Ethyl Benzene 0 0050 N D N D N D N D N D N.D <br /> Total Xylenes 00050 N D N D N D N D N D N D <br /> Chromatogram Pattern •- .. .- -- -- <br /> GualU Control Data <br /> eport Umft <br /> Multiplication Factor, 10 10 10 1.0 10 10 <br /> Date Analyzed 9/28/95 9/28/96 9/28/96 9/28/95 9/28/95 9/29/95 <br /> Instrument ldentfication GCHP6 GCHP6 GCHP6 GCHP6 GCHP6 GCHP6 <br /> Surrogate Recovery, % 104 100 96 107 74 109 <br /> (OC umns = 70-130%) <br /> Purgeable Fydreearbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected aWve the stated reporting limit <br /> &EQUOIA ANALYTICAL. <br /> 60— <br /> Mark J Cargasace 1 <br /> Project Manager 95MM M <s, <br />