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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 404 N Wiget Lane Walnut Creek CA 94599 (510) 988 9600 FAX(510)988 9673 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 Ueraghty& Miller, Inc Client Project ID Chevron #9-4275 Sampled Nov 13, 1996 050 Marina Way South Sample Matrix Soil Received Nov 18, 1996 Richmond, CA 94804 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 4, 1996 ttention Cynthia Hilton First Sample# 611-1101 C Batch Number SP112396 SP113096 SP1 12396 SP112396 SP1 12396 SP112396 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA ' TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION Reporting Sample Sample Sample Sample Sample Sample Analyte Limit I D I D I D I D I D I D mg/kg 611-1101 611-1102 611-1103 611-1104 611-1105 611-1106 GM-1@5' GM-1Ca)10` GM-1@15' GM-2@5' GM-2@10' GM-2@15' Purgeable Hydrocarbons 10 ND ND 160 ND ND 220 ' Benzene 00050 ND ND ND ND ND 049 ' Toluene 00050 ND ND ND ND ND 032 hyl Benzene 00050 ND 00066 082 ND ND 21 Total Xylenes 00050 N D N D 070 N D N D 25 1 MTBE 0050 ND 0057 ND ND ND ND (Chromatogram Pattern - Gasoline Gasoline Quality Control Data Report Limit Multiplication Factor 1 0 1 0 50 1 0 1 0 50 Date Analyzed 11/23/96 11/30/96 11/23/96 11/23/96 11/23/96 11/23/96 Instrument Identification HP-5 HP-4 HP-5 HP-5 HP-5 HP-5 Surrogate Recovery, % 108 96 108 112 105 98 (QC Limits = 70-130%) 1 Purgeable Hydrocarbons are quantitated against a fresh gasoline standard (Analytes reported as N D were not detected above the stated reporting limit �UOIA ANALYTICAL, #1271 Please Note Q *Sample was analyzed on 11/27/96 (within hold time) on HP-4 Result was N D at a multiplication factor of 5 Melissa A Brewer (Client Services Representative 6111101 GER c1>