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Sequoia 680 Chesapeake Drive Redwood City,CA 9406 (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget(ane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Analytical <br /> Pacific Environmental Group Client Project ID. Unocal, Lathrop, CA Sampled: Nov 10, 1997 <br /> 11315 Sunrise Gold Circle, Ste. M Sample Matrix: Soil Received: Nov 10, 1997 <br /> Rancho Cordova, CA 95742 Analysis Method: EPA 5030/8020, DHS Luft Reported: Dec 3, 1997f:. <br /> Attention: Rusty Benkosky First Sample #: 711-0397 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. <br /> mg/kg 711-0397 711-0398 711-0399 711-0400 711-0401 711-0402 <br /> T-1-S@14' T-1-N@13' T-2-S@13' T-2-N@14' T-3-W@13' T-3-E@73' <br /> Purgeable <br /> Hydrocarbons 1.0 810 1,800 800 130 200 5,800 <br /> Benzene 0.0050 0.52 N.D. N.D. N.D. N.D. 3.6 <br /> Toluene 0.0050 8.4 9.3 6.8 0.10 14 160 <br /> Ethyl Benzene 0.0050 13 9.2 16 1.9 24 110 <br /> Total Xylenes 0.0050 70 75 87 12 210 560 <br /> Chromatogram Pattern: Gasoline Weathered Weathered Weathered Weathered Gasoline <br /> C6-C12 Gasoline Gasoline Gasoline Gasoline C6-C12 <br /> C6-C72 C6-C72 C6-C12 C6-C72 <br /> Quality Control Data <br /> Reporting Limit <br /> Multiplication Factor: 100 500 50 1.0 500 250 <br /> Date Analyzed: 11/18/97 11/18/97 11/19/97 11/19/97 11/18/97 11/18/97 <br /> Instrument Identification: GCHP-2 GCHP-2 GCHP-1 GCHP-1 GCHP-2 GCHP-2 <br /> Surrogate Recovery, %: 87 86 85 100 80 86 <br /> (QC Limits = 60-140%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. PACiFK ENvI NM <br /> Analytes reported as N.D.were not detected at or above the reporting limit. ENTA(@pOgp.INC <br /> SEQ IA ANALYTI SAL, ELAP/#1624 <br /> �£C 8 RFC-0 <br /> nda C. Schneider <br /> roject Manager/Sacramento Laboratory <br /> -,� 711039TPES 1 <br />