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esapea a Urive Redwooy AX(415) 9233 <br /> 404 N W,get Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 1195ernkerAvenue Suite 8 Sacramento CA 95834 (9t6) 921 9600 FAX(916)921 0100 <br /> Delta Environmental Consultants Client Project ID Unocal #5886 / Stockton Sampled Sep 25, 1995 <br /> 3164 Gold Camp Or, Ste 200 Sample Matrix Water Received Sep 25 1995 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 25, 1995 <br /> ' Attention Eric Halm First Sample # 509-048 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit 10 1 D I D <br /> ' pg/L 509-048 509-051 509-052 <br /> GP-7 W GP-8 W GP 9 W <br /> ' Purgeable <br /> Hydrocarbons 50 N D N D N D <br /> ' Benzene 0 50 N D N D N D <br /> ' Toluene 050 N D N D N D <br /> Ethyl Benzene 050 N D N D N D <br /> 1 <br /> Total Xylenes 0 50 N D N D N D <br /> Chromatogram Pattern _ <br /> ' Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 <br /> ' Date Analyzed 9/25/95 9/25/95 9/25/95 <br /> Instrument Identification ML-2 ML 2 ML 2 <br /> ' Surrogate Recovery, % 59 55 58 <br /> 1 <br /> Purgeable Hydrocarbons are quantitated against a Tresh gasoline standard <br /> ' Analvtes reported as N D mere not detected above the stated reoomng limit <br /> SEQUOIA ANALYTICAL ,x'1271 <br /> 1 I � ltl <br /> Kenneth L Wimer <br /> Project Manager <br /> 509 033 DDD <2- <br />