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404 N Wigec Lane Walnut Creck Ca 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analvtical 819 Scnker avenue Suue 8 Sacramento CA 95834 (916) 92t 9600 FAX(916)921 0100 <br /> Delta Environmental Consultants Client Project ID Unocal 05886 2701 W March Lane Sampled Sep 25, 1995 <br /> 3300 Delta Drive, Ste 100 Sample Matrix Sod Stockton Received Sep 25, 1995 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015 Mod /8020 Reported Oct 5, 1995 <br /> ' Attention Eric Holm First Sample # 509-1738 <br /> QC Batch Number SP100495 SP100495 <br /> ' 8020ECA 8020EXA <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> ' Anaiyte Limit I D I D <br /> mg/kg 509-1738 509-1741 <br /> GP 5-13 GP 8-(5-5 q) <br /> ' Purgeable <br /> Hydrocarbons 1 0 N D N D <br /> ' Benzene 00050 N D N D <br /> ' Toluene 00050 N D N D <br /> ' Ethyl Benzene 00050 N D N D <br /> Total Xylenes 00050 N D N D <br /> Chrornatogram Pattern <br /> ' Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 <br /> ' Date Analyzed 10/4/95 10/4/95 <br /> Instrument Identification HP-2 HP-2 <br /> Surrogate Recovery, % 93 99 <br /> (QC UrnitS = 70-130%) <br /> 1 <br /> Purgeable Hydrocarcons are quantitated against a fresh gasoline standard <br /> ' Anaiytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL #1271 <br /> eth L %mer <br /> Project Manager <br /> 5091736 DDD <5> <br />