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ilk <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> (510) 686-9600 e FAX (510) 686-9689 <br /> A&Prealian Engineering, Inc Client Project 1D Unocal#2859, 1665 Pamfic Ave , Stockton Sampled Nov 12, 1993 <br /> 01 Stanwell Dr, Ste 400 Sample Matrix Water Received Nov 13, 1993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Dec 3, 1993 <br /> Attention Avo Avedessian First Sample # 311-1352 <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 /> pg/L 311-1352 311-1353 311-1354 311-1355 311-1356 311-1357 <br /> MWIl MW2 MW3 MW4 MW5 MW6 <br /> Purgeable <br /> Hydrocarbons 50 N D 130,000 1,700 100 N D 7,500 <br /> Benzene 0 5 N D 14,000 300 N D N D 28 <br /> Toluene 05 N D 27,000 78 N D N D 140 <br /> Ethyl Benzene 05 N D 7,000 70 N D N D 96 <br /> .Total Xylenes 05 N D 28,000 160 2 9 N D 3,000 <br /> Chromatogram Pattern - Gasoi:ne Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 50 10 1 0 1 0 20 <br /> Date Analyzed 11/24/93 11/24/93 11/24/93 11/24/93 11/24/93 11/29/93 <br /> Instrument Identification ML#2 ML#2 ML#2 ML#2 ML#2 ML#2 <br /> Surrogate Recovery, % 129 103 103 99 108 96 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> EQUOIA ANALYTICAL <br /> AlanKemp <br /> Project Manage <br /> 3111352 KEI <1> <br />