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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • Sacramento CA 95834 <br /> (916) 921-9600 • FAX (916) 921 0100 <br /> RESNA Industries Client Project ID #38009 04/Fire Station #2, Stockton Sampled May 25, 1993 <br /> 3164 Gold Camp Dr, Suite 200 Sample Matrix Water Received May 25, 1993 <br /> Rancho Cordova, CA 95670 Analysts Method EPA 5030/8015/602 Reported Jun 8, 1993 <br /> Attention Jay Johnson First Sample# 305-0919 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D. I D I D I D. <br /> ug/L 305-0919 305-0920 305-0921 305-0922 305-0923 <br /> W-40-MW4 W-40-MW3 W-40-MW2 W-41-MW1 W-40-RW-1 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 2,200 450 <br /> Benzene 05 N D N D N D 570 47 <br /> Toluene 05 N D N D N D 82 48 <br /> Ethyl Benzene 05 N D N D N D 76 1 1 <br /> Total Xylenes 0 5 N D N D N D 180 4 0 <br /> Chromatogram Pattern - - - - Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 10 10 1 0 <br /> Date Analyzed 5/28/93 5/28/93 5/28/93 5/28/93 6/3/93 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 96 97 100 103 N/A <br /> (QC Limits = 70-130°/x) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> Wendy Amundsen <br /> Laboratory Director 3050919 RES 1 <br />