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,SEQ0IA ANALYTICAL -6510 988 9673 06/11/98 15 31 N 02/04 NO 439 <br /> Sequoia 690 Chesapeake Drive Etcdwood City CA 9063 (650) 364 9600 FAX(650)364 9.33 <br /> ."Y q 404 N Wiget[ane Walnut Crect CA 9,9598 (510) 969 9600 FAX(510)98$%73 <br /> i 19 Strikcr Avenue Suitt 8 Sscramcnto C� 95834 (916) 921 9600 FAX(916)91,1 0100 <br /> Analytical <br /> w <br /> SEC4R Client F'rojeci is Arco #2093 Tracy Sampled May 28, 1998 <br /> 9912 Business Park Drive Ste 100 Sample Matrix Air Reported May 1998 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015 Mod j8020 Reported Jun 1 1 1 i 1998 <br /> Attention Rusty Benkosky First Sample # 805-2313 <br /> QC Batch Number GCG52998 GCO52998 <br /> 802002D 6020026 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit ID ID <br /> u9/L 805-2313 805-2314 <br /> INF EFF <br /> Purgeable <br /> Hydrocarbons 10 1600 41 <br /> Benzene 0 050 59 017 <br /> Toluene 0 050 11 0 14 <br /> thyl Benzene 0 050 77 024 <br /> Total Xylenes 0 050 24 1 1 <br /> Chromatogram Pattern Gasoline Gaanline <br /> Quality Control Data <br /> Report Limn Muitlplicatlon Factor 100 1 0 <br /> Date Analyzed 5/29/98 5/29/98 <br /> Instrument Identification HP-2 HP-2 <br /> Surrogate Recovery <br /> 129 89 <br /> (OC Limns = 70-130%) <br /> Purgeable Hydrocarbons are quanthated against a fresh gasoline standard <br /> Analytes reported as N D were nol detected above the stated reporisng limn <br />•EOUOIA ANALYTICAL, #1271 <br /> Melissa A Brewer <br /> Project Manager <br /> 6052313 SEC � <br />