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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> w NN x [916) 921-9600 a FAX (916) 921-0100 x k n <br /> AmWESNA Industries AA Client Proled ID 38009 09/City of Stockton -Sampled Jan V118, 1994 <br /> 164 Gold Camp Dr, Suite 200 Sample Matnx Air Received Jan 19, 1994 <br /> Rancho Cordova, CA 95670 Analysts Method EPA 5030/8015/8020 Reported Jan 21, 1994 <br /> Attention Jay Johnson First Sample # 401-0570 <br /> ' TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> ' Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte LImrt I D. I D. I.D. I.D. 1.13 I.D <br /> mg/ 401-0570 401-0571 401-0572 401-0573 401-0574 401-0575 <br /> ' cubic m A-8118 A-0118 A-0118 A-0118 A-0118 A-0118 <br /> fNF1 INF2 INF3 INF4 INF5 INF6 <br /> urges e <br /> Hydrocarbons 50 7,200 10,000 6,800 17,000 17,000 16,000 <br /> 1 <br /> Benzene 0 050 105 130 100 51 46 14 <br /> ' Toluene 0 050 85 210 170 30 30 21 <br /> tEthyl Benzene 0 050 100 140 88 36 29 25 <br /> Total Xylenes 0 050 240 320 190 34 24 20 <br /> Chromatogram Pattern Gasoline Gasoline Gasoline Gasoline Gasoline Gasoline <br /> ' Quality Control Data <br /> Report Limit Multiplication Factor 50 50 50 50 50 50 <br /> Date Analyzed 1/20/94 1/20/94 1/20/94 1/20/94 1/20/94 1/20/94 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> i <br /> Surrogate Recovery, % * '` <br /> (OC Limits = 70-130%) <br /> ' Purgeable t-lydrooarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> ' SEQUOIA ANALYTICAL Please Note <br /> watnx rnterterence <br /> Inds C Schneider <br /> Project Manager <br /> ' 4810570 RES <1 <br />