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j SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 e Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> 1 � <br /> RE�taw..c` "'ic= <br /> SNA I nac.aw ,:.> <br /> Indus—tries Client Project ID Arco #2130, Stockton Sampled Dec 22, 1992 <br /> 3164 Gold Camp Dr. Suite 200 Sample Matrix Water Received Dec 23, 1992„ <br /> Rancho Cordova, CA 95870 Analysis Method EPA 5030/8015/602 Reported Dec 30, 1992 <br /> Attention rMatthew Taylor First Sample # 212-0687 <br /> <in3;��9`x`~�a:`r'.e, �`�. a s.. ��,•;w"2�,0 �a�. � °2"'i°���k'�,w'.. 'a...c'� ��`'�^a"� i�"�„an>.<s Y .,,�al£`,t ��� < <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Lima I D. I D. I.D. I.D. I.D. I.D. <br /> pg/L 212-0687 21243688 212-0689 212-0690 212-0691 212-0692 <br /> MS-1-1 MS-1-2 MS-1-3 MS-2-1 MS-2-2 MS-2-3 <br /> Purgeabie <br /> Hydrocarbons 50 1,200 420 440 400 190 N D <br />' Benzene 050 280 83 82 80 26 27 <br /> Toluene 050 160 41 40 N D 2 0 N D <br /> Ethyl Benzene 050 14 28 2 7 N D N D N D <br /> Total Xylenes 050 140 37 39 67 7 7 12 <br /> Chromatogram Pattern Gas Gas Gas Gas Gas Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 2 0 2 0 2 0 10 10 <br /> Date Analyzed 12/28/92 12/28/92 12/28/92 12/28/92 12/23/92 12/23/92 <br /> Instrument Identification HP-1 HP-1 HP-1 HP-1 HP-1 HP-1 <br /> Surrogate Recovery, % 110 106 113 75 121 106 <br /> (QC Limits = 70-130%) <br /> Purgeabie"Arocsrbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were net detected above the stated reporting limit <br /> SEQUOIA ANALYTI AL <br /> Michael R Giles <br /> Laboratory Director <br /> 2120687 RES a 1> <br />