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819 Striker Avenue Suite 8 <br /> //��y' <br /> Sacramento r—A 95834 <br /> Sequoia (9 16)9Z1-9600 <br /> FAX(916)921-0 100 <br /> Analytical wwwsequolalabs corn <br /> Delta Environmental Consultants-Cameron Park Protect ARCO 2168, Stockton, CA Sampled 7131/00 <br /> 3330 Cameron Park Dr Project Number N/A Received 7/31/00 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 8/15/00 <br /> , ism"M w- -e'^^'"r�rh'?s!*F <br /> s,t:rli Total Pu"rgeable Hydroca"rW6ns'(C6 C1e2)-BTEX'and#MTBE Uf DHS;L`UFT/Qaallty:Controi r^a 1 <br /> Er <br /> .tC.,;�9 <br /> _= M�SequotaaAnaylytical Sacramento,, sem; <br /> �, ., 1 "�,. �_ fes-. � — r_ _, <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0080173 Date Prepared 8/12100 Extraction Method EPA.50306 MeOHI <br /> Blank 0080173-BLK1 <br /> Purgeable Hydrocarbons 8/12/00 ND mg/kg 100 <br /> Benzene 11ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tent-butyl ether ND 00500 <br /> Surrogate a,a,a-Tr¢fluorotoluene 0200 0207 600-140 103 <br /> LCS 0080173-BSI <br /> Benzene 8/12/00 0200 0 193 mg/kg 700-130 965 <br /> Toluene " 0200 0 216 700-130 108 <br /> Ethylbenzene 0200 0 215 700-130 108 <br /> Xylenes(total) 0 600 0 588 700-130 98 0 <br /> tAwi tert-butyl ether 0200 0 177 700-130 88 5 <br /> ate a a,a-Trtfluorotoluene 0200 0 215 600-140 108 <br /> Matrix Spike 0080173-MS1 5007394-01 <br /> Benzene 8/13/00 0200 ND 0 151 mg/kg 600-140 75 5 <br /> Toluene 0200 ND 0 171 600-140 855 <br /> Ethylbenzene 0200 ND 0 182 600-140 910 <br /> Xylenes(total) 0 600 00797 0 620 600-140 900 <br /> Methyl tert-butyl ether 0200 0 137 0 363 600-140 113 <br /> Surrogate a,a a-Triuorotoluene 0200 0 194 600-140 970 <br /> Matrix Spike Duo 0080173-MSDI 5007394-01 <br /> Benzene 8/13/00 0200 ND 0 160 mg/kg 600-140 800 250 579 <br /> Toluene 0200 ND 0 188 600-140 940 25 0 947 <br /> Ethylbenzene 0200 ND 0 196 0600-140 980 25 0 741 <br /> Xylenes(total) 0 600 00797 0 654 „ 600-140 957 25 0 614 <br /> Methyl tert-butyl ether 0200 0 137 0 368 600-140 115 25 0 175 <br /> Surrogate a a,a-Trifluorotoluene 0200 0 213 600-140 106 <br /> Batch 0080184 Date Prepared_ 4/14/00 Extraction Method EPA 50306 McOH <br /> Blank 0080184-BLKI <br /> Purgeable Hydrocarbons 8/14/00 ND mg/kg 100 <br /> Benzene ND It000500 <br /> Toluene ND to000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> a Analytical-Sacramento *Refer to end of report far text of notes and definitions <br /> Page 8 of 13 <br />