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f a <br /> ,t o ��. (707)702 IS(5 <br /> P\\j07)7i= Oj42 <br /> •7 ti Lti sequo�ll�bs coni <br /> URS Coil)-Sacramento Prosect Arco Site 6100 Tracy CA P403161 <br /> 2370 Gateway Oaks Drnc Suite 300 Prosect Number WR36619 Repotted <br /> Sacramento CA 95833 Prosect Manager Jay Johnson 03/11/04 11 27 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B - Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %AEC RPD <br /> LA..1, Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Bitch 4030228-EPA 5030B,«iters <br /> Blank(4030228-BLKI) Prepared&Analyzed 03/10/04 <br /> Gasoline Range Organics(C&CI0) ND 14 ppmv <br /> Gasoline Range Organics(C6-C10) ND 50 mg/ml Air <br /> Benzene ND 0 50 " <br /> Benzene ND 016 ppmv <br /> Toluene ND 013 " <br /> Toluene ND 0 50 mg/m'Air <br /> E'tiylberzene ND 0 50 " <br /> Ethvlbenzene ND 012 ppmv <br /> Xylenes (total) ND 0 12 " <br /> Xvlenes (total) ND 050 nig-/m'Air <br /> Methyl tert-butyl ether ND 2 0 " <br /> thyl tert-butyl ether ND 056 ppmv <br /> rogate a a a-TrrJluorotoluene 509 1150 3 101 65-135 <br /> Sur i ogate a a a-Trri luorotoluene 304 mgltn'Air 300 101 65435 <br /> Surrogate 4-Bromofluorobenzene 39 9 ppnly 41 9 95 65-135 <br /> Surrogate 4-Brarnofluoeobenzene 285 mglm'Air 300 95 6543 <br /> Laboratory Control Sam le(4030228-BSI) Pre aced&Analyzed 03/10/04 <br /> Gasoline Range Organics(C6 C10) 719 14 ppmv 780 92 65-135 <br /> Gasoline RanEe Organics(C6 C10) 2530 50 mg/m'Air 2750 92 65-135 <br /> Benzene V 13 2 0 16 ppmv 10 0 132 65-135 <br /> Benzene 420 050 mg/ml Air 320 131 65-135 <br /> Toluene 216 0 50 190 114 65-135 <br /> Toluene 575 0 13 ppmv 50 4 114 65-135 <br /> Ethy Ibenzene 11 4 0 12 10 5 109 65-135 <br /> Ethylbenzene 49 3 0 50 mg/m'Air 45 5 108 65-135 <br /> Xylenes(total) 234 050 1222 105 65-135 <br /> Xylenes (total) 54 1 0 12 ppmv 51 2 106 65 135 <br /> tileth)1 tert-butyl ether 70 0 2 0 mann'Air 540 130 65 135 <br /> Methyl test butyl ether 19 a 0 56 ppmv 15 0 130 65-135 <br /> Szrrogate aaa-Trifluototoluene 340 mg/m'Air 300 113 65-13.) <br /> Szrrogate a a a-Trrfluorotoluene )6 9 ppmv )0 3 113 65-135 <br /> Surrogate 4-Bromofluorobemxne 305 mg/m'Air 300 102 65-135 <br /> Stu rogate 4-Bromofluorobenzene 436 ppmv 419 103 65-130 <br /> �uoia Analytical - Petaluma The results in this report apply to the samples m7alvzed in accordance with the chain <br /> of cusiodv document Unless otheiwrse statect, results are repo)ted on a net weight <br /> basis This analytical i epos t must be r epi oduced in its enin eta <br /> Pa�Te 4 of 6 <br />