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17071 792-1603 <br /> FA\(701)7y2-0342 <br /> �t t se']Wlahbs Com <br /> URS Coro- Sacramento Project Arco Site 6100 Tracv, CA P403162 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36619 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 03/11/04 11 36 <br /> Pur,veable Hydrocarbons and BTEX by EPA 8015B/8021B - Quality Control <br /> Sequoia Analytical -Petaluma <br /> Reporting Spike Source %REC RPD <br /> Anal}te Result Limit Units level Result %REC Limits RPD Limit Votes <br /> Batch 4030228- EPA 50308,w atei s <br /> Matrix Spike(4030228-NISI) Source P403051-04 Piepared &Analyzed 03/10/04 <br /> Gasoline Range Organics(C&C10) 2550 50 mg/m'Air 2750 ND 93 65-135 <br /> Gasoline Range Organics(C6-CIO) 725 14 ppmv 780 22 93 65-135 <br /> Benzene 42 6 0 50 mg/m3 Air 32 0 0 11 133 65-135 <br /> Benzene 13 4 0 16 ppmv too 0 033 134 65-1335 <br /> Toluene 604 0 13 " 50 4 0 064 120 65-135 <br /> Toluene 227 0 50 mg/m'Air 190 0 24 119 65-135 <br /> Ethylbenzene 50 5 0 50 45 5 ND 1 1 1 65-135 <br /> Ethylbenzene 11 6 0 12 ppmv 10 -� ND Ito 65-135 <br /> Xylenes(total) 55 1 0 12 1. 51 2 0 040 108 65-135 <br /> Xvlenes(total) 239 050 mg/m'Air 222 ND 108 65-135 <br /> Methyi lcrt-DutyI ether 204 U 56 ppmv 15 0 0 15 135 65-135 <br /> MethnI tent-butvl ether 73 3 2 0 my/m'Air 54 0 0 54 135 65-135 <br /> rogate aa,a-TriJluorotoluene 580 ppmv 503 115 65-135 <br /> Surrogate aaa-Tri luorololuene 346 mg/m'Aii 300 115 65-135 <br /> Surrogate 4-Broniofluorobenzene 423 ppmv 41 9 101 65-135 <br /> Surrogale 4-Bromofluorobenzene 302 mg/rn"Irr 300 101 65-135 <br /> Matrix Spike Du p (4030228-MSD1) Source P40305IL-04 Prepared& Anal)zed 03/10/04 <br /> Gasoline Range Organics (C6-C10) 722 14 ppmv 780 2 2 92 65-135 0 4 20 <br /> Gasoline Range Organics(C6-C10) 2540 �0 mg/m3 Air 27D0 ND 92 6-�-135 0 4 20 <br /> Benzene 43 2 0 50 32 0 0 11 135 65-135 1 20 <br /> Benzene 13 5 0 16 ppmv 100 0 033 135 65-135 0 7 20 <br /> Toluene 231 0 50 mg/ml Air 190 024 121 65-135 2 20 <br /> Toluene 61 5 0 13 ppmv 504 0 064 122 65-135 2 20 <br /> Ethylbenzene 12 0 0 12 " IO 5 ND 114 65-135 3 20 <br /> Ethvlbenzene 522 0:)0 mg/in'Air 45 5 ND 115 65-135 3 20 <br /> Xylenes(total) 247 0 50 222 ND 111 65-I35 3 20 <br /> Xvlenes (total) 57 1 0 12 ppmv 51 2 0 040 111 65-135 4 20 <br /> Methe I Cert but31 ether 64 0 2 0 mg/ail Air 54 0 0 54 118 65-135 14 20 <br /> Vlethvl tert-butyl ether 17 8 0 56 ppmv lc 0 0 15 118 65-135 14 20 <br /> Suriogate aaa-Tr tflarorotoluene 60 2 11 503 120 65-135 <br /> Surrogate aaa-Trifluorotoluene 359 mg/nr'Rrr 300 120 6a-135 <br /> Surrogale 4-Bronrofluorobenzene 43 5 ppmv 41 9 104 65-135 <br /> Surrogate 4-Bi oniofluorobenzene 311 117g/nr'Air 300 104 65-13.) <br /> uoia Analytical - Petaluma The i esulty in this report applv to the samples analyzed in accordance ivuh the chain <br /> of custody document Unless other~vise stated results are repoi ted on a wet weight <br /> basis This onah tical)epos r must he i epi oduced in its entirety <br /> Pale D of <br />