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i <br /> i CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater, CA 95301 Phone (209)384-2930 <br />' Certificate#2480 Fax (209)384-1507 <br /> Biophysics Environmental Assessment Client Project ID Frontier Trucking-Tracy Method EPA 5030/8260 <br /> 3577 W Philadelphia Ave Reference Number 8258 Instrument[D Varian 2100T <br /> Chino, CA 91710 Sample Description Water Prepared 06-24-05 <br /> Attn Dave Blakely Analyst Scott Foster Analyzed 06-24-05 <br /> Reported 06-30-05 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VWMS-6245V <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> IL 1L /L %R <br /> COMPOUNDS <br /> t-But l Alcohol(t-BA) 20 ND 750 848% 576-163 <br /> Methyl t-but I ether MTBE 050 ND 250 100% 647-134 <br /> Duso ro I ether DIPE 050 ND 250 103% 582-135 <br /> Ethyl t-But i ether ETBE 050 ND 250 106% 650-132 <br /> t-Am l methyl ether AME 050 ND 250 100% 610-139 <br /> 1 2-Dichloroethane 1,2-DCA 050 ND 250 110% 701-145 <br /> Ethylene dibromide EDS 050 ND 250 109% 550-156 <br /> Surrogates <br /> 1,2-Dichloroethane-d4 100 992% 100 102% 1 800-118 <br /> Toluene-d8 1 00 898% 100 - 102% 741-129 <br /> Spiking, MATRIX MATRIX %R %RPD <br />' Level SPIKE SPIKE DUP Limits <br /> /L %R %R <br /> COMPOUNDS _ �... <br /> t-But I Alcohol(t-BA) 750 775% 804% 39 7-178 3 72% <br />' <br /> Methyl t-butyl ether MTBE 250 107% 118% 553-144 893% <br /> Dusopropyl ether DIPE 250 112% 112% 549-136 0714% <br /> Ethyl t-But I ether ETBE 250 964% 111% 540-136 131% <br /> t-Am I methyl ether AME = 250 102% 103% 396-131 117% <br />' .µ 1 2-Dichloroethane 1,2-DCA 250 110% 110% 739-147 0341% <br /> Ethylene dibromide EDB 250 114% 111% 633-141 320% <br /> Surroate <br /> 1,2-D,chloroethane-d4 : 100 107% 116% 689-128 8 34% <br /> Toluene-d8 100 975% 104% 680-128 626 <br /> The LCS(Laboratory Check Sample)is a control sample of known, interferent free matrix that is fortified with representative analytes and <br />' analyzed using the same reagents preparation and analytical methods employed for the samples The LCS%recovery is used for validation <br /> of sample batch results Due to matrix effects,the QC limits and recoveries for MS/MSD's are advisory only and are not used to accept or <br /> reject batch results <br /> 010 APPROVED BY APPROVED BY <br /> Clan J Cone Jam s hdlrps <br /> Laboratory Manag La oratory Director <br />