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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 /> BSK Analytical Laboratories Client Project ID 2003030987 Method EPA 5030/8260 <br /> 1414 Stanislaus Street Client Project Name Connell Motor Truck Instrument ID Varian Saturn 3 MS <br /> Fresno, CA 93706 Reference Number 5605 Prepared 03-28-03 <br /> Attn M[yuki Fujrta Matrix Water Analyzed 03-28-03 <br /> Analyst Scott Foster Reported 04-01-03 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VWMS-3283 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> u IL u IL u 1L %R <br /> COMPOUNDS <br /> t-But I Alcohol (t-BA) 20 ND 750 537% 70-130 <br /> Methyl t-but I ether MTBE 050 ND 250 71 6% 70-130 <br /> Dnso ro I ether DIPS 050 ND 250 91 6% 70-130 <br /> Ethyl t-But I ether ETBE 050 ND 250 892% 70-130 <br /> t-Am I methyl ether(TAME) 050 ND 250 620% 70-130 <br /> 1,2-Dichloroethane(1,2-DCA) 050 ND 250 776% 70-130 <br /> Ethylene dibromide(EDB) 050 ND 260 728% 70-130 <br /> Surrogates <br /> 1 2-Dichloroethane-d4 100 950% 100 81 5% 70-130 <br /> Toluene-d8 100 108% 100 854% 70-130 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> IL %R %R <br /> COMPOUNDS <br /> t-But I Alcohol(t-BA) 750 863% 111% 70-130 240% <br /> Methyl t-but I ether MTBE 250 864% 888% 70-130 267% <br /> Dnso ro I ether DIPE 250 100% 107% 70-130 695% <br /> Ethyl t-But I ether ETBE 2 5D 102% 102% 70-130 0393% <br /> t-Am I methyl ether(TAME) 250 708% 736% 70-130 388% <br /> 1,2-Dichloroethane 1,2-DCA) 2 5D 908% 952% 70-130 473% <br /> Ethylene dibromide(EDB) 250 856% 936% 70-130 893% <br /> Surrogate <br /> 1 2-Dichlorcethane-d4 100 921% 966% 70-130 477% <br /> Toluene-d8 100 976% 4 949% 70-130 2 81% <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 OC limits and recoveries for MSIMSD's are advisory only and are not used to accept or <br /> reject batch results <br /> ANALYST APPROVED BY 0-1 A <br /> Clarr J Cone TJam GPS <br /> La ratory Drrectar <br />