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. CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater,CA 95301 Phone (209) 384-2930 <br /> Fax (209) 384-1507 <br /> BSK Analytical Laboratories Client Project ID 2003031257 Method EPA 5030/8260 <br /> 1414 Stanislaus St Client Project Name Connell Motor Truck Instrument ID HP Serres II <br /> Fresno CA 93706 Reference Number 5604 Prepared 03-28-03 <br /> Attn Miyuki.Fulita Matrix Soil Analyzed 03-28-03 <br /> Analyst Scott Foster Reported 04-01-03 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VSMS-3283 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> mg/K2 mg/Kg m2/K %R <br /> COMPOUNDS <br /> t-But l Alcohol (t-BA) 0 800 ND 300 126% 70-130 <br /> Methyl t-but I ether (MTBE) 0 010 ND 0 100 104% 70-130 <br /> Ditso ro l ether DIPS 0 010 ND 0 100 101% 70-130 <br /> Ethyl t-But l ether ETBE 0 010 ND 0 100 856% 70-130 <br /> t-Am I methyl ether TAME 0 010 ND 0 100 672% 70-130 <br /> 12-Dichloroethane 1,2-DCA 0010 ND 0100 134% 70-130 <br /> Ethylene dibromide(EDB) 0 010 ND 0 100 884% 70-130 <br /> Surrogates <br /> 1 2-Dichloroethane-d4 0 010 131% 0 400 1 132% 70-130 <br /> Toluene-d8 0 010 103% 0 400 951% 70-130 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> mg/Kg %R %R <br /> COMPOUNDS <br /> t-But l Alcohol (t-BA) 300 746% 776% 70-130 386% <br /> Methyl t-but I ether MTBE 0 100 688% 756% 70-130 687% <br /> Dusc ro I ether(DIPS) 0 100 860% 888% 70-130 316% <br /> Ethyl t-But I ether(ETBE) 0 100 896% 916% 70-130 2 21% <br /> t-Am I methyl ether TAME 0 100 792% 872% 70-130 962% <br /> 1 2-Dichloroethane 1 2-DCA 0 100 920% 896% 70-130 259% <br /> Ethylene dibromide(EDB) 0 100 72 0% 748% 70-130 381% <br /> Surrogate <br /> 1 2-Dichloroethane-d4 0 400 931% 881% 70-130 552% <br /> Toluene-d8 0 400 769% 743% 70-130 344% <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 MSIMSD's are advisory only and are not used to accept or <br /> refect batch results <br /> f� <br /> ANALYST APPROVED BY <br /> Clan J Cone J as Phillips <br /> aboratory Director <br />