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i <br /> Ile CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater, CA 95301 Phone (209)384-2930 <br /> Fax (209)384-1507 <br /> F <br /> anced GeoEnvironmental, Inc Client Project ID Pacific Car Wash Method EPA 5030/8260 <br /> orthern California Reference Number 6259 Instrument ID HP 5972 MS <br /> Shaw Road Matrix Soil Prepared 10-29-03 <br /> kton, CA 95215 Analyst Scott Foster Analyzed 10-30-03 <br /> Tim Cuellar Reported 11-07-03 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VSMS-0293 <br /> Reporting BLANK Spiking Control %R <br /> I Limit Result Level Spike Limits <br /> COMPOUNDS mg/Kg m /K mg/Kg %R <br /> t-Butyl Alcohol(t-BA) 080 ND 300 104% 70-130 <br /> Methyl t-butyl ether MTBE) 0 010 i NO 0 100 114% 70-130 <br /> Duso ra l ether(DIPE) 0 010 ND 0 100 122% 70-130 <br /> Ethyl t-Butyl ether(ETRE) 0 010 ND 0 100 124% 70-130 <br /> t-Am I methyl ether(TAME) 0 010 ND 0 100 121% 70-130 <br /> 1,2-Dichloroethane 1 2-DCA) 0 010 ND 0 100 115% 70-130 <br /> Ethylene dibromide(EDB) 0 010 ND 0 100 932% 70-130 <br /> Surro Rtes <br /> 1 2-Dichlorcethane-d4 0 010 951% 0 400 81 9% 70-130 <br /> Toluene-d8 0 010 103% 0 400 81 9% 70-130 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> mg/Kg %R %R <br /> COMPOUNDS <br /> I t-But I Alcoho#(t-BA) 300 747% 629% 70-130 168% <br /> Methyl t-but I ether (MTBE) 0 100 756% 680% 70-130 101% <br /> DBiiso ro I ether(DIPE) 0 100 884% 828% 70-130 648% <br /> Ethyl t-But I ether(ETSE) 0 100 852% 732% 70-130 — 152% <br /> -Amy[methyl ether(TAME) 0 100 792% 628% 70-130 208% <br /> 1,2-DEchloroethane(1 2-DCA) 0 100 852% 756% 70-130 118% <br /> Ethylene dibromide(EDB) 0 100 648% 588% 70-130 <br /> 971% <br /> Surrogate <br /> I 1 2-Dichforoethane-d4 0 400 920% 836% 70-130 9 57°1c <br /> Toluene-d8 0 400 889% 859% 70-1,30 3 430/a <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 /> reject batch results <br /> f � <br /> ANALYST APPROVED BY <br /> Clan J Cone rJamsPhillips <br /> ry Director <br />