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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 /> FAftnEnvrronmental Inc Client Project ID Cal-Fuels Method EPA 5030/8260 <br />' lifornia Reference Number 5359 Instrument 1D Var-GCIMS <br /> d Matrix Water Prepared 01-06-03 <br /> 5215 Analyst Scott Foster Analyzed 01-06-03 <br /> lar Reported 01-10-03 <br /> t <br /> QUALITY CONTROL DATA REPORT <br />' SPIKE ID VWMS-1063 <br /> Reporting BLANK Spiking Control %R <br />' Limit Result Level Spike Limits <br /> IL IL IL %R <br /> COIVIPOt3NDS <br /> t-But I Alcohol(t-BA) 20 ND 375 143% 553-153 <br />' <br /> Methyl t-but I ether (MTBE) 050 ND 250 --932% 604- 137 <br /> Diiso ra l ether(DIPE) 050 ND 250 102% 705- 134 <br /> Ethyl t-But I ether(ETRE) 050 ND 250 103% 721 - 131 <br /> t-Am I meth t ether(TAME) 050 ND 250 102% 717- 119 <br />' 1 2-Dichloroethane 1,2-DCA) 0 50 ND 250 102% 636- 138 <br /> Eth lene dibromide(EDB) 0 50 ND 250 100% 667- 129 <br /> Surro ates <br /> 1 2-l0rchloroethane-d4 <br /> 100 916% 100 102% 592-135 <br /> Toluene-d8 100 870% 100 911% 62 9- 132 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DtJP Limits <br /> COMPOUNDS u IL %R %R <br /> t-But ll Alcohol(t-BA) 375 108% 104% 553- 153 309% <br /> Methyl t-but I ether (MTBE) 260 812% 884% 604-137 756% <br /> Duso ro I ether(DIPE) 250 105% 111% 705-131 542% <br /> Ethyl t-Butyl ether(ETRE) 250 106% 106% 721 -131 0374% <br /> t-Am I meth I ether TAME 250 104% 104% 717-119 0755% <br /> 1 2-Dichloroethane(1 2-DCA) 250 980% 936% 63 6-138 4 46% <br /> Ethylene dibromide (ED81 250 992% 100% 667-129 0 784% <br /> Surro ate <br /> 1,2-Dichloroethane-d4 100 970% 972% 592-135 0 206% <br /> Toluene-d8 100 958% 104% 629- 132 $50% <br /> i <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 /> r <br /> r / <br /> ANALYST APPROVED BY <br /> Clan J Cone Ja es rpips <br /> borafory Director <br />