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' CAST <br /> • LE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209)384-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Pacific Car Wash Method EPA 5030/8260 <br />' of Northern California Reference Number 5269 Instrument ID Varian Saturn 3 MS <br /> 837 Shaw Road Matrix Water Prepared 12-02-02 <br /> Stockton, CA 95215 Analyst Scott Foster Analyzed 12-02-02 <br /> Attn Tim Cuellar Reported 12-06-02 <br /> QUALITY CONTROL DATA REPORT <br />' SPIKE ID VWMS-LCS-D022v <br /> Reporting BLANK Spiking Control %R <br />' Limit Result Level Spike Limits <br /> /L /L /L %R <br /> COMPOUNDS <br /> t-But I Alcohol(t-BA) 20 ND 750 664% 553- 153 <br />' <br /> Methyl t-but I ether (MTBE) 050 ND 250 788% 604- 137 <br /> Diiso rap I ether DIPS) 050 ND 250 988% 705- 131 <br /> Ethyl t-But l ether(ETBE) 050 ND 250 776% 721 - 131 <br /> t-Am I meth I ether TAME 050 ND 250 772% 71 7- 119 <br />' 1 2-Dichloroethane(1,2-DCA) 050 ND 250 936% 636- 138 <br /> Ethylene dibromide(EDB) 050 ND 250 106% 667- 129 <br /> Surrogates <br /> 1,2-Dichloroethane-d4 100 111% 100 886% 592- 135 <br />' Toluene-d8 100 115% 100 975% ___k__62_9- 132 <br /> Spiking MATRIX MATRIX %R %RPD <br />' Level SPIKE SPIKE DUP Limits <br /> !L %R %R <br /> COMPOUNDS <br />' t-But I Alcohol'1-11A) 750 110% 121% 553-153 989% <br /> Methyl t-but I ether MTBE 250 784% 824% 604- 137 435% <br /> Diisoprop I ether DIPS) 250 960% 102% 705- 131 565% <br /> Eth I t-But I ether ETBE 250 992% 102% 721 - 131 316% <br /> t-Am I methyl ether(TAME) 250 972% 972% 71 7-119 0 00% <br /> 1 2-Dichloroethane(1,2-DCA) 250 912% 980% 636-138 602% <br /> Eth lene dibromide(EDB) 250 106% 106% 667-129 000% <br /> Surrogate <br />' 1 2-Dichloroethane-14 10 0 898% 937% 592- 135 425% <br /> Toluene d8 100 <br /> 927% 908% 629- 132 207% <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 MS/MSD's are advisory only and are not used to accept or <br /> reject batch results <br /> } <br /> ANALYST ( nL'-'/APPR0VED BY Of <br /> Clan J Cone Ja s C fillips <br /> L oratory Director <br />