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S 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 /> Advanced GeoEnvironmental Inc Client Project ID Pac Car Wash Method EPA 5030/8260 <br />' of Northern California Reference Number 6371(1-20) Instrument ID HP 5972 MS <br /> 837 Shaw Road Matrix Water Prepared 12-06-03 <br /> Stockton CA 95215 Analyst Scott Foster Analyzed 12-06-03 <br /> Attn Tim Cuellar Reported 12-18-03 <br /> 1 <br /> QUALITY CONTROL DATA REPORT <br />' SPIKE ID VVVMS-DO63 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> }iIL N /L 1L %R <br /> COMPOUNDS <br /> t-But I Alcohol(t-BA) 20 ND 750 953% 553- 153 <br /> Methyl t-but I ether MTBE 050 ND 250 113% 604-137 <br /> Dusopropyl ether DIPS 050 ND 250 908% 705- 131 <br /> Ethyl t-But I ether(ETBE) 050 ND 250 964% 721 - 131 <br /> t-Am I meth I ether(TAME) 050 ND 250 107% 717-119 <br /> I 1 2-Dichloroethane 1,2-DCA) 050 ND 250 108% 636-138 <br /> Eth jene dibromide(EDS) 050 ND 250 105% 667-129 <br /> Surrogates <br /> 1 2-Dichloroethane-d4 1000 91 9% 100 936% 592- 135 <br /> Toluene-d8 1000 922% 100 101% 629-132 <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) 750 905% 794% 553-153 122% <br /> Methyl t-but 2 ether (MTBE) 250 136% 104% 604-137 266% <br /> Duso ro l ether(DIPE) 250 960% 840% 705- 131 133% <br /> Eth I t-But I ether(ETBE) 250 106% 944% 721 - 131 11 6% <br /> t Amyl methyl ether(TAME) 250 104% 904% 717- 119 125% <br /> 1 2-Dichloroethane(1 2-DCA) 250 118% 104% 636- 138 125% <br /> Ethylene dibromide(EDB) 250 103% 968% 667-129 601% <br /> Surrogate <br /> 1 2-Dichloroethane-d4 100 <br /> 112% 97 7% 592-135 13 7% <br /> Toluene-d8 100 988% 956% 629-132 329% <br /> The LCS(Laboratory Check Sample) is a control sample 01 known mterferent 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 <br /> Clan J Cone Ja IIlips <br /> oratory Director <br />