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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 /> Advanced GeoEnvironmental Inc Client Project ID Flame(Liquors)Mini Mart Method EPA 5030/8260 <br /> of Northern California Reference Number 6121 Instrument ID HP 5972 MS <br /> 837 Shaw Road Matrix Water Prepared 09-28-03 <br /> Stockton CA 95215 Analyst Scott Foster Analyzed 09-28-03 <br /> Attn Tim Cuellar Reported 10-01-03 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VWMS-9283 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> IL IL IL %R <br /> COMPOUNDS <br /> t-Butyl Alcoho#(t-BA) 20 ND 75 4 809% 553- 153 <br /> I Methyl t-butyl ether (MTBE) 050 ND 250 105% 604- 137 <br /> Duso ro 1 ether(DIPF) 050 ND 250 944% 705- 131 <br /> Ethyl t-But I ether(ETRE) 050 ND 250 960% 721 - 131 <br /> t-Amyl methyl ether(TAME) 050 ND 250 960% 71 7- 119 <br />' 1 2-Dichloroethane (1 2-DCA) 050 ND 250 122% 636- 138 <br /> Ethylene dibromide(EDB) 050 ND 250 952% 657- 129 <br /> Surrogates <br /> • 1 2-Dichloroethane-d4 ion 108% 100 110% 592- 135 <br />' Toluene-d8 100 905% 100 101% 629- 132 <br />' Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> u /L %R %R <br /> COMPOUNDS <br />' t-But I Alcohol(t-BA) 750 775% 880% 553- 153 119% <br /> Meth i t-but I ether (MTBE) 250 764% 840% 604- 137 882% <br /> Dnsopropyl ether(RIPE) 2 50 896% 908% 70 5- 131 1 29% <br /> Ethyl t-Butyl ether(ETBE) 2 50 916% 102% 72 1 - 131 104% <br />' t-Am I methyl ether(TAME) 2 50 912% 984% 717- 119 717% <br /> 1 2-Dichloroethane (1 2-DCA) 250 126% 113% 636- 138 108% <br /> Ethylene dibromide (EDB) 250 106% 106% 667-129 000% <br /> Surrogate <br />' 1,2-Dichloroethane-d4 100 104% 105% 592-135 1 250% <br /> Toluene-d8 100 995% 994% 629-132 0 101% <br /> 1 <br />' The LCS (Laboratory Check Sample) is a control sample of known interferent free matrix that is fortified with representative analytes and <br /> anafyzed 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 />' f 1 <br />' ANALYST APPROVED BY <br /> Clary J Cone m C Phillips <br /> Laboratory Director <br />