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1 <br />' 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 /> California Geophysical Client Project ID Beneto#8 Method EPA 5030/8260 <br /> P O Box 578341 Reference Number 8403 Instrument ID Varian 2100T <br />' Modesto CA 95357 Sample Description Water Prepared 08-02-05 <br /> Attn John Cussen Analyst Scott Foster Analyzed 08-02-05 <br /> Reported 08-10-05 <br />' QUALITY CONTROL DATA REPORT <br />' SPIKE ID VVVMS-8025V <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br />' /L /L /L %R <br /> COMPOUNDS <br /> t-ButyI Alcohol(t-BA) 20 ND 750 865% 576-163 <br /> Methyl t-butyl ether MTBE 050 ND 250 944% 647-134 <br />' Diiso ro 1 ether DIPS 050 ND 250 106% 582-135 <br /> Ethyl t-Butyl ether ETBE 050 ND 250 976% 650-132 <br /> t-Am 1 methyl ether TAME 050 ND 250 996% 61 0-139 <br /> 1,2-Dichloroethane 12-DCA 050 ND 250 104% 701-145 <br />' <br /> Ethylene dibromide EDB 050 ND 250 102% 550-156 <br /> Surrogates <br /> 1,2-Dichloroethane-d4 1 00 973% 100 983% 800-118 <br /> Toluene-d8 1 00 916% 100 986% 741-129 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br />' /L %R %R <br /> COMPOUNDS <br /> t-ButyI Alcohol(t-BA) 750 513% 821% 397-178 384% <br /> Methyl t-but I ether MTBE 250 101% 108% 553-144 613% <br /> Dusopropyl ether DIPE 250 102% 113% 549-135 967% <br /> Eth I t-Butvl ether ETBE 250 105% 107% 540-136 226% <br /> t-Am I methXI ether TAME 260 972% 102% 396-131 495% <br /> 1,2-Dichloroethane 1,2-DCA 250 103% 108% 739-147 530% <br /> Ethylene dibromide EDB 250 972% 108% 633-141 102% <br /> Surrogate <br /> 1,2-Dichloroethane-d4 100 91 I3% 104% 68 9-128 123% <br /> Toluene-d8 100 898% 101% 680-128 120% <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 OC limits and recoveries for MS/MSD's are advisory only and are not used to accept or <br /> reject batch results <br /> I <br /> APPROVED BYAPPROVED BY <br /> CIa J J es Phr!lrps <br /> Laboratory Manag aboratory Director <br />