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* re <br /> STT Submission# 2003-10-0435 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949)341-7440 Fax (949)753-0111 <br /> Project 410500-01 Received 10/10/2003 15 46 <br /> 01205 <br /> Site 16470 Cambridge St, Lathrop CA <br /> t Batch QC Report ' 4 <br /> Prep(s) 5030E s> J i Tests) 8260FAB <br /> Laboratory Control Spike =, Water ;� �°,�� QC Batch#2003/422.01168 <br /> 2003110122-0168-01 ,; =,a `Extracted i10I2212003,, h h '")Mblyzed,1 012212 0 0 3`09 19 <br /> � zli � � Yixln{' yYcl,` fa YX' ti,e �i > <br /> LCSD *'� , 2003110122-01 68-040 _ Extracted 10/22/2663`^,,' - �' �'> Analyzed 10!2212003-09 40 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 233 229 250 932 91 6 1 7 69-129 20 <br /> Toluene 24 7 233 25 0 988 93 2 58 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 235 223 25 0 940 89 2 52 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 505 503 500 1010 1006 76-114 <br /> Toluene-d8 537 532 500 107 4 106 4 1 1 88-110 <br /> Severn Trent Laboratories, Inc 10124/2003 09 15 <br /> - -- — - STL San Francisco•1220 Quarry Lana-Pleasanton CA 94566 - - - <br /> Aprt of 5-T�t Pic Tel 925 484 1919 Fax 925 484 1096'www stl Inc corn"CA DHS ELAP#2496 Page 10 of 11 <br />