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� STL <br /> Submission # 2004-10-0473 <br /> Gas1BTEX Fuel Oxygenates by 82606 ' <br /> • Stratus Environmental Inc <br /> Attn Jay Johnson <br /> 3330 Cameron Park Drive, Suite 550 <br /> Cameron Park, CA 95682 <br /> Phone (530) 676-6007 Fax (530) 676-6005 <br /> Project 25775 S Patterson Pass Rd , Tracy Received 10115/2004 09 30 <br /> 6100 <br /> Prep(s) 50306 Test(s) 82606 <br /> Sample ID 6100INF2101404 Lab ID 2004-10-0473 - 1 <br /> Sampled 10/14/2004 11 50 Extracted 10/16/2004 12 24 <br /> Matrix Air QC Batch# 2004110116-1 A 65 <br /> Analysis Flag L2 ( See Legend and Note Section ) <br /> Compound Conc RL Unit Conc RL Unit Dilution Analyzed Flag <br /> Gasoline 2000 250 mglm3 560 70 ppmv 5 10/16/2004 12 24 <br /> Benzene 44 25 mg/m3 14 077 ppmv 5 10/16/2004 12 24 <br /> Toluene 48 25 mg/rn3 13 065 ppmv 5 10/16/2004 12 24 <br /> Ethylbenzene 58 2 5 mg/rn3 1 3 057 ppmv 5 10/16/2004 12 24 <br /> • Total xylenes 30 5 0 mg1m3 68 1 1 ppmv 5 10/16/2004 12 24 <br /> tort-Butyl alcohol(TBA) ND 25 rng/m3 ND 81 ppmv 5 10/16/2004 12 24 <br /> Methyl tert-butyl ether ND 25 mg/m3 ND 0 68 ppmv 5 10/16/2004 12 24 <br /> Di-isopropyl Ether(DIPS) ND 50 mg/m3 ND 14 ppmv 5 10/16/2004 12 24 <br /> Ethyl tert-butyl ether ND 25 mg1m3 ND 070 ppmv 5 10/16/2004 12 24 <br /> tert-Amyl methyl ether ND 2 5 mg/m3 ND 059 ppmv 5 10/16/2004 12 24 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 99 3 72-128 % % 5 10/16/2004 12 24 <br /> Toluene-d8 936 80-113 % % 5 10/16/2004 12 24 <br /> • <br /> Severn Trent Laboratories, Inc 11/05/2004 16 34 <br /> STL San Francisco"1220 Quarry Lane Pleasanton, CA 94566 Page 2 of 9 <br /> A peo of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn"CA DHS ELAP#2496 <br />