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STLSubmission• 2005-01-0841 <br /> • Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambria Environmental Sonoma <br /> Attn Joe Neely <br /> 270 Perkins Street <br /> Sonoma, CA 95476 <br /> Phone (707)933-2361 Fax (707)935-6649 <br /> Project 247-1661-006 Received 01/28/2005 17 50 <br /> 97471967 <br /> Site 2375 West Grant Line Road, Tracy, CA <br /> Batch QC Report <br /> Prep(s), 5030E Test(s)-8260B <br /> Matrix Spike(MS I MSU Soil QC Batch#2005102107-38:66 <br /> IVISIMSD Lab ID 2005-01-0766-0`11 <br /> MS 2-005102/07-38 66-040 Extracted 02/0712005 Analyzed. 02107/2005 18,40 <br /> Dilution, 20000 <br /> MSD. 2005102107-35,68, G3 Extracted 11210712005 Analyzed 02/0712005 20:03 <br /> Dilution, 20000 <br /> Compound Conc m (Kq Spk Level cove % Limits% Fla s <br /> MS MSD Sample m /K MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 00754 00825 00382 0049115 757 891 163 65-165 20 <br /> Benzene 00436 00446 ND 0049115 888 89 7 10 69-129 20 <br /> Toluene 00515 00494 ND 0049115 1049 99 4 54 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichlaroethane-d4 480 470 500 96 0 94 0 76-124 <br /> Toluene-d8 503 1488 1 500 1006 976 75-116 <br /> Severn Trent Laboratories, Inc 02/111200516 57 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A W of Sown Trent Pie Tel 925 484 1919 Fax 925 484 1096"www stl-Inc corn'CA DHS ELAP#2496 Page 24 of 27 <br />