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©® S 1 L Submission: 2005-03-0627 <br /> Gas/BTEX/MTBE by 8260B (C6-C12) <br /> Cambria Environmental Emeryville <br /> Attn.: Aubrey Cool <br /> 5900 Hollis Street, Ste. A <br /> Emeryville, CA 94608 <br /> Phone: (510)420-3336 Fax: (510)420-9170 <br /> Project: 207-1359-001 Received: 03/18/2005 17:20 <br /> Shell SAP Number 136143 <br /> Site: 4315 Waterloo Street, Stockton, CA <br /> Batch QC Report <br /> Prep(s): 50308 Test(s):82608 <br /> Matrix Spike ( MS/MSD ) Soil QC Batch#2005/03/26-1A.69 <br /> MS/MSD Lab ID: 2005-03-0552-018 <br /> MS: 2005/03/26-1A.69-033 Extracted:03/26/2005 Analyzed: 03/26/200510:33 <br /> Dilution: 1.00 <br /> MSD: 2005/03/26-1A.69-052 Extracted:03/26/2005 Analyzed: 03/26/200510:52 <br /> Dilution: 1.00 <br /> Compound Conc. mg/Kg Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample mg/Kg MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 0.0458 0.0550 ND 0.05 91.6 110.0 18.3 65-165 20 <br /> Benzene 0.0494 0.0522 ND 0.05 98.8 104.4 5.5 69-129 20 <br /> Toluene 0.0454 0.0512 ND 0.05 90.8 102.4 12.0 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 484 517 500 96.8 103.4 76-124 <br /> Toluene-d8 440 482 500 88.0 96.4 75-116 <br /> Severn Trent Laboratories, Inc. 03/28/200514:57 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com"CA DHS ELAP#2496 Page 37 of 39 <br />