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Sequoia 1455 McDowell Blvd North Ste D <br /> / Petaluma,CA 94954 <br /> (707) 792-1865 <br /> 342 <br /> Analytical <br /> FAX equo 79bs com <br /> www sequoialabs com <br /> 0 <br /> Cambna Environmental Project Equiva Sampled 3127/00 to 3/30100 <br /> 270 Perkins St Project Number 620 W Charter,Stockton Received 3/31/00 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 4/17/00 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> SequoiaTAnalytical=Petaluma- <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Nates* <br /> LCS 0040079-BS2 <br /> Methyl tert-butyl ether 4/6100 500 482 ug/l 727-119 964 <br /> Surrogate Dibromofluoromethane 11 -500 4 72 11860-118 944 <br /> Surrogate 12-Dichloroethane-d4 500 439 it800-120 878 <br /> Surrogate Toluene-d8 500 486 It880-110 972 <br /> Matrix Spike 0040079-MSI P004042-03 <br /> Methyl tent-butyl ether 415100 500 ND 495 ug/l 727-119 990 <br /> Surrogate Dibromofluoromethane 11500 503 860-118 101 <br /> Surrogate 12-Dichloroethane-d4 to 500 4 88 800-120 976 <br /> Surrogate Toluene-d8 11500 500 880-110 100 <br /> Matrix Spike Dun 0040079-MSDI P004042-03 <br /> Methyl tert-butyl ether 4/5/00 500 ND 5 13 ug/l 727-119 103 200 396 <br /> Surrogate Dibromofluoromethane 500 511 860-118 102 <br /> Surrogate 1,2-Dichloroethane-d4 500 499 800-120 998 <br /> Surrogate Toluene-d8 It5 00 500 880-110 100 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 21 of 22 <br />