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Sequoia 1455 McDowellP Blvd North Ste <br /> Petaluma,CA 949544 <br /> 4 (707)41) FAX(7071 792-0342 <br /> Analytical www sequolafabscom <br /> r <br /> Cambria Environmental Project Equiva Sampled 3/27/00 to 3/30/00 <br /> 270 Perkins St Protect Number 620 W Charter,Stockton Received 3/31/00 <br /> Sonoma,CA 95476 Project Manager AubrcX Cool Reported 4/17/00 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical=Petaluma' - -- <br /> Date Spike Sample QC Reporting Lirrut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Linuts % Lnrut % Notes* <br /> Batch 0040053 Date Prepared 4/4/00 Extraction Method EPA 5030 waters <br /> Blank 0040053-BLKI <br /> Tert-amyl methyl ether 4/4/00 ND ug/l 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 100 <br /> 1,2-Dibromoethane(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 1 00 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate Dibromofluoromethane 500 496 860-118 992 <br /> Surrogate 12-Dechloroethane-d4 500 451 800-120 902 <br /> Surrogate Toluene-d8 500 505 880-110 101 <br /> Blank 0040053-BLK2 <br /> Tert-amyl methyl ether 415100 ND ug/l 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 100 <br /> 1,2-Dibromoethane(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol " ND—" 100 — - <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate Dibromofluoromethane Soo 528 860-118 106 <br /> Surrogate 12-Diehloroethane-d4 500 474 800-120 948 <br /> Surrogate Toluene-d8 500 504 880-110 101 <br /> LCS 0040053-BSI <br /> Methyl tert-butyl ether 4/4/00 500 5 14 ug/l 727-119 103 <br /> Surrogate Debromofluoromethane 500 51-2 860-118 101 <br /> Surrogate 1 2-Dechloroethane-d4 500 4 75 800-120 950 <br /> Surrogate Toluene-d8 500 509 880-110 102 <br /> LCS 0040053-BS2 <br /> Methyl tert-butyl ether 4/5/00 500 5 18 ug/l 727-119 104 <br /> Surrogate Debromofluoromethane 500 533 860-118 107 <br /> Surrogate 12-Dichloroethane-d4 500 4 85 800-120 970 <br /> Surrogate Toluene-d8 500 510 880-110 102 <br /> Matrix Spike 0040053-MSI P004022-03 <br /> Methyl tert-butyl ether 4/4100 500 0 559 568 ug/l 727-119 102 <br /> Surrogate Drbromofluoromethane 500 531 860-118 106 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 19 of 22 <br />