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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma CA 94954 <br /> 4 (707) 792-1865 <br /> FAX(707) 792-0342 <br /> Analytical www sequolalabs com <br /> Cambria Environmental Project Equiva Sampled 3/27/00 to 3/30/00 <br /> 270 Perkins St Prosect Number 620 W Charter,Stockton Received 3/3I/00 <br /> Sonoma,CA 95476 Project Mana er Aubrey Cool Reported 4/17100 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spoke(_continued) 0040053-MSI PO04022-03 __ <br /> Surrogate 1 2-Dichloroethane-d4 414100 500 499 ug/l 80 0-120 998 <br /> Surrogate Toluene-d8 11500 501 880-110 100 <br /> Matrix Spike Du p 0040053-MSD1 P004022-03 <br /> Methyl tent-butyl ether _ 4/_4100 500 0 559 569 ug/1 72_7-119 103 200 0 976 <br /> Surrogate Dibromofluoromethane 500 532 11860-118 106 <br /> Surrogate 12-Dichloroethane-d4 500 496 800-120 992 <br /> Surrogate Toluene-d8 500 503 880-110 101 <br /> Batch 0040079 Date Prepared 4/5/00 Extraction Method EPA 5030 waters <br /> Blank 0040079-BLKI <br /> Tert-amyl methyl ether 4/5/00 ND ug/1 1 00 <br /> Tert-butyl alcohol ND 200 <br /> 02i-isopropyl ether ND 100 <br /> Dibromoethane(EDB) ND 0 500 <br /> , -Dichloroethane ND IF <br /> 0 500 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 1 00 <br /> Methy]tert-butyl ether_ IF _ _ ND " _ _0_500 <br /> Surrogate Dibromofluoromethane 500 4 98 860-118 996 <br /> Surrogate 12-Dichloroethane-d4 500 4 85 800-120 970 <br /> Surrogate Toluene-d8 500 499 880-110 998 <br /> Blank 0040079-BLK2 <br /> Tert-amyl methyl ether 4/6/00 ND ug/1 1 00 <br /> Tert-butyl alcohol 1pND 200 <br /> Di-isopropyl ether ND too <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 tent-butyl ether _ _ND_ 0 500 _ <br /> Surrogate Dibromofluoromethane 500 455 860-118 910 <br /> Surrogate 12-Dichloroethane-d4 " 500 412 800-120 824 <br /> Surrogate Toluene-d8 500 490 880-110 980 <br /> LCS 0040079-BSI <br /> Methyl tert-butyl ether 4/5/0_0 5 00 5 Ol__ ug/1 __ 727-119 _100 <br /> Surrogate Dibromofluoromethane 500 4 98 860-118 99 6 <br /> Surrogate 1,2-Dichloroethane-d4 500 486 800-120 972 <br /> rrogate Toluene-d8 Soo 485 880-110 970 <br /> quoia Analytical-Petaluma *Refer to end of report far text of notes and definitions <br /> Page 20 of 22 <br />