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1455 McDowell fflvd North,Ste D <br /> Sequoia Petaluma CA 94954 <br /> 4 -ID (707)792-1865 <br /> FAX(707)792-0342 <br /> Analytical T www sequolalabs com <br /> Y <br /> Cambria Environmental Project Equiva Sampled 5123100 to 5125100 <br /> 270 Perkins St Project Number 6131 Pacific Ave,Stockton Received 5126100 <br /> Sonoma,CA 95476_ Project Manager Aubrey Cool Reported 6/6/00 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Analytical--Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Anal Level Result Result Units Recov Limits % Limit % Notes* <br /> Ma-tdr 0060024 Date Preyared-611100 Extraction Method-EPA 5030 waters <br /> Blank 0060024-BLK1 <br /> Tert-amyl methyl ether 611100 ND ugA 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 100 <br /> Ethanol " ND 100 <br /> Ethyl tert-butyl ether " ND 100 <br /> Methyl tert-butyl ether ND 0.500 <br /> Surrogate Dibromofluoromethane 500 497 H 860-118 994 <br /> Surrogate 1,2-Drchloroethane-d4 500- 512 800-120 102 <br /> Surrogate Toluene-d8 " 500 513 880-110 103 <br /> Blank 0060024-BLK2 <br /> Tert-amyl methyl ether 612100 ND ug/l 100 <br /> Tert-butyl alcohol ND _ 200 <br /> Di-isopropyl ether " ND 100 <br /> Ethanol ND 100 <br /> Ethyl ten-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 0.500 <br /> ,..Surrogate-Dibromofluorometharre-_____." 5 00 4 89 86 0-118 978 <br /> Surrogate =1,2-Dichloroethane-d4== "- =5 00-=_= _= -=4 92= "=_ __-80 0-120 98 4- -- - - - <br /> Surrogate Toluene-d8 500 503 880-110 101 <br /> Blank 0060024-BLK3 <br /> Tert-amyl methyl ether 612/00 - ND ug/I - 1.00 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 1.00 <br /> _ -Ethanol ND_v _"..._� _ 100 ---- <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate Dibromofluoromethane _ " _ _ 500 _ 485 860-118_ 970 <br /> Surrogate_ !,2-Dtchloroethane-d4 500 487 " 80 0420 974 <br /> Surrogate Toluene-d8 " 500 482 " 880-110 964 <br /> LCS 0060024-BS1 ' <br /> Methyl tert-butyl ether 6/1/00 100 0 968 ug/l 727-119 968 <br /> _Su_rrogate Dib_romofluorpme_thane 500 4_98_ _" 860-118 „ 99 6 M <br /> -Surrogate -1,-2=Drchloroethane=d4 a --50-0 ' - 5-19 " ----80 0=120-104 <br /> Surrogate Toluene-d8 500 507 880-110 101 <br /> LCS 0060024-BS2 <br /> Methyl tert-butyl ether 6/2/00 Soo 466 ug/I 727-119 932 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and deflin <br /> Page 15 of 17 <br />