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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> 7'm <br /> Analytical FAX (707) 792 08342 <br /> nmental Consultants Project Exxon Sampled 5126/99 <br /> p Dr Suite 200 Project Number 7-37081D093-809 Received 5/28199 <br /> Rancho Cordova CA 95670 Project Manager Jim Brownell Reported 6/21/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical - Petaluma <br /> Date Spike Sample QC Reporting Limit Recor RPD RPD <br /> nalv2e Analvzed Level Result Result Units Recov Limits °% Limit % Notts- <br /> Matrix Spike Dup 9060176-'VISD1 P906018-05 <br /> ethvl Cert-butyl ether 6/6/99 500 744 6441 75 8-124 114 35 0 1 74 <br /> ethyl tent-butyl ether 50 0 744 64 4 75 8-124_ 114 35 0 1 74 <br /> j.:urrogate Dibronrofluoroniethafie )0 0 -495 800-120 990 <br /> irrogate Dibromofluoromethane 500 495 800-120 990 <br /> rrogate 12-Dtehloroeihane-d4 500 559 80 0-120 112 <br /> Surrogate Toluene d8 500 51 8 81 0-117 104 <br /> lurrogate -S-Bromofuorobenzene 500 53 4 740-121 /07 <br /> atch 9060197 Date Prepared 6/7/99 E xtraction Method EPA 5035 <br /> Blank 9060197-BLKI <br /> ethyl tort-butyl ether 6,7/99 tip u,< 5 00 <br /> urrogate Dibromofluoromethane50() �j ! 800-120 10; <br /> lank 9060197-BLK2 <br /> hyl ten-butyl ether 6/8/99 _ ND u�<g _ 5 00 <br /> rogate Dibromoflt oromtthatic 1500 34 4 80 0-1 20 109 <br /> CS 9060197-BSI <br /> ethyl ter, butyl ether. 6/7/99 50 0 51 9 ug.Ag 75 8-124 104 <br /> Surrogate Dibromofluoromeihane 1500 538 90-129 108 <br /> U,tl <br /> 9060197-BS2 <br /> test-butyl ether 6/8.199 _ 50 0 _ _ 53 1 ugr3cg 75 8-124 106 <br /> Surrogate Drbromofluoromethane 50 0 5 S ! 800-120 l0$ <br /> Latrix S tke 9060197-NISI500 <br /> Methyl tert-butyl ether 6/7/99 500 ND 55 2 ug/kg 75 8-124 110 <br /> rrogaie Drbromofluoromethane " 500 481 _ 800-120 962 <br />(atria Spike Du <br /> p n 9060197-tir5D1 P906014-09 <br /> Methyl tent-butyl ether _ 617/99 50 0 _ ND _ 606 ug 75 8-124 E21 35 0 9 S2 <br /> rrog¢te Drbromofluoromethane 11 50 0 54 5 800-120 109 <br /> Batch 9060258 Date Prepared 6/8/99 Extraction tilethod EPA 5035 <br /> lank 9060258-BLKI <br /> 't amyl methyl ether 6/8/99 ND ug/kg Soo <br /> ert-butyl alcohol ND 100 <br /> Di-isopropyl ether ND 500 <br /> 12-Dibromoethane(EDB) ND 500 <br /> 2-Dichloroethane ND Soo <br /> anol " ND 200 <br /> nota Analytical -Petaluma *Refer to end of report for text of notes and definitions <br />' Page 15 of l8 <br />