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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma CA 94954 <br /> 4 (707) 792 1865 <br /> Analytical FAX (707) 792-0342 <br /> elta Environmental Consultants Project Exxon Sampled 5/26199 to 5127199 <br /> 164 Guld Camp DE Suitt, 20u Prujec.r number 7-3 708lD03-5ui Re�etved X120/99 <br /> Rancho Cordova C-1 95670 Project Manager Jim Brownell Reported 6/21199 <br /> Volatile Organic Compounds b} EPA `lethod 8260B,'Qualit} Control <br /> Sequoia Analytical - Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Rnalvie Analyzed Level Result Result Units Recov Limits % I mit % vot s" <br /> CS continued 9060198-13S2 <br /> rrrogate 4 Srontofl tai abets=en 6/9/99 _1000 - 2000 =rg/kg 740-121 IOU <br /> viiilatrix Spike 9060198-blSl P906018-25 <br /> Wethyl tent-butyl eth(,- 6,1M 2000 ND 1700 ug-k 75 8-124 85 0 <br /> ethyl tert-butyl ether 2000 ND 1700 75 8-124 850 <br /> Surrogate Dtbro)noJluororn,Inane 1000 1980 800-120 990 <br /> Irrogate Dibromoflvoromethane 2000 1980 800-110 990 <br /> rrogate 1 1 Drchloroethr ne d4 2000 2090 300-120 103 <br /> Surrogate Toluene-a3 -1000 '150 810-117 108 <br /> tatrirrogule 4 BromoJluorut,cn_eire 2000 2020 14 0-121 101 <br /> x Spike Du 9060198-'NISDI P906018-25 <br /> P P <br /> Methvi tert-butyl ether 6/10/99 2000 ND 1520 75 8-124 76 0 3) 0 [1 2 <br /> ethyl List butyl cthe- 2000 ND1-)20 75_8-124 760 35 0 11 2 <br /> ogate Drbrom9Jluoromethwu 2000 1800 800-120 900 <br /> ogate Dibromofluoromelhune 2900 1800 800-1-10 900 <br /> rrogate ! 3 Drchloroethane-dam 2000 1'00 600-120 85 0 <br /> rrogate Toluene-d$ '000 1960 81 0-117 980 <br /> rrogate 4 Bromofluorobenzene 3000 '180 740 121 109 <br /> tch 9060258 Date Prepared 618199 Extraction Method EPA 5035 <br /> wank 9060258-BLK1 <br /> Tert-amyl methyl ether 6/8/99 ND ug/kg 5 00 <br /> 1rt-butyl alcohol ND 100 <br /> isopropyl ether ND 500 <br /> 2-Dibromoethane (EDB) ND 500 <br /> 1,2-Dichloroethane ND 500 <br /> hanol ND 200 <br /> hyl tent-butyl ether ND 5 00 <br /> ethyl tert-butyl ether ND 5 00 <br /> ethyl tert_-butyl ether ND 5 00 <br /> rrogate Drbromofluoromethane 500 52 3 800-120 105 <br /> rrogate Drbromofluoromethane 506 523 800-120 105 <br /> Surrogate 12-Drchloroethane-d4 500 54 4 800-120 109 <br /> rrogate Toluene-d8 500 53 5 810-117 107 <br /> rrogate 4-Bromofluoroben_ene 500 55 2 740-121 110 <br /> rrt-butyl <br /> 9060258-BLK2 <br />, myl methyl ether 6/9/99 ND ug/kg 500 <br /> alcohol ND 100 <br /> oiopropyl ether ND Soo <br /> oia Analytical - Petaluma *Refer to end of report for text of notes and definitions <br /> Page 46 of 49 <br />