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� Sequoia 1455 McDowell Blvd Norah Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX (707) 792-0342 <br /> elta Environmental Consultants Project Exxon Sampled 5/26199 <br /> 164 Cold Camp Dr, Suite 200 Project Number 7-3708/D093-809 Received 5/28/99 <br /> Rancho Cordova CA 95670 Project Manager Jim Browned Repo ped 6/21,99 <br /> `ti olatile Organic Compounds by EPA Method 8260E/Quality Control <br /> Sequoia Analytical - Petaluma <br /> Date, Spike Sample QC Reporting Limit Recov RPD RPD <br /> nalvte Analyzed Level Result Result Units Recov Limits % Limit % tiot 5` <br /> Eank continued 9060258-BLK1 <br /> thvl tent-butyl ethtr 6/8/99 ND Ug,kg 5 00 <br /> ethyl te_t-butyl ether `D 5 00 <br /> turrogate Dibromofluoromethanc 500 523 800-120 105 <br /> urrogate 1 2 Dichloroethane d4 500 S4 4 800-120 109 <br /> urrogate Toluene d8 500 S3 5 81 0-117 107 <br /> Surrogate 4-Bromoj7uorubt n the 500 5-) 74 0-121 110 <br /> k-1 <br /> nk 906028-8[ K2 <br /> 5 00 <br /> rt-amyl methyl tthtr 6/9 99 ND ukg <br /> Teri butyl dIC01`01 `1D 100 <br /> Ui-isoprop,d ether VD 5 00 <br /> -Dibromoethane(EDr3) ND 5 00 <br /> ! 2-Dichloroethane ND 5 00 <br /> anol ND 200 <br /> yl ter-butvl ether YD 5 00 <br /> bthyl <br /> te_rt-butyl ether ND 5 00 <br /> Surrogate DibromofluoromEthane 500 51 7 800-120 103 <br /> lurrogate 1 2-Dichloraethane-c14 50 0 )4 9 800-120 110 <br /> urrogatt Toluene d8 500 5' S 81 0-117 105 <br /> Surrogatc 4 Bromofluoroberi_ene 500 53 2 740 121 106 <br /> lank 9060258-B1 K3 <br /> ert amyl methyl ether 6/9/99 ND u&.'kg 5 00 <br /> Ter(-butyl alcohol ND 100 <br /> 1i-isopropyl ether SID 500 <br /> 2-Dibromoethane(EDB) ND 5 00 <br /> 1,2-Dichloroethane ND 500 <br /> (tethyl <br /> hanol ND 200 <br /> hyl tert-butyl ether - ND ' 500 tert-butyl ether _ ND 500 <br /> Surrogate Dtbromofluoromethane 500 33 0 800-120 106 <br /> urrogate 1 2 Dtchloroethane d4 500 54 6 800-120 109 <br /> urrogate Toluene-d8 50 0 54 1 81 0-117 108 <br /> Surrogate 4 Bromof7uorobenzerte 50 0 555 74 0-121 111 <br /> kc,—!yl <br /> 9060258-BSI tett-butyl ether _ 6/8/99 500 56 9 ug/kg 75 8-124 114 <br /> Surrogate Dibromofluoromethane 500 544 800-120 109 <br /> tu <br /> rrogate 12-Dichloroethane-d4 500 578 800-120 116 <br /> rrogate Toluene-d8 500 544 " 81 0-117 109 9 <br /> tqruo,a <br /> gate 4-Bramofluorobenzene 50 0 55 7 740-121 111 <br /> Analytical - Petaluma *Refer to end of report for text of notes and definitions <br /> Page 16 of 18 <br />