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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> AnalyticalFAX (707) 7921865 wo <br /> (707) 792 0342 <br /> !elta Environmental Consultants Project Exxon Sampled 614/99 <br /> Gold Camp Dr Suite 200 Project Number D093-S09/7-3708ed G g ng <br /> cho Cordova CA 96,70 Project Manager Jim Brownell Reported 6/28199 <br /> ' Volatile Organic Compounds by EPA. Method 8260B/QualitN Control <br /> Sequoia Analytical - Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> nalyte %nalyzed Level Result Result Units Recov Limits % Limit % iNOtLs* <br /> WC—S9060419-BSI <br /> 90604I9-BSI <br /> ethyl tent-butyl ether _6_/1_4/99_ 5 00 4 83 U91 72 7 119 966 <br /> Surrogate Drbrontofluoronretharte -500 5 02 86 0-118 100 <br /> tu"'r-r"'g,t, <br /> gateI -DrcToluene-d8 hloroethane-d4 500 5?9 800-120 106 <br /> 500 456 880-110 9/ 3 <br /> rrogate 4-Bromofluorobenzene 500 428 86 0-115 Y5 6 <br /> yCtffhyl <br /> 9060419-BS2 - - <br /> tert-butyl ether 6/1 x/99 500 5 25 ug 1 72 7-119 10_5 <br /> ogate DibromoJ7uaroniethune 500 530 860-113 106 <br /> trroguic 1 -' Dichloroethane d45 00 503 800-1-10 101 <br /> urrogate <br /> rrogate Toluenc d8 5 00 52I 880-110 J04 4-13romoJluorohen_enc -5 00 4 99 860-115 998 <br /> krs 9060419-BS3 <br /> yl Cert-butyl ether 6r17/99 5 00 5 29 uQ1 72 7-119 106ogate Drbromofluoromethane 5 00 5 36 86 0-118 101 <br /> tgat 1 2 Dichloroethane d4 500 5.10 300-120 108 <br /> Uu" 0,r,g,:fe Toluene-d8 500 509 880 110 102 <br /> rrogate 4 Brontofuoroben_ene 5 00 4 69 86 0-115 93 8 <br /> latnc S ike 9060419-NISI P906197-02 <br /> ethyl tert-butyl ether _ _ 6/14/99 5 00 ND 445 _ ug I 72 7.1 1 g gg 0 <br /> urrogate Drbromofluoromethane S 00 ----- 5 03 -- 86 0-1 18 101 - T -- <br /> Surrogate 1 2-Dichloroethane-d4 5 00 496 800-120 992 <br /> rrogate Toluene-d8 500 506 880-110 101 <br /> rrogate 4-Bromofluorobenzene 5 00 4 79 860-115 958 <br /> atrix Spike Dup 9060419-MSD1 P906197-02 <br /> ethyl ten-butyl ether - 6/14/99 500 ND 459 ug/1 _ 727-119 91 8 200 3 10 <br /> urrogate Drbromofluoromethane 500 S 16 860-118 103 <br /> Surrogate 12-Dichloroethane-d4 5 00 493 800-120 986 <br /> rrogate Toluene d8 500 531 880-110 106 <br /> rrogate 4 Broniofluorobenzene 500 489 860-115 978 <br /> Fo.a Analyt:cal - Petaluma 'Refer to end of report for text of notes and definurons <br />' Page 6of7 <br />