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E <br /> Sequoia 680 Chcsapcakc DrLVe Rcdwood Cety,CA 94463 (654) 364 9600 FAX(650)364 9233 <br /> 404 N Wlgct Lane Walnut Crcck CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 StnkcrAvenue,Swtc 8 Sacramento, CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> 1W 0 <br /> r <br /> Gettler Ryan/Geostrategies Client Proj ID Unocal 4855 18 E Sampled 12/29/97 <br /> 3164 Gold Camp Drive #240 Sample Descript Eff Received 12/29/97 <br /> Rancho Cordova, CA 95670 Matrix AIR 12 3i Analyzed 97 E <br /> Analysis Method 8015Mod/8020 Y / / <br /> Attention Greg Gurss Lab Number 9712G67-02 Reported 01 f0f98 <br /> 5 <br /> i"9 tl a i S S„ , u!1 sS E S <br /> s n s nsiE 1 v: 1 Ess u i s s s o ' ' <br /> 1 1 ii SSS 1 i E i Iii t SS SS 1 4 t S ' t i ti ! ii S 1 5 1 1 IS ii.f !t <br /> dC Batch Number GC123197BTEX02A <br /> instrument!D GCHP2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> ND <br /> TPPH as Gas 0°0 N D <br /> Benzene 0 .10 N D <br /> Toluene 0 10 N D <br /> Ethyl Benzene 010 N D <br /> Xylenes (Total) <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 89 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> *Oegory Page 2 <br /> Project Manager <br />