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. SENT 8Y.SEQUOIA-Concord. ; 8--25-92 ; 12:28PM 5106870602;» 2 <br /> r - <br /> SEQUOIA NAIYTICAL <br /> 1900 Sates Avenue - Suite LM - Concord, California 94520- <br /> J <br /> NO (510) 686-9600 FAX (510) 886-9689 Z� Z�g�f <br /> w aptaa�1ari rig7nserii g'fric Cllerrt'ProJect iCl: Unocal oda; sampa�zi, �PntiAve., Aug <br /> 1 1992 <br /> Y24o1 Stanwell Drtve, Suite 400 Sample Mat Water Stookton Received: Auo 24,, 1992":.. <br /> 'Concord, CA 94520 Analysts Method; EPA 6030/8016/8020 Reported: Aug 25, 1682 <br /> "Attention: Mardo Kapreallan, P.E. First Sample #; 208-0955 <br /> TOTAL PURQEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Roporting Sample Sample <br /> Analyte Llmft I.D. I.D. <br /> Ng/L 208-0955 Matrix <br /> WATER WELL Blank] <br /> PurgBable <br /> Hydrocarbons 50 300 N.D. <br /> Benzene 0.5 N.D. N.D. <br /> Toluene 0,6 N.O. N.D. <br /> Ethyl Benzene 0.5 N.D. N.D. <br /> Total xylenes 0.5 21 N.D. <br /> i <br /> Chromatogram Pattern: Non Gasallne -- <br /> Mixture <br /> (>Cal <br /> i <br /> Qualfty Control Data <br /> Report Lima Muttlpllcatlon Factor: 1.0 1.0 <br /> Date Analyzed: 8/24/92 8/24/92 <br /> Instrument Identfticatlon: HP-4 HP4 <br /> Surrogate Recovery, 9b: 93 92 <br /> (QC Llmlts = 70-130%) <br /> I <br /> 1 <br /> Purpeable Hydrocarbons are quantitated aralmt a treah gasoline standard. <br /> Ana"s rsportad as N.D.wore not detected above the stated rapartinq limit. <br /> SEQU A ANALYTICAL <br /> 1 <br /> r <br /> cOtt A. Chleffo <br /> Project Manager 2aeoflaa.KEi <ts <br />