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t <br /> i <br /> Sequoia 660 Chesapeake D-ive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404N Wiget!_ane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 6 <br /> P <br /> k <br /> 6 <br /> » Ground Zero Analysis, Inc Client Prol ID 97-163 Sampled 12/15/97 <br /> 1714 Main St Sample Descript INFLU Received 12/16/97 <br /> = Escalon, CA 95320 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 12/18/97 <br /> -Attention Girea Stahl Lab Number 9712970-02 Reported 12f22/97 <br /> QC Batch Number GC121897BTEX02A <br /> instrument ID GCHP2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> II ug/L tag/L <br /> TPPH as Gas 500 1400 <br /> Bertzene 50 53 <br /> Tokeene, 50 39 <br /> Ethyl Berne 50 16 <br /> Xti6nngotal) 50 77 <br /> C m Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> frifluorotoluene 70 130 104 <br /> i <br /> } <br /> Analytes reported as N D were not(present above the stated limit of detection <br /> z <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> F <br /> I <br /> y Penner <br /> Project Manager Page 2 <br /> i <br />