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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 4D 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> fwl� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Cambria " Client Prod ID Shelf 2575 Country Club Sampled 12/12/97 <br /> 270 Perkins Ave Sample Descript MW-13-A2 Received 12/19/97 " <br /> Sonoma, CA 95476 Matrix SOLID Extracted 12/23/97 <br /> r Analysis Method 8015Mod/8020 Analyzed 12/26/97 <br /> Attention Joe Neely M Lab Number 9712093-02 " Reported 01(05198 - <br /> QC Batch Number GC122397BTEXEXB <br /> Instrument ID GCHP7 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatograrn Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 91 <br /> 4-Bromofluorobenzene 60 140 75 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 4 <br /> Mlk gory <br /> Project Manager Page 3 <br />