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Sequoia 680 Chesapeake Dave Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> IIN 404 N VAget Lane Walnut Creek CA 94598 (510) 98B 9600 FAX(510)988 %73 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 %00 FAX (9 16)921 oloo <br />= Cambria - Client Prod ID Shell 2575 Country Club Sampled 12/12/97 _ <br />- 270 Perkins Ave Sample Descrlpt MW-14-A1 Received 12/19/97 <br />' Sonoma, CA 95476 Matrix SOLID Extracted 12/23/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/26/97 , <br /> Attention Joe Neely Lab Number 9712C93-05 Reported 01 f05j98 <br /> QC Batch Number GC122397BTEXEXB <br /> Instrument 1D GCHP22 <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 /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trfluorotoluene 70 130 116 <br /> 4-Bromofluorobenzene 60 140 63 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Alk.040� <br /> Zrmgory <br /> Project Manager Page 6 <br />