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Sequoia680 Chesapeake Drive Redwood Cary,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 11 Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-%00 FAX(916)92 1-0 100 <br /> Envires - - --- - - - - Client Prod 'ID - Shell Stockton - --- - - Sampled 09/18/97 <br /> 270 Perkins Ave Sample Descnpt SS-1C Received 09/19/97 ; <br />= Sonoma, CA 95476 Matrix SOLID Extracted 09/23/97 <br />~ Analysis Method 8015Mod/8020 Analyzed 09/25/97 <br /> Attention J Gaarder _ Lab Number 9709C12-03 _ _ _ _ Reported 09f26197 1-1 <br /> OC Batch Number GCO923976TEXEXC <br /> Instrument ID GCHP01 <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 /> Trlfluorotoluene 70 130 94 <br /> 4-Bromofluorobenzene 60 140 71 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> M gory <br /> Project Manager Page 4 <br />