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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (9z5)988-9600 FAX(925)988-9673 <br /> a- ) Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1 ATC Associates, Inc Client Proj ID Gardner Property 62586 000104 Sampled 09/29/98 <br /> ' 1260 Graphics Drive Sample Descript MW-3 Received 09/29/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/01/98 <br /> „ Attention Tom Letterman Lab Number 9809101-03 Reported 10J13198 <br /> OC Batch Number GC1 001 98BTEX06A <br /> Instrument ID GCHP06 <br /> Total Purgeabie Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> TPPH as Gas 50 __ 170 <br /> Benzene 0 50 1 1 <br /> Toluene 050 _ 067 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 21 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 109 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 4 <br />