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ai q <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 `916)921-9600 FAX(916 )911 -0100 <br /> 1455 McDowell Blvd ]North Ste D Petaluma,CA 94954 707 792-1865 FAX 707 792-0342 <br /> ATC Associates, Inc Client Prot ID Gardner Property 62586 000104 Sampled 09/29/98 <br /> I" 1260 Graphics Drive Sample Descrlpt MW-4 Received 09/29/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/01/98 <br /> :-,Attention Tom Lutterman Lab Number 9809101-04 Reported 10113198 <br /> QC Batch Number GC100198BTEX06A <br /> Instrument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L. ug/L. <br /> TPPH as Gas 500 1600 <br /> Benzene 5 0 59 <br /> Toluene 50 N D <br /> Ethyl Benzene 5.0 42 <br /> Xylenes (Total) 5.0 41 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 105 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - EL.AP #1210 <br /> Project nager Page 5 <br />