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1 <br /> ID Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> Analytical (707) 792-1865 <br /> FAX(707) 792-0347- <br /> ATC <br /> 92-0342ATC Associates,Inc Project Ripon USD Sampled 7/15/99 <br /> 1117 Lone Palm Ave, Suite B Project Number 13099 0001 Received 7/20/99 <br /> iModesto,CA 95351 Project Manager Drew Van Allen Reported 8/6/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Lirruts Limit Result Units Nates* <br /> ' RUSD-MW4-20 5 P907408-0I Soil <br /> Gasoline 9070408 7/23/99 7/23/99 400 ND ug/kg <br /> Benzene 200 ND " <br /> Toluene " " " 200 ND " <br /> Ethylbenzene 200 ND " <br /> Xylenes(total) 400 ND " <br /> Surrogate a,a,a-Trifluorotoluene to to if 650-135 110 % <br /> ' Surrogate 4-Bromofluorobenzene 650-135 960 if <br /> RUSD-MW4-35 5 P907408-02 Soil <br />' Gasoline 9070408 7/23/99 7/23/99 400 ND ug/kg <br /> Benzene Ip 200 ND " <br /> Toluene 200 ND " <br /> Ethylbenzene 200 NDdidfti " <br /> enes(total) 400 ND " <br /> agate a,a,a-Trfluorotoluene 6.50-135 108 % <br /> Surrogate 4-Bromofluorobenzene 650-135 923 „ <br />' RUSD-MW5-20 5 P907408-03 Soil <br /> Gasoline 9070408 7/23/99 7/23/99 400 ND ug/kg <br /> Benzene 200 ND <br /> Toluene 200 ND <br /> Ethylbenzene 200 ND " <br /> Xylenes(total) 400 ND <br /> Surrogate aa a-Trifluorotoluene 650-135 102 % <br /> Surrogate 4-Bromofluorobenzene to 650-135 900 " <br /> RUSD-MW5-35 5 P907408-04 Soil <br />' Gasoline 9070408 7/23/99 7/23/99 400 ND ug/kg <br /> Benzene 200 ND " <br /> Toluene 200 ND " <br /> Ethylbenzene 200 ND " <br /> Xylenes(total) 400 ND " <br /> Surrogate a a,a-Triuorotoluene 650-135 108 % <br /> Surrogate 4-Bromofluorobenzene 650-135 870 <br /> 1 <br /> Sequoia Analytical-Petaluma '"Refer to end of report for text ofnotes and definitions <br /> Page 2 of 9 <br />