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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> ' <br /> —MW Analytical 170" 792-1865 <br /> FAX(707) 792-0342 <br /> ATC Associates, Inc Project Ripon USD <br /> Sampled 7115199 <br /> 1117 Lone Palm Ave,Suite B Project Number 13099 0001 Received 7/20199 <br /> ' Modesto,CA 95351 Project Manager Drew Van Allen Reported 8/6199 <br /> Volatile Organic Compounds by EPA Method 8260E <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> ' RUSD-MW5-35 5 P907408-04 Soil <br /> Tert-amyl methyl ether 9070490 7123199 7/23199 Soo ND ug/kg <br /> Tert-butyl alcohol 100 ND <br /> Di-isopropyl ether 500 ND <br /> 1,2-Dibromoethane(EDB) 500 ND " <br /> 1,2-Dichloroethane Soo ND " <br /> ' Ethanol 200 ND <br /> Ethyl tert-butyl ether " 500 ND " <br /> Methyl tert-butyl ether 500 ND " <br /> Surrogate Dibromofluoromethane 800-120 920 % <br /> Surrogate 1,2-Dtchloroethane-d480 0-120 85 6 " <br /> „ <br /> Surrogate Toluene-d8 810-117 93 6 <br /> Surrogate 4-Bromofluorobenzene " 740-121 910 <br /> r <br /> t <br /> r <br /> Sequoia Analytical-Petaluma *Refer to end ofreport for text of notes and defrnrtions <br />' Page 5 of 9 <br />