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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> OW (707) <br /> 1865 <br /> Analytical 792- 342 <br /> FAX{707) 792-0342 <br /> 1 ATC Associates,Inc Project SUSD/Franklin High School Sampled 2/24/99 <br /> 1117 Lone Palm Ave,Suite B Project Number na Received 3/1/99 <br />' Modesto,CA 95351 Project Manager Tom Lutterman Reported 3/15/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Litruts % Limit % Notes* <br /> Batch 9030174 Date Prepared 3/6199 Extraction Method EPA 5030 soils WOH <br /> Blank 9030174-BLK1 <br /> Tert-amyl methyl ether 3/9/99 ND ug/kg 1000 <br /> Tert-butyl alcohol '0 ND 20000 <br /> Di-isopropyl ether ND 1000 <br /> 1,2-Dibromoethane(EDB) toND 1000 <br /> 1,2-D,chloroethane ND to <br /> 1000 <br /> Ethanol ND 40000 <br /> Ethyl tert-butyl ether ND 1000 <br /> Methyl tert-butyl ether ND 1000 <br />' Surrogate Dlbromofluoromethane " 2000 1970 800-120 965 <br /> Surrogate 1 2-Dichloroethane-d4 of2000 2030 800-120 102 <br /> Surrogate Toluene-d8 " 2000 2030 810-117 102 <br /> Surrogate 4-Bromofluorobenzene of 2000 2000 Of <br /> 740-121 100 <br /> 10 Ak 9030174-BLK2 <br /> Tert-amyl methyl ether 3/10/99 ND ug/kg 1000 <br /> Tert-butyl alcohol I. ND 20000 <br /> Di-isopropyl ether ND 1000 <br /> 1,2-Dibromoethane(EDB) ND 1000 <br /> 1,2-Dichloroethane ND 1000 <br /> Ethanol ND 40000 <br /> Ethyl tent-butyl ether ND 1000 <br /> Methyl tert-butyl ether ND 1000 <br /> Surrogate Dibromofluoromethane " 2000 1950 800-120 975 <br />' Surrogate 1,2-Dechloroethane-d4 to 2000 1910 to 800-120 955 <br /> Surrogate Toluene-d8 of 2000 2010 1181 0-117 101 <br /> Surrogate 4-Bromofluorobenzene to 2000 2030 740-121 102 <br />' LCS 9030174-BS1 <br /> Methyl tert-butyl ether 3/9/99 2000 2090 ug/kg 700-130 105 <br /> Surrogate' Debrornafluoromethane 2000 2030 800-120 102 Surrogate 1,2-Dichloroethane-d4 It2000 2110 to800-120 106 <br /> Surrogate Toluene-d8 to 2000 2000 to <br /> 810-117 100 <br /> Surrogate 4-Bromofluorobenzene " 2000 1930 of 740-121 965 <br />' LCS 9030174-13S2 <br /> Methyl tert-butyl ether 3/10/99 2000 2050 ug/kg 700-130 103 <br /> Surrogate Debromofluoromethane If 2000 1980 800-120 990 <br /> Surrogate 1,2-Dechloroethane-d4 " 2000 2000 800-120 100 <br /> Surrogate Toluene-d8 to 2000 1980 10 810-117 990 <br /> JW41gate <br /> 90 <br /> agate 4-Bromofluorobenzene 2000 —.- 2020 740-121 101 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br />' Page 7 of I <br />