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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> Analytical (707) 792-1865 <br /> FAX(707) 792-0342 i <br />' ATC Associates,Inc Protect SUSD/Franklin High School Sampled 2/24199 <br /> 1117 Lone Palm Ave,Suite B Project Number na Received 311199 <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 Lirmt Recov RPD RPD <br /> Lnalyte Analyzed Level Result Result Units Recov Linuts % Limit % Notes* <br /> Blank 9030221-BLK3 <br /> Tert-amyl methyl ether 3/11/99 ND ug/kg Soo <br /> Tert-butyl alcohol ND 100 <br />' Di-isopropyl ether ND " Soo <br /> 1,2-Dtbromoethane(EDB) ND 500 <br /> 1,2-Dichloroethane ND 500 <br /> Ethanol ND 200 <br />' Ethyl tert-butyl ether ND it 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate Drbromofluoromethane 500 500 800-120 100 <br />' Surrogate 1,2-Drchloroethane-d4 500 516 800-120 103 <br /> Surrogate Toluene-d8 Soo 495 810-117 990 <br /> Surrogate 4-Bromofluorobenzene Soo 516 of 740-121 103 <br /> 9030221-BS1 <br /> Wthyl tert-butyl ether 3/9/99 500 455 ug/kg 70 0430 91 0 <br /> Surrogate Drbromofluoromethane to 500 507 It 800-120 101 <br /> Surrogate 1,2-Dichloroethane-d4 toSoo 494 if 800-120 988 <br /> Surrogate Toluene-d8 toSoo 467 It810-117 93 4 <br /> Surrogate 4-Bromofluorobenzene 500 515 740-121 103 <br /> LCS 9030221-BS2 <br /> Methyl tert-butyl ether 3/10/99 500 474 ug/kg 700-130 948 <br /> Surrogate Dibromofluoromethane to 500 53 6 11800-120 107 <br /> Surrogate 1,2-Drchloroethane-d4 of 500 564 to <br /> 800-120 113 <br />' Surrogate Toluene-d8 to 500 484 If <br /> 810-117 968 <br /> Surrogate 4-Bromofluorobenzene to500 531 to 740-121 106 <br />' LCS 9030221-BS3 <br /> Methyl tert-butyl ether 3/11199 500 446 ug/kg 700-130 89 2 <br /> Surrogate Drbromofluoromethane 500 520 to800-120 104 <br /> Surrogate 1,2-Drchloroethane-d4 500 563 to 800-120 113 <br />' Surrogate Toluene-d8 500 43 6 to 810-117 872 <br /> Surrogate 4-Bromofluorobenzene 500 503 740-121 101 <br /> Matrix Strike 9030221-MSI P903097-23 <br />' Methyl tert-butyl ether 3/9/99 500 ND 520 ug/kg 700-130 104 <br /> Surrogate Drbromofluoromethane 1, 500 492 of 800-120 984 <br /> Surrogate 1,2-Drchloroethane-d4 toSoo 555 of 800-120 111 <br />' Surrogate Toluene-d8 to 500 457 it 810-117 914 <br /> Surrogate 4-Bromofluorobenzene to 500 472 11740-121 944 <br /> 0 <br />' Sequoia Analytical-Petaluma T *Refer to end of report for text of notes and definitions <br /> Page 9 of I 1 <br />