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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX(707) 792-0342 <br /> i <br />' Sequoia-RC(Subbed In) Project Kayvon Kimyai Sampled 2/26/99 <br /> 680 Chesapeake Dr Project Number 9903040 Received 3/3/99 <br />' Redwood City,CA 94063 Project Manager Kayvan Kimyai Reported 3/8/99 <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 Limits % Limit % Notes" <br />' LCS 9030125-BSI <br /> Methyl tert-butyl ether 3/4/99 500 3 93 ugll 700-130 786 <br /> Surrogate Dibromofluoromethane or500 492 " 860-118 984 <br />' Surrogate 1 2-Dichloroethane-d4 it 500 521 it 800-120 104 <br /> Surrogate Toluene-d8 11 500 474 880-110 948 <br /> Surrogate 4-Bromofluorobenzene It 500 484 860-115 968 <br /> LCS 9030325-BS2 <br /> Methyl tert-butyl ether 3/5/99 500 429 ug/1 700-130 85 8 <br /> Surrogate Dibromofluoromethane 11 500 486 to 860-118 972 <br />' Surrogate 1,2-Dichloroethane-d4 it 500 505 or 800-120 101 <br /> Surrogate Toluene-d8 to 500 4 78 to 880-110 95 6 <br /> Surrogate 4-Bromofluorobenzene to 500 475 to 860-115 950 <br /> 9030125-BS3 <br /> hyl tent-butyl ether 3/5/99 500 440 ug/I 700-130 88 0 <br /> Surrogate Dibromofluoromethane 500 495 860-118 990 <br /> Surrogate 1,2-Dichloroethane-d4 500 514 800-120 103 <br /> Surrogate Toluene-d8 500 488 880-110 976 <br /> Surrogate 4-Bromofluorobenzene 500 494 860-115 988 <br /> Matrix Spike 9030125-MSI P903089-05 <br /> Methyl tert-butyl ether 3/4/99 500 ND 444 ug/1 700-130 888 <br /> Surrogate Dibromofluoromethane 500 517 860418 103 <br /> Surrogate 12-Drchloroethane-d4 500 542 800-120 108 <br /> Surrogate Toluene-d8 500 496 880-110 992 <br /> Surrogate 4-Bromofluorobenzene 500 482 860-115 964 <br />' Matrix Spike Dup 9030125-MSD1 P903089-05 <br /> Methyl tert-butyl ether 3/4/99 500 ND 439 ug/l 700-130 878 15 0 113 <br /> Surrogate Dibromofluoromethane rF 500 510 11 860-118 102 <br /> Surrogate 12-Drchloroethane-d4 of 500 543 If 800-120 109 <br />' Surrogate Toluene-d8 500 487 If880-110 974 <br /> Surrogate 4-Bromofluorobenzene 500 495 If 860-115 990 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> tPage 4of5 <br />