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680 Chesapeake Drive Redwood City CA 94063 (650)3649600 FAX(650)364-9233 <br /> 4 Sequoia 404 N WISet Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br />' �� <br /> Analytical <br /> ��} 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-o100 <br /> ' �" i 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Sequoia-RC(Subbed In) Project Kayvon Kimyai Sampled 2/23/99 to 2/25/99 <br /> 680 Chesapeake Dr Project Number 9902E24/E25 Received 3/3/99 <br /> Redwood City,CA 94063 Project Manager Kayvan Kim ai Reported 3/12/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> IDate Spike Sample QC Reporting Limit Recov RPD RPD <br /> JAnalyte Anal ed Level Result Result Units Recov Limits % Limit % Notes <br /> LCS 9030177-BS1 <br /> Methyl tert-butyl ether 3/8/99 500 4 75 ug/l 700-130 95 0 <br /> Surrogate Dibromofluoromethane 500 5 05 It <br /> 860-118 101 <br /> Surrogate 1,2-Dichloroethane-d4 500 507 or 800-120 101 <br /> Surrogate Toluene-d8 500 480 IF <br /> 880-110 960 <br /> Surrogate 4-Bromofluorobenzene IF 500 472 It 860-115 94 4 <br /> LCS — 9030177-BS2 <br /> Methyl tert-butyl ether 319199 500 437 ugll 700-130 874 <br /> Surrogate Dibromofluoromelhane 500 487 860-118 974 <br /> Surrogate 12-Dichloroethane-d4 500 503 800-120 101 <br /> Surrogate Toluene-d8 500 4 71 880-110 942 <br /> Surrogate 4-Bromofluorobenzene 500 4 70 IF 860-115 940 <br /> Whyl <br /> 9D3D177-BS3 tert-butyl ether 3/9/99 500 4 08 ug/I 700-130 81 6 <br /> urrogate Dibromofluoromethane 5 00 4 32 860-118 864 <br /> Surrogate 1 2-Dichloroethane-d4 500 3 99 " 800-120 79 8 <br /> ISurrogate Toluene-d8 I' 500 442 IF 880-110 88 4 <br /> Surrogate 4-Bromofluorobenzene 500 443 if 860-115 88 6 <br /> Matnx Spike 9030177-MSI P903068-03 <br /> Methyl tert-butyl ether 3/8/99 500 ND 5 01 ug/l 700-130 100 <br /> Surrogate Dibromofluoromethane " 5 00 502 If <br /> 860-118 100 <br /> Surrogate 1,2-Dichloroethane-d4 500 525 800-120 105 <br />` Surrogate Toluene-d8 500 4 78 880-110 95 6 <br /> I! Surrogate 4-Bromofluorobenzene 500 4 74 860-115 948 <br /> Matrix Spike Dup 9030177-MSD/ P903068-03 <br /> IMethyl tert-butyl ether 3/8/99 500 ND 5 05 ug/I 700-130 101 150 0 995 <br /> Surrogate Dibromofluoromethane " 500 502 860-118 100 <br /> Surrogate 1 2-Dichloroethane-d4 IF 500 520 800-120 104 <br /> Surrogate Toluene-d8 If Soo 4 79 880-110 958 <br /> Surrogate 4-Bromofluorobenzene IF500 472 860-115 944 <br /> Batch 9030221 Date Prepared _3/9199 Extraction Method EPA 5035 <br /> Blank 9030221-BLKI <br /> Tert-amyl methyl ether 3/9/99 ND mg/kg 000500 <br /> Tert-butyl alcohol ND 0 100 <br /> Di-isopropyl ether ND 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> Dichloroethane ND 000500 <br /> equota Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 19 of 22 <br />