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r 680 Choeake drive Redwood City CA 94063 0(650)364-9600 FAX(650)364-9233 <br /> Sequoia404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 4 t ��] 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> j 1 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> lyi <br /> Blaine Technical Services,Inc Project Shell Oil Co Sampled 12/29/98 <br /> 1680 Rogers Ave Project Number 341 East Main-Ripon Received 12/31/98 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 1/I5199 <br /> 'F Volatile Organic Compounds by EPXMetlsod'8260B/QualityfContruli- <br /> t <br /> FS y <br /> ,equoia,Analyi' al'Petaluma `F SW hR r <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9010082 Date Prepared 1/6/99 Extraction Method EPA 5030 waters <br /> Blank 9010082-BLK1 <br /> Methyl tert-butyl ether 116/99 ND ug/l JOG <br /> Surrogate Dibromofluoromethane 5 00 4 95 860-118 990 <br /> Surrogate 1,2-Dichloroethane-d4 500 495 800-120 990 <br /> Surrogate Toluene-d8 500 522 880-110 104 <br /> Surrogate 4-Bromofluorobenzene 5 00 5 09 860-115 102 <br /> Blank 9010082-BLK2 _ <br /> Methyl tert-butyl ether 1/7/99 _ ND ug/1 100 <br /> Surrogate Dibromofluoromethane Soo 4 71 1860-118 94 2 <br /> Surrogate 1,2-Dechloroethane-d4 5 00 4 81 IF800-120 962 <br /> Surrogate Toluene-d8 5 00 4 74 IF 880-110 94 8 <br /> Surrogate 4-Bromofluorobenzene IF500 4 63 IF860-115 92 6 <br /> Blank 9010082-BLK3 <br /> Methyl tert-butyl ether 1/8/99 ND ug/I 100 <br /> Surrogate Dibromofluoromethane 500 4 76 11860-118 95 2 <br /> Surrogate 12-Dechloroethane-d4 500 478 it800-120 95 6 <br />-Surrogate-Toluene-d8 —500 509 IF <br /> 88 0-110-102 <br /> Surrogate 4-Bromofluorobenzene IF 500 491 If <br /> 860-115 982 <br /> LCS 9010082-BSI <br /> Surrogate Dibromofluoromethane 1/6/99 500 5 04 u9/1 860-118 101 <br /> Surrogate 12-Dechloroethane-d4 IF 500 5 14 800-120 103 <br /> Surrogate Toluene-d8 if500 509 880-110 102 <br /> Surrogate 4-Bromofluorobenzene IF500 492 11 860-115 964 <br /> LCS 9010082-BS2 <br /> Surrogate Dibromofluoromethane 1/7/99 5 00 506 ug/d 860-118 101 <br /> Surrogate 12-Dechloroethane-d4 500 522 800-120 104 <br />-Surrogate Toluene-d8 500 502 880-110 100 <br /> Surrogate 4-Bromofluorobenzene 500 495 860-115 990 <br /> LCS 9010082-BS3 <br /> Surrogate Dibromofluoromethane 1/8/99 500 473 ug/l 860-118 94 6 <br /> Surrogate 1,2-Dechloroethane-d4 11500 504 800-120 101 <br /> Surrogate Toluene-d8 if500 489 880-110 978 <br /> Surrogate 4-Bromofluorobenzene It500 469 IF 860-115 938 <br />_Matrix Spike- _ 9010082-MS1_P901028-04_ <br /> Surrogate Dibromofluoromethane 1/6/99 500 504 u9/1 860-118 101 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions JP <br /> Page 5 of 7 <br />