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680 Cheake Drive Redwood City CA 94063 050)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> t�'yy Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> J <br /> Blaine Technical Services,Inc Project Shell Oil Co Sampled 12/1198 i <br /> 1680 Rogers Ave Project Number 341 East Main St,Ripon Received 1214198 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 12/29/98 <br /> `;Volatile Organic Compounds by EPA Method 8260B/Quality,Control,- <br /> 4 . ' <br /> � <br /> {_ <br /> r �+ 4. <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 8120302 Date Prepared 12/11/98 Extraction Method EPA 5030 waters <br /> Blank 8120302-BLK1 <br /> Methyl tert-butyl ether 12/11/98 ND ug/l 100 <br /> Surrogate Dibromofluoromethane if 500 486 " 860-118 972 <br /> Surrogate 12-Drchloroethane-d4 If 500 412 if 800-120 82 4 <br /> Surrogate Toluene-d8 if 5 00 4 77 880-110 95 4 <br /> Surrogate 4-Bromofluorobenzene IF <br /> 5 00 4 76 860-115 952 <br /> Blank 8120302-BLK2 <br /> Methyl tert-butyl ether 12/15/98 _ ND ug/l 100 _ <br /> Surrogate Dibromofluoromethane IF500 526 IF 860-118 105 <br /> Surrogate 1,2-Drchloroethane-d4 " 500 523 800-120 105 <br /> Surrogate Toluene-d8 IF500 527 or 880-110 105 <br /> Surrogate 4-Bromofluorobenzene If <br /> 500 509 It <br /> 860-115 102 <br /> LCS 8120302-BS1 <br /> Surrogate Dibromofluoromethane 12111/98 500 483 u9/1 860-118 966 <br /> Surrogate 1,2-Drchloroethane-d4 500 417 800-120 834 <br /> Surrogate Toluene-d8 500 4 75 880-110 950 <br /> Surrogate 4-Bromofluorobenzene 500 465 860-115 930 <br /> LCS 8120302-BS2 - - - - <br /> Surrogate Dibromofluoromethane 12/15198 500 507 u9/1 860-118 101 <br /> Surrogate 1,2-Dichloroethane-d4 it 500 518 IF 800-120 104 <br /> Surrogate Toluene-d8 IF 500 510 01 880-110 102 <br /> Surrogate 4-Bromofluorobenzene It500 506 IF 860-115 101 <br /> Matrix Spike 8120302-MSI P812085-01 <br /> Surrogate Dibromofluoromethane 12/11/98 Soo 4 76 ug/1 860-118 952 <br /> Surrogate 1,2-Drchloroethane-d4 if 500 402 it 800-120 804 <br /> Surrogate Toluene-d8 if 500 468 if 880-110 936 <br /> Surrogate 4-Bromofluorobenzene 500 472 If 860-115 944 <br /> Matrix Spike D_up 8120302-MSD1 P812085-01 <br /> Surrogate Dibromofluoromethane 12111/98 500 492 u9/1 860-118 984 <br /> Surrogate 1,2-Drchloroethane-d4 IF 500 422 800-120 844 <br /> Surrogate Toluene-d8 500 468 880-110 936 <br /> Surrogate 4-Bromofluorobenzene 500 459 IF860-115 918 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> f <br /> Page 5 of 6 <br />