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Sequoia 1455 McDowell Blvd North Ste D <br /> /� <br /> Petaluma CA 94954 <br /> Analytical FAX(707) 792-1865 <br /> (707) 792-0342 <br /> ERI Project TOSCO Sampled 5/17/99 <br /> 73 Digital Dr Suite 100 Project Number Tosco 76#5886/205504777 Received 5/13/99 <br /> Novato,CA 94949 Project Manager Keith Romstad Reported 5/25/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 80151%V8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> IAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS 9050346-BSI <br /> Gasoline 5/13/99 1000 968 ug/l 650-135 968 <br /> Surrogate 4-Bromofluorobenzene 300 291 It 650-135 970 <br /> Matrix Spike 9050346-MS1 P90515"7 <br /> Gasoline 5/13/99 1000 878 1030 ug/l 650-135 942 <br /> Surrogate 4-Bromofluorobenzene 300 281 650-135 93 7 <br /> Matrix Spike Dup 9050346-MSD1 P905154-07 <br /> Gasoline 5/13199 1000 878 1040 ug/l 650-135 952 200 106 <br /> Surrogate 4-Bromofluorobenzene 300 266 of 650-135 887 <br /> gquoia Analytics}-Petaluma -. *Refer to end of report for text of notes and definitions <br /> Page 5 of 7 <br />