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Hydro Environmental Technologies, Inc - Project 007-346 <br /> I Central California Traction Company <br /> Stockton, California <br /> E <br /> i <br />' TEG PROJECT#00712E <br />' BTEX 8 MTBE (EPA 8020A) ANALYSES OF WATERS <br /> SAMPLE DATE DATE MTBE` BENZENE TOLUENE ETHYLBNZ XYLENES <br /> NUMBER SAMPLED ANALYZED u /L ug/L u /L u /L u /L <br /> BLANK 7/19/00 nd nd nd nd nd <br /> 000712 1715 BI 7/12/00 7/19/00 nd nd nd nd nd <br />' 000713 1140 B2 7/13100 7/19/00 nd nd nd nd 29 <br /> 000713 1630 83 7113100 7119100 nd nd nd 063 43 <br /> 000714 0730 B5 7114100 7119100 nd nd 054 nd nd <br />' 0007141130 84 7114100 7119/00 nd nd nd nd nd <br /> 0007141550 B6 7114100 7119100 nd nd nd nd nd <br /> 000714 1550 B6 dup 7/14100 7119100 nd nd nd nd nd <br />' REPORTING LIMITS 20 05 05 05 05 <br /> 'nd' INDICATES NOT DETECTED AT LISTED REPORTING LIMITS <br /> MTBE VALUES MAY REPRESENT OTHER COELUTING COMPOUNDS <br /> 1 i <br /> QA/QC DATA - LCS/LCSD - WATERS <br />' SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> NUMBER ANALYZED ug1L ug/L ug1L ug1L ug1L <br />' Spiked Conc 7119100 50 50 50 50 150 <br /> Measured Conc 52 56 55 54 174 <br /> % Recovery 104% 112% 110% 108% 116 0% <br /> Spiked Conc 7119100 50 50 50 50 150 <br /> Measured Conc 48 51 49 51 16 0 <br /> %Recovery 96% 10251a 98% 102% 106 7% <br />' RPD 80% 93% 115% 57% 84% <br />' ACCEPTABLE RPD LIMIT= 15% <br /> ANALYSES PERFORMED IN TEG-Northern California's DHS CERTIFIED LAB <br /> ANALYSES PERFORMED BY Mr Henry Wilkinson <br /> DATA REVIEWED BY Mr Mark Jerpbak <br />' 11350 Monier Park Place Rancho Cordova CA 95742 Phone (916) 853-8010 Fax (916) 85-- 802C <br />