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Hydro Environmental Technologies, Inc - Project 007-346 <br /> 41�!9 <br /> Central California Traction Company <br /> Stockton, California <br /> TEG PROJECT#00712E <br /> QA/QC DATA - MATRIX SPIKE ANALYSES - SOIL <br /> SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> NUMBER ANALYZED mg/kg mg/kg mg/kg m2/km2lkq m /kg <br />' 000714 1200 B-6-30 <br /> Spiked Conc 7/20/00 00100 00100 00100 00100 00300 <br /> Measured Conc 00090 00093 00089 00092 00308 <br /> % Recovery 900% 930% 890% 920% 1027% <br /> Spiked Conc 7/20100 00100 00100 00100 00100 00300 <br /> Measured Conc 00085 00092 00090 00093 00302 <br />' % Recovery 850% 920% 900% 930% 1007% <br /> RPD 57% 11% 11% 11% 20% <br /> a <br /> 000714 1200 B-6-30 <br /> Spiked Conc 7/21/00 00100 00100 00100 00100 0 0300 <br /> Measured Conc 00076 00080 00078 0 0082 00271 <br /> % Recovery 760% 800% 760% 820% 903% <br /> 1 Spiked Conc 7/21/00 00100 00100 0 0100 00100 00300 � <br /> Measured Conc 00081 00083 00086 00076 00266 <br />' % Recovery 810% 830% 86 0% 760% 887% <br /> RPD 64% 37% 98% 76% 19% <br /> I <br /> 000714 1200 B-6-30 <br />' Spiked Conc 7121100 00100 00100 00100 00100 00300 <br /> Measured Conc 00076 00079 00080 00081 00274 <br /> % Recovery 76 0% 790% 800% 810% 913% <br />' Spiked Conc 7/21100 00100 00100 00100 00100 00300 <br /> Measured Conc 00078 00083 00083 00075 00256 <br />' % Recovery 780% 830% 830% 750% 853% <br /> RPD 26% 49% 37% 77% 68% <br />' ACCEPTABLE RPD LIMIT= 15% <br /> ANALYSES PERFORMED IN TEG-Northern Caldornia'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 8Q10 Fax {916) 853-8020 <br />