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Hydro Environmental Technologies, Inc - Project 007-346 <br /> Central California Traction Company <br /> Stockton, California <br /> TEG PROJECT 900712E <br /> QA1QC DATA - MATRIX SPIKE ANALYSES - SOIL <br /> SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> NUMBER ANALYZED m /k mg!! m2/k mqlkg mg/kg <br /> 000714 1200 B-6-30 <br /> Spiked Conc 7120100 00100 00100 00100 00100 00300 <br /> Measured Conc 00090 00093 00089 00092 00308 <br /> %Recovery 900% 930% 890% 920% 1027% <br /> Spiked Conc 7120100 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 /> 000714 1200 B-6-30 <br /> Spiked Conc 7121100 00100 0 0100 00100 00100 00300 <br /> Measured Conc 00076 00080 00078 00082 00271 <br /> %Recovery 760% 800% 780% 820% 903% <br /> Spiked Conc 7121100 00100 00100 00100 00100 00300 <br /> Measured Conc 00081 00083 00086 00076 00266 <br /> %Recovery 810% 830% 860% 760% 887% <br /> RPD 64% 37% 98% 76% 19% <br /> 000714 1200 B-6-30 <br /> Spiked cone 7iz1/oo 00100 00100 00100 0 Of 00 00300 <br /> Measured Conc 0 0076 00079 00080 00081 00274 <br /> %Recovery 760% 790% 800% 810% 913% <br /> Spiked Conc 7121100 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-Northem 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 957x2 Phone {916) 853-8010 Pax {916) 853-8020 <br />