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MOM Ir <br /> Geomatrix <br /> TABLE A-6 <br /> SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR DIOXINS & FURANS NOVEMBER 20031 <br /> TAOC Tracy Gravel Pits <br /> Tracy,California <br /> Notes: <br /> 1. Soil samples collected by Geomatrix Consultants,Inc.,and analyzed by Severn Trent Laboratories(STL San Francisco),Inc.,of Pleasanton,California <br /> for Metals using EPA Method 8290. <br /> 2. Toxicity equivalency factor(TEFs;unitless)from the World Health Organization(WHO)adopted from F.X.R.van Leeuwen, 1998(WHO-98). <br /> 3. Calculated as the sum of congener concentrations after each has been multiplied by its TEF. <br /> 4. Concentrations not detected at or above the laboratory reporting limit were assigned a concentration of 0 pg/g to calculate TEQ. <br /> Abbreviations: <br /> TCDD=tetrachlorodibenzo-p-dioxin <br /> PeCDD=pentachlorodibenzo-p-dioxin <br /> HxCDD=hexachlorodibenzo-p-dioxin <br /> HpCDD=heptachlorodibenzo-p-dioxin <br /> OCDD =octachlorodibenzo-p-dioxin <br /> TCDF=tetrachlorodibenzofuran <br /> PeCDF=pentachlorodibenzofuran <br /> HxCDF=hexachlorodibenzofuran <br /> HpCDF=heptachlorodibenzofuran <br /> OCDF=octachlorodibenzofuran <br /> TEQ=toxicity equivalence <br /> TEF=toxicity equivalency factor(unitless) <br /> EPA=U.S.Environmental Protection Agency <br /> U=target analyte was not detected at or above the laboratory reporting limit shown. <br /> [:\Doc Safe\7000s\7066.001\Reports\2005 Soil Investigation and Well Survey\4 Appendixes\Appendix A\Appndx A Sum Tbls Page 2 of 2 <br />