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Geomatrix
<br /> TABLE 4
<br /> SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR DIOXINS & FURANS '
<br /> TAOC Tracy Gravel Pits
<br /> Tracy, California
<br /> Concentrations in picograrns per gram
<br /> Dry Weight Wet Weight
<br /> Sample Location GMX-27-5.0 GMX-27-11 .5 GMX-324 .0 GMX-34-5.0 GMX-27-5.0 GMX-27- 11 .5 GMX-32- 1 .0 GMX-34-5.0
<br /> Sample Type Soil Soil Soil Soil Soil Soil Soil Soil
<br /> Sample Collection 8/24/2005 8/24/2005 8/23/2005 8/24/2005 8/24/2005 8/24/2005 8/23/2005 8/24/2005
<br /> Concen - Conten- Conten - Conten-
<br /> Concen -tration WHO tration WHO Concen -tration WHO tration WHO tration WHO tration WHO Concen -iration WHO Concen -tration WHO
<br /> Congeners TEF TCDD Eq . Congeners TEFs TCDD Eq . Congeners TEFs TCDD Eq . Congeners TEFs TCD!) Eq . Congeners TEFs TCDD Eq . Congeners TEFs TCDD Eq . Congeners TEFs TCDD Eq . Congeners FEFs TCDD Eq .
<br /> I 1997 / 1997 (PP/g) (Pg/g) 1997 (Pg/g) (Pg/g) 1997 (Pwg)
<br /> (PP,/g) 1997 (Pg/g) ( Pg/g) 1997 ( Pg/g) (Pwg) 1997 (Pg/g) ( Pwg) 1997 W/O (Pg g) (Pwg) (Pg g)
<br /> Dioxin
<br /> 2 , 3,7,8-TCDD 0.22 U 1 .00 0 5 U 1 . 00 0 0.49 U 1 . 00 0 0.48 U 1 .00 0 0. 2 U 1 .00 0 4. 3 U 1 . 00 0 0.4 U 1 .00 0 0.4 U 1 .00 0
<br /> 1 , 2,3 ,7, 8-PeCDD 0. 51 U 1 .00 0 11 U 1 .00 0 1 .2 U 1 .00 0 0. 85 U 1 . 00 0 0.4 U 1 .00 0 9 . 5 U 1 .00 0 1 . 0 U 1 .00 0 0. 7 U 1 .00 0
<br /> 1 ,2,3 ,4,7, 8 -HxCDD 0. 38 U 0. 10 0 11 U 0. 10 0 0. 74 U 0. 10 0 0. 68 U 0. 10 0 0. 3 U 0. 10 0 9.5 U 0. 10 0 0. 6 U 0. 10 0 0. 6 U 0. 10 0
<br /> 1 ,2 ,3,6,7, 8 -HxCDD 0.38 U 0. 10 0 11 U 0. 10 0 0. 83 U 0. 10 0 0. 69 U 0. 10 0 0. 3 U 0. 10 0 9. 5 U 0. 10 0 0. 7 U 0. 10 0 0. 6 U 0. 10 0
<br /> 1 ,2 ,3 ,7, 8 ,9-HxCDD 0.36 U 0. 10 0 10 U 0. 10 0 0. 89 U 0. 10 0 0. 63 U 0. 10 0 0. 3 U 0. 10 0 8 . 7 U 0. 10 0 0. 8 U 0. 10 0 0. 5 U 0. 10 0
<br /> 1 , 2,3,4,6,7 , 8 -HpCD 1 . 1 U 0. 01 0 16 J 0.01 0. 16 1 . 6 U 0.01 0 0.95 U 0.01 0 1 .0 U 0.01 0.00 13 .8 J 0.01 0. 14 IA 13 0.01 0.00 0. 8 U 0. 01 0.00
<br /> OCDD 1 5 Ul 0.0001 1 0 1 160 1 0. 0001 1 0.016 1 9.9 11 0. 0001 1 0.00099 1 5.3 J 1 0. 0001 1 0. 00053 1 4.3 U 0. 0001 1 0. 00 1 138.4 1 0. 0001 1 0.01 8.6 3 1 0.0001 1 0. 00086 1 4.6 J 1 0.0001 1 0.00046
<br /> Furan
<br /> 2, 3 ,7,8-TCDF 0. 18 U 0. 10 0 3 . 8 U 0. 10 0 0.37 U 0. 10 0 0. 33 U 0. 10 6 0.2 U 0. 10 0 3 . 3 U 0. 10 0 0. 3 U 0. 10 0 0. 3 U 0. 10 0
<br /> 1 ,2 ,3 ,7 , 8-PeCDF 0.3 U 0.05 0 4. 2 U 0.05 0 0.56 U 0.05 0 0. 5 U 0.05 0 0. 3 U 0.05 0 3 . 6 U 0.05 0 0. 5 U 0.05 0 0.4 U 0.05 0
<br /> 2,3,4,7, 8-PeCDF 0. 31 U 0. 50 0 11 U 0.50 0 0. 63 U 0. 50 0 0. 54 U 0. 50 0 0. 3 U 0. 50 0 9. 5 U 0.50 0 0. 5 U 0. 50 0 0. 5 U 0.50 0
<br /> 1 , 2,3 ,4,7,8 -HxCDF 0.46 U 0. 10 0 19 U 0. 10 0 0. 87 U 0. 10 0 0. 87 U 0. 10 0 0.4 U 0. 10 0 16.4 U 0. 10 0 0. 8 U 0. 10 0 0. 8 U 0. 10 0
<br /> 1 , 2,3,6,7 , 8 -HxCDF 0. 38 U 0. 10 0 18 U 0. 10 0 0. 73 U 0. 10 0 0. 67 U 0. 10 0 0.3 U 0. 10 0 15 . 6 U 0. 10 0 0. 6 U 0. 10 0 0. 6 U 0. 10 0
<br /> 2,3,4, 6,7,8-HxCDF 0. 29 U 0. 10 0 8 . 9 U 0. 10 0 0. 65 U 0. 10 0 0.49 U 0. 10 0 0.3 U 0. 10 0 7. 7 U 0. 10 0 0.6 U 0. 10 0 0. 4 U 0. 10 0
<br /> 1 ,2,3, 7 ,8 ,9-HxCDF 0. 25 U 0. 10 0 5. 7 U 0. 10 0 0.49 U 0. 10 0 0.44 U 0. 10 0 0.2 U 0. 10 0 4 . 9 U 0. 10 0 0 .4 U 0. 10 0 0.4 U 0. 10 0
<br /> i1 ,2 ,3 ,4,6,7, 8-HpCDF 0. 15 U 0. 01 0 7 . 3 U 0.01 0 0. 92 U 0.01 0 0.66 U 0.01 0 0. 1 U 0.01 0 6.3 U 0.01 0 0.8 U 0.01 0 0. 6 U 0.01 0 1 ,2 , 3 ,4,7,8,9-HpCDF 0. 2 U 0.01 0 6 U 0. 01 0 0. 76 U 0.01 0 0.69 U 0.01 0 0.2 U 0.01 0 5 .2 U 0. 01 0 0.7 U 0.01 0 0. 6 U 0.01 0
<br /> OCDF 0.28 U 0.0001 0 IOU 0.0001 0 0.98 U 0. 0001 0 0. 85 U 0.0001 0 0.2 U 0.0001 0 8 . 7 U 0. 0001 0 0.9 U 0.0001 0 0. 7 U 0.0001 0
<br /> Total TCDD1TCDF
<br /> TE l' 41 0.00 0. 18 0.00099 0.00053 0. 00 0. 15 0.00086 0. 00046
<br /> Percent Moisture % 13 . 1 13 . 5 7 .9 1 . 5
<br /> l Notes :
<br /> 1 . Soil samples collected by Geomatrix Consultants, Inc. , and analyzed by Severn Trent Laboratories (STL San Francisco), Inc., of Pleasanton, California
<br /> ll for Dioxins and Furans using EPA Method EPA-5 1613B .
<br /> 2 . Toxicity equivalency factor (TEFs; unilless) from the World Health Organization (WHO) adopted from F. X. R. van Leeuwen, 1997 (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 /> i
<br /> Abbreviations:
<br /> EPA = U .S. Environmental Protection Agency
<br /> HpCDD = heptachlorodibenzo-p-dioxin
<br /> HxCDD = hexachlorodibenzo-p-dioxin
<br /> HpCDF = heptachlorodibenzofuran
<br /> HxCDF = hexachlorodibenzofuran
<br /> J = target analyte was positively identified ; the associated numerical value is the approximate concentration of analyte in the sample
<br /> Lab assigned J-Flags to signify "Estimated Result. Result is less than reporting limit".
<br /> OCDD = octachlorodibenzo-p-dioxin
<br /> OCDF = octachlorodibenzofuran
<br /> PeCDD = pentachlorodibenzo-p-dioxin
<br /> PeCDF = penlachlorodibenzofuran
<br /> TCDD = tetrachlorodibenzo-p-dioxin
<br /> TCDF = tetrachlorodibenzofuran
<br /> TEF = toxicity equivalency factor (unitless)
<br /> TEQ = toxicity equivalence
<br /> U = target analyte was not detected at or above the laboratory reporting limit shown.
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