100% Ash Leachates

Plant Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Ash Type Fly Ash Fly Ash Fly Ash Fly Ash Fly Ash Fly Ash Fly Ash Fly Ash Bottom Ash Bottom Ash Paper A A A B B B C D B C Test 18-hour 30-day 60-day 18-hour 30-day 60-day 18-hour 18-hour 18-hour 18-hour Al ug/L 2500 4000 4900 1000 6100 4270 8350 2100 Sb ug/L < 10 As ug/L 14 < 10 < 10 97 < 4 < 4 15 21.3 8.4 6.8 Ba ug/L 900 11000 16000 910 10600 12400 945 657 330 276 Be ug/L < 10 B ug/L 9000 4600 4600 12300 8360 4590 10600 11600 2730 1840 Cd ug/L < 5 < 5 < 5 < 1 < 1 < 0.3 < 10 < 1 < 0.3 Ca mg/L 350 338 335 Cr ug/L 150 21 13 250 < 50 < 50 178 159 < 50 9.9 Cu ug/L < 10 < 10 < 10 < 50 < 50 < 10 < 50 Fe mg/L < 0.02 < 0.2 < 0.2 < 0.1 < 0.01 Pb ug/L < 5 < 5 < 5 < 2 < 2 < 2 < 10 < 2 < 2 Mg mg/L < 0.5 < 0.5 < 0.5 < 0.1 < 1 Mn mg/L < 0.1 < 0.1 < 0.01 < 0.1 Hg ug/L < 2 < 2 < 2 < 0.1 < 0.4 < 0.3 < 0.01 < 0.1 < 0.01Ni ug/L < 100 < 100 < 100 < 50 < 50 < 10 < 50 K mg/L 2.35 4.2 Se ug/L 140 7 6 71.8 10 5.7 110 162 < 2 < 2 Si mg/L 3.8 1.8 < 0.5 6.25 Ag ug/L < 1 < 1 < 1 < 0.8 < 0.8 < 10 < 0.8 Na mg/L 4.09 26.9 SO4 mg/L 280 12 13 6.9 1.69Tl ug/L < 10 Zn ug/L < 50 < 50 < 50 < 50 < 50 < 10 < 50 pH 12.2 12.3 12.4 12.12 12.27 12.21 12.07 11.19 Paper A: The Characterization of Coal Creek Station Fly Ash for Utilization PotentialPaper B: Survey and Demonstration of Utilization Potential of North Dakota Lignite Ash SourcesPaper C: Use of Bottom Ash and Fly Ash in Rammed Earth ConstructionPaper D: Unpublished 1999 Data
Bulk Oxide Composition

Plant Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coyote SAsh Type Fly Ash Fly Ash Fly Ash Fly Ash Bottom Ash Bottom Ash Slag FPaper A B C D B C B SiO2 % 46.00 47.06 46.66 46.45 48.77 47.39 31.44 

Al2O3 % 14.50 13.61 15.56 15.21 11.98 14.61 13.76 Fe2O3 % 6.73 6.02 7.85 7.80 7.08 9.49 12.11 TiO2 % 0.58 0.55 0.56 0.62 0.51 0.53 0.69 CaO % 17.90 16.38 17.03 16.65 15.54 17.31 20.58 MgO % 5.08 4.86 5.01 5.21 4.47 5.46 6.64 K2O % 1.86 1.90 1.90 1.91 1.49 1.40 0.44 

Na2O % 1.16 0.57 3.07 2.98 0.60 1.37 4.24 

SO3 % 1.36 0.98 1.03 1.91 0.35 0.49 0.65 

P2O5 % 0.17 0.05 0.28 0.27 0.04 0.22 0.13 SrO % 0.30 0.25 0.33 0.32 0.24 0.31 0.74 BaO % 0.77 0.57 0.56 0.56 0.42 0.50 0.91 MnO2 % 0.10 0.12 0.10 0.10 0.11 0.12 0.10 LOI % 0.02 0.04 0.02 0.39 0.01 Total % 96.53 92.96 99.94 100.01 91.99 99.20 92.44 Moisture, as Received % 0.01 0.10 0.03 21.40 1.90 Paper A: The Characterization of Coal Creek Station Fly Ash for Utilization PotentialPaper B: Survey and Demonstration of Utilization Potential of North Dakota Lignite Ash SourcesPaper C: Use of Bottom Ash and Fly Ash in Rammed Earth ConstructionPaper D: Unpublished 1999 Data
Trace Element Composition

Plant Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coal Creek Coyote SPaper A B C D B C B Ash Type Fly Ash Fly Ash Fly Ash Fly Ash Bottom Ash Bottom Ash Slag FSb μg/gAs μg/g 98 74 132 17.6 40 9.42

Be μg/g

B μg/g 1070 825 1320 687 901 956

Cd μg/g < 1 0.92 0.7 0.52 0.2 0.73

Cr μg/g 65 31 59 8.7 45 20

Cu μg/g 72 51 48 35Pb μg/g 39 31.9 31.8 7.91 8.7 5.06Hg μg/g 0.99 0.019 0.3 0.002 0.034 0.9 0.048 

Ni μg/g 31 29 27 19

Se μg/g 8 5.5 9.9 < 1 < 0.4 < 1

Ag μg/g < 0.2 0.34 0.11 < 0.08

Tl μg/g

Zn μg/g 66 55.7 40.7 8.3

Paper A: The Characterization of Coal Creek Station Fly Ash for Utilization PotentialPaper B: Survey and Demonstration of Utilization Potential of North Dakota Lignite Ash SourcesPaper C: Use of Bottom Ash and Fly Ash in Rammed Earth ConstructionPaper D: Unpublished 1999 Data