### Description Nixon PRB PRB JanuaryPRB FebruaryPRB MarchPRB AprilPRB MayPRB JunePRB JulyPRB August

### PRB SeptemberPRB OctoberPRB NovemberPRB December

Sample Date 2009 2009 2009 2009200920092009 2009 2009 2009 2009 2009 

### Station NIXON NIXON NIXON NIXON NIXON NIXON NIXON NIXON NIXON NIXON NIXON NIXON 

### Proximate Analysis(As Received)



### H2O Moisture % 

### 28.84 27.79 26.81 28.2626.4329.7629.94 29.4 26.78 29.41 27.65 29.84



### Ash % 

### 4.74 4.92 4.61 4.61 5.3 5.22 4.59 5.39 4.88 5.61 6.17 4.4 

### Volatile % 

### 33.89 34.99 33.04 31.9632.5929.7930.52 30.71 32.71 31.39 32.97 33.83 

### C Fixed C % 

### 32.53 32.3 35.54 35.1735.6825.2334.95 34.5 35.63 33.59 33.21 31.93



### Total % 

### 100 100 100 100 100 90 100 100 100 100 100 100 

### S Sulfur 0.181 0.258 0.198 0.1790.1980.1770.199 0.199 0.22 0.211 0.237 0.172



### Pounds SO2 / MMBtu 0.43 0.6 0.45 0.42 0.45 0.42 0.48 0.48 0.51 0.5 0.55 0.4 

### Pounds Ash / MMBtu 5.57 5.74 5.22 5.4 6.04 6.27 5.5 6.42 5.59 6.66 7.18 5.14 

### Ash to Sulfur Ratio 26.19 19.07 23.2825.7526.7729.4923.07 27.09 22.18 26.59 26.03 25.58 Ultimate Analysis(As Received)



### H2O Moisture 28.84 27.79 26.81 28.2626.4329.7629.94 29.4 26.78 29.41 27.65 29.84 

### C Carbon 50 51.06 52.79 51.0955.0850.8548.95 50.55 50.88 50.89 51.26 50.45 

### H2 Hydrogen 3.41 3.52 3.41 3.35 3.25 3.27 2.77 3.22 2.94 3.24 2.72 3.29 

### N2 Nitrogen 0.69 0.7 1.06 0.71 0.63 0.62 0.52 0.61 0.58 0.74 0.74 0.73 

### S Sulfur 0.18 0.26 0.2 0.18 0.2 0.18 0.2 0.2 0.22 0.21 0.24 0.17



### Ash 4.74 4.92 4.61 4.61 5.3 5.22 4.59 5.39 4.88 5.61 6.17 4.4 

### O2 Oxygen 12.14 11.75 11.12 11.8 9.11 10.1 13.03 10.63 13.72 9.9 11.22 11.12 

### Cl Chlorine

Total 100.0 100.0 100.0 100.0100.0100.0100.0 100.0 100.0 100.0 100.0 100.0 

### Higher Heating Value Btu/lb

### 8,964 8,571 8,831 8,5398,7808,3248,345 8,388 8,718 8,416 8,589 8,560 

### Moisture&

### Ash Free(MAF) Btu/lb

### 12,806 12,737 12,87612,71912,8628,8218,780 8,907 9,203 12,951 13,084 13,018 

### Hardgrove Grindability Index 53 46 47 47 

### Moisture Level @ Hardness 2.50% 11.85% 17.68% 14.23% Mineral Analysis of Ash SiO2 Silicon dioxide % 

### 35.84 35.35 32.09 36.6032.8835.3835.66 30.87 35.32 36.37 39.55 32.98 Al2O3 Aluminum oxide % 

### 17.40 17.47 17.49 19.1916.1919.7017.77 15.44 16.52 17.40 17.61 17.35 TiO2 Titanium dioxide % 

### 1.30 1.29 1.18 4.30 1.28 1.29 1.34 1.15 1.27 1.30 1.21 1.29 Fe2O3 Iron oxide % 

### 5.86 5.72 6.09 5.58 5.75 5.29 5.92 4.96 5.96 5.94 5.24 5.76 CaO Calcium oxide % 

### 21.00 22.70 20.70 19.7022.8017.1019.40 17.85 21.60 20.20 18.10 22.10 MgO Magnesium oxide % 

### 5.17 5.26 5.41 5.19 5.42 5.07 5.26 4.64 5.39 5.17 4.66 5.73 K2O Potassium oxide % 

### 0.59 0.70 0.57 0.55 0.77 0.44 0.55 0.43 0.92 0.50 0.72 0.45 Na2O Sodium oxide % 

### 1.51 1.69 1.50 1.51 1.58 1.44 1.67 1.35 1.67 1.70 1.30 1.60 SO3 Sulfur Trioxide % 

### 5.31 4.96 7.86 8.24 8.61 11.108.92 9.22 9.98 9.24 8.82 P2O5 Phosphorus Pentoxide % 

### 1.27 1.43 1.47 1.47 1.18 1.21 1.04 1.05 1.38 1.15 0.94 1.36 Total % 

### 95.25 96.57 94.36102.3396.4698.0297.53 77.74 99.25 99.71 98.57 97.44 Ash Fusion Temperatures - Oxidizing

IT Initial deformation temp °F 

### 2158 2156 2159 2171211621652165 2143 2143 2215 2210 2157 ST Softening temp(H=W) °F 

### 2162 2165 2160 2188214621902190 2172 2160 2227 2215 2168 HT Hemispherical tempH=1/2 W °F 

### 2163 2172 2161 2197215021972197 2180 2166 2241 2225 2173 FT Fluid temp °F 

### 2164 2177 2162 2212215422102210 2187 2175 2260 2240 2184 Ash Fusion Temperatures - Reducing

IT Initial deformation temp °F 

### 2074 2144 2068 2096207021052105 2101 2060 2145 2127 2108 ST Softening temp(H=W) °F 

### 2080 2150 2076 2099208421342134 2106 2066 2156 2143 2111 HT Hemispherical tempH=1/2 W °F 

### 2089 2169 2083 2110209821602160 2115 2073 2171 2160 2112 FT Fluid temp °F 

### 2097 2185 2090 2115211021772177 2125 2087 2195 2166 2116 

### HHV

HGI

### Description Nixon Foidel Creek FC June



### Sample Date Jun-09 

### Station NIXON 

### Proximate Analysis(As Received)



### H2O Moisture % 

### 11.25 

### Ash % 

### 9.97 

### Volatile % 

### 34.46 

### C Fixed C % 

### 44.32 

### Total % 

### 100 

### S Sulfur 0.374 

### Pounds SO2 / MMBtu 0.68 

### Pounds Ash / MMBtu 9.07 

### Ash to Sulfur Ratio 26.66 Ultimate Analysis(As Received)



### H2O Moisture 11.25 

### C Carbon 66.4 

### H2 Hydrogen 4.61 

### N2 Nitrogen 1.64 

### S Sulfur 0.37 

### Ash 9.97 

### O2 Oxygen 5.76 

### Cl Chlorine Total 100.0 

### Higher Heating Value Btu/lb 

### 10,989 

### Moisture&

### Ash Free(MAF) Btu/lb 

### 12,323 Mineral Analysis of Ash SiO2 Silicon dioxide % 

### 57.46 Al2O3 Aluminum oxide % 

### 29.61 TiO2 Titanium dioxide % 

### 0.77 Fe2O3 Iron oxide % 

### 3.36 CaO Calcium oxide % 

### 2.93 MgO Magnesium oxide % 

### 1.03 K2O Potassium oxide % 

### 1.41 Na2O Sodium oxide % 

### 0.93 SO3 Sulfur Trioxide % 

### 1.79 P2O5 Phosphorus Pentoxide % 

### 1.17 Total % 

### 100.46 Ash Fusion Temperatures - Oxidizing IT Initial deformation temp °F 

### 2645 ST Softening temp(H=W) °F 

### 2666 HT Hemispherical tempH=1/2 W °F 

### 2694 FT Fluid temp °F 

### 2700 Ash Fusion Temperatures - Reducing IT Initial deformation temp °F 

### 2518 ST Softening temp(H=W) °F 

### 2609 HT Hemispherical tempH=1/2 W °F 

### 2647 FT Fluid temp °F 

### 2671 

### HHV

### Description Drake PRB PRB JanuaryPRB FebruaryPRB March PRB April PRB May PRB June PRB July PRB August

### PRB SeptemberPRB OctoberPRB NovemberPRB December Sample Date Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite 

### Station Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Proximate Analysis(As Received)



### H2O Moisture % 25.43 26.31 25.61 26.52 19.97 26.22 29.14 26.68 26.21 27.34 27.06 29.27 

### Ash % 5.25 5.33 5.1 4.64 7.4 5.91 5.23 5.54 5.1 5.92 4.95 5.14 

### Volatile % 34.94 33.83 32.38 31.78 32.79 31.17 30.8 32.22 34.15 32.84 32.07 35.8 

### C Fixed C % 34.38 34.53 36.91 37.06 39.84 36.7 34.83 35.56 34.54 33.9 35.92 29.79 

### Total % 100 100 100 100 100 100 100 100 100 100 100 100 

### S Sulfur 0.19 0.262 0.216 0.209 0.288 0.151 0.172 0.207 0.253 0.193 0.237 0.21 

### Pounds SO2 / MMBtu 0.43 0.6 0.49 0.48 0.59 0.34 0.41 0.46 0.57 0.44 0.54 0.5 

### Pounds Ash / MMBtu 5.93 6.07 5.75 5.29 7.63 6.68 6.23 6.12 5.79 6.79 5.64 6.11 

### Ash to Sulfur Ratio 27.63 20.34 23.61 22.20 25.69 39.14 30.41 26.76 20.16 30.67 20.89 24.48 Ultimate Analysis(As Received)



### H2O Moisture 25.43 26.31 25.61 26.52 19.97 26.22 29.14 26.68 26.21 27.34 27.06 29.27 

### C Carbon 52.19 52.38 54.16 52 60.84 53.75 49.45 53.87 51.28 51.56 52.83 50.42 

### H2 Hydrogen 3.54 3.78 3.41 3.26 3.79 3.48 2.91 3.44 3.01 3.2 2.63 3.28 

### N2 Nitrogen 0.77 0.72 0.82 0.67 1.04 0.73 0.55 0.73 0.66 0.8 0.76 0.69 

### S Sulfur 0.19 0.26 0.22 0.21 0.29 0.15 0.17 0.21 0.25 0.19 0.24 0.21 

### Ash 5.25 5.33 5.1 4.64 7.4 5.91 5.23 5.54 5.1 5.92 4.95 5.14 

### O2 Oxygen 12.63 11.22 10.68 12.7 6.67 9.76 12.55 9.53 13.49 10.99 11.53 10.99 

### Cl Chlorine Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 

### Higher Heating Value Btu/lb 8,858 8,776 8,873 8,771 9,700 8,850 8,397 9,049 8,814 8,716 8,767 8,406 

### Moisture&

### Ash Free(MAF) Btu/lb 12,863 12,838 12,887 12,741 13,356 9,454 8,900 9,626 9,329 13,060 12,894 12,816 

### Hardgrove Grindability Index 50 49 

### Moisture Level @ Hardness 3.08% 16.73% Mineral Analysis of Ash SiO2 Silicon dioxide % 36.01 35.35 35.67 37.84 46.14 38.70 38.19 30.02 37.07 34.21 34.81 39.12 Al2O3 Aluminum oxide % 18.14 17.47 17.44 19.60 20.85 19.69 17.07 15.07 16.76 17.28 16.26 18.60 TiO2 Titanium dioxide % 1.23 1.29 1.18 1.25 0.92 1.18 1.36 1.11 1.22 1.16 1.15 1.17 Fe2O3 Iron oxide % 5.35 5.70 6.10 5.49 4.64 5.17 5.18 5.11 5.56 5.76 5.99 5.08 CaO Calcium oxide % 20.00 22.70 18.90 18.40 11.00 14.00 18.90 17.70 20.30 19.50 22.70 18.60 MgO Magnesium oxide % 5.00 5.26 4.96 4.74 2.92 4.02 5.22 4.57 5.01 4.77 5.92 5.04 K2O Potassium oxide % 0.76 0.70 0.53 0.56 0.91 0.67 0.72 0.53 0.67 0.70 0.55 0.53 Na2O Sodium oxide % 1.60 1.69 1.36 1.19 1.26 1.25 1.72 1.31 1.67 1.71 1.66 1.78 SO3 Sulfur Trioxide % 4.72 4.96 8.04 8.82 7.73 10.17 8.70 8.95 9.98 11.19 8.57 P2O5 Phosphorus Pentoxide % 2.20 1.43 1.28 1.18 1.10 1.20 1.04 1.08 1.09 1.36 1.16 0.98 Total % 95.01 96.55 95.46 99.07 97.47 96.05 98.10 76.50 98.30 96.43 101.39 99.47 Ash Fusion Temperatures - Oxidizing IT Initial deformation temp °F 2138 2156 2184 2215 2273 2175 2182 2141 2167 2207 2174 2185 ST Softening temp(H=W) °F 2144 2165 2188 2221 2290 2186 2185 2161 2173 2213 2178 2200 HT Hemispherical tempH=1/2 W °F 2148 2172 2190 2228 2305 2197 2189 2177 2181 2225 2184 2230 FT Fluid temp °F 2152 2177 2193 2254 2371 2205 2192 2195 2200 2245 2197 2341 Ash Fusion Temperatures - Reducing IT Initial deformation temp °F 2070 2144 2085 2109 2217 2102 2100 2075 2080 2143 2108 2089 ST Softening temp(H=W) °F 2075 2150 2093 2111 2233 2109 2109 2080 2087 2150 2112 2105 HT Hemispherical tempH=1/2 W °F 2079 2169 2102 2114 2250 2113 2114 2092 2089 2170 2113 2119 FT Fluid temp °F 2085 2185 2120 2120 2070 2130 2120 2109 2099 2186 2116 2145 

### HHV

HGI

### Description Drake 20-Mile FC JanuaryFC FebruaryFC MarchFC AprilFC MayFC JuneFC JulyFC August

### FC SeptemberFC OctoberFC NovemberFC December

Sample Date CompositeCompositeCompositeCompositeCompositeCompositeCompositeComposite Composite Composite Composite Composite 

### Station Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Drake Proximate Analysis(As Received)



### H2O Moisture % 8.69 8.85 8.44 10.2110.469.46 9.82 8.82 9.33 11.21 10.85 9.97 

### Ash % 10.1 11.02 12.2811.1211.4710.2810.1211.66 10.2 10.75 10.08 9.99 

### Volatile % 37.77 36.73 36.0635.3634.7435.57 35.9 36.43 35.76 34.89 36.96 36.85 

### C Fixed C % 43.44 43.4 43.2243.3143.3344.6944.1643.09 44.71 43.15 42.11 43.19 

### Total % 100 100 100 100 100 100 100 100 100 100 100 100 

### S Sulfur 0.506 0.508 0.4580.6070.4480.3270.437 0.48 0.457 0.447 0.476 0.492 

### Pounds SO2 / MMBtu 0.88 0.91 0.83 1.1 0.82 0.58 0.78 0.86 0.81 0.81 0.86 0.88 

### Pounds Ash / MMBtu 8.82 9.87 11.11 10.1 10.54 9.1 9.03 10.38 9.04 9.8 9.11 8.91 

### Ash to Sulfur Ratio 19.96 21.69 26.8118.3225.6031.4423.1624.29 22.32 24.05 21.18 20.30 Ultimate Analysis(As Received)



### H2O Moisture 8.69 8.85 8.44 10.2110.469.46 9.82 8.82 9.33 11.21 10.85 9.97 

### C Carbon 64.97 65.92 64.6963.3266.5767.05 66 66.56 65.21 64.12 64.99 65.53 

### H2 Hydrogen 4.58 4.93 4.48 4.5 4.38 4.68 4.48 4.53 4.35 4.31 4.32 4.53 

### N2 Nitrogen 1.7 1.64 1.66 1.66 1.44 1.61 1.71 1.6 1.64 1.59 1.58 1.65 

### S Sulfur 0.51 0.51 0.46 0.61 0.45 0.33 0.44 0.48 0.46 0.45 0.48 0.49 

### Ash 10.1 11.02 12.2811.1211.4710.2810.1211.66 10.2 10.75 10.08 9.99 

### O2 Oxygen 9.45 7.13 7.99 8.58 5.23 6.59 7.43 6.35 8.81 7.57 7.7 7.87 

### Cl Chlorine Total 100.0 100.0 100.0100.0100.0100.0100.0100.0 100.0 100.0 100.0 100.0 

### Higher Heating Value Btu/lb 11,448 11,16411,04711,01710,87911,28811,20711,229 10,974 11,060 11,219 

### Moisture&

### Ash Free(MAF) Btu/lb 14,097 13,93314,12514,18713,93512,70412,59212,858 14,063 13,988 14,017 

### Hardgrove Grindability Index 48 45 

### Moisture Level @ Hardness 1.46% 3.75% Mineral Analysis of Ash SiO2 Silicon dioxide % 58.16 57.96 61.2858.6856.9459.0556.7959.24 54.73 56.58 60.35 53.68 Al2O3 Aluminum oxide % 25.84 26.02 23.8523.7324.8228.21 26.5525.29 25.85 26.26 25.30 26.70 TiO2 Titanium dioxide % 0.75 0.75 0.63 0.76 0.72 0.75 0.72 0.70 0.72 0.76 0.68 0.76 Fe2O3 Iron oxide % 3.35 3.22 2.93 3.95 3.33 3.34 3.07 3.08 3.03 3.06 3.08 3.03 CaO Calcium oxide % 3.84 3.91 2.82 3.54 3.49 2.75 3.31 3.35 3.72 4.04 3.76 5.46 MgO Magnesium oxide % 1.14 1.18 1.17 1.27 1.39 1.17 1.18 1.24 1.31 1.19 1.21 1.42 K2O Potassium oxide % 1.58 1.42 1.66 1.42 1.49 1.30 1.42 1.32 1.39 1.23 1.28 1.26 Na2O Sodium oxide % 0.98 1.03 0.97 1.04 1.04 1.00 0.98 1.04 1.10 1.06 1.04 0.98 SO3 Sulfur Trioxide % 1.23 0.54 1.87 2.22 2.10 2.25 2.71 2.57 2.98 3.30 3.08 3.77 P2O5 Phosphorus Pentoxide % 1.14 1.15 0.70 0.91 0.73 0.97 1.37 0.84 0.80 0.79 0.83 1.84 Total % 98.01 97.18 97.8897.5296.05100.7998.1098.67 95.63 98.27 100.61 98.90 Ash Fusion Temperatures - Oxidizing IT Initial deformation temp °F 2656 2650 2644 262325652620 2638 2610 2656 2464 2652 2447 ST Softening temp(H=W) °F 2684 2661 2667 266826772644 2661 2625 2700 2570 2690 2475 HT Hemispherical tempH=1/2 W °F 2698 2670 2690 270026842655 2696 2634 2700 2610 2700 2485 FT Fluid temp °F 2700 2681 2700 270026002675 2700 2670 2700 2633 2700 2530 Ash Fusion Temperatures - Reducing IT Initial deformation temp °F 2545 2576 2540 254525002479 2600 2572 2570 2448 2650 2400 ST Softening temp(H=W) °F 2592 2585 2590 260525432518 2627 2584 2593 2525 2659 2417 HT Hemispherical tempH=1/2 W °F 2631 2600 2635 263025592576 2640 2620 2610 2560 2671 2455 FT Fluid temp °F 2671 2625 2677 267025802610 2650 2657 2670 2590 2689 2475 

### HHV

HGIAs Rec'd Dry Air Dry As Rec'd Dry Air Dry As Rec'd Dry Air Dry As Rec'd Dry Air Dry As Rec'd Dry Air Dry As Rec'd Dry Air Dry Proximate Moisture 26.45 0.00 6.32 27.47 0.00 8.97 27.75 0.00 7.95 31.88 0.00 15.10 8.01 0.00 12.32 28.99 0.00 11.51 Ash 4.55 6.18 5.79 4.25 5.87 5.34 4.14 5.74 5.28 5.00 7.34 6.23 6.40 8.88 7.79 5.22 7.35 6.50 Sulfur 0.22 0.30 0.28 0.24 0.33 0.30 0.20 0.28 0.26 0.19 0.27 0.23 0.18 0.24 0.21 0.19 0.26 0.23 Air Dry Loss 21.49 20.32 21.51 19.77 17.90 19.75 Ultimate Moisture 26.45 0.00 6.32 27.47 0.00 8.97 27.75 0.00 7.95 31.88 0.00 15.10 28.01 0.00 12.32 28.99 0.00 11.51

Carbon 52.55 71.45 66.93 52.02 71.71 65.28 52.13 72.16 66.42 49.17 72.19 61.29 50.67 70.39 61.72 50.10 70.55 62.43 Hydrogen 3.41 4.64 4.34 3.34 4.60 4.19 3.37 4.66 4.29 3.18 4.66 3.96 3.13 4.35 3.81 3.13 4.41 3.90 Nitrogen 0.74 1.00 0.94 0.74 1.02 0.93 0.71 0.98 0.90 0.61 0.90 0.76 0.56 0.78 0.68 0.39 0.54 0.48 Sulfur 0.22 0.29 0.28 0.24 0.33 0.30 0.20 0.28 0.25 0.18 0.27 0.23 0.18 0.24 0.21 0.19 0.26 0.23 Ash 4.55 6.18 5.79 4.25 5.87 5.34 4.14 5.74 5.28 5.00 7.34 6.23 6.40 8.88 7.79 5.22 7.35 6.50 Oxygen 12.08 16.44 15.40 11.94 16.47 14.99 11.70 16.18 14.91 9.98 14.64 12.43 11.05 15.36 13.47 11.98 16.89 14.95

NIXPERF 020109 NIXPERF 020509NIXPERF 021009NIXPERF 021409NIXPERF 022109NIXPERF 022509NIXPERF 022809NIXPERF 030409 Air Dry Loss 24.87 24.82 25.57 23.88 25.12 23.85 24.62 23.82 Residual Moisture 4.46 4.57 3.77 5.63 4.19 4.71 3.79 9.41 As Rec'd Moisture 28.22 28.26 28.38 28.17 28.26 27.44 27.48 30.99 Metals Mercury (air dry) mg/kg 0.06 0.09 0.06 0.06 0.06 0.07 0.08 0.08

Mercury (as rec)mg/kg 0.05 0.07 0.04 0.05 0.04 0.05 0.06 0.06 Mercury (Dry) mg/kg 0.06 0.90 0.06 0.06 0.06 0.07 0.08 0.09 Halogens Chlorine (air dry) % <0.005 <0.005 <0.005 <0.005 0.009 0.006 0.008 0.008

Chlorine (as rec) % <0.004 <0.004 <0.004 <0.004 0.007 0.005 0.006 0.006 Chlorine (Dry) % <0.005 <0.005 <0.005 <.005 0.009 0.006 0.008 0.009 Fluorine (air dry) % 0.01 0.01 0.01 0.00 0.005 0.005 0.006 0.005 Fluorine (as rec) % 0.00 0.00 0.00 0.00 0.004 0.004 0.005 0.004 Fluorine (Dry) % 0.01 0.01 0.01 0.00 0.005 0.005 0.006 0.006 Chlorine (air dry)mg/kg <50 <50 <50 <50 90 60 80 80 Chlorine (as rec) mg/kg <40 <40 <40 <40 70 50 60 60 Chlorine (Dry) mg/kg <50 <50 <50 <50 90 60 80 90 Fluorine (air dry) mg/kg 50 50 50 40 50 50 60 50 Fluorine (as rec) mg/kg 40 40 40 30 40 40 50 40 Fluorine (Dry) mg/kg 50 50 50 40 50 50 60 60

Nixon RATA Test 1100 1500 1000 1400 Mercury (Air Dry) mg/kg 0.06 0.06 0.06 0.06 Mercury (As Received) mg/kg 0.05 0.05 0.05 0.05 Mercury (Dry) Mg/kg 0.07 0.07 0.07 0.07 Chlorine (Air Dry) % <0.0005 0.006 0.007 0.008 Chlorine (As Received) % <0.0004 0.005 0.006 0.006 Chlorine (Dry Basis) % <0.0005 0.006 0.007 0.008 Fluorine (Air Dry) % 0.005 0.005 0.005 0.005 Fluorine (As Received) % 0.004 0.004 0.004 0.004 Fluorine (Dry Basis) % 0.006 0.006 0.006 0.005 Air Dry Loss % 18.44 18.43 19.84 22.62 Residual Moisture % 11.56 12.49 10.36 7.89 As Received % Moisture 27.87 28.62 28.14 28.73

Train # Date SGS Gilette Nixon Perf Date Hg mg/kg Nixon CNANX007 02/01/2009 0.06 02/19/2009 0.07 CNANX008 02/05/2009 0.07 02/20/2009 0.06 CNANX009 02/10/2009 0.07 02/21/2009 0.07 CNANX010 02/14/2009 0.08 02/22/2009 0.07 CNANX011 02/22/2009 0.07 02/23/2009 0.06 CNANX012 02/25/2009 02/24/2009 0.06 CNANX013 02/28/2009 02/25/2009 0.06 CNANX014 03/04/2009 0.06 CNANX015 03/08/2009 0.11 CNANX017 03/21/2009 0.08 CNANX018 03/30/2009 0.06 CNANX019 04/03/2009 0.06 CNANX022 04/30/2009 0.07 CNANX029 06/01/2009 0.06 CNANX035 07/16/2009 0.07 CNANX039 08/01/2009 0.06 CNANX046 09/03/2009 0.07 CNANX052 10/01/2009 0.05 CNANX058 11/02/2009 0.07 CNANX061 12/02/2009 0.08

Train # Date SGS Gilette Drake CNADK004 02/09/2009 

### 0.07 CNADK005 02/23/2009 

### 0.07 CNADK006 03/08/2009 

### 0.06 CNADK007 03/12/2009 

### 0.07 CNADK008 03/31/2009 

### 0.07 CNADK009 04/03/2009 

### 0.12 CNADK010 04/13/2009 

### 0.07 Hazen Research 4601 Indiana St Golden, CO 80403 SGS North America 2804 Hackathorne Lane Gillette, Wy 82716

Mercury Testing

SGS North America 2804 Hackathorne Lane Gillette, Wy 82716 08/27/09 ABCDEFG 0800 Perf Test

Hazen Research 4601 Indiana Street Golden, CO 80403

1-Jun-09 2-Jun-09 Hazen Research 4601 Indiana Street Golden, CO 80403

Mercury Testing Hazen Research 4601 Indiana Street Golden, CO 80403 03/04/09 215.8 MW ABCDEFG 0430 Perf Test 03/05/09 ABCDEFG 223 MW 0730 Perf Test 03/05/09 ABCDEFG 0919 Perf Test 08/27/09 ABCDEFG 0540 Perf Test 08/27/09 ABCDEFG 0546 Perf Test

### 2009 Metals Analysis

PRB NixonPRB Drake20 Mile DrakeWest Elk Drake
Metals in Ash

Antimony, mg/kg 

### <10 <10 <10 <10 Barium, mg/kg 

### 5870 4750 2920 2440 Beryllium, mg/kg 

### 7 <7 <7 8 Cadmium, mg/kg 

### 2 1 2 1 Chromium, mg/kg 

### 120 420 110 160 Cobalt, mg/kg 

### 52 53 31 46 Copper, mg/kg 

### 150 140 60 77 Lead, mg/kg 

### 43 77 81 64 Manganese, mg/kg 

### 140 150 70 110 Molybdenum, mg/kg 

### 44 15.9 4.3 33.8 Nickel, mg/kg 

### 60 204 66 95 Silver, mg/kg 

### 48 <2 <2 <2 Thallium, mg/kg 

### 28 <20 <20 <20 Vanadium, mg/kg 

### 186 136 91 111 Zinc, mg/kg 

### 140 120 90 96

Metals (Dry Whole Coal)

Antimony, mg/kg 

### <0.7 <0.8 <1 <1 Barium, mg/kg 

### 436 362 343 280 Beryllium, mg/kg 

### 0.5 <0.5 <0.8 0.9 Cadmium, mg/kg 

### 0.1 0.08 0.23 0.1 Chromium, mg/kg 

### 8.9 32 13 18 Cobalt, mg/kg 

### 3.9 4 3.6 5.3 Copper, mg/kg 

### 11 11 7 8.8 Lead, mg/kg 

### 3.2 5.9 9.5 7.4 Manganese, mg/kg 

### 10 11 8.2 13 Molybdenum, mg/kg 

### 3.27 1.21 0.5 3.88 Nickel, mg/kg 

### 4.5 16 7.7 11 Silver, mg/kg 

### 3.6 <0.2 <0.2 <0.2 Thallium, mg/kg 

### 2.1 <2 <2 <2 Vanadium, mg/kg 

### 13.8 10.4 11 12.7 Zinc, mg/kg 

### 10.4 9.1 11 11

Air Dry Loss, % 

### 16.1 15.48 4.88 9.37 Residual Moisture, % 

### 12.72 9.08 2.87 2.37 As Received Moisture, % 

### 26.77 23.15 7.61 11.54

Metals

Arsenic (Air Dry Basis), mg/kg 

### 0.39 0.25 0.2 0.7 Arsenic (As Received Basis), mg/kg 

### 0.33 0.21 0.19 0.63 Arsenic ( Dry Basis), mg/kg 

### 0.45 0.27 0.21 0.72

Mercury (Air Dry Basis), mg/kg 

### 0.05 0.07 0.05 0.11 Mercury (As Received Basis), mg/kg 

### 0.04 0.06 0.05 0.1 Mercury ( Dry Basis), mg/kg 

### 0.06 0.08 0.05 0.11

Selenium (Air Dry Basis), mg/kg 

### <0.05 <0.05 <0.05 <0.05 Selenium (As Received Basis), mg/kg 

### <0.04 <0.04 <0.05 <0.05 Selenium ( Dry Basis), mg/kg 

### <0.06 <0.05 <0.05 <0.05

Halogens

Chlorine (Air Dry Basis), % 

### <0.005<0.005 <0.05 0.007 Chlorine (As Received Basis), % 

### <0.004<0.004 <0.05 0.006 Chlorine ( Dry Basis), % 

### <0.006<0.005 <0.05 0.007

Fluorine (Air Dry Basis), % 

### 0.005 0.006 0.013 0.008 Fluorine (As Received Basis), % 

### 0.0040.005 0.012 0.007 Fluorine ( Dry Basis), % 

### 0.006 0.007 0.013 0.00812/10/2009 12/14/2009 12/18/2009 12/27/2009

H2OMoisture % 

### 11.22 11.96 12.47 10.77 Ash % 

### 4.89 4.96 5.46 4.48 Volatile % 

### 37.61 38.1 36.08 37.52 CFixed C % 

### 46.28 44.98 45.99 47.23 Total % 

### 100 100 100 100 SSulfur 

### 0.49 0.421 0.469 0.446 Pounds SO2 / MMBtu 

### 0.83 0.71 0.81 0.75 Pounds Ash / MMBtu 

### 4.14 4.18 4.74 3.76 Ash to Sulfur Ratio 

### 9.98 11.78 11.64 10.04

H2OMoisture 

### 11.22 11.96 12.47 10.77 CCarbon 

### 69.22 69.27 67.42 70.2 H2Hydrogen 

### 4.63 4.6 4.45 4.62 N2Nitrogen 

### 1.37 1.42 1.36 1.37 SSulfur 

### 0.49 0.42 0.47 0.45 Ash 

### 4.89 4.96 5.46 4.48 O2Oxygen 

### 8.18 7.7 8.37 8.11 Total 

### 100 100 100 100 Higher Heating Value Btu/lb 

### 11,809 11,877 11,515 11,923 Moisture&Ash Free(MAF) Btu/lb 

### 14,078 14,295 14,030 14,069 Hardgrove Grindability Index 

### 53 52 54 54 Moisture Level @ Hardness 

### 2.86 3.17 3.41 5.25

SiO2Silicon dioxide % 

### 42.67 48.08 51.1 47.17 Al2O3Aluminum oxide % 

### 22.5 29.63 27.66 28.9 TiO2Titanium dioxide % 

### 0.88 0.89 0.9 0.95 Fe2O3Iron oxide % 

### 12.22 8.00 8.14 9.96 CaOCalcium oxide % 

### 5.06 4.43 3.99 3.9 MgOMagnesium oxide % 

### 1.57 1.31 1.37 1.42 K2OPotassium oxide % 

### 1.04 0.78 1.15 0.8 Na2OSodium oxide % 

### 1.4 1.5 1.39 1.42 SO3Sulfur Trioxide % 

### 5.42 3.18 2.78 3.5 P2O5Phosphorus Pentoxide % 

### 0.66 0.86 0.56 0.58 Total % 

### 93.42 98.66 99.04 98.6

ITInitial deformation temp °F 

### 2330 2360 2500 2405 STSoftening temp(H=W) °F 

### 2403 2601 2560 2441 HTHemispherical tempH=1/2 W °F 

### 2428 2607 2567 2458 FTFluid temp °F 

### 2448 2615 2600 2490

ITInitial deformation temp °F 

### 2141 2292 2370 2425 STSoftening temp(H=W) °F 

### 2170 2383 2429 2450 HTHemispherical tempH=1/2 W °F 

### 2230 2443 2470 2480 FTFluid temp °F 

### 2265 2479 2493 2500

Base Content % 

### 24.38 16.93 16.76 18.51 Acid Content % 

### 75.62 83.07 83.24 81.49 Dolomite Ratio 

### 31.14 35.83 33.42 30.4 Base /Acid Ratio 

### 0.32 0.20 0.20 0.23 Silica/Alumina Ratio 

### 1.9 1.62 1.85 1.63 T (CV) Deg F 

### 2430 2643 2670 ND Equiv Silica Content % 

### 2508 2701 2712 2658 135.43 77.77 79.1 75.53 Ash Type 

### High Rank High Rank High Rank High Rank Slagging Type 

### Low Low Low Low Foulding Type 

### Medium Medium Medium Medium

As Reveived Mercury 

### Mg/Kg 0.009 ND ND 0.03 Dry Basis Mercury 

### Mg/Kg 0.01 ND ND 0.03 Ash Fusion Temperatures - Oxidizing

Ash Fusion Temperatures - Reducing

Ash Viscosity Calculation

Viscosity fro Equiv Silica at 2600 F (Poise)

Other 

### Drake West Elk 2009 Proximate Analysis(As Received) - Hazen Analysis

Ultimate Analysis(As Received)

HHV

HGI Mineral Analysis of Ash