2008 Hazardous Air Pollutants Emissions Emissions County CAS # (tons/year) (lbs/year) Beaver 11440 Circle Four Farms: Swine Feed Mill 7439921 Lead 0.000 0.03 Box Elder 10009 ATK Launch Systems - Promontory 100414 Ethyl Benzene 1.043 2,086.00 107211 Ethylene Glycol 1.344 2,688.00 50000 Formaldehyde 0.385 770.00 110543 Hexane 0.164 327.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 762.120 1,524,239.00 7439921 Lead 0.000 0.40 67561 Methanol 0.419 839.00 71556 Methyl Chloroform (1,1,1-Trichloroethane) 13.718 27,436.00 108101 Methyl Isobutyl Ketone (Hexone) 0.283 566.00 75092 Methylene Chloride (Dichloromethane) 1.825 3,650.00 101688 Methylene Diphenyl Diisocyanate (MDI) 0.107 214.00 108952 Phenol 3.071 6,143.00 108883 Toluene 1.285 2,570.00 79016 Trichloroethylene 0.543 1,087.00 1330207 Xylenes (Isomers And Mixture) 4.324 8,648.00 13096 Consolidated Paving & Concrete Inc.: Hot Mix Asphalt Plant 7440360 Antimony (TSP) 0.002 3.89 7440382 Arsenic (TSP) 0.373 746.05 7440439 Cadmium 0.006 12.55 CMJ500 Chromium Compounds 0.036 71.85 7440484 Cobalt (TSP) 0.022 44.76 7439921 Lead 0.254 507.93 7439965 Manganese (TSP) 0.970 1,940.00 22967926 Mercury (Organic) 0.000 0.11 7440020 Nickel 0.971 1,942.31 7723140 Phosphorus 1.791 3,582.11 253 Selenium & Compounds 1.790 3,580.96 10021 Geneva Rock Products: Perry Sand & Gravel Pit 106990 1,3-Butadiene 0.000 0.04 83329 Acenaphthene(TSP) 0.000 0.00 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.72 107028 Acrolein 0.000 0.09 120127 Anthracene 0.000 0.00 71432 Benzene (Including Benzene From Gasoline) 0.000 0.88 56553 Benzo(A)Anthracene 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.01 50000 Formaldehyde 0.001 1.11

4/20/2010 Page 1 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Box Elder 10021 Geneva Rock Products: Perry Sand & Gravel Pit 91203 Naphthalene 0.000 0.08 85018 Phenanthrene 0.000 0.03 246 Polycyclic Organic Matter 0.000 0.19 129000 Pyrene 0.000 0.00 108883 Toluene 0.000 0.38 1330207 Xylenes (Isomers And Mixture) 0.000 0.27 11284 Hill Air Force Base: Utah Test and Training Range 79345 1,1,2,2-Tetrachloroethane 0.000 0.53 106990 1,3-Butadiene 0.000 0.12 540841 2,2,4-Trimethylpentane 0.016 32.48 75070 Acetaldehyde 0.006 12.27 75058 Acetonitrile 0.006 12.35 107028 Acrolein 0.001 2.76 107131 Acrylonitrile 0.000 0.95 7440382 Arsenic (TSP) 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.027 54.16 56553 Benzo(A)Anthracene 0.000 0.00 50328 Benzo(A)Pyrene 0.000 0.00 7440439 Cadmium 0.000 0.04 CMJ500 Chromium Compounds 0.000 0.05 218019 Chrysene (TSP) 0.000 0.00 7440484 Cobalt (TSP) 0.000 0.01 98828 Cumene 0.000 0.95 57125 Cyanide 0.005 9.88 53703 Dibenzo(A,H)Anthracn 0.000 0.00 124174 Diethylene Glycol Monobutylether A 0.042 84.79 111900 Diethylene Glycol Monoethyl Ether 0.000 0.24 100414 Ethyl Benzene 0.002 4.73 75003 Ethyl Chloride (Chloroethane) 0.000 0.24 107211 Ethylene Glycol 0.028 55.34 75218 Ethylene Oxide 0.001 2.86 75343 Ethylidene Dichloride (1,1-Dichloroethane) 0.000 0.68 206440 Fluoranthene (TSP) 0.000 0.02 50000 Formaldehyde 0.014 28.48 110543 Hexane 0.048 96.49 302012 Hydrazine 0.001 2.08 74908 Hydrogen Cyanide (Hydrocyanic Acid) 0.407 814.98 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.007 14.82 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.00 7439921 Lead 0.064 128.00 MAR500 Manganese Compounds 0.000 0.01 EDF033 Mercury Compounds 0.000 0.01 67561 Methanol 0.001 1.65

4/20/2010 Page 2 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Box Elder 11284 Hill Air Force Base: Utah Test and Training Range 108101 Methyl Isobutyl Ketone (Hexone) 0.001 2.05 1634044 Methyl Tert Butyl Ether 0.103 206.21 75092 Methylene Chloride (Dichloromethane) 0.002 3.39 91203 Naphthalene 0.000 0.67 7440020 Nickel 0.000 0.08 127184 Tetrachloroethylene (Perchloroethylene) 0.002 3.76 108883 Toluene 0.036 71.97 79016 Trichloroethylene 0.001 1.38 75014 Vinyl Chloride 0.001 1.30 1330207 Xylenes (Isomers And Mixture) 0.024 47.39 10012 La-Z-Boy Utah: Furniture Manufacturing Plant CAE750 Cadmium Compounds 0.000 0.02 CMJ500 Chromium Compounds 0.000 0.20 LCT000 Lead Compounds 0.000 0.01 MAR500 Manganese Compounds 0.000 0.01 108883 Toluene 0.000 0.05 10008 Nucor Steel: Nucor Steel 7440360 Antimony (TSP) 2.496 4,992.00 7440382 Arsenic (TSP) 0.240 479.22 7440417 Beryllium (TSP) 0.027 54.92 7440439 Cadmium 0.084 167.12 7782505 Chlorine 0.092 183.60 CMJ500 Chromium Compounds 0.286 572.80 7440484 Cobalt (TSP) 0.043 86.34 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.006 12.00 7439921 Lead 0.332 664.00 7439965 Manganese (TSP) 1.160 2,320.60 22967926 Mercury (Organic) 0.074 147.82 7440020 Nickel 0.241 482.18 246 Polycyclic Organic Matter 0.000 0.14 253 Selenium & Compounds 0.082 164.60 10028 Vulcraft - Division of Nucor Corporation: Steel Products Manufacturing 7440439 Cadmium 0.000 0.00 CMJ500 Chromium Compounds 0.000 0.73 7440484 Cobalt (TSP) 0.000 0.73 7439921 Lead 0.001 2.10 7439965 Manganese (TSP) 0.116 232.04 Cache 12902 City of Logan: Logan City Landfill 107131 Acrylonitrile 0.160 320.00 71432 Benzene (Including Benzene From Gasoline) 0.410 820.00 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.014 28.00

4/20/2010 Page 3 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Cache 12902 City of Logan: Logan City Landfill 75092 Methylene Chloride (Dichloromethane) 0.567 1,134.00 108883 Toluene 7.474 14,948.00 75014 Vinyl Chloride 0.218 436.00 1330207 Xylenes (Isomers And Mixture) 0.608 1,216.00 11412 Geneva Rock Products: Cove Pit 83329 Acenaphthene(TSP) 0.000 0.01 208968 Acenaphthylene(TSP) 0.000 0.01 75070 Acetaldehyde 0.000 0.03 107028 Acrolein 0.000 0.01 120127 Anthracene 0.000 0.00 71432 Benzene (Including Benzene From Gasoline) 0.000 0.90 205992 Benzo (B) Fluoranthene 0.000 0.00 218019 Chrysene (TSP) 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.00 50000 Formaldehyde 0.000 0.09 91203 Naphthalene 0.000 0.15 85018 Phenanthrene 0.000 0.05 246 Polycyclic Organic Matter 0.000 0.26 129000 Pyrene 0.000 0.00 108883 Toluene 0.000 0.33 1330207 Xylenes (Isomers And Mixture) 0.000 0.22 12246 Geneva Rock Products: Logan Wash Plant & Concrete Batch Plant 106990 1,3-Butadiene 0.000 0.03 83329 Acenaphthene(TSP) 0.000 0.00 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.58 107028 Acrolein 0.000 0.07 120127 Anthracene 0.000 0.00 71432 Benzene (Including Benzene From Gasoline) 0.000 0.71 56553 Benzo(A)Anthracene 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.01 50000 Formaldehyde 0.000 0.89 91203 Naphthalene 0.000 0.06 85018 Phenanthrene 0.000 0.02 246 Polycyclic Organic Matter 0.000 0.13 129000 Pyrene 0.000 0.00 108883 Toluene 0.000 0.31 1330207 Xylenes (Isomers And Mixture) 0.000 0.22 11841 Pepperidge Farm Incorporated: Commercial Bakery 7439921 Lead 0.000 0.05 10047 Utah State University: Main Campus: Heating Plant - Primary Source 100414 Ethyl Benzene 0.020 40.00 107211 Ethylene Glycol 0.930 1,860.00

4/20/2010 Page 4 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Cache 10047 Utah State University: Main Campus: Heating Plant - Primary Source 108883 Toluene 0.020 40.00 1330207 Xylenes (Isomers And Mixture) 0.090 180.00 Carbon 12948 Bill Barret Corporation: Dry Canyon Compressor Station 106990 1,3-Butadiene 0.303 605.60 75070 Acetaldehyde 1.274 2,548.60 107028 Acrolein 1.201 2,402.00 71432 Benzene (Including Benzene From Gasoline) 1.004 2,007.00 100414 Ethyl Benzene 0.016 32.20 50000 Formaldehyde 1.297 2,593.60 110543 Hexane 0.172 343.60 7439921 Lead 0.000 0.03 67561 Methanol 1.397 2,794.80 234 PAH, Total 0.134 268.00 108883 Toluene 0.441 881.20 1330207 Xylenes (Isomers And Mixture) 0.131 262.00 13284 Bill Barret Corporation: Interplanetary Compressor Station 71432 Benzene (Including Benzene From Gasoline) 0.248 495.40 100414 Ethyl Benzene 0.001 2.40 50000 Formaldehyde 0.907 1,815.00 110543 Hexane 0.067 134.80 108883 Toluene 0.129 258.60 1330207 Xylenes (Isomers And Mixture) 0.048 95.60 11634 Canyon Fuel Company LLC: Dug-Out Canyon Coal Mine 50000 Formaldehyde 0.550 1,100.00 10107 ECDC Environmental LC: East Carbon Landfill 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.012 24.48 56235 Carbon Tetrachloride 0.000 0.90 108907 Chlorobenzene 0.011 21.25 67663 Chloroform 0.001 2.09 25321226 Dichlorobenzene 0.098 196.44 77781 Dimethyl Sulfate 0.176 351.79 100414 Ethyl Benzene 0.300 599.33 75003 Ethyl Chloride (Chloroethane) 0.006 12.82 106934 Ethylene Dibromide (Dibromoethane) 0.004 7.19 110543 Hexane 0.083 166.55 22967926 Mercury (Organic) 0.000 0.05 74873 Methyl Chloride (Chloromethane) 0.005 10.46 108101 Methyl Isobutyl Ketone (Hexone) 0.031 62.47 75092 Methylene Chloride (Dichloromethane) 0.120 239.80 127184 Tetrachloroethylene (Perchloroethylene) 0.082 164.51 108883 Toluene 2.408 4,815.90

4/20/2010 Page 5 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Carbon 10107 ECDC Environmental LC: East Carbon Landfill 79016 Trichloroethylene 0.037 74.41 75014 Vinyl Chloride 0.280 559.75 1330207 Xylenes (Isomers And Mixture) 0.732 1,463.84 10081 PacifiCorp: Carbon Power Plant 107028 Acrolein 0.012 24.65 107051 Allyl Chloride 0.059 117.98 ARF750 Arsenic Compounds 0.010 20.51 71432 Benzene (Including Benzene From Gasoline) 0.025 50.65 7440417 Beryllium (TSP) 0.000 0.47 BFQ500 Beryllium Compounds 0.001 2.01 CAE750 Cadmium Compounds 0.008 15.39 CMJ500 Chromium Compounds 0.063 126.76 CNB850 Cobalt Compounds 0.008 16.77 57125 Cyanide 0.730 1,459.65 132649 Dibenzofurans 0.004 7.52 77781 Dimethyl Sulfate 0.014 28.03 106934 Ethylene Dibromide (Dibromoethane) 0.017 34.41 50000 Formaldehyde 0.017 33.82 7647010 Hydrochloric Acid (Hydrogen Chloride) 293.434 586,868.17 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 51.868 103,735.17 7439921 Lead 0.030 60.00 LCT000 Lead Compounds 0.031 61.69 MAR500 Manganese Compounds 0.073 146.33 EDF033 Mercury Compounds 0.013 25.99 74839 Methyl Bromide (Bromomethane) 0.047 93.42 60344 Methyl Hydrazine 0.050 100.00 NDB000 Nickel Compounds 0.046 91.73 65996932 Polycyclic aromatic hydrocarbons 0.000 0.49 246 Polycyclic Organic Matter 0.013 26.86 123386 Propionaldehyde 0.012 24.63 253 Selenium & Compounds 0.407 813.47 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 2.066 4,131.57 12103 Questar Pipeline Company: Oak Spring Turbine Compressor Station 50000 Formaldehyde 2.128 4,256.00 13000 Questar Pipeline Company: Price Dew Point Plant 540841 2,2,4-Trimethylpentane 0.020 40.00 75070 Acetaldehyde 0.010 20.00 107028 Acrolein 0.010 20.00 71432 Benzene (Including Benzene From Gasoline) 2.240 4,480.00 100414 Ethyl Benzene 0.120 240.00 50000 Formaldehyde 0.210 420.00 110543 Hexane 0.340 680.00 67561 Methanol 0.210 420.00

4/20/2010 Page 6 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Carbon 13000 Questar Pipeline Company: Price Dew Point Plant 108883 Toluene 2.080 4,160.00 1330207 Xylenes (Isomers And Mixture) 0.440 880.00 10096 Sunnyside Cogeneration Associates: Sunnyside Cogeneration Facility 79345 1,1,2,2-Tetrachloroethane 0.049 98.46 121142 2,4-Dinitrotoluene 0.000 0.11 532274 2-Chloroacetophenone 0.001 2.87 83329 Acenaphthene(TSP) 0.000 0.21 208968 Acenaphthylene(TSP) 0.000 0.10 75070 Acetaldehyde 0.117 233.82 98862 Acetophenone 0.003 6.15 107028 Acrolein 0.059 118.96 120127 Anthracene 0.000 0.09 7440360 Antimony (TSP) 0.000 0.76 7440382 Arsenic (TSP) 0.001 2.29 71432 Benzene (Including Benzene From Gasoline) 0.267 533.29 205992 Benzo (B) Fluoranthene 0.000 0.05 56553 Benzo(A)Anthracene 0.000 0.03 192972 Benzo(E)Pyrene/Tsp 0.000 0.01 100447 Benzyl Chloride 0.144 287.15 7440417 Beryllium (TSP) 0.000 0.33 92524 Biphenyl 0.000 0.70 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.015 29.95 75252 Bromoform 0.008 16.00 7440439 Cadmium 0.001 2.96 75150 Carbon Disulfide 0.027 53.33 108907 Chlorobenzene 0.005 9.02 67663 Chloroform 0.012 24.20 CMJ500 Chromium Compounds 0.010 20.18 18540299 Chromium VI 0.016 32.41 218019 Chrysene (TSP) 0.000 0.04 7440484 Cobalt (TSP) 0.001 1.57 98828 Cumene 0.001 2.17 57125 Cyanide 0.513 1,025.52 77781 Dimethyl Sulfate 0.010 19.69 100414 Ethyl Benzene 0.019 38.56 75003 Ethyl Chloride (Chloroethane) 0.009 17.23 106934 Ethylene Dibromide (Dibromoethane) 0.000 0.49 107062 Ethylene Dichloride (1,2-Dichloroethane) 0.008 16.41 206440 Fluoranthene (TSP) 0.000 0.29 50000 Formaldehyde 0.050 100.65 110543 Hexane 0.014 27.48 7647010 Hydrochloric Acid (Hydrogen Chloride) 27.462 54,923.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.549 1,098.00

4/20/2010 Page 7 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Carbon 10096 Sunnyside Cogeneration Associates: Sunnyside Cogeneration Facility 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.03 78591 Isophorone 0.119 237.92 7439921 Lead 0.094 188.00 7439965 Manganese (TSP) 0.059 118.40 7439976 Mercury (TSP) 0.001 1.12 74839 Methyl Bromide (Bromomethane) 0.033 65.63 74873 Methyl Chloride (Chloromethane) 0.109 217.41 60344 Methyl Hydrazine 0.004 8.20 108101 Methyl Isobutyl Ketone (Hexone) 0.080 159.98 80626 Methyl Methacrylate 0.035 69.74 1634044 Methyl Tert Butyl Ether 0.007 14.36 248 Methylchrysene 0.000 0.01 91203 Naphthalene 0.003 5.41 7440020 Nickel 0.003 5.52 95476 O-Xylenes 0.000 0.01 85018 Phenanthrene 0.001 1.11 108952 Phenol 0.059 118.96 246 Polycyclic Organic Matter 0.000 0.22 123386 Propionaldehyde 0.003 6.56 129000 Pyrene 0.000 0.14 7782492 Selenium (TSP) 0.267 533.47 100425 Styrene 0.004 8.20 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 9.450 18,899.00 127184 Tetrachloroethylene (Perchloroethylene) 0.078 155.88 108883 Toluene 0.009 18.05 108054 Vinyl Acetate 0.002 3.12 1330207 Xylenes (Isomers And Mixture) 0.008 15.18 Daggett 11532 Questar Pipeline Company: Kastler/Marushack Compressor Station 540841 2,2,4-Trimethylpentane 0.111 221.20 107028 Acrolein 0.153 305.40 50000 Formaldehyde 3.589 7,178.40 110543 Hexane 1.023 2,046.50 108883 Toluene 2.349 4,698.70 1330207 Xylenes (Isomers And Mixture) 0.899 1,799.00 Davis 10148 Ashland Inc.: Chemical Distribution Center 110543 Hexane 0.370 740.00 67561 Methanol 0.580 1,160.00 11974 Bountiful City Corporation: Bountiful Sanitary Landfill 79345 1,1,2,2-Tetrachloroethane 0.090 180.00 107131 Acrylonitrile 0.160 320.00 71432 Benzene (Including Benzene From Gasoline) 0.070 140.00

4/20/2010 Page 8 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 11974 Bountiful City Corporation: Bountiful Sanitary Landfill 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.010 20.00 110543 Hexane 0.270 540.00 75092 Methylene Chloride (Dichloromethane) 0.560 1,120.00 127184 Tetrachloroethylene (Perchloroethylene) 0.290 580.00 108883 Toluene 1.680 3,360.00 75014 Vinyl Chloride 0.210 420.00 1330207 Xylenes (Isomers And Mixture) 0.600 1,200.00 10120 Bountiful City Light and Power: Power Plant 75070 Acetaldehyde 0.000 0.98 107028 Acrolein 0.000 0.22 71432 Benzene (Including Benzene From Gasoline) 0.006 12.52 50000 Formaldehyde 0.006 11.66 108883 Toluene 0.003 6.38 1330207 Xylenes (Isomers And Mixture) 0.002 4.00 10119 Chevron Products Co - SL Refinery: Salt Lake Refinery 106990 1,3-Butadiene 0.249 497.80 540841 2,2,4-Trimethylpentane 0.348 696.40 75070 Acetaldehyde 0.344 687.80 7440382 Arsenic (TSP) 0.000 0.80 71432 Benzene (Including Benzene From Gasoline) 1.019 2,037.20 100414 Ethyl Benzene 0.422 844.20 50000 Formaldehyde 2.117 4,234.80 110543 Hexane 3.409 6,818.80 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 1.539 3,078.40 7439921 Lead 0.003 6.34 108952 Phenol 0.003 6.00 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 0.384 768.60 108883 Toluene 3.408 6,815.80 1330207 Xylenes (Isomers And Mixture) 2.014 4,027.20 10130 Clipper Publishing: Printing Presses 107211 Ethylene Glycol 0.174 349.00 10181 Companion Systems Incorporated: Fiberglass Manufacturing 131113 Dimethyl Phthalate 0.010 20.00 100414 Ethyl Benzene 0.050 100.00 822060 Hexamethylene-1,6-Diisocyanate 0.000 0.27 108101 Methyl Isobutyl Ketone (Hexone) 0.000 0.07 80626 Methyl Methacrylate 0.010 20.00 75092 Methylene Chloride (Dichloromethane) 0.094 188.00 100425 Styrene 5.310 10,620.00 108883 Toluene 0.020 40.00 1330207 Xylenes (Isomers And Mixture) 0.370 740.00 10122 Flying J Incorporated: Flying J Refinery (Big West Oil Co.)

4/20/2010 Page 9 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 10122 Flying J Incorporated: Flying J Refinery (Big West Oil Co.) 540841 2,2,4-Trimethylpentane 0.946 1,891.06 71432 Benzene (Including Benzene From Gasoline) 2.448 4,895.48 98828 Cumene 0.033 65.00 100414 Ethyl Benzene 0.084 168.12 50000 Formaldehyde 1.935 3,869.40 110543 Hexane 11.013 22,025.38 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 1.610 3,220.00 7439921 Lead 0.001 1.24 1634044 Methyl Tert Butyl Ether 0.636 1,272.70 91203 Naphthalene 0.006 11.50 108883 Toluene 1.694 3,388.42 1330207 Xylenes (Isomers And Mixture) 2.403 4,805.52 12785 Foreland Refining Corporation: Asphalt Blowing Plant 65996932 Polycyclic aromatic hydrocarbons 0.000 0.03 10184 Geneva Rock Products: South Weber Pit 106990 1,3-Butadiene 0.000 0.05 83329 Acenaphthene(TSP) 0.000 0.03 208968 Acenaphthylene(TSP) 0.000 0.07 75070 Acetaldehyde 0.001 1.15 107028 Acrolein 0.000 0.17 120127 Anthracene 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.003 6.22 205992 Benzo (B) Fluoranthene 0.000 0.01 207089 Benzo (K) Fluoranthene 0.000 0.00 56553 Benzo(A)Anthracene 0.000 0.01 50328 Benzo(A)Pyrene 0.000 0.00 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.00 218019 Chrysene (TSP) 0.000 0.01 53703 Dibenzo(A,H)Anthracn 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.04 50000 Formaldehyde 0.001 2.04 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.00 91203 Naphthalene 0.000 0.95 85018 Phenanthrene 0.000 0.30 65996932 Polycyclic aromatic hydrocarbons 0.000 0.16 246 Polycyclic Organic Matter 0.001 1.58 129000 Pyrene 0.000 0.03 108883 Toluene 0.001 2.34 1330207 Xylenes (Isomers And Mixture) 0.001 1.62 10121 Hill Air Force Base: Main Base 106887 1,2-Epoxybutane 0.404 808.00 540841 2,2,4-Trimethylpentane 0.224 448.00 101779 4,4-Methylenedianiline 1.901 3,802.00

4/20/2010 Page 10 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 10121 Hill Air Force Base: Main Base 75070 Acetaldehyde 0.182 364.00 107028 Acrolein 0.102 204.00 71432 Benzene (Including Benzene From Gasoline) 0.285 570.00 124174 Diethylene Glycol Monobutylether A 1.681 3,362.00 68122 Dimethyl Formamide 0.258 516.00 100414 Ethyl Benzene 0.316 632.00 107211 Ethylene Glycol 0.183 366.00 50000 Formaldehyde 0.731 1,462.00 110543 Hexane 5.050 10,100.00 67561 Methanol 3.174 6,348.00 108101 Methyl Isobutyl Ketone (Hexone) 3.489 6,978.00 75092 Methylene Chloride (Dichloromethane) 14.869 29,738.00 101688 Methylene Diphenyl Diisocyanate (MDI) 0.294 588.00 108952 Phenol 4.438 8,876.00 108883 Toluene 5.314 10,628.00 1330207 Xylenes (Isomers And Mixture) 4.674 9,348.00 10123 Holly Refining & Marketing Company: Phillips Refinery 540841 2,2,4-Trimethylpentane 0.418 835.07 ARF750 Arsenic Compounds 0.000 0.68 71432 Benzene (Including Benzene From Gasoline) 4.981 9,962.86 BFQ500 Beryllium Compounds 0.000 0.01 CAE750 Cadmium Compounds 0.002 3.57 7782505 Chlorine 1.499 2,998.00 CMJ500 Chromium Compounds 0.002 4.50 CNB850 Cobalt Compounds 0.000 0.28 100414 Ethyl Benzene 2.563 5,126.23 50000 Formaldehyde 3.601 7,202.31 110543 Hexane 5.079 10,158.25 7439921 Lead 0.001 2.00 EDF033 Mercury Compounds 0.000 0.87 91203 Naphthalene 0.034 68.11 226 Nickel & Compounds 0.040 79.37 108883 Toluene 1.717 3,434.74 1330207 Xylenes (Isomers And Mixture) 6.620 13,239.70 10146 Honeywell International Incorporated: Automotive Oil & Air Filters - Clearfield 71432 Benzene (Including Benzene From Gasoline) 0.000 0.10 107211 Ethylene Glycol 0.050 100.00 50000 Formaldehyde 0.017 34.00 110543 Hexane 0.042 84.00 67561 Methanol 0.926 1,852.00 108101 Methyl Isobutyl Ketone (Hexone) 0.161 322.00 108952 Phenol 0.078 156.00 1330207 Xylenes (Isomers And Mixture) 0.448 896.00

4/20/2010 Page 11 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 13091 Linde Hydrogen Plant: Hydrogen Gas Production 540841 2,2,4-Trimethylpentane 0.001 1.46 50000 Formaldehyde 0.009 18.00 65996932 Polycyclic aromatic hydrocarbons 0.000 0.18 246 Polycyclic Organic Matter 0.000 0.15 10187 North Davis Cabinet Incorporated: N. Davis Cabinet Manufacturing Facility 50000 Formaldehyde 0.020 40.00 110543 Hexane 0.410 820.00 108883 Toluene 1.200 2,400.00 1330207 Xylenes (Isomers And Mixture) 0.330 660.00 10133 North Salt Lake Terminal 540841 2,2,4-Trimethylpentane 0.400 800.00 71432 Benzene (Including Benzene From Gasoline) 0.300 600.00 110543 Hexane 0.700 1,400.00 108883 Toluene 0.600 1,200.00 1330207 Xylenes (Isomers And Mixture) 0.200 400.00 12145 Peak Asphalt LLC: Cowboy Asphalt Terminal CAE750 Cadmium Compounds 0.000 0.04 CMJ500 Chromium Compounds 0.000 0.04 7439921 Lead 0.000 0.08 65996932 Polycyclic aromatic hydrocarbons 0.000 0.46 14125 RPS Utah LLC:Reinforced Fiberglass Manufacturing Plant 131113 Dimethyl Phthalate 0.680 1,360.00 121697 N,N-Diethyl Aniline (N,N-Dimethylaniline) 0.090 180.00 100425 Styrene 7.820 15,640.00 10124 Silver Eagle Refining - Woods Cross Inc.: Petroleum Products Refining 540841 2,2,4-Trimethylpentane 0.000 0.80 7440382 Arsenic (TSP) 0.027 54.60 71432 Benzene (Including Benzene From Gasoline) 1.188 2,375.75 CAE750 Cadmium Compounds 0.000 0.15 CMJ500 Chromium Compounds 0.000 0.80 50000 Formaldehyde 0.001 1.76 110543 Hexane 3.733 7,465.76 7439921 Lead 0.001 1.44 108883 Toluene 2.957 5,914.21 1330207 Xylenes (Isomers And Mixture) 0.582 1,163.80 10142 Stericycle Incorporated: BFI Medical Waste Incinerator ADQ500 Antimony Compounds 0.001 1.60 ARF750 Arsenic Compounds 0.000 0.09 BFQ500 Beryllium Compounds 0.000 0.03 CAE750 Cadmium Compounds 0.000 0.05 7782505 Chlorine 0.390 780.00 CMJ500 Chromium Compounds 0.001 2.00

4/20/2010 Page 12 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 10142 Stericycle Incorporated: BFI Medical Waste Incinerator 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.490 980.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.050 100.00 LCT000 Lead Compounds 0.000 0.54 MAR500 Manganese Compounds 0.002 4.00 EDF033 Mercury Compounds 0.000 0.56 NDB000 Nickel Compounds 0.002 4.00 1336363 Polychlorinated Biphenyls (Aroclors) 0.000 0.36 10156 Utility Trailer Manufacturing Company: Trailer Manufacturing Facility 100414 Ethyl Benzene 0.114 227.70 EDF109 Glycol Ethers 2.357 4,714.00 108101 Methyl Isobutyl Ketone (Hexone) 1.131 2,262.50 108883 Toluene 0.138 275.30 1330207 Xylenes (Isomers And Mixture) 0.671 1,341.20 10129 Wasatch Integrated Waste Mgt District: County Landfill & Energy Recovery Facility (D 79345 1,1,2,2-Tetrachloroethane 0.007 13.07 79005 1,1,2-Trichloroethane 0.026 51.96 542756 1,3-Dichloropropene 0.002 4.40 23436193 1-Isobutoxy-2-Propanol 1.247 2,494.73 107131 Acrylonitrile 0.139 278.31 71432 Benzene (Including Benzene From Gasoline) 0.017 34.95 7440439 Cadmium 0.000 0.00 75150 Carbon Disulfide 0.007 14.83 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.014 28.32 56235 Carbon Tetrachloride 0.004 8.37 108907 Chlorobenzene 0.005 9.33 67663 Chloroform 0.010 20.49 25321226 Dichlorobenzene 0.013 25.58 77781 Dimethyl Sulfate 0.201 402.52 100414 Ethyl Benzene 0.224 448.68 75003 Ethyl Chloride (Chloroethane) 0.005 9.62 106934 Ethylene Dibromide (Dibromoethane) 0.000 0.16 75343 Ethylidene Dichloride (1,1-Dichloroethane) 0.023 45.01 110543 Hexane 0.235 469.18 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.002 4.59 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.000 0.02 7439921 Lead 0.000 0.07 7439976 Mercury (TSP) 0.000 0.08 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.027 53.06 108101 Methyl Isobutyl Ketone (Hexone) 0.078 155.16 75092 Methylene Chloride (Dichloromethane) 0.503 1,006.22 127184 Tetrachloroethylene (Perchloroethylene) 0.256 512.44 108883 Toluene 0.366 732.94 79016 Trichloroethylene 0.006 11.97

4/20/2010 Page 13 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Davis 10129 Wasatch Integrated Waste Mgt District: County Landfill & Energy Recovery Facility (D 75014 Vinyl Chloride 0.044 88.03 1330207 Xylenes (Isomers And Mixture) 0.418 835.72 12501 Wavell-Huber Wood Products Incorporated: Architectural Woodworking Shop 131113 Dimethyl Phthalate 0.050 100.00 100414 Ethyl Benzene 0.030 60.00 50000 Formaldehyde 0.040 80.00 EDF109 Glycol Ethers 0.030 60.00 67561 Methanol 0.060 120.00 108101 Methyl Isobutyl Ketone (Hexone) 0.110 220.00 75092 Methylene Chloride (Dichloromethane) 0.070 140.00 108883 Toluene 0.240 480.00 1330207 Xylenes (Isomers And Mixture) 0.160 320.00 12056 Worthington Foods, Inc.: Clearfield Facility 50000 Formaldehyde 0.000 0.20 110543 Hexane 0.050 100.00 10153 Zero Manufacturing Incorporated: Aluminum Case & Container Mfg. 584849 2,4-Toluene Diisocyanate 0.005 10.22 CMJ500 Chromium Compounds 0.080 160.00 CNB850 Cobalt Compounds 0.012 23.80 100414 Ethyl Benzene 0.020 40.25 50000 Formaldehyde 0.017 33.00 EDF109 Glycol Ethers 0.004 7.21 110543 Hexane 5.096 10,193.00 7439921 Lead 0.001 1.00 67561 Methanol 0.039 77.00 108101 Methyl Isobutyl Ketone (Hexone) 0.109 218.00 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 0.033 65.00 108883 Toluene 1.070 2,139.96 1330207 Xylenes (Isomers And Mixture) 0.123 246.56 Duchesne 10221 Burdick Paving Company: Madsen 4000 Asphalt Hot Plant #481 540841 2,2,4-Trimethylpentane 0.000 0.00 50000 Formaldehyde 0.020 40.00 7439921 Lead 0.000 0.04 106514 Quinone 0.010 20.00 10005 El Paso Field Operations Company: Altamont Main Gas Processing Plant 106990 1,3-Butadiene 0.075 150.00 75070 Acetaldehyde 0.316 632.40 107028 Acrolein 0.297 594.60 71432 Benzene (Including Benzene From Gasoline) 3.734 7,468.00 7440439 Cadmium 0.000 0.20 50000 Formaldehyde 2.326 4,652.60

4/20/2010 Page 14 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Duchesne 10005 El Paso Field Operations Company: Altamont Main Gas Processing Plant 110543 Hexane 4.144 8,287.20 67561 Methanol 0.346 691.40 108883 Toluene 2.347 4,693.60 10211 El Paso Field Operations Company: Altamont South Compressor Station 106990 1,3-Butadiene 0.075 149.86 75070 Acetaldehyde 0.536 1,072.72 107028 Acrolein 0.529 1,058.72 71432 Benzene (Including Benzene From Gasoline) 3.053 6,105.16 50000 Formaldehyde 3.851 7,701.78 110543 Hexane 1.073 2,145.18 7439921 Lead 0.000 0.01 67561 Methanol 0.279 557.92 108883 Toluene 1.059 2,117.66 10210 El Paso Field Operations Company: Altamont West Compressor Station 107028 Acrolein 0.013 26.77 71432 Benzene (Including Benzene From Gasoline) 0.733 1,466.23 50000 Formaldehyde 0.104 208.85 110543 Hexane 3.884 7,768.70 7439921 Lead 0.000 0.00 108883 Toluene 0.401 802.83 10219 El Paso Field Operations Company: Bluebell Gas Plant 106990 1,3-Butadiene 0.035 69.62 107028 Acrolein 0.670 1,340.26 71432 Benzene (Including Benzene From Gasoline) 2.004 4,008.00 7440439 Cadmium 0.000 0.12 50000 Formaldehyde 6.890 13,780.00 110543 Hexane 5.325 10,649.80 67561 Methanol 0.326 652.00 108883 Toluene 2.301 4,602.80 10209 El Paso: Altamont East Compressor Station 106990 1,3-Butadiene 0.023 46.74 107028 Acrolein 0.093 185.42 71432 Benzene (Including Benzene From Gasoline) 1.597 3,194.14 50000 Formaldehyde 0.724 1,447.23 110543 Hexane 3.373 6,746.01 108883 Toluene 0.347 694.45 13009 Monarch Natural Gas, LLC: Gate Canyon Natural Gas Compressor 71432 Benzene (Including Benzene From Gasoline) 1.070 2,140.00 50000 Formaldehyde 0.100 200.00 108883 Toluene 2.030 4,060.00 1330207 Xylenes (Isomers And Mixture) 1.310 2,620.00 13079 Questar Pipeline Company: Blind Canyon Compressor station

4/20/2010 Page 15 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Duchesne 13079 Questar Pipeline Company: Blind Canyon Compressor station 50000 Formaldehyde 1.210 2,420.00 Emery 10237 PacifiCorp: Hunter Power Plant 120821 1,2,4-Trichlorobenzene 0.012 23.82 121142 2,4-Dinitrotoluene 0.048 95.16 532274 2-Chloroacetophenone 0.011 22.16 75070 Acetaldehyde 0.266 532.14 107028 Acrolein 0.097 193.34 107051 Allyl Chloride 0.302 603.34 ADQ500 Antimony Compounds 0.011 22.42 ARF750 Arsenic Compounds 0.024 47.78 71432 Benzene (Including Benzene From Gasoline) 0.129 258.52 BFQ500 Beryllium Compounds 0.053 105.90 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.347 693.44 75252 Bromoform 0.062 123.48 CAE750 Cadmium Compounds 0.024 48.66 108907 Chlorobenzene 0.133 266.86 67663 Chloroform 0.126 251.18 CMJ500 Chromium Compounds 0.300 600.00 CNB850 Cobalt Compounds 0.040 80.00 98828 Cumene 7.566 15,132.58 57125 Cyanide 11.317 22,634.96 132649 Dibenzofurans 0.019 38.38 84742 Dibutylphthalate 0.042 84.84 77781 Dimethyl Sulfate 0.076 151.96 100414 Ethyl Benzene 0.038 75.36 75003 Ethyl Chloride (Chloroethane) 0.416 832.00 106934 Ethylene Dibromide (Dibromoethane) 0.088 175.82 50000 Formaldehyde 0.086 172.14 110543 Hexane 1.962 3,924.54 7647010 Hydrochloric Acid (Hydrogen Chloride) 46.040 92,079.16 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 29.146 58,291.22 78591 Isophorone 0.007 13.30 7439921 Lead 0.090 180.00 LCT000 Lead Compounds 0.123 246.54 MAR500 Manganese Compounds 0.264 528.32 EDF033 Mercury Compounds 0.052 104.84 74839 Methyl Bromide (Bromomethane) 0.283 565.44 74873 Methyl Chloride (Chloromethane) 0.843 1,685.14 60344 Methyl Hydrazine 0.269 538.22 74884 Methyl Iodide (Iodomethane) 0.008 16.94 108101 Methyl Isobutyl Ketone (Hexone) 0.015 29.04 80626 Methyl Methacrylate 0.031 61.22

4/20/2010 Page 16 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Emery 10237 PacifiCorp: Hunter Power Plant 1634044 Methyl Tert Butyl Ether 0.059 117.48 75092 Methylene Chloride (Dichloromethane) 0.460 920.00 91203 Naphthalene 0.000 0.80 NDB000 Nickel Compounds 0.144 288.00 95476 O-Xylenes 0.064 127.28 106445 P-Cresol 0.006 13.00 108952 Phenol 0.004 7.18 7723140 Phosphorus 0.148 296.96 65996932 Polycyclic aromatic hydrocarbons 0.032 64.52 246 Polycyclic Organic Matter 0.069 137.10 123386 Propionaldehyde 0.063 125.72 253 Selenium & Compounds 0.591 1,181.50 100425 Styrene 0.003 6.52 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 15.951 31,902.64 108883 Toluene 0.042 84.84 75014 Vinyl Chloride 0.024 48.30 10238 PacifiCorp: Huntington Power Plant 121142 2,4-Dinitrotoluene 0.005 10.00 532274 2-Chloroacetophenone 0.009 18.00 107028 Acrolein 0.052 104.00 107051 Allyl Chloride 0.250 500.00 ADQ500 Antimony Compounds 0.012 24.00 ARF750 Arsenic Compounds 0.040 80.00 71432 Benzene (Including Benzene From Gasoline) 0.108 216.00 BFQ500 Beryllium Compounds 0.003 6.00 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.099 198.00 CAE750 Cadmium Compounds 0.030 60.00 CMJ500 Chromium Compounds 0.245 490.00 CNB850 Cobalt Compounds 0.034 68.00 57125 Cyanide 3.347 6,694.00 132649 Dibenzofurans 0.016 32.00 77781 Dimethyl Sulfate 0.064 128.00 106934 Ethylene Dibromide (Dibromoethane) 0.073 146.00 50000 Formaldehyde 0.072 144.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 502.752 1,005,504.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 178.611 357,222.00 7439921 Lead 0.110 220.00 MAR500 Manganese Compounds 0.286 572.00 EDF033 Mercury Compounds 0.023 46.00 74839 Methyl Bromide (Bromomethane) 0.214 428.00 74873 Methyl Chloride (Chloromethane) 0.710 1,420.00 60344 Methyl Hydrazine 0.228 456.00 75092 Methylene Chloride (Dichloromethane) 0.388 776.00

4/20/2010 Page 17 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Emery 10238 PacifiCorp: Huntington Power Plant 226 Nickel & Compounds 0.184 368.00 65996932 Polycyclic aromatic hydrocarbons 0.001 2.00 246 Polycyclic Organic Matter 0.057 114.00 123386 Propionaldehyde 0.052 104.00 253 Selenium & Compounds 0.988 1,976.00 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 20.880 41,760.00 75014 Vinyl Chloride 0.020 40.00 Garfield 14010 Denison Mines (USA) Corp.: Tony M. Mine 50000 Formaldehyde 0.003 6.72 LCT000 Lead Compounds 0.000 0.05 1165 Radionuclides (including Radon)/5/ 0.000 0.97 14138 Uranium One Exploration Inc.-Ticaboo Generation Facility 71432 Benzene (Including Benzene From Gasoline) 0.007 14.09 50000 Formaldehyde 0.001 1.44 12289 Western Rock Products Corporation: Panguitch Pit 540841 2,2,4-Trimethylpentane 0.000 0.51 75070 Acetaldehyde 0.008 16.50 107028 Acrolein 0.000 0.33 7440382 Arsenic (TSP) 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.002 4.96 7440439 Cadmium 0.000 0.01 CMJ500 Chromium Compounds 0.000 0.08 100414 Ethyl Benzene 0.002 3.05 50000 Formaldehyde 0.020 39.40 110543 Hexane 0.006 11.70 7439921 Lead 0.000 0.19 7439965 Manganese (TSP) 0.000 0.10 22967926 Mercury (Organic) 0.000 0.03 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.000 0.61 91203 Naphthalene 0.004 8.27 7440020 Nickel 0.000 0.80 7723140 Phosphorus 0.000 0.36 65996932 Polycyclic aromatic hydrocarbons 0.001 2.99 123386 Propionaldehyde 0.001 1.65 106514 Quinone 0.001 2.04 253 Selenium & Compounds 0.000 0.00 108883 Toluene 0.018 36.90 1330207 Xylenes (Isomers And Mixture) 0.001 2.54 Grand 10268 ETC Canyon Pipeline, LLC: San Arroyo Plant 75070 Acetaldehyde 4.524 9,048.00

4/20/2010 Page 18 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Grand 10268 ETC Canyon Pipeline, LLC: San Arroyo Plant 107028 Acrolein 0.494 987.60 71432 Benzene (Including Benzene From Gasoline) 0.385 769.00 50000 Formaldehyde 3.595 7,189.20 13014 ETC Canyon Pipeline, LLC: Harley Dome NGL Extraction Facility 75070 Acetaldehyde 0.010 20.00 71432 Benzene (Including Benzene From Gasoline) 0.991 1,982.00 100414 Ethyl Benzene 0.007 13.60 50000 Formaldehyde 0.730 1,460.00 110543 Hexane 0.173 345.80 108883 Toluene 0.235 470.00 1330207 Xylenes (Isomers And Mixture) 0.120 239.00 10263 Mid-America Pipeline Company: Harley Dome Station 75070 Acetaldehyde 0.300 600.00 107028 Acrolein 0.005 10.00 71432 Benzene (Including Benzene From Gasoline) 0.009 18.00 50000 Formaldehyde 0.293 586.00 10257 Mid-America Pipeline Company: Thompson Site 75070 Acetaldehyde 0.140 280.00 107028 Acrolein 0.002 4.00 71432 Benzene (Including Benzene From Gasoline) 0.004 8.00 50000 Formaldehyde 0.137 273.40 10259 Northwest Pipeline GP: Cisco Compressor Station 50000 Formaldehyde 0.088 176.00 Iron 10273 Ashdown Brothers Construction: Asphalt Plant/Crusher/Concrete Plant 65996932 Polycyclic aromatic hydrocarbons 0.001 2.54 12911 Mel Clark Construction: Cedar City Aggregate Processing Plant 65996932 Polycyclic aromatic hydrocarbons 0.000 0.75 14086 Southern Utah Asphalt: Cedar City Asphalt Plant 540841 2,2,4-Trimethylpentane 0.002 4.00 71432 Benzene (Including Benzene From Gasoline) 0.023 46.00 50000 Formaldehyde 0.182 364.00 7723140 Phosphorus 0.001 2.80 11808 Sunroc Corporation: Cedar City Aggregate and Concrete Batch Plant Facility 7439921 Lead 0.000 0.00 65996932 Polycyclic aromatic hydrocarbons 0.000 0.32 246 Polycyclic Organic Matter 0.000 0.00 13256 UNEV Pipeline, LLC: Diesel Products Storage THAPS Total HAPs 0.465 930.00 10278 Western Rock Products Corporation: Cedar City Yard & Ready Mix Plant 540841 2,2,4-Trimethylpentane 0.001 2.33

4/20/2010 Page 19 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Iron 10278 Western Rock Products Corporation: Cedar City Yard & Ready Mix Plant 75070 Acetaldehyde 0.038 75.70 107028 Acrolein 0.001 1.51 7440382 Arsenic (TSP) 0.000 0.03 71432 Benzene (Including Benzene From Gasoline) 0.011 22.70 7440439 Cadmium 0.000 0.02 CMJ500 Chromium Compounds 0.000 0.35 7440484 Cobalt (TSP) 0.000 0.00 100414 Ethyl Benzene 0.007 14.00 50000 Formaldehyde 0.090 180.00 110543 Hexane 0.027 53.60 7439921 Lead 0.000 0.87 7439965 Manganese (TSP) 0.000 0.45 22967926 Mercury (Organic) 0.000 0.15 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.001 2.79 91203 Naphthalene 0.019 37.80 7440020 Nickel 0.002 3.67 7723140 Phosphorus 0.001 1.63 65996932 Polycyclic aromatic hydrocarbons 0.007 13.70 123386 Propionaldehyde 0.004 7.57 106514 Quinone 0.005 9.31 253 Selenium & Compounds 0.000 0.02 108883 Toluene 0.085 169.00 1330207 Xylenes (Isomers And Mixture) 0.006 11.60 Juab 10303 Ash Grove Cement Company: Leamington Cement Plant 83329 Acenaphthene(TSP) 0.050 100.00 7440382 Arsenic (TSP) 0.010 20.00 71432 Benzene (Including Benzene From Gasoline) 6.710 13,420.00 7440417 Beryllium (TSP) 0.001 1.00 7440439 Cadmium 0.001 2.00 CMJ500 Chromium Compounds 0.060 120.00 53703 Dibenzo(A,H)Anthracn 0.001 1.00 206440 Fluoranthene (TSP) 0.003 6.00 50000 Formaldehyde 0.190 380.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.700 1,400.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.150 300.00 7439921 Lead 0.030 60.00 22967926 Mercury (Organic) 0.010 20.00 91203 Naphthalene 0.710 1,420.00 253 Selenium & Compounds 0.080 160.00 12982 John Kuhni Sons Incorporated: Levan Rendering Plant 7782505 Chlorine 0.210 420.00 12524 PacifiCorp: Currant Creek Power Plant

4/20/2010 Page 20 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Juab 12524 PacifiCorp: Currant Creek Power Plant 106990 1,3-Butadiene 0.004 7.99 75070 Acetaldehyde 0.371 742.39 107028 Acrolein 0.059 118.78 71432 Benzene (Including Benzene From Gasoline) 0.112 223.49 100414 Ethyl Benzene 0.297 593.87 50000 Formaldehyde 2.794 5,588.24 91203 Naphthalene 0.012 24.31 65996932 Polycyclic aromatic hydrocarbons 0.020 40.83 75569 Propylene Oxide 0.269 538.20 108883 Toluene 1.207 2,413.64 1330207 Xylenes (Isomers And Mixture) 0.594 1,187.80 13072 Sunroc Corporation: Chicken Creek Gypsum Processing Plant 65996932 Polycyclic aromatic hydrocarbons 0.000 0.04 246 Polycyclic Organic Matter 0.000 0.10 Millard 10311 Brush Resources Incorporated: Delta Mill 7440417 Beryllium (TSP) 0.026 51.20 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.022 44.94 7439921 Lead 0.000 0.09 10313 Graymont Western US Incorporated: Cricket Mountain Plant 7440382 Arsenic (TSP) 0.016 32.27 7440417 Beryllium (TSP) 0.000 0.03 7440439 Cadmium 0.001 1.42 CMJ500 Chromium Compounds 0.002 4.20 50000 Formaldehyde 0.666 1,331.35 118741 Hexachlorobenzene 0.000 0.19 7647010 Hydrochloric Acid (Hydrogen Chloride) 12.518 25,036.61 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.107 214.26 7439921 Lead 0.090 180.00 7439965 Manganese (TSP) 0.051 101.85 22967926 Mercury (Organic) 0.006 12.83 7440020 Nickel 0.003 5.80 253 Selenium & Compounds 0.014 27.94 10327 Intermountain Power Service Corporation: Intermountain Generation Station 79345 1,1,2,2-Tetrachloroethane 0.061 121.96 121142 2,4-Dinitrotoluene 0.001 1.71 532274 2-Chloroacetophenone 0.021 42.68 83329 Acenaphthene(TSP) 0.002 3.11 208968 Acenaphthylene(TSP) 0.001 1.52 98862 Acetophenone 0.046 91.46 107028 Acrolein 0.008 15.74 120127 Anthracene 0.001 1.28

4/20/2010 Page 21 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Millard 10327 Intermountain Power Service Corporation: Intermountain Generation Station 71432 Benzene (Including Benzene From Gasoline) 0.262 524.61 205992 Benzo (B) Fluoranthene 0.000 0.67 56553 Benzo(A)Anthracene 0.000 0.49 50328 Benzo(A)Pyrene 0.000 0.25 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.16 100447 Benzyl Chloride 2.134 4,268.44 92524 Biphenyl 0.005 10.37 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.223 445.14 75252 Bromoform 0.119 237.81 75150 Carbon Disulfide 0.396 792.71 108907 Chlorobenzene 0.067 134.15 67663 Chloroform 0.180 359.77 218019 Chrysene (TSP) 0.000 0.61 98828 Cumene 0.016 32.32 77781 Dimethyl Sulfate 0.146 292.69 100414 Ethyl Benzene 0.287 573.19 75003 Ethyl Chloride (Chloroethane) 0.128 256.10 106934 Ethylene Dibromide (Dibromoethane) 0.004 7.32 107062 Ethylene Dichloride (1,2-Dichloroethane) 0.122 243.91 206440 Fluoranthene (TSP) 0.002 4.33 50000 Formaldehyde 0.095 190.12 110543 Hexane 0.204 408.55 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.37 78591 Isophorone 1.768 3,536.70 7439921 Lead 0.069 138.40 74839 Methyl Bromide (Bromomethane) 0.488 975.64 74873 Methyl Chloride (Chloromethane) 1.616 3,231.80 60344 Methyl Hydrazine 0.518 1,036.62 108101 Methyl Isobutyl Ketone (Hexone) 1.189 2,378.13 80626 Methyl Methacrylate 0.061 121.94 1634044 Methyl Tert Butyl Ether 0.107 213.40 248 Methylchrysene 0.000 0.13 75092 Methylene Chloride (Dichloromethane) 0.884 1,768.34 91203 Naphthalene 0.040 79.26 85018 Phenanthrene 0.008 16.46 108952 Phenol 0.049 97.56 246 Polycyclic Organic Matter 0.001 1.22 123386 Propionaldehyde 1.159 2,317.14 129000 Pyrene 0.001 2.01 100425 Styrene 0.076 152.40 127184 Tetrachloroethylene (Perchloroethylene) 0.131 262.20 108883 Toluene 0.097 193.76 108054 Vinyl Acetate 0.023 46.34 1330207 Xylenes (Isomers And Mixture) 0.113 225.62

4/20/2010 Page 22 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Millard 10320 Kern River Gas Transmission Company: Fillmore Compressor Station 106990 1,3-Butadiene 0.000 0.99 75070 Acetaldehyde 0.027 53.47 107028 Acrolein 0.002 3.91 71432 Benzene (Including Benzene From Gasoline) 0.009 17.17 25321226 Dichlorobenzene 0.000 0.01 100414 Ethyl Benzene 0.020 39.49 50000 Formaldehyde 0.453 906.63 110543 Hexane 0.009 17.27 67561 Methanol 0.002 4.55 234 PAH, Total 0.000 0.21 108883 Toluene 0.081 161.15 1330207 Xylenes (Isomers And Mixture) 0.040 79.20 Morgan 10007 Holcim (US) Inc.: Devil's Slide Plant 7440382 Arsenic (TSP) 0.004 7.91 71432 Benzene (Including Benzene From Gasoline) 5.077 10,153.07 7440417 Beryllium (TSP) 0.000 0.44 7440439 Cadmium 0.001 1.45 7782505 Chlorine 0.692 1,384.51 CMJ500 Chromium Compounds 0.046 92.30 155 Dioxins 0.000 0.00 50000 Formaldehyde 0.152 303.27 7647010 Hydrochloric Acid (Hydrogen Chloride) 19.416 38,832.18 7439921 Lead 0.003 6.00 22967926 Mercury (Organic) 0.007 13.78 91203 Naphthalene 0.560 1,120.79 3268879 OCTACHLORODIBENZO-P-DIOXIN 0.000 0.00 253 Selenium & Compounds 0.066 131.86 10981 Wilkinson Construction: Drum Mix Asphalt Plant & Crushing Operation 71432 Benzene (Including Benzene From Gasoline) 0.003 5.52 CAE750 Cadmium Compounds 0.000 0.01 CMJ500 Chromium Compounds 0.000 0.08 50000 Formaldehyde 0.024 48.80 7439921 Lead 0.001 2.80 Portable Src 10983 Burdick Paving Company: Cedarapids Asphalt Plant #2: SN# 6422 540841 2,2,4-Trimethylpentane 0.001 2.40 50000 Formaldehyde 0.100 200.00 7439921 Lead 0.000 0.04 11961 Burdick Paving Company: Cedarapids Asphalt Plant #3: SN #E300 540841 2,2,4-Trimethylpentane 0.001 1.80 50000 Formaldehyde 0.070 140.00

4/20/2010 Page 23 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Portable Src 11961 Burdick Paving Company: Cedarapids Asphalt Plant #3: SN #E300 7439921 Lead 0.000 0.03 11642 Construction Products Company: Portable Equipment - Temporary Locations 540841 2,2,4-Trimethylpentane 0.002 4.68 83329 Acenaphthene(TSP) 0.000 0.17 208968 Acenaphthylene(TSP) 0.001 1.83 75070 Acetaldehyde 0.038 76.26 107028 Acrolein 0.001 1.56 7440360 Antimony (TSP) 0.000 0.02 7440382 Arsenic (TSP) 0.000 0.07 71432 Benzene (Including Benzene From Gasoline) 0.025 49.11 205992 Benzo (B) Fluoranthene 0.000 0.02 56553 Benzo(A)Anthracene 0.000 0.02 192972 Benzo(E)Pyrene/Tsp 0.000 0.02 7440439 Cadmium 0.000 0.05 CMJ500 Chromium Compounds 0.000 0.69 218019 Chrysene (TSP) 0.000 0.02 100414 Ethyl Benzene 0.014 28.12 206440 Fluoranthene (TSP) 0.000 0.09 50000 Formaldehyde 0.182 363.51 110543 Hexane 0.054 107.78 7439921 Lead 0.000 0.88 7439965 Manganese (TSP) 0.000 0.90 22967926 Mercury (Organic) 0.000 0.15 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.003 5.62 91203 Naphthalene 0.022 43.92 7440020 Nickel 0.004 7.38 85018 Phenanthrene 0.001 2.00 7723140 Phosphorus 0.002 3.28 65996932 Polycyclic aromatic hydrocarbons 0.006 11.07 123386 Propionaldehyde 0.004 7.61 129000 Pyrene 0.000 0.22 106514 Quinone 0.005 9.37 253 Selenium & Compounds 0.000 0.04 108883 Toluene 0.090 179.89 1330207 Xylenes (Isomers And Mixture) 0.012 24.27 12998 Frehner Construction Company Inc.: Portable Crushing/Screening & Asphalt Plant THAPS Total HAPs 0.090 180.00 12277 Geneva Rock Products: Portable Equipment at Temporary Locations 246 Polycyclic Organic Matter 0.000 0.13 13267 Nile Chapman Construction, Inc.: Portable Aggregate Equipment 75070 Acetaldehyde 0.000 0.19 107028 Acrolein 0.000 0.06 71432 Benzene (Including Benzene From Gasoline) 0.003 5.94

4/20/2010 Page 24 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Portable Src 13267 Nile Chapman Construction, Inc.: Portable Aggregate Equipment 50000 Formaldehyde 0.000 0.60 91203 Naphthalene 0.000 0.99 108883 Toluene 0.001 2.15 1330207 Xylenes (Isomers And Mixture) 0.001 1.48 12575 Sunroc Corporation: Portable Equipment - Temporary Locations 7439921 Lead 0.000 0.00 65996932 Polycyclic aromatic hydrocarbons 0.000 0.06 246 Polycyclic Organic Matter 0.164 327.28 12142 Tru Crushing Inc.: Portable Aggregate Equipment 106990 1,3-Butadiene 0.001 1.57 75070 Acetaldehyde 0.009 17.62 107028 Acrolein 0.001 2.20 71432 Benzene (Including Benzene From Gasoline) 0.017 34.74 50000 Formaldehyde 0.014 27.81 91203 Naphthalene 0.002 4.23 65996932 Polycyclic aromatic hydrocarbons 0.004 7.56 108883 Toluene 0.007 14.16 1330207 Xylenes (Isomers And Mixture) 0.005 9.82 10996 W.W. Clyde and Company: Portable Equipment - Temporary Locations 540841 2,2,4-Trimethylpentane 0.002 4.25 50000 Formaldehyde 0.169 337.70 7439921 Lead 0.001 1.59 123386 Propionaldehyde 0.007 13.75 Salt Lake 14063 3form Material Solutions, Inc.: Plastic Laminate Plant 131113 Dimethyl Phthalate 0.067 133.10 50000 Formaldehyde 0.009 17.18 822060 Hexamethylene-1,6-Diisocyanate 0.001 2.98 234 PAH, Total 0.000 0.03 108883 Toluene 0.779 1,558.00 1330207 Xylenes (Isomers And Mixture) 0.339 678.28 12152 AIBL Painting: Sand Blasting and Painting Operation CMJ500 Chromium Compounds 0.002 4.81 100414 Ethyl Benzene 0.140 280.00 108101 Methyl Isobutyl Ketone (Hexone) 0.500 1,000.00 108883 Toluene 0.740 1,480.00 1330207 Xylenes (Isomers And Mixture) 0.730 1,460.00 10402 Alliant Techsystems Incorporated: Bacchus Works: Plant 1/NIROP/Bacchus West 123911 1,4-Dioxane (1,4-Diethyleneoxide) 0.001 2.00 584849 2,4-Toluene Diisocyanate 0.007 14.40 CAE750 Cadmium Compounds 0.002 4.00 7782505 Chlorine 0.001 2.80

4/20/2010 Page 25 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10402 Alliant Techsystems Incorporated: Bacchus Works: Plant 1/NIROP/Bacchus West CMJ500 Chromium Compounds 0.004 7.80 98828 Cumene 0.000 0.08 25321226 Dichlorobenzene 0.004 7.80 100414 Ethyl Benzene 0.204 408.00 50000 Formaldehyde 0.018 36.00 822060 Hexamethylene-1,6-Diisocyanate 0.972 1,944.00 110543 Hexane 0.000 0.20 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.762 1,524.00 7439921 Lead 0.000 0.01 LCT000 Lead Compounds 0.004 7.00 108316 Maleic Anhydride 0.085 170.00 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.043 86.00 108101 Methyl Isobutyl Ketone (Hexone) 0.084 168.00 75092 Methylene Chloride (Dichloromethane) 0.065 130.00 101688 Methylene Diphenyl Diisocyanate (MDI) 0.007 14.40 91203 Naphthalene 0.172 344.00 NDB000 Nickel Compounds 0.005 10.00 65996932 Polycyclic aromatic hydrocarbons 0.000 0.01 127184 Tetrachloroethylene (Perchloroethylene) 0.054 108.00 108883 Toluene 0.269 538.00 79016 Trichloroethylene 0.253 506.00 1330207 Xylenes (Isomers And Mixture) 0.540 1,080.00 10480 Ameritech Coatings Incorporated: Aluminum Dross Processing Facility CMJ500 Chromium Compounds 0.000 0.06 7440484 Cobalt (TSP) 0.000 0.04 131113 Dimethyl Phthalate 0.749 1,497.00 140885 Ethyl Acrylate 0.004 9.00 100414 Ethyl Benzene 0.160 319.00 EDF109 Glycol Ethers 0.379 758.00 67561 Methanol 0.003 5.40 108883 Toluene 1.444 2,888.00 1330207 Xylenes (Isomers And Mixture) 0.836 1,672.00 10343 Asphalt Materials Incorporated: West Jordan Asphalt Plant 71432 Benzene (Including Benzene From Gasoline) 0.047 94.00 BFQ500 Beryllium Compounds 0.000 0.01 CAE750 Cadmium Compounds 0.000 0.11 CMJ500 Chromium Compounds 0.001 1.20 CNB850 Cobalt Compounds 0.000 0.01 50000 Formaldehyde 0.352 704.00 7439921 Lead 0.000 0.16 65996932 Polycyclic aromatic hydrocarbons 0.137 274.00 106514 Quinone 0.004 8.00 11309 Asphalt Systems Incorporated: Asphalt Mixing Plant

4/20/2010 Page 26 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11309 Asphalt Systems Incorporated: Asphalt Mixing Plant 65996932 Polycyclic aromatic hydrocarbons 0.000 0.01 10377 BD Medical: Becton Dickinson and Company 540841 2,2,4-Trimethylpentane 0.043 86.00 124174 Diethylene Glycol Monobutylether A 0.007 14.00 75218 Ethylene Oxide 0.016 32.00 EDF109 Glycol Ethers 0.007 15.00 110543 Hexane 0.290 580.00 67561 Methanol 0.010 20.00 108101 Methyl Isobutyl Ketone (Hexone) 0.002 3.60 101688 Methylene Diphenyl Diisocyanate (MDI) 0.000 0.02 127184 Tetrachloroethylene (Perchloroethylene) 0.006 11.20 79016 Trichloroethylene 0.014 28.00 1330207 Xylenes (Isomers And Mixture) 0.004 7.20 10591 Blanchard Metals Processing Company CMJ500 Chromium Compounds 0.000 0.80 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.150 300.00 108101 Methyl Isobutyl Ketone (Hexone) 0.002 4.00 NDB000 Nickel Compounds 0.004 8.00 108883 Toluene 0.020 40.00 1330207 Xylenes (Isomers And Mixture) 0.020 40.00 10425 Boeing Company (The): Aircraft and Parts Manufacturing Plant 18540299 Chromium VI 0.050 100.00 7439965 Manganese (TSP) 0.010 19.20 11178 Boise Packaging & Newsprint L.L.C.: Salt Lake Corrugated Container Manufacturing 106887 1,2-Epoxybutane 0.001 1.00 7440439 Cadmium 0.000 0.06 50000 Formaldehyde 0.220 440.00 EDF109 Glycol Ethers 0.001 2.00 7439921 Lead 0.000 0.03 246 Polycyclic Organic Matter 0.000 0.10 127184 Tetrachloroethylene (Perchloroethylene) 0.040 80.00 10558 Cabinetry by Karman: Cabinet Manufacturing CMJ500 Chromium Compounds 0.005 10.22 98828 Cumene 0.001 2.88 100414 Ethyl Benzene 0.234 468.73 107211 Ethylene Glycol 0.010 20.94 50000 Formaldehyde 0.034 67.67 EDF109 Glycol Ethers 0.329 658.31 MAR500 Manganese Compounds 0.006 12.20 67561 Methanol 0.079 158.40 108101 Methyl Isobutyl Ketone (Hexone) 0.110 220.84 108883 Toluene 3.208 6,416.38

4/20/2010 Page 27 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10558 Cabinetry by Karman: Cabinet Manufacturing 121448 Triethylamine 0.000 0.51 1330207 Xylenes (Isomers And Mixture) 1.375 2,750.04 11883 Cambelt International Corp: Rubber Conveyor Systems Manufacture 71432 Benzene (Including Benzene From Gasoline) 0.000 0.01 100414 Ethyl Benzene 0.264 528.00 7439965 Manganese (TSP) 0.000 0.50 74873 Methyl Chloride (Chloromethane) 0.482 965.00 108101 Methyl Isobutyl Ketone (Hexone) 1.200 2,399.00 108883 Toluene 0.319 637.28 1330207 Xylenes (Isomers And Mixture) 0.535 1,070.02 14099 CCAM Enterprises, LLC: Wood Cabinet Manufacturing Plant 100414 Ethyl Benzene 0.119 238.00 50000 Formaldehyde 0.011 21.76 91203 Naphthalene 0.021 43.00 108883 Toluene 0.003 5.00 1330207 Xylenes (Isomers And Mixture) 0.507 1,014.00 13128 Cephalon Incorporated: Pharmaceuticals Manufacturing 50000 Formaldehyde 0.002 4.00 110543 Hexane 0.050 100.00 12495 CER Generation II, LLC: West Valley Power Plant 107028 Acrolein 0.012 23.00 71432 Benzene (Including Benzene From Gasoline) 0.022 43.30 50000 Formaldehyde 1.279 2,557.10 246 Polycyclic Organic Matter 0.004 8.00 10412 Cereal Food Processors--Salt Lake: Cereal Food Processors - Salt Lake 7439921 Lead 0.000 0.00 10556 Chevron Products Co - SLC Terminal: Salt Lake City Marketing Terminal 540841 2,2,4-Trimethylpentane 0.143 286.81 71432 Benzene (Including Benzene From Gasoline) 0.278 556.66 1319773 Cresols/Cresylic Acid (Isomers And Mixture) 0.000 0.05 98828 Cumene 0.016 31.95 100414 Ethyl Benzene 0.057 113.19 110543 Hexane 0.292 583.11 91203 Naphthalene 0.005 9.81 108883 Toluene 0.289 577.18 1330207 Xylenes (Isomers And Mixture) 0.168 336.80 11743 Compeq International Corporation: Printed Circuit Board Manufacturing 56235 Carbon Tetrachloride 0.000 0.72 50000 Formaldehyde 0.100 200.00 EDF109 Glycol Ethers 2.860 5,720.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.020 40.00 7439921 Lead 0.000 0.90

4/20/2010 Page 28 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11743 Compeq International Corporation: Printed Circuit Board Manufacturing 67561 Methanol 0.210 420.00 75092 Methylene Chloride (Dichloromethane) 0.060 120.00 7440020 Nickel 0.003 5.01 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 0.120 240.00 1330207 Xylenes (Isomers And Mixture) 0.010 20.00 10452 Cottonwood Mill & Cabinet: Cabinet Manufacturing Facility 50000 Formaldehyde 0.020 40.00 7439965 Manganese (TSP) 0.002 4.76 67561 Methanol 1.400 2,800.00 108883 Toluene 0.630 1,260.00 1330207 Xylenes (Isomers And Mixture) 1.780 3,560.00 11664 Delta Air Lines Incorporated: Delta Airlines at SLC Int'l Airport 106887 1,2-Epoxybutane 0.000 0.38 EDF109 Glycol Ethers 0.000 0.80 822060 Hexamethylene-1,6-Diisocyanate 0.005 9.29 10510 Deluxe Financial Systems: Coldset Printing Presses & Stamping CNB850 Cobalt Compounds 0.000 0.18 98828 Cumene 0.000 0.02 107211 Ethylene Glycol 0.051 102.34 EDF109 Glycol Ethers 0.030 60.00 67561 Methanol 0.001 2.41 108883 Toluene 0.001 1.00 1330207 Xylenes (Isomers And Mixture) 0.000 0.02 10365 Easton Technical Products: Tubing Manufacturing Facility EDF109 Glycol Ethers 0.070 140.00 75092 Methylene Chloride (Dichloromethane) 0.405 810.00 12115 EDO Corporation/Fiber Science Division: Fiber Science Division 100414 Ethyl Benzene 0.000 0.18 75092 Methylene Chloride (Dichloromethane) 0.004 8.26 101688 Methylene Diphenyl Diisocyanate (MDI) 0.012 23.00 108952 Phenol 0.003 6.26 100425 Styrene 0.047 94.51 108883 Toluene 0.001 1.05 1330207 Xylenes (Isomers And Mixture) 0.000 0.77 10370 Fairchild Semiconductor Corporation: Semiconductor Wafer Manufacturing Facility 7784421 Arsine 0.003 6.00 120809 Catechol 0.100 200.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 4.000 8,000.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 4.400 8,800.00 7803512 Phosphine 0.017 34.00 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 0.150 300.00 10482 Fashion Cabinet Manufacturing Inc.: Cabinet Manufacturing Facility

4/20/2010 Page 29 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10482 Fashion Cabinet Manufacturing Inc.: Cabinet Manufacturing Facility 100414 Ethyl Benzene 0.780 1,560.00 50000 Formaldehyde 0.040 80.00 EDF109 Glycol Ethers 0.020 40.00 67561 Methanol 0.190 380.00 108883 Toluene 2.260 4,520.00 1330207 Xylenes (Isomers And Mixture) 2.080 4,160.00 13043 Fetzer's Incorporated: West Valley Woodworking Plant 7440484 Cobalt (TSP) 0.001 1.54 50000 Formaldehyde 0.240 480.00 EDF109 Glycol Ethers 0.025 50.00 7439921 Lead 0.000 0.01 67561 Methanol 0.082 164.00 108883 Toluene 0.340 680.00 1330207 Xylenes (Isomers And Mixture) 0.680 1,360.00 11297 Frito-Lay, Inc.: Salty Snack Food Manufacturing Plant 7440439 Cadmium 0.000 0.20 50000 Formaldehyde 0.006 12.00 7439921 Lead 0.000 0.08 246 Polycyclic Organic Matter 0.000 0.02 11798 G & K Services Incorporated: Industrial Laundry THAPS Total HAPs 6.670 13,340.00 11792 G-L Industries, Inc.: Laminated Wood Beam Manufacturing Plant 107211 Ethylene Glycol 0.880 1,760.00 50000 Formaldehyde 0.340 680.00 67561 Methanol 0.880 1,760.00 108952 Phenol 3.850 7,700.00 11768 Geneva Rock Products: Bacchus Pit 106990 1,3-Butadiene 0.000 0.03 83329 Acenaphthene(TSP) 0.000 0.01 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.58 107028 Acrolein 0.000 0.07 120127 Anthracene 0.000 0.00 71432 Benzene (Including Benzene From Gasoline) 0.000 0.71 56553 Benzo(A)Anthracene 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.01 50000 Formaldehyde 0.000 0.89 91203 Naphthalene 0.000 0.06 85018 Phenanthrene 0.000 0.02 246 Polycyclic Organic Matter 0.000 0.15 129000 Pyrene 0.000 0.00 108883 Toluene 0.000 0.31

4/20/2010 Page 30 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11768 Geneva Rock Products: Bacchus Pit 1330207 Xylenes (Isomers And Mixture) 0.000 0.22 12776 Geneva Rock Products: Mount Jordan Operations 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.01 107028 Acrolein 0.000 0.00 71432 Benzene (Including Benzene From Gasoline) 0.000 0.12 50000 Formaldehyde 0.000 0.03 91203 Naphthalene 0.000 0.02 85018 Phenanthrene 0.000 0.01 246 Polycyclic Organic Matter 0.000 0.03 108883 Toluene 0.000 0.05 1330207 Xylenes (Isomers And Mixture) 0.000 0.03 10565 Geneva Rock Products: Point of the Mountain (Hansen-Lehi) Facility 540841 2,2,4-Trimethylpentane 0.009 17.16 75070 Acetaldehyde 0.273 546.00 107028 Acrolein 0.005 10.98 7440382 Arsenic (TSP) 0.000 0.25 71432 Benzene (Including Benzene From Gasoline) 0.087 175.00 7440439 Cadmium 0.000 0.18 CMJ500 Chromium Compounds 0.000 0.19 50000 Formaldehyde 1.880 3,760.00 7439921 Lead 0.003 6.32 22967926 Mercury (Organic) 0.001 1.09 7723140 Phosphorus 0.006 12.06 246 Polycyclic Organic Matter 0.198 396.00 123386 Propionaldehyde 0.027 54.60 106514 Quinone 0.034 67.20 108883 Toluene 0.614 1,228.00 10407 Granite Construction Company: Cottonwood Facility 540841 2,2,4-Trimethylpentane 0.010 19.32 83329 Acenaphthene(TSP) 0.000 0.72 208968 Acenaphthylene(TSP) 0.002 4.22 75070 Acetaldehyde 0.002 4.25 107028 Acrolein 0.000 0.05 120127 Anthracene 0.000 0.12 7440360 Antimony (TSP) 0.000 0.09 7440382 Arsenic (TSP) 0.000 0.28 71432 Benzene (Including Benzene From Gasoline) 0.099 197.19 205992 Benzo (B) Fluoranthene 0.000 0.06 207089 Benzo (K) Fluoranthene 0.000 0.02 56553 Benzo(A)Anthracene 0.000 0.10 192972 Benzo(E)Pyrene/Tsp 0.000 0.05 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.02

4/20/2010 Page 31 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10407 Granite Construction Company: Cottonwood Facility 7440439 Cadmium 0.000 0.21 CMJ500 Chromium Compounds 0.001 2.89 218019 Chrysene (TSP) 0.000 0.10 7440484 Cobalt (TSP) 0.000 0.01 100414 Ethyl Benzene 0.072 143.94 206440 Fluoranthene (TSP) 0.000 0.32 50000 Formaldehyde 0.754 1,507.17 110543 Hexane 0.222 444.26 7439921 Lead 0.000 0.31 7439965 Manganese (TSP) 0.002 3.81 22967926 Mercury (Organic) 0.000 0.13 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.012 23.18 91203 Naphthalene 0.022 44.81 7440020 Nickel 0.015 30.46 85018 Phenanthrene 0.002 3.98 7723140 Phosphorus 0.007 13.52 246 Polycyclic Organic Matter 0.019 38.95 129000 Pyrene 0.000 0.29 106514 Quinone 0.002 3.44 253 Selenium & Compounds 0.000 0.18 108883 Toluene 0.044 87.10 1330207 Xylenes (Isomers And Mixture) 0.066 132.34 10580 Hallmark Cabinet Company: Wood Cabinet and Furniture Manufacturing Plant CNB850 Cobalt Compounds 0.000 0.06 98828 Cumene 0.013 26.36 100414 Ethyl Benzene 0.255 510.76 50000 Formaldehyde 0.009 18.82 67561 Methanol 0.962 1,923.96 108101 Methyl Isobutyl Ketone (Hexone) 0.475 949.96 108883 Toluene 3.597 7,193.62 1330207 Xylenes (Isomers And Mixture) 1.548 3,096.40 12088 Hanson Structural Precast Eagle: Precast/Prestress Concrete Manufacturing Facility 106990 1,3-Butadiene 0.003 6.00 75070 Acetaldehyde 0.064 128.00 107028 Acrolein 0.008 16.00 7440382 Arsenic (TSP) 0.000 0.14 71432 Benzene (Including Benzene From Gasoline) 0.467 934.00 7440417 Beryllium (TSP) 0.000 0.01 7440439 Cadmium 0.000 0.09 CMJ500 Chromium Compounds 0.000 0.41 7440484 Cobalt (TSP) 0.000 0.01 25321226 Dichlorobenzene 0.000 0.27 50000 Formaldehyde 0.102 204.00

4/20/2010 Page 32 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 12088 Hanson Structural Precast Eagle: Precast/Prestress Concrete Manufacturing Facility 110543 Hexane 0.663 1,326.00 7439921 Lead 0.000 0.11 7439965 Manganese (TSP) 0.001 2.00 22967926 Mercury (Organic) 0.000 0.02 91203 Naphthalene 0.000 0.22 7440020 Nickel 0.000 0.57 7723140 Phosphorus 0.001 2.00 65996932 Polycyclic aromatic hydrocarbons 0.001 2.00 246 Polycyclic Organic Matter 0.000 0.01 253 Selenium & Compounds 0.000 0.02 108883 Toluene 0.929 1,858.00 1330207 Xylenes (Isomers And Mixture) 0.465 930.00 12394 Harman Music: Audio Components Manufacturing 100414 Ethyl Benzene 0.010 20.00 822060 Hexamethylene-1,6-Diisocyanate 0.000 0.17 67561 Methanol 0.040 80.00 108101 Methyl Isobutyl Ketone (Hexone) 0.001 1.32 108952 Phenol 0.002 3.03 100425 Styrene 0.000 0.73 108883 Toluene 0.030 60.00 10569 Harper Contracting, Inc.: Pit #10 540841 2,2,4-Trimethylpentane 0.007 14.20 7440382 Arsenic (TSP) 0.000 0.40 71432 Benzene (Including Benzene From Gasoline) 0.072 144.40 7440439 Cadmium 0.000 0.98 18540299 Chromium VI 0.000 0.10 7440484 Cobalt (TSP) 0.002 3.20 50000 Formaldehyde 0.554 1,108.00 7439921 Lead 0.058 115.00 7439965 Manganese (TSP) 0.070 140.00 7440020 Nickel 0.145 290.00 7723140 Phosphorus 0.131 262.00 108883 Toluene 0.320 640.00 13102 Harper Contracting: Aggregate Processing & Concrete Plant - Daybreak 50000 Formaldehyde 0.003 6.00 11557 Harper Contracting: Pit #5 - Salt Lake County 75070 Acetaldehyde 0.000 0.05 107028 Acrolein 0.000 0.02 71432 Benzene (Including Benzene From Gasoline) 0.001 1.66 50000 Formaldehyde 0.000 0.17 108883 Toluene 0.000 0.60 1330207 Xylenes (Isomers And Mixture) 0.000 0.41

4/20/2010 Page 33 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11386 Hexcel Corporation: Salt Lake Operations 143339 Cyanide Compounds 18.700 37,400.00 68122 Dimethyl Formamide 0.930 1,860.00 100414 Ethyl Benzene 0.014 28.00 EDF109 Glycol Ethers 0.097 194.00 110543 Hexane 0.001 2.00 75092 Methylene Chloride (Dichloromethane) 0.910 1,820.00 108883 Toluene 0.014 28.00 1330207 Xylenes (Isomers And Mixture) 2.896 5,792.00 10426 Hudson Printing Company: Hudson Printing 7439921 Lead 0.000 0.01 11644 ICU Medical, Inc.: Salt Lake Medical Products Manufacturing 7439921 Lead 0.000 0.18 10477 Intercon Incorporated: Wood Furniture Mfg. Facility 100414 Ethyl Benzene 0.110 220.00 50000 Formaldehyde 0.010 20.00 MAR500 Manganese Compounds 0.010 20.00 67561 Methanol 0.040 80.00 108883 Toluene 0.360 720.00 1330207 Xylenes (Isomers And Mixture) 0.520 1,040.00 12943 Intermountain Health Care: New McKay Dee Hospital in Ogden 75218 Ethylene Oxide 0.000 0.11 11150 Interstate Brands West Corporation: Interstate Brands Company - Salt Lake 7439921 Lead 0.000 0.02 67561 Methanol 0.830 1,660.00 10423 Interstate Brick Company: Brick Manufacturing Plant 106467 1,4-Dichlorobenzene(P) 0.002 3.56 540841 2,2,4-Trimethylpentane 0.001 1.43 7440360 Antimony (TSP) 0.000 0.01 7440382 Arsenic (TSP) 0.005 9.68 71432 Benzene (Including Benzene From Gasoline) 0.108 216.00 7440417 Beryllium (TSP) 0.001 1.18 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.074 148.00 7440439 Cadmium 0.000 0.01 75150 Carbon Disulfide 0.002 3.18 7782505 Chlorine 0.048 96.00 CMJ500 Chromium Compounds 0.000 0.02 7440484 Cobalt (TSP) 0.000 0.01 98828 Cumene 0.000 0.02 25321226 Dichlorobenzene 0.000 0.01 100414 Ethyl Benzene 0.002 3.56 75003 Ethyl Chloride (Chloroethane) 0.021 42.20 50000 Formaldehyde 0.000 0.82

4/20/2010 Page 34 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10423 Interstate Brick Company: Brick Manufacturing Plant 110543 Hexane 0.010 19.06 7647010 Hydrochloric Acid (Hydrogen Chloride) 1.860 3,720.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 1.080 2,160.00 7439921 Lead 0.000 0.01 7439965 Manganese (TSP) 0.011 21.40 22967926 Mercury (Organic) 0.004 7.10 74873 Methyl Chloride (Chloromethane) 0.025 49.60 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.000 0.35 74884 Methyl Iodide (Iodomethane) 0.003 6.88 91203 Naphthalene 0.002 4.82 7440020 Nickel 0.000 0.22 108952 Phenol 0.003 6.36 253 Selenium & Compounds 0.000 0.00 100425 Styrene 0.001 1.48 127184 Tetrachloroethylene (Perchloroethylene) 0.000 0.21 108883 Toluene 0.007 14.44 1330207 Xylenes (Isomers And Mixture) 0.006 12.24 12224 Jack's Tire and Oil Incorporated: Tire Retreading Facility - Salt Lake City 96128 1,2-Dibromo-3-Chloropropane 0.001 1.10 540841 2,2,4-Trimethylpentane 0.004 8.92 CAE750 Cadmium Compounds 0.000 0.70 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.005 10.02 CMJ500 Chromium Compounds 0.001 1.24 132649 Dibenzofurans 0.000 0.16 LCT000 Lead Compounds 0.001 1.66 10501 Kennecott Barneys Canyon Mining Company: Barney's Canyon Mine 143339 Cyanide Compounds 0.440 880.00 10571 Kennecott Utah Copper LLC.: Mine & Copperton Concentrator ADQ500 Antimony Compounds 0.007 14.68 ARF750 Arsenic Compounds 0.097 193.04 71432 Benzene (Including Benzene From Gasoline) 0.069 137.20 BFQ500 Beryllium Compounds 0.003 5.70 CAE750 Cadmium Compounds 0.002 4.10 CMJ500 Chromium Compounds 0.040 79.24 CNB850 Cobalt Compounds 0.021 42.26 LCT000 Lead Compounds 0.578 1,155.14 MAR500 Manganese Compounds 0.502 1,003.64 EDF033 Mercury Compounds 0.000 0.64 226 Nickel & Compounds 0.055 110.94 253 Selenium & Compounds 0.023 45.66 10572 Kennecott Utah Copper LLC.: Power Plant/ Lab/ Tailings Impoundment 107028 Acrolein 0.063 125.40 ADQ500 Antimony Compounds 0.001 1.40

4/20/2010 Page 35 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10572 Kennecott Utah Copper LLC.: Power Plant/ Lab/ Tailings Impoundment ARF750 Arsenic Compounds 0.005 9.20 71432 Benzene (Including Benzene From Gasoline) 0.000 0.10 100447 Benzyl Chloride 0.151 302.70 CAE750 Cadmium Compounds 0.002 4.54 CMJ500 Chromium Compounds 0.022 43.69 143339 Cyanide Compounds 0.540 1,081.00 50000 Formaldehyde 0.101 202.65 7647010 Hydrochloric Acid (Hydrogen Chloride) 2.750 5,500.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 1.240 2,480.00 7439921 Lead 0.099 198.00 LCT000 Lead Compounds 0.011 21.12 MAR500 Manganese Compounds 0.039 78.05 EDF033 Mercury Compounds 0.026 52.08 60344 Methyl Hydrazine 0.024 47.90 226 Nickel & Compounds 0.018 36.10 123386 Propionaldehyde 0.082 164.20 253 Selenium & Compounds 0.057 113.42 10346 Kennecott Utah Copper LLC: Smelter & Refinery 7440360 Antimony (TSP) 0.074 147.99 7440382 Arsenic (TSP) 1.958 3,916.97 ARF750 Arsenic Compounds 0.011 21.00 BFQ500 Beryllium Compounds 0.003 6.41 7440439 Cadmium 0.000 0.04 CAE750 Cadmium Compounds 0.065 129.06 CMJ500 Chromium Compounds 0.139 278.53 16065831 Chromium III 0.000 0.27 CNB850 Cobalt Compounds 0.064 128.26 50000 Formaldehyde 0.005 9.33 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.055 109.00 7439921 Lead 0.001 1.34 LCT000 Lead Compounds 3.118 6,235.40 MAR500 Manganese Compounds 0.064 128.55 22967926 Mercury (Organic) 0.000 0.01 EDF033 Mercury Compounds 0.005 9.16 226 Nickel & Compounds 0.099 198.78 253 Selenium & Compounds 0.149 298.30 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 23.086 46,171.08 12596 Kern River Gas Transmission Company: Salt Lake City Compressor Station 106990 1,3-Butadiene 0.000 0.10 540841 2,2,4-Trimethylpentane 0.000 0.09 75070 Acetaldehyde 0.021 41.42 107028 Acrolein 0.001 1.87 71432 Benzene (Including Benzene From Gasoline) 0.006 11.70

4/20/2010 Page 36 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 12596 Kern River Gas Transmission Company: Salt Lake City Compressor Station 92524 Biphenyl 0.000 0.08 25321226 Dichlorobenzene 0.000 0.01 100414 Ethyl Benzene 0.015 30.72 50000 Formaldehyde 0.351 701.41 110543 Hexane 0.011 21.18 67561 Methanol 0.000 0.91 108883 Toluene 0.062 124.94 1330207 Xylenes (Isomers And Mixture) 0.031 61.48 10449 LDS Church Printing Center: Salt Lake Printing Center - LDS Church 107211 Ethylene Glycol 0.130 260.00 10578 LDS Church: LDS Central Heating Plant 7439921 Lead 0.000 0.12 13306 Macrotech Polyseal: Seals Manufacturer 75150 Carbon Disulfide 0.040 80.00 100414 Ethyl Benzene 0.280 560.00 50000 Formaldehyde 0.010 20.00 67561 Methanol 0.190 380.00 91203 Naphthalene 0.170 340.00 108952 Phenol 0.090 180.00 108883 Toluene 0.050 100.00 1330207 Xylenes (Isomers And Mixture) 1.310 2,620.00 11392 Mark Steel Corporation: Jordan Steel Equipment Manufacturing Plant 120821 1,2,4-Trichlorobenzene 0.010 20.00 CMJ500 Chromium Compounds 0.001 2.60 100414 Ethyl Benzene 0.300 600.00 7439921 Lead 0.000 0.01 7439965 Manganese (TSP) 0.013 26.24 67561 Methanol 0.040 80.00 108101 Methyl Isobutyl Ketone (Hexone) 0.070 140.00 7440020 Nickel 0.000 0.26 108883 Toluene 0.310 620.00 1330207 Xylenes (Isomers And Mixture) 0.730 1,460.00 12740 Marko Foam Products: Packaging & Other Foam Products Manufacturing 7439921 Lead 0.000 0.01 65996932 Polycyclic aromatic hydrocarbons 0.000 0.01 13060 Masco Retail Cabinet Group LLC: Cabinet Manufacturing Plant 111900 Diethylene Glycol Monoethyl Ether 0.023 46.00 100414 Ethyl Benzene 0.273 546.00 50000 Formaldehyde 0.000 0.40 EDF109 Glycol Ethers 0.006 12.00 108101 Methyl Isobutyl Ketone (Hexone) 0.006 12.60 108883 Toluene 1.010 2,020.00

4/20/2010 Page 37 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 13060 Masco Retail Cabinet Group LLC: Cabinet Manufacturing Plant 1330207 Xylenes (Isomers And Mixture) 1.190 2,380.00 10380 Materials Packaging Corporation: Dry Mix Cement Plant 65996932 Polycyclic aromatic hydrocarbons 0.000 0.13 10557 Moog Aircraft Group: Montek Company - Salt Lake Operations CMJ500 Chromium Compounds 0.000 0.80 98828 Cumene 0.000 0.15 100414 Ethyl Benzene 0.001 1.40 7439921 Lead 0.000 0.35 108101 Methyl Isobutyl Ketone (Hexone) 0.018 36.00 108883 Toluene 0.046 92.00 1330207 Xylenes (Isomers And Mixture) 0.180 360.00 13150 Newspaper Agency Corp (MediaOne): 4770 South 5600 West 98828 Cumene 0.232 464.00 1330207 Xylenes (Isomers And Mixture) 0.232 464.00 10512 O.C. Tanner Company: O.C. Tanner Manufacturing Facility 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.020 40.00 7439921 Lead 0.050 100.00 10562 Olympia Sales Company: Cabinet Manufacturing Facility 100414 Ethyl Benzene 0.167 334.60 50000 Formaldehyde 0.043 86.16 EDF109 Glycol Ethers 0.000 0.18 67561 Methanol 0.528 1,056.00 108101 Methyl Isobutyl Ketone (Hexone) 0.035 69.80 108883 Toluene 0.397 793.02 1330207 Xylenes (Isomers And Mixture) 0.747 1,494.88 10033 Owens Corning: Western Fiberglass - Salt Lake City Plant 50000 Formaldehyde 0.970 1,940.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.050 100.00 67561 Methanol 1.430 2,860.00 108952 Phenol 0.700 1,400.00 10355 Pacificorp: Gadsby Power Plant 107028 Acrolein 0.006 11.04 7440382 Arsenic (TSP) 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.011 21.62 7440439 Cadmium 0.000 0.39 CMJ500 Chromium Compounds 0.000 0.50 50000 Formaldehyde 0.625 1,249.60 110543 Hexane 0.323 646.00 7439921 Lead 0.001 1.56 234 PAH, Total 0.002 3.82 11477 Questar Gas: North Operations Center 107028 Acrolein 0.050 100.00

4/20/2010 Page 38 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11477 Questar Gas: North Operations Center 71432 Benzene (Including Benzene From Gasoline) 0.070 140.00 50000 Formaldehyde 1.080 2,160.00 10450 Salt Lake City Department of Airports: Salt Lake City International Airport 71432 Benzene (Including Benzene From Gasoline) 0.000 0.18 CMJ500 Chromium Compounds 0.000 0.12 50000 Formaldehyde 0.003 6.00 110543 Hexane 0.070 140.00 7440020 Nickel 0.000 0.18 108883 Toluene 0.000 0.29 11295 Salt Lake County: Salt Palace 106990 1,3-Butadiene 0.000 0.00 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.04 107028 Acrolein 0.000 0.01 120127 Anthracene 0.000 0.00 7440382 Arsenic (TSP) 0.000 0.10 71432 Benzene (Including Benzene From Gasoline) 0.001 1.10 7440417 Beryllium (TSP) 0.000 0.01 7440439 Cadmium 0.000 0.55 CMJ500 Chromium Compounds 0.000 0.70 7440484 Cobalt (TSP) 0.000 0.04 25321226 Dichlorobenzene 0.000 0.60 206440 Fluoranthene (TSP) 0.000 0.00 50000 Formaldehyde 0.019 37.80 110543 Hexane 0.452 904.00 7439965 Manganese (TSP) 0.000 0.19 22967926 Mercury (Organic) 0.000 0.13 91203 Naphthalene 0.000 0.31 7440020 Nickel 0.001 1.05 85018 Phenanthrene 0.000 0.01 246 Polycyclic Organic Matter 0.000 0.02 129000 Pyrene 0.000 0.00 253 Selenium & Compounds 0.000 0.01 108883 Toluene 0.001 1.73 1330207 Xylenes (Isomers And Mixture) 0.000 0.02 13104 Salt Lake Energy Systems LLC: Power Plant at Salt Lake Valley Landfill 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.003 6.00 50000 Formaldehyde 0.135 270.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 3.190 6,380.00 108883 Toluene 0.347 694.00 75014 Vinyl Chloride 0.022 44.00 11599 SME Steel Contractors: Steel Fabrication Facility 100414 Ethyl Benzene 0.700 1,400.00

4/20/2010 Page 39 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11599 SME Steel Contractors: Steel Fabrication Facility 108101 Methyl Isobutyl Ketone (Hexone) 0.090 180.00 108883 Toluene 0.410 820.00 1330207 Xylenes (Isomers And Mixture) 2.870 5,740.00 11983 Sorensen Sand and Gravel: West Jordan Sand & Gravel Processing 65996932 Polycyclic aromatic hydrocarbons 0.001 1.48 11685 St. George Steel Division: Express Metal Fabrications Inc. 100414 Ethyl Benzene 0.340 680.00 67561 Methanol 0.165 330.00 1330207 Xylenes (Isomers And Mixture) 1.370 2,740.00 13099 Staker & Parson Companies: Beck Street Aggregate, Asphalt, & Concrete Production 95954 2,4,5-Trichlorophenol 0.015 30.20 75070 Acetaldehyde 0.491 982.00 107028 Acrolein 0.010 19.60 7440382 Arsenic (TSP) 0.000 0.42 71432 Benzene (Including Benzene From Gasoline) 0.147 295.00 7440439 Cadmium 0.000 0.31 CMJ500 Chromium Compounds 0.002 4.50 7440484 Cobalt (TSP) 0.000 0.02 100414 Ethyl Benzene 0.090 181.00 50000 Formaldehyde 1.170 2,340.00 110543 Hexane 0.347 695.00 7439921 Lead 0.006 11.30 7439965 Manganese (TSP) 0.003 5.82 22967926 Mercury (Organic) 0.001 1.96 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.018 36.30 91203 Naphthalene 0.246 491.00 7440020 Nickel 0.024 47.60 7723140 Phosphorus 0.011 21.20 65996932 Polycyclic aromatic hydrocarbons 0.088 177.00 123386 Propionaldehyde 0.049 98.20 106514 Quinone 0.060 121.00 253 Selenium & Compounds 0.000 0.26 108883 Toluene 1.095 2,190.00 1330207 Xylenes (Isomers And Mixture) 0.075 151.00 11234 Staker & Parson Companies: Point East Facility 540841 2,2,4-Trimethylpentane 0.004 7.17 75070 Acetaldehyde 0.117 233.00 107028 Acrolein 0.002 4.66 7440382 Arsenic (TSP) 0.000 0.10 71432 Benzene (Including Benzene From Gasoline) 0.035 69.90 7440439 Cadmium 0.000 0.07 CMJ500 Chromium Compounds 0.001 1.07 7440484 Cobalt (TSP) 0.000 0.00

4/20/2010 Page 40 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11234 Staker & Parson Companies: Point East Facility 100414 Ethyl Benzene 0.021 43.00 50000 Formaldehyde 0.278 555.00 110543 Hexane 0.083 165.00 7439921 Lead 0.001 2.69 7439965 Manganese (TSP) 0.001 1.38 22967926 Mercury (Organic) 0.000 0.47 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.004 8.60 91203 Naphthalene 0.058 116.00 7440020 Nickel 0.006 11.30 7723140 Phosphorus 0.003 5.02 65996932 Polycyclic aromatic hydrocarbons 0.021 42.10 123386 Propionaldehyde 0.012 23.30 106514 Quinone 0.014 28.70 253 Selenium & Compounds 0.000 0.06 108883 Toluene 0.260 520.00 1330207 Xylenes (Isomers And Mixture) 0.018 35.80 10463 Sun Products Corp.: Detergent Manufacturing 67663 Chloroform 0.200 400.00 67561 Methanol 0.178 356.00 10335 Tesoro: Salt Lake City Refinery 540841 2,2,4-Trimethylpentane 5.868 11,736.24 75070 Acetaldehyde 0.270 539.26 107028 Acrolein 0.117 233.77 7440382 Arsenic (TSP) 0.002 3.48 71432 Benzene (Including Benzene From Gasoline) 7.885 15,770.52 BFQ500 Beryllium Compounds 0.001 1.10 92524 Biphenyl 0.074 148.29 CAE750 Cadmium Compounds 0.001 2.58 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.017 34.00 CMJ500 Chromium Compounds 0.003 5.23 18540299 Chromium VI 0.000 0.84 CNB850 Cobalt Compounds 0.003 6.26 100414 Ethyl Benzene 1.049 2,098.16 50000 Formaldehyde 1.627 3,253.01 110543 Hexane 17.197 34,394.48 7647010 Hydrochloric Acid (Hydrogen Chloride) 7.694 15,387.56 74908 Hydrogen Cyanide (Hydrocyanic Acid) 4.268 8,535.74 7439921 Lead 0.010 20.60 MAR500 Manganese Compounds 0.031 62.22 22967926 Mercury (Organic) 0.005 10.00 226 Nickel & Compounds 0.129 257.29 65996932 Polycyclic aromatic hydrocarbons 0.012 23.10 253 Selenium & Compounds 0.011 21.14

4/20/2010 Page 41 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 10335 Tesoro: Salt Lake City Refinery 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 33.480 66,959.87 108883 Toluene 15.754 31,507.17 1330207 Xylenes (Isomers And Mixture) 7.612 15,225.00 13321 Third Dimension, Inc.: Packaging Products Manufacturing Plant 100414 Ethyl Benzene 0.002 3.60 7439921 Lead 0.000 0.01 10405 TOSH (The Orthopedic Specialty Hospital) 7440382 Arsenic (TSP) 0.000 0.02 71432 Benzene (Including Benzene From Gasoline) 0.000 0.12 7440439 Cadmium 0.000 0.06 16065831 Chromium III 0.000 0.08 25321226 Dichlorobenzene 0.000 0.08 50000 Formaldehyde 0.002 4.60 110543 Hexane 0.055 110.00 7439965 Manganese (TSP) 0.000 0.02 22967926 Mercury (Organic) 0.000 0.02 91203 Naphthalene 0.000 0.04 7440020 Nickel 0.000 0.12 108883 Toluene 0.000 0.20 11977 Trans-Jordan Cities: Trans-Jordan Landfill 107131 Acrylonitrile 0.062 124.00 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.006 12.00 106934 Ethylene Dibromide (Dibromoethane) 0.000 0.07 75014 Vinyl Chloride 0.021 42.00 10354 University of Utah: University of Utah facilities 7439921 Lead 0.000 0.68 11277 Utah Air National Guard: Utah Air National Guard at SLC Int'l Airport 106990 1,3-Butadiene 0.000 0.03 75070 Acetaldehyde 0.001 1.77 107028 Acrolein 0.000 0.53 7440382 Arsenic (TSP) 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.000 0.71 7440439 Cadmium 0.000 0.04 CMJ500 Chromium Compounds 0.000 0.05 7440484 Cobalt (TSP) 0.000 0.00 100414 Ethyl Benzene 0.000 0.07 206440 Fluoranthene (TSP) 0.000 0.00 50000 Formaldehyde 0.002 3.45 110543 Hexane 0.032 63.55 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.000 0.91 7439921 Lead 0.001 1.14 7439965 Manganese (TSP) 0.000 0.05

4/20/2010 Page 42 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Salt Lake 11277 Utah Air National Guard: Utah Air National Guard at SLC Int'l Airport 22967926 Mercury (Organic) 0.000 0.01 91203 Naphthalene 0.000 0.08 7440020 Nickel 0.000 0.10 253 Selenium & Compounds 0.000 0.01 108883 Toluene 0.007 13.23 1330207 Xylenes (Isomers And Mixture) 0.000 0.27 10358 Varian Medical Systems: X-Ray Products Manufacturing Plant 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.088 176.00 67561 Methanol 4.745 9,490.00 108883 Toluene 1.174 2,348.00 79016 Trichloroethylene 0.010 20.00 12197 Vertis Incorporated: Printing Press - Crossroads Corporate Center EDF109 Glycol Ethers 0.780 1,560.00 91203 Naphthalene 0.030 60.00 1330207 Xylenes (Isomers And Mixture) 0.010 20.00 10552 Veterans Affairs Medical Center: Veterans Affairs Medical Center 75218 Ethylene Oxide 0.037 74.00 10517 Watson Laboratories Incorporated: Pharmaceutical Manufacturing Facility 50000 Formaldehyde 0.004 8.00 10555 Weir Slurry Group, Inc.: Rubber Engineering Facility 100414 Ethyl Benzene 0.471 943.00 50000 Formaldehyde 0.005 10.00 7439921 Lead 0.126 252.40 108101 Methyl Isobutyl Ketone (Hexone) 0.801 1,603.00 101688 Methylene Diphenyl Diisocyanate (MDI) 3.910 7,819.00 127184 Tetrachloroethylene (Perchloroethylene) 0.559 1,117.00 108883 Toluene 18.145 36,289.00 79016 Trichloroethylene 1.292 2,584.00 1330207 Xylenes (Isomers And Mixture) 1.573 3,146.00 10508 Weir Specialty Pumps: Pump Shop 100414 Ethyl Benzene 0.357 714.00 822060 Hexamethylene-1,6-Diisocyanate 0.012 24.00 108101 Methyl Isobutyl Ketone (Hexone) 1.079 2,157.00 91203 Naphthalene 0.102 203.00 108883 Toluene 0.328 655.00 1330207 Xylenes (Isomers And Mixture) 1.227 2,454.00 San Juan 11205 Denison Mines (USA) Corp.: White Mesa Mill 50000 Formaldehyde 0.007 14.90 10034 EnCana Oil & Gas (USA) Incorporated: Lisbon Natural Gas Processing Plant 71432 Benzene (Including Benzene From Gasoline) 1.028 2,056.00

4/20/2010 Page 43 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) San Juan 10034 EnCana Oil & Gas (USA) Incorporated: Lisbon Natural Gas Processing Plant 110543 Hexane 5.024 10,048.20 7439921 Lead 0.000 0.29 108883 Toluene 0.387 774.80 11462 Lisbon Valley Mining Company LLC: Lisbon Valley Open Pit Copper Mine 7786814 Sulfuric Acid, Nickel(2+) Salt (1: 3.920 7,840.00 10632 Mid-America Pipeline Company: Lisbon Natural Gas Pumping Station 75070 Acetaldehyde 0.241 482.00 107028 Acrolein 0.004 8.00 71432 Benzene (Including Benzene From Gasoline) 0.007 14.00 50000 Formaldehyde 0.235 470.00 10264 Mid-America Pipeline Company: Moab Station 75070 Acetaldehyde 0.255 510.00 107028 Acrolein 0.004 8.00 71432 Benzene (Including Benzene From Gasoline) 0.008 16.00 50000 Formaldehyde 0.249 498.00 10627 Northwest Pipeline GP: Moab Compressor Station 50000 Formaldehyde 1.166 2,332.00 Sanpete 10648 Central Utah Correctional Facility: Gunnison Correctional Facility 75070 Acetaldehyde 0.000 0.04 71432 Benzene (Including Benzene From Gasoline) 0.001 2.60 CAE750 Cadmium Compounds 0.000 0.08 50000 Formaldehyde 0.003 6.00 110543 Hexane 0.070 140.00 91203 Naphthalene 0.000 0.40 108883 Toluene 0.000 0.80 1330207 Xylenes (Isomers And Mixture) 0.000 0.60 11703 George W. Johansen Construction Co.: Johansen Sand and Gravel 540841 2,2,4-Trimethylpentane 0.000 0.64 CMJ500 Chromium Compounds 0.000 0.10 50000 Formaldehyde 0.026 51.60 7439921 Lead 0.000 0.01 10645 Western Rock Products Corporation: Centerfield Asphalt Plant 540841 2,2,4-Trimethylpentane 0.001 2.19 75070 Acetaldehyde 0.036 71.30 107028 Acrolein 0.001 1.43 7440382 Arsenic (TSP) 0.000 0.03 71432 Benzene (Including Benzene From Gasoline) 0.011 21.40 7440439 Cadmium 0.000 0.02 CMJ500 Chromium Compounds 0.000 0.33 7440484 Cobalt (TSP) 0.000 0.00 100414 Ethyl Benzene 0.007 13.20

4/20/2010 Page 44 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Sanpete 10645 Western Rock Products Corporation: Centerfield Asphalt Plant 50000 Formaldehyde 0.085 170.00 110543 Hexane 0.025 50.40 7439921 Lead 0.000 0.82 7439965 Manganese (TSP) 0.000 0.42 22967926 Mercury (Organic) 0.000 0.14 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.001 2.63 91203 Naphthalene 0.018 35.60 7440020 Nickel 0.002 3.45 7723140 Phosphorus 0.001 1.53 65996932 Polycyclic aromatic hydrocarbons 0.006 12.90 123386 Propionaldehyde 0.004 7.13 106514 Quinone 0.004 8.77 253 Selenium & Compounds 0.000 0.02 108883 Toluene 0.080 159.00 1330207 Xylenes (Isomers And Mixture) 0.005 11.00 Sevier 10665 Canyon Fuel Company LLC: SUFCO (Salina Canyon Coal Mine) 50000 Formaldehyde 1.450 2,900.00 10654 United States Gypsum Company: Sigurd Plant 50000 Formaldehyde 0.450 900.00 110543 Hexane 0.160 320.00 Summit 10695 Geary Construction Incorporated: Wanship Pit 65996932 Polycyclic aromatic hydrocarbons 0.001 2.00 10681 Rocky Mountain Pipeline System LLC: Anschutz Station (Frontier) 71432 Benzene (Including Benzene From Gasoline) 0.030 60.00 100414 Ethyl Benzene 0.010 20.00 110543 Hexane 0.030 60.00 108883 Toluene 0.020 40.00 1330207 Xylenes (Isomers And Mixture) 0.020 40.00 10677 Rocky Mountain Pipeline System LLC: Wahsatch Station 71432 Benzene (Including Benzene From Gasoline) 0.030 60.00 100414 Ethyl Benzene 0.010 20.00 110543 Hexane 0.030 60.00 108883 Toluene 0.040 80.00 1330207 Xylenes (Isomers And Mixture) 0.050 100.00 10676 Utelite Corporation: Shale Processing 7440382 Arsenic (TSP) 0.034 68.00 7440417 Beryllium (TSP) 0.024 48.00 7440439 Cadmium 0.008 16.00 CMJ500 Chromium Compounds 0.442 884.00 50000 Formaldehyde 0.005 10.00

4/20/2010 Page 45 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Summit 10676 Utelite Corporation: Shale Processing 7647010 Hydrochloric Acid (Hydrogen Chloride) 5.297 10,594.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 1.558 3,116.00 7439921 Lead 0.153 306.35 7439965 Manganese (TSP) 0.382 764.00 7439976 Mercury (TSP) 0.005 10.00 7440020 Nickel 0.380 760.00 10679 Whiting Oil and Gas Corporation: Bridger Lake Plant 50000 Formaldehyde 5.230 10,460.00 Tooele 10722 Cargill Incorporated--Salt Division: Timpie Salt Processing Plant 107028 Acrolein 0.002 4.00 7440439 Cadmium 0.000 0.15 50000 Formaldehyde 0.014 28.00 7439921 Lead 0.000 0.07 65996932 Polycyclic aromatic hydrocarbons 0.002 4.00 10725 Clean Harbors Aragonite LLC: Hazardous Waste Storage/Incineration 62533 Aniline 0.000 0.10 7440360 Antimony (TSP) 0.000 0.04 7440417 Beryllium (TSP) 0.014 28.00 7440439 Cadmium 0.000 0.06 143339 Cyanide Compounds 0.000 0.04 84742 Dibutylphthalate 0.000 0.10 68122 Dimethyl Formamide 0.000 0.42 50000 Formaldehyde 0.033 66.00 EDF109 Glycol Ethers 0.000 0.05 72435 Methoxychlor 0.000 0.00 74839 Methyl Bromide (Bromomethane) 0.000 0.10 1634044 Methyl Tert Butyl Ether 0.000 0.04 7440020 Nickel 0.068 136.00 8001352 Toxaphene (Chlorinated Camphene) 0.001 2.70 79016 Trichloroethylene 0.074 148.00 121448 Triethylamine 0.008 16.00 108054 Vinyl Acetate 0.001 2.00 1330207 Xylenes (Isomers And Mixture) 0.155 310.00 10720 Clean Harbors Grassy Mountain LLC: Grassy Mountain Landfill Facility 106990 1,3-Butadiene 0.190 380.00 75070 Acetaldehyde 3.860 7,720.00 107028 Acrolein 0.450 900.00 71432 Benzene (Including Benzene From Gasoline) 4.860 9,720.00 108907 Chlorobenzene 9.760 19,520.00 50000 Formaldehyde 5.960 11,920.00 110543 Hexane 11.640 23,280.00

4/20/2010 Page 46 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Tooele 10720 Clean Harbors Grassy Mountain LLC: Grassy Mountain Landfill Facility 7647010 Hydrochloric Acid (Hydrogen Chloride) 28.920 57,840.00 91203 Naphthalene 0.460 920.00 108883 Toluene 2.110 4,220.00 1330207 Xylenes (Isomers And Mixture) 5.230 10,460.00 11339 Deseret Chemical Depot: Deseret Chemical Depot (South Area) 96128 1,2-Dibromo-3-Chloropropane 0.029 57.89 122667 1,2-Diphenylhydrazine 0.003 5.93 95954 2,4,5-Trichlorophenol 0.003 5.93 88062 2,4,6-Trichlorophenol 0.003 5.93 51285 2,4-Dinitrophenol 0.015 29.60 121142 2,4-Dinitrotoluene 0.003 5.93 53963 2-Acetylaminofluorene 0.030 59.32 91941 3,3-Dichlorobenzidine 0.008 16.57 119937 3,3-Dimethyl Benzidine 0.013 26.43 534521 4,6-Dinitro-O-Cresol, And Salts 0.015 29.60 92671 4-Aminobiphenyl 0.013 26.71 100027 4-Nitrophenol 0.015 29.60 ARF750 Arsenic Compounds 0.000 0.34 92875 Benzidine 0.030 59.32 BFQ500 Beryllium Compounds 0.000 0.10 CAE750 Cadmium Compounds 0.000 0.30 510156 Chlorobenzilate 0.003 5.93 CMJ500 Chromium Compounds 0.000 0.84 CNB850 Cobalt Compounds 0.000 0.13 132649 Dibenzofurans 0.003 5.93 60117 Dimethyl Aminoazobenzene 0.004 8.12 50000 Formaldehyde 0.002 4.13 76448 Heptachlor 0.030 59.32 118741 Hexachlorobenzene 0.003 5.93 87683 Hexachlorobutadiene 0.003 5.93 77474 Hexachlorocyclopentadiene 0.013 26.71 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.122 243.35 7439921 Lead 0.003 5.50 LCT000 Lead Compounds 0.000 0.17 EDF033 Mercury Compounds 0.012 23.34 62759 N-Nitrosodimethylamine 0.004 8.16 59892 N-Nitrosomorpholine 0.003 5.93 106503 P-Phenylenediamine 0.002 3.00 82688 Pentachloronitrobenzene (Quintobenzene) 0.015 29.60 87865 Pentachlorophenol 0.015 29.60 7723140 Phosphorus 0.022 44.87 EDF047 Polycyclic Organic Matter/4/ 0.000 0.00 91225 Quinoline 0.022 44.26

4/20/2010 Page 47 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Tooele 10706 Dugway Proving Ground: U.S. Army-Dugway Proving Ground 106990 1,3-Butadiene 0.000 0.03 106467 1,4-Dichlorobenzene(P) 0.000 0.00 540841 2,2,4-Trimethylpentane 0.003 5.11 121142 2,4-Dinitrotoluene 0.003 5.95 83329 Acenaphthene(TSP) 0.000 0.01 208968 Acenaphthylene(TSP) 0.000 0.08 75070 Acetaldehyde 0.000 0.75 75058 Acetonitrile 0.002 3.37 98862 Acetophenone 0.000 0.01 107028 Acrolein 0.000 0.08 107131 Acrylonitrile 0.001 2.90 120127 Anthracene 0.000 0.01 7440360 Antimony (TSP) 0.003 6.75 ADQ500 Antimony Compounds 0.000 0.47 7440382 Arsenic (TSP) 0.000 0.11 71432 Benzene (Including Benzene From Gasoline) 0.004 8.00 205992 Benzo (B) Fluoranthene 0.000 0.01 207089 Benzo (K) Fluoranthene 0.000 0.01 56553 Benzo(A)Anthracene 0.000 0.00 50328 Benzo(A)Pyrene 0.000 0.01 192972 Benzo(E)Pyrene/Tsp 0.000 0.01 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.05 7440417 Beryllium (TSP) 0.000 0.14 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.000 0.10 7440439 Cadmium 0.000 0.72 75150 Carbon Disulfide 0.000 0.72 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.001 1.70 56235 Carbon Tetrachloride 0.000 0.12 7782505 Chlorine 9.920 19,840.14 67663 Chloroform 0.000 0.00 7738945 Chromic Acid 0.000 0.54 CMJ500 Chromium Compounds 0.152 304.61 18540299 Chromium VI 0.000 0.01 218019 Chrysene (TSP) 0.000 0.00 7440484 Cobalt (TSP) 0.038 75.26 57125 Cyanide 0.004 7.49 53703 Dibenzo(A,H)Anthracn 0.000 0.00 84742 Dibutylphthalate 0.011 21.52 100414 Ethyl Benzene 0.000 0.01 107062 Ethylene Dichloride (1,2-Dichloroethane) 0.000 0.20 75218 Ethylene Oxide 0.000 0.03 206440 Fluoranthene (TSP) 0.000 0.02 50000 Formaldehyde 0.000 0.64 118741 Hexachlorobenzene 0.000 0.02

4/20/2010 Page 48 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Tooele 10706 Dugway Proving Ground: U.S. Army-Dugway Proving Ground 87683 Hexachlorobutadiene 0.000 0.00 77474 Hexachlorocyclopentadiene 0.000 0.00 110543 Hexane 0.000 0.46 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.001 1.27 74908 Hydrogen Cyanide (Hydrocyanic Acid) 0.045 89.17 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.01 7439921 Lead 0.024 48.00 18454121 Lead Chromate 0.002 3.37 7439965 Manganese (TSP) 0.625 1,250.27 MAR500 Manganese Compounds 0.000 0.59 67561 Methanol 0.000 0.04 74873 Methyl Chloride (Chloromethane) 0.000 0.01 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.000 0.01 108101 Methyl Isobutyl Ketone (Hexone) 0.000 0.06 80626 Methyl Methacrylate 0.000 0.00 1634044 Methyl Tert Butyl Ether 0.000 0.16 75092 Methylene Chloride (Dichloromethane) 0.011 22.77 91203 Naphthalene 0.000 0.49 7440020 Nickel (Ni 059) 0.024 48.47 98953 Nitrobenzene 0.000 0.00 85018 Phenanthrene 0.000 0.05 108952 Phenol 0.000 0.30 7723140 Phosphorus 0.820 1,639.98 123386 Propionaldehyde 0.000 0.02 78875 Propylene Dichloride (1,2-Dichloropropane) 0.000 0.82 129000 Pyrene 0.000 0.05 7782492 Selenium (TSP) 0.000 0.01 100425 Styrene 0.000 0.16 127184 Tetrachloroethylene (Perchloroethylene) 0.000 0.12 108883 Toluene 0.001 2.68 79016 Trichloroethylene 0.000 0.00 121448 Triethylamine 0.000 0.10 75014 Vinyl Chloride 0.000 0.21 1330207 Xylenes (Isomers And Mixture) 0.000 0.10 13039 Geneva Rock Products: Bauer Pit 106990 1,3-Butadiene 0.000 0.06 83329 Acenaphthene(TSP) 0.000 0.04 208968 Acenaphthylene(TSP) 0.000 0.07 75070 Acetaldehyde 0.001 1.28 107028 Acrolein 0.000 0.19 120127 Anthracene 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.004 7.00 205992 Benzo (B) Fluoranthene 0.000 0.01

4/20/2010 Page 49 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Tooele 13039 Geneva Rock Products: Bauer Pit 207089 Benzo (K) Fluoranthene 0.000 0.00 56553 Benzo(A)Anthracene 0.000 0.01 50328 Benzo(A)Pyrene 0.000 0.00 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.00 218019 Chrysene (TSP) 0.000 0.01 53703 Dibenzo(A,H)Anthracn 0.000 0.00 206440 Fluoranthene (TSP) 0.000 0.04 50000 Formaldehyde 0.001 2.26 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.00 91203 Naphthalene 0.001 1.07 85018 Phenanthrene 0.000 0.34 246 Polycyclic Organic Matter 0.001 1.92 129000 Pyrene 0.000 0.03 108883 Toluene 0.001 2.64 1330207 Xylenes (Isomers And Mixture) 0.001 1.81 14094 Granite Construction Company: Dugway Proving Grounds 540841 2,2,4-Trimethylpentane 0.000 0.45 83329 Acenaphthene(TSP) 0.000 0.02 208968 Acenaphthylene(TSP) 0.000 0.26 75070 Acetaldehyde 0.007 14.62 107028 Acrolein 0.000 0.30 120127 Anthracene 0.000 0.03 7440382 Arsenic (TSP) 0.000 0.01 71432 Benzene (Including Benzene From Gasoline) 0.002 4.87 CMJ500 Chromium Compounds 0.000 0.01 16065831 Chromium III 0.000 0.06 100414 Ethyl Benzene 0.001 2.70 206440 Fluoranthene (TSP) 0.000 0.01 50000 Formaldehyde 0.017 34.88 110543 Hexane 0.005 10.33 7439921 Lead 0.000 0.17 7439965 Manganese (TSP) 0.000 0.09 22967926 Mercury (Organic) 0.000 0.03 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.000 0.54 91203 Naphthalene 0.004 7.44 7440020 Nickel 0.000 0.71 85018 Phenanthrene 0.000 0.31 7723140 Phosphorus 0.000 0.31 246 Polycyclic Organic Matter 0.001 1.91 123386 Propionaldehyde 0.001 1.46 129000 Pyrene 0.000 0.03 106514 Quinone 0.001 1.80 108883 Toluene 0.016 32.76

4/20/2010 Page 50 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Tooele 14094 Granite Construction Company: Dugway Proving Grounds 1330207 Xylenes (Isomers And Mixture) 0.001 2.37 14083 Grantsville Sand & Gravel Pit 75070 Acetaldehyde 0.002 4.00 107028 Acrolein 0.000 0.40 71432 Benzene (Including Benzene From Gasoline) 0.005 10.00 50000 Formaldehyde 0.003 6.00 78875 Propylene Dichloride (1,2-Dichloropropane) 0.017 34.00 108883 Toluene 0.002 4.00 1330207 Xylenes (Isomers And Mixture) 0.001 2.00 14036 Harper Contracting Inc.: Bauer Pit 50000 Formaldehyde 0.010 20.00 11594 Tooele Army Depot: Tooele Army Depot 7439921 Lead 0.000 0.01 10716 US Magnesium LLC: Rowley Plant 7782505 Chlorine 579.122 1,158,245.00 155 Dioxins 0.000 0.01 7647010 Hydrochloric Acid (Hydrogen Chloride) 801.043 1,602,087.00 7439921 Lead 0.000 0.72 1336363 Polychlorinated Biphenyls (Aroclors) 0.000 0.18 13345 Wasatch Regional Landfill: Skull Valley Landfill 71432 Benzene (Including Benzene From Gasoline) 0.018 35.80 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.003 5.18 106934 Ethylene Dibromide (Dibromoethane) 0.002 4.07 108883 Toluene 0.551 1,102.00 75014 Vinyl Chloride 0.159 318.00 1330207 Xylenes (Isomers And Mixture) 0.414 828.00 Uintah 10771 Mid-America Pipeline Company: Dinosaur Station 75070 Acetaldehyde 0.164 327.60 107028 Acrolein 0.002 4.00 71432 Benzene (Including Benzene From Gasoline) 0.005 10.00 50000 Formaldehyde 0.160 320.00 14188 Nile Chapman Construction, Inc.: Ashley Valley Pit 75070 Acetaldehyde 0.000 0.08 107028 Acrolein 0.000 0.06 71432 Benzene (Including Benzene From Gasoline) 0.003 5.60 50000 Formaldehyde 0.000 0.56 91203 Naphthalene 0.000 0.92 108883 Toluene 0.001 2.00 1330207 Xylenes (Isomers And Mixture) 0.001 1.36 10756 Northwest Pipeline GP: Vernal Compressor Station (Grand Father Equipment)

4/20/2010 Page 51 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Uintah 10756 Northwest Pipeline GP: Vernal Compressor Station (Grand Father Equipment) 50000 Formaldehyde 0.025 50.00 10749 Simplot Phosphates LLC: Vernal Phosphate Operations 100414 Ethyl Benzene 0.008 15.40 110543 Hexane 0.002 3.80 67561 Methanol 0.518 1,036.00 108101 Methyl Isobutyl Ketone (Hexone) 0.002 4.40 75092 Methylene Chloride (Dichloromethane) 0.001 1.60 101688 Methylene Diphenyl Diisocyanate (MDI) 0.000 0.02 91203 Naphthalene 1.136 2,271.00 1165 Radionuclides (including Radon)/5/ 0.319 638.00 108883 Toluene 0.369 738.00 79016 Trichloroethylene 0.004 9.00 1330207 Xylenes (Isomers And Mixture) 0.060 119.60 Utah 13089 Amico-Klemp Company: Steel Fabrication Plant 1330207 Xylenes (Isomers And Mixture) 13.390 26,780.00 10790 Brigham Young University: Main Campus 75070 Acetaldehyde 0.012 24.80 107028 Acrolein 0.003 6.40 7440360 Antimony (TSP) 0.001 1.40 7440382 Arsenic (TSP) 0.003 6.20 71432 Benzene (Including Benzene From Gasoline) 0.024 48.40 100447 Benzyl Chloride 0.005 10.40 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.061 121.20 75150 Carbon Disulfide 0.001 2.00 CMJ500 Chromium Compounds 0.002 3.80 18540299 Chromium VI 0.001 1.20 7440484 Cobalt (TSP) 0.001 1.40 CNB850 Cobalt Compounds 0.001 1.60 57125 Cyanide 0.019 37.40 84742 Dibutylphthalate 0.002 4.60 124174 Diethylene Glycol Monobutylether A 0.038 75.40 100414 Ethyl Benzene 0.029 57.00 107211 Ethylene Glycol 0.079 157.40 50000 Formaldehyde 0.022 44.00 EDF109 Glycol Ethers 0.105 209.40 822060 Hexamethylene-1,6-Diisocyanate 0.001 1.20 110543 Hexane 0.179 358.80 7647010 Hydrochloric Acid (Hydrogen Chloride) 1.701 3,402.60 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.709 1,417.80 78591 Isophorone 0.004 8.60 7439921 Lead 0.003 6.20 7439965 Manganese (TSP) 0.004 7.40

4/20/2010 Page 52 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 10790 Brigham Young University: Main Campus 22967926 Mercury (Organic) 0.001 1.20 67561 Methanol 0.115 229.40 74839 Methyl Bromide (Bromomethane) 0.001 2.40 74873 Methyl Chloride (Chloromethane) 0.004 8.00 60344 Methyl Hydrazine 0.001 2.60 108101 Methyl Isobutyl Ketone (Hexone) 0.064 128.20 75092 Methylene Chloride (Dichloromethane) 0.002 4.40 91203 Naphthalene 0.002 3.40 7440020 Nickel 0.002 4.20 NDB000 Nickel Compounds 0.001 1.60 123386 Propionaldehyde 0.003 5.60 253 Selenium & Compounds 0.010 19.40 100425 Styrene 0.023 46.40 127184 Tetrachloroethylene (Perchloroethylene) 2.434 4,867.00 108883 Toluene 0.968 1,936.20 1330207 Xylenes (Isomers And Mixture) 0.173 345.80 12736 C & C Cast Polymers Incorporated: Cultured Marble Manufacturing 98828 Cumene 0.001 1.06 80626 Methyl Methacrylate 0.181 361.50 100425 Styrene 2.859 5,718.21 108883 Toluene 0.015 30.40 1330207 Xylenes (Isomers And Mixture) 0.001 1.33 11190 Crystal Animal Products Incorporated: Lehi Manufacturing Facility 7439921 Lead 0.014 28.00 11163 DGS Store Fixtures, Inc.: Payson Mill and Painting Facility THAPS Total HAPs 0.870 1,740.00 13045 DO NOT USE: See 14225 Action Target Academy: Firearms Training Equipment Manu 1330207 Xylenes (Isomers And Mixture) 1.890 3,780.00 10825 Geneva Nitrogen Inc.: Geneva Nitrogen Plant 7439921 Lead 0.000 0.02 10820 Geneva Rock Products: Orem Hot Mix Asphalt Plant & Concrete Batch Plants 106990 1,3-Butadiene 0.000 0.01 83329 Acenaphthene(TSP) 0.001 1.54 208968 Acenaphthylene(TSP) 0.005 9.76 75070 Acetaldehyde 0.286 572.00 107028 Acrolein 0.006 11.48 120127 Anthracene 0.001 1.62 71432 Benzene (Including Benzene From Gasoline) 0.087 175.00 205992 Benzo (B) Fluoranthene 0.000 0.06 56553 Benzo(A)Anthracene 0.000 0.18 50328 Benzo(A)Pyrene 0.000 0.01 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.02

4/20/2010 Page 53 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 10820 Geneva Rock Products: Orem Hot Mix Asphalt Plant & Concrete Batch Plants 218019 Chrysene (TSP) 0.000 0.47 206440 Fluoranthene (TSP) 0.000 0.51 50000 Formaldehyde 0.703 1,406.00 193395 Indeno(1,2,3-Cd)Pyre 0.000 0.00 91203 Naphthalene 0.145 290.00 85018 Phenanthrene 0.007 13.38 246 Polycyclic Organic Matter 0.210 419.14 129000 Pyrene 0.001 2.04 108883 Toluene 0.642 1,284.00 1330207 Xylenes (Isomers And Mixture) 0.044 88.20 10843 Geneva Rock Products: Pelican Point Limestone, Aggregate, & Concrete Facility 106990 1,3-Butadiene 0.000 0.01 83329 Acenaphthene(TSP) 0.000 0.00 208968 Acenaphthylene(TSP) 0.000 0.00 75070 Acetaldehyde 0.000 0.23 107028 Acrolein 0.000 0.03 71432 Benzene (Including Benzene From Gasoline) 0.000 0.39 206440 Fluoranthene (TSP) 0.000 0.00 50000 Formaldehyde 0.000 0.36 91203 Naphthalene 0.000 0.04 85018 Phenanthrene 0.000 0.01 65996932 Polycyclic aromatic hydrocarbons 0.011 21.00 246 Polycyclic Organic Matter 0.000 0.09 129000 Pyrene 0.000 0.00 108883 Toluene 0.000 0.16 1330207 Xylenes (Isomers And Mixture) 0.000 0.11 10880 Global Coatings Incorporated: Steel Coating Application Facility 100414 Ethyl Benzene 1.730 3,460.00 EDF109 Glycol Ethers 0.003 6.00 108101 Methyl Isobutyl Ketone (Hexone) 0.800 1,600.00 108883 Toluene 0.710 1,420.00 1330207 Xylenes (Isomers And Mixture) 4.450 8,900.00 11805 H E Davis Construction: Salem Pit 246 Polycyclic Organic Matter 0.000 0.18 11220 Haulmark Industries Inc.: Utility Trailer Assembly Facility 110543 Hexane 0.010 20.00 7439965 Manganese (TSP) 0.120 240.00 101688 Methylene Diphenyl Diisocyanate (MDI) 0.020 40.00 108883 Toluene 0.520 1,040.00 1330207 Xylenes (Isomers And Mixture) 0.010 20.00 11408 IM Flash Technologies LLC: Semiconductor Manufacturing Plant 7782505 Chlorine 0.110 220.00

4/20/2010 Page 54 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 11408 IM Flash Technologies LLC: Semiconductor Manufacturing Plant 50000 Formaldehyde 0.010 20.00 110543 Hexane 0.340 680.00 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.670 1,340.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 3.150 6,300.00 LCT000 Lead Compounds 0.000 0.18 12514 Kern River Gas Transmission Company: Elberta Compressor Station 106990 1,3-Butadiene 0.000 0.03 540841 2,2,4-Trimethylpentane 0.000 0.03 75070 Acetaldehyde 0.018 35.82 107028 Acrolein 0.000 0.59 71432 Benzene (Including Benzene From Gasoline) 0.005 10.51 92524 Biphenyl 0.000 0.02 25321226 Dichlorobenzene 0.000 0.00 100414 Ethyl Benzene 0.014 27.89 50000 Formaldehyde 0.313 625.06 110543 Hexane 0.002 4.89 67561 Methanol 0.000 0.29 108883 Toluene 0.057 113.35 1330207 Xylenes (Isomers And Mixture) 0.028 55.80 12538 Liberty Safe and Security Products, Inc.: Payson Manufacturing Plant 100414 Ethyl Benzene 0.120 240.00 108101 Methyl Isobutyl Ketone (Hexone) 0.790 1,580.00 108883 Toluene 0.540 1,080.00 1330207 Xylenes (Isomers And Mixture) 0.530 1,060.00 11789 Longview Fibre Company - Spanish Fork: Spanish Fork Box and Bag Plant 79107 Acrylic Acid 0.008 16.00 100414 Ethyl Benzene 0.003 6.00 107211 Ethylene Glycol 0.020 40.00 EDF109 Glycol Ethers 0.110 220.00 100425 Styrene 0.007 14.00 1330207 Xylenes (Isomers And Mixture) 0.021 42.00 11358 MACA Supply Company: Foundry 67561 Methanol 2.400 4,800.00 91203 Naphthalene 4.780 9,560.00 108952 Phenol 8.400 16,800.00 10812 Nestle USA Prepared Foods Division Inc.: Prepared Foods Processing Plant 25321226 Dichlorobenzene 0.000 0.46 50000 Formaldehyde 0.010 20.00 110543 Hexane 0.350 700.00 7439921 Lead 0.000 0.16 91203 Naphthalene 0.000 0.24 108883 Toluene 0.001 1.35

4/20/2010 Page 55 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 10806 Northwest Pipe Company: Pipe Manufacturing Facility 67561 Methanol 0.178 357.00 108883 Toluene 0.231 462.00 1330207 Xylenes (Isomers And Mixture) 0.315 630.00 10794 Pacific States Cast Iron Pipe Company: Pipe Casting Plant 7440439 Cadmium 0.000 0.00 7439921 Lead 0.010 20.00 7439965 Manganese (TSP) 0.000 0.02 108952 Phenol 4.840 9,680.00 1330207 Xylenes (Isomers And Mixture) 0.098 196.80 13031 PacifiCorp: Lakeside Power Plant 75070 Acetaldehyde 0.381 762.14 107028 Acrolein 0.061 122.00 71432 Benzene (Including Benzene From Gasoline) 0.114 228.98 100414 Ethyl Benzene 0.305 609.80 50000 Formaldehyde 2.859 5,717.48 7439921 Lead 0.005 9.67 91203 Naphthalene 0.000 0.19 65996932 Polycyclic aromatic hydrocarbons 0.021 42.00 75569 Propylene Oxide 0.276 552.50 108883 Toluene 1.239 2,477.14 1330207 Xylenes (Isomers And Mixture) 0.610 1,219.48 12063 Parish Chemical Company: Chemical Manufacturing Facility 123911 1,4-Dioxane (1,4-Diethyleneoxide) 0.129 258.60 79107 Acrylic Acid 0.003 6.51 92524 Biphenyl 0.004 7.72 120809 Catechol 0.003 6.73 67663 Chloroform 0.168 336.72 111422 Diethanolamine 0.070 139.18 106898 Epichlorohydrin (L-Chloro-2,3-Epoxypropane) 0.193 385.21 107211 Ethylene Glycol 0.085 169.71 50000 Formaldehyde 0.113 226.27 110543 Hexane 0.348 695.88 302012 Hydrazine 0.002 3.59 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.404 808.12 67561 Methanol 0.741 1,481.56 74884 Methyl Iodide (Iodomethane) 0.001 1.12 75092 Methylene Chloride (Dichloromethane) 0.557 1,113.42 108883 Toluene 1.230 2,460.29 121448 Triethylamine 0.111 222.23 1330207 Xylenes (Isomers And Mixture) 0.673 1,346.87 10823 Payson City Corporation: Payson City Power 7439921 Lead 0.000 0.00

4/20/2010 Page 56 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 10828 Pioneer Pipe and Tube: Pioneer Pipe and Tube 100414 Ethyl Benzene 0.440 880.00 1330207 Xylenes (Isomers And Mixture) 2.030 4,060.00 10874 Powder River Incorporated: Powder River Livestock Handling Equipment 98828 Cumene 0.099 198.70 100414 Ethyl Benzene 0.105 209.80 108883 Toluene 0.001 2.10 1330207 Xylenes (Isomers And Mixture) 0.510 1,020.00 10875 Provo Steel and Supply: Safe Manufacturing Facility 108883 Toluene 2.610 5,220.00 1330207 Xylenes (Isomers And Mixture) 0.100 200.00 13083 Questar Pipeline Company: Thistle Creek Compression Station 50000 Formaldehyde 0.760 1,520.00 10808 Rayloc (Division of Genuine Parts Company): Automotive Parts Remanufacturing Facil 1332214 Asbestos 0.022 43.40 71432 Benzene (Including Benzene From Gasoline) 0.014 28.00 50000 Formaldehyde 0.531 1,062.00 10842 RR Donnelley: Spanish Fork Printing Presses 107211 Ethylene Glycol 0.005 10.00 1330207 Xylenes (Isomers And Mixture) 0.002 3.00 10847 Sapa Extrusions Incorporated: Unrecycled Aluminum Scrap Production 7440439 Cadmium 0.000 0.40 7782505 Chlorine 0.135 270.80 50000 Formaldehyde 0.016 31.00 110543 Hexane 0.375 749.80 7647010 Hydrochloric Acid (Hydrogen Chloride) 3.755 7,510.80 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.115 230.00 7439921 Lead 0.001 2.40 67561 Methanol 2.654 5,307.40 11975 South Utah Valley Solid Waste District: Bayview Landfill 107131 Acrylonitrile 0.100 200.00 71432 Benzene (Including Benzene From Gasoline) 0.040 80.00 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.009 17.60 106934 Ethylene Dibromide (Dibromoethane) 0.000 0.11 75092 Methylene Chloride (Dichloromethane) 0.350 700.00 108883 Toluene 1.070 2,140.00 75014 Vinyl Chloride 0.140 280.00 1330207 Xylenes (Isomers And Mixture) 0.380 760.00 10819 Springville City Corporation: Whitehead Power Plant 75070 Acetaldehyde 0.000 0.08 107028 Acrolein 0.000 0.03 71432 Benzene (Including Benzene From Gasoline) 0.001 2.74 50000 Formaldehyde 0.000 0.28

4/20/2010 Page 57 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 10819 Springville City Corporation: Whitehead Power Plant 108883 Toluene 0.000 1.00 1330207 Xylenes (Isomers And Mixture) 0.000 0.69 12444 Staker & Parson Companies: Keigley Quarry 540841 2,2,4-Trimethylpentane 0.004 7.17 83329 Acenaphthene(TSP) 0.117 233.00 107028 Acrolein 0.002 4.66 7440382 Arsenic (TSP) 0.000 0.10 71432 Benzene (Including Benzene From Gasoline) 0.035 69.90 7440439 Cadmium 0.000 0.07 CMJ500 Chromium Compounds 0.001 1.07 7440484 Cobalt (TSP) 0.000 0.00 100414 Ethyl Benzene 0.021 43.00 50000 Formaldehyde 0.278 555.00 110543 Hexane 0.083 165.00 7439921 Lead 0.001 2.69 7439965 Manganese (TSP) 0.001 1.38 22967926 Mercury (Organic) 0.000 0.47 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.004 8.60 91203 Naphthalene 0.058 116.00 7440020 Nickel 0.006 11.30 7723140 Phosphorus 0.003 5.02 65996932 Polycyclic aromatic hydrocarbons 0.021 42.10 123386 Propionaldehyde 0.012 23.30 106514 Quinone 0.014 28.70 253 Selenium & Compounds 0.000 0.06 108883 Toluene 0.260 520.00 1330207 Xylenes (Isomers And Mixture) 0.018 35.80 10814 Sunroc Corporation: Santaquin Aggregate Facility 246 Polycyclic Organic Matter 0.000 0.19 13144 Temkin International Incorporated: Payson Facility 124174 Diethylene Glycol Monobutylether A 0.170 340.00 2807309 Ethylene Glycol Monopropyl Ether 0.001 2.00 10835 Western Pipe Coaters and Engineers: Western Pipe Coaters and Engineers 108883 Toluene 3.780 7,560.00 11436 Westroc Incorporated: Highland Aggregate Pit 7440382 Arsenic (TSP) 0.000 0.01 CMJ500 Chromium Compounds 0.000 0.03 7439921 Lead 0.000 0.01 7439965 Manganese (TSP) 0.000 0.15 7440020 Nickel 0.000 0.04 7723140 Phosphorus 0.000 0.11 13315 Whitewater Whirlpool Baths & Systems: Cultured Marble & Fiberglass Casting

4/20/2010 Page 58 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Utah 13315 Whitewater Whirlpool Baths & Systems: Cultured Marble & Fiberglass Casting 80626 Methyl Methacrylate 0.190 380.00 100425 Styrene 12.040 24,080.00 13363 Whitewater Whirlpool Baths & Systems: Pleasant Grove 80626 Methyl Methacrylate 0.040 80.00 100425 Styrene 3.300 6,600.00 Wasatch 10884 Heber Light and Power Company: Power Plant 79345 1,1,2,2-Tetrachloroethane 0.000 0.00 79005 1,1,2-Trichloroethane 0.000 0.00 106990 1,3-Butadiene 0.000 0.01 540841 2,2,4-Trimethylpentane 0.000 0.00 75070 Acetaldehyde 0.000 0.15 107028 Acrolein 0.000 0.09 71432 Benzene (Including Benzene From Gasoline) 0.000 0.04 92524 Biphenyl 0.000 0.00 56235 Carbon Tetrachloride 0.000 0.00 108907 Chlorobenzene 0.000 0.00 67663 Chloroform 0.000 0.00 100414 Ethyl Benzene 0.000 0.00 106934 Ethylene Dibromide (Dibromoethane) 0.000 0.00 50000 Formaldehyde 0.000 0.94 110543 Hexane 0.000 0.02 67561 Methanol 0.000 0.04 91203 Naphthalene 0.000 0.01 108883 Toluene 0.000 0.02 1330207 Xylenes (Isomers And Mixture) 0.000 0.01 Washington 12934 Quality Excavation Inc.: Aggregate Plant - Fort Pierce Industrial Park 50000 Formaldehyde 0.010 20.00 12914 Southern Utah Asphalt: Asphalt Plant in Ft. Pierce Industrial park 540841 2,2,4-Trimethylpentane 0.003 6.00 71432 Benzene (Including Benzene From Gasoline) 0.027 54.00 50000 Formaldehyde 0.213 426.00 7723140 Phosphorus 0.002 4.00 10892 St. George City Power: Red Rock, Millcreek and Bloomington Power Generation Statio 107028 Acrolein 0.001 2.17 50000 Formaldehyde 0.120 240.66 65996932 Polycyclic aromatic hydrocarbons 0.000 0.74 12680 Sunroc Corporation: Anderson Junction Pit 65996932 Polycyclic aromatic hydrocarbons 0.000 0.02 246 Polycyclic Organic Matter 0.000 0.05

4/20/2010 Page 59 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Washington 14131 Sunroc Corporation: Apple Valley Cinder Pit Facility 65996932 Polycyclic aromatic hydrocarbons 0.000 0.00 246 Polycyclic Organic Matter 0.000 0.00 14200 Sunroc Corporation: Enterprise Concrete Batch Plant Facility 7439921 Lead 0.000 0.00 12516 Sunroc Corporation: Ft. Pierce Concrete Batch & Aggregate Plants 7439921 Lead 0.000 0.00 12512 Veyo Compressor Station 106990 1,3-Butadiene 0.000 0.08 540841 2,2,4-Trimethylpentane 0.000 0.08 75070 Acetaldehyde 0.041 81.90 107028 Acrolein 0.001 1.50 71432 Benzene (Including Benzene From Gasoline) 0.012 23.94 92524 Biphenyl 0.000 0.06 100414 Ethyl Benzene 0.032 63.58 50000 Formaldehyde 0.713 1,426.00 110543 Hexane 0.003 6.48 67561 Methanol 0.000 0.74 108883 Toluene 0.129 258.36 1330207 Xylenes (Isomers And Mixture) 0.064 127.18 11979 Washington Cty Solid Waste Spcl Svc Dist: Washington County Sanitary Landfill 71432 Benzene (Including Benzene From Gasoline) 0.023 46.00 463581 Carbon Oxysulfide[Carbon Oxide Sulfide (COS)] 0.003 6.58 106934 Ethylene Dibromide (Dibromoethane) 0.003 5.18 108883 Toluene 0.701 1,402.00 75014 Vinyl Chloride 0.020 40.20 1330207 Xylenes (Isomers And Mixture) 0.527 1,054.00 12188 Western Rock Products Corporation: Fort Pierce Pit 540841 2,2,4-Trimethylpentane 0.005 10.10 75070 Acetaldehyde 0.165 330.00 107028 Acrolein 0.003 6.59 7440382 Arsenic (TSP) 0.000 0.14 71432 Benzene (Including Benzene From Gasoline) 0.049 98.90 7440439 Cadmium 0.000 0.10 CMJ500 Chromium Compounds 0.001 1.51 7440484 Cobalt (TSP) 0.000 0.01 100414 Ethyl Benzene 0.030 60.80 50000 Formaldehyde 0.390 780.00 110543 Hexane 0.117 233.00 7439921 Lead 0.002 3.80 7439965 Manganese (TSP) 0.001 1.95 22967926 Mercury (Organic) 0.000 0.66 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.006 12.20

4/20/2010 Page 60 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Washington 12188 Western Rock Products Corporation: Fort Pierce Pit 91203 Naphthalene 0.083 165.00 7440020 Nickel 0.008 16.00 7723140 Phosphorus 0.004 7.10 65996932 Polycyclic aromatic hydrocarbons 0.030 59.50 123386 Propionaldehyde 0.017 33.00 106514 Quinone 0.020 40.60 253 Selenium & Compounds 0.000 0.09 108883 Toluene 0.367 735.00 1330207 Xylenes (Isomers And Mixture) 0.025 50.70 Weber 14167 A & K Finishing, Inc. 100414 Ethyl Benzene 0.002 3.40 108101 Methyl Isobutyl Ketone (Hexone) 0.018 35.40 1330207 Xylenes (Isomers And Mixture) 0.004 8.80 11305 Brenntag Pacific Incorporated: Distribution Terminal 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.061 122.00 10936 Cereal Food Processors--Ogden: Cereal Food Processors 7439921 Lead 0.000 0.00 10925 FMC Jetway Systems: East Plant 100414 Ethyl Benzene 0.150 300.00 EDF109 Glycol Ethers 0.200 400.00 822060 Hexamethylene-1,6-Diisocyanate 0.010 20.00 108101 Methyl Isobutyl Ketone (Hexone) 0.120 240.00 108883 Toluene 0.270 540.00 1330207 Xylenes (Isomers And Mixture) 0.970 1,940.00 10951 Fresenius Medical Care: Ogden Dialysis Products Manufacturing 50000 Formaldehyde 0.030 59.40 110543 Hexane 0.710 1,420.00 75092 Methylene Chloride (Dichloromethane) 0.638 1,276.00 12272 Granite Construction Company: West Haven Asphalt Plant 540841 2,2,4-Trimethylpentane 0.010 19.80 83329 Acenaphthene(TSP) 0.000 0.69 208968 Acenaphthylene(TSP) 0.003 6.00 75070 Acetaldehyde 0.084 168.99 107028 Acrolein 0.002 3.38 120127 Anthracene 0.000 0.48 7440360 Antimony (TSP) 0.000 0.09 7440382 Arsenic (TSP) 0.000 0.28 71432 Benzene (Including Benzene From Gasoline) 0.097 193.09 205992 Benzo (B) Fluoranthene 0.000 0.05 207089 Benzo (K) Fluoranthene 0.000 0.02 56553 Benzo(A)Anthracene 0.000 0.11

4/20/2010 Page 61 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Weber 12272 Granite Construction Company: West Haven Asphalt Plant 192972 Benzo(E)Pyrene/Tsp 0.000 0.05 191242 Benzo(Ghi)Peryln/Tsp 0.000 0.02 7440439 Cadmium 0.000 0.20 CMJ500 Chromium Compounds 0.001 2.94 218019 Chrysene (TSP) 0.000 0.09 7440484 Cobalt (TSP) 0.000 0.01 100414 Ethyl Benzene 0.059 118.83 206440 Fluoranthene (TSP) 0.000 0.30 50000 Formaldehyde 0.767 1,534.84 110543 Hexane 0.228 455.50 7439921 Lead 0.001 2.18 7439965 Manganese (TSP) 0.002 3.81 22967926 Mercury (Organic) 0.000 0.43 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.012 23.76 91203 Naphthalene 0.059 117.39 7440020 Nickel 0.016 31.19 85018 Phenanthrene 0.003 5.77 7723140 Phosphorus 0.007 13.86 246 Polycyclic Organic Matter 0.026 51.96 123386 Propionaldehyde 0.008 16.90 129000 Pyrene 0.000 0.60 106514 Quinone 0.010 20.80 253 Selenium & Compounds 0.000 0.17 108883 Toluene 0.216 431.75 1330207 Xylenes (Isomers And Mixture) 0.050 99.05 10917 Great Salt Lake Minerals Corporation: Production Plant 7439921 Lead 0.000 0.24 10920 Horizon Milling, LLC: Ogden Flour Mill 74839 Methyl Bromide (Bromomethane) 2.100 4,200.00 10932 Interpace Holdings, LLC 106467 1,4-Dichlorobenzene(P) 0.001 1.68 7440360 Antimony (TSP) 0.000 0.94 7440382 Arsenic (TSP) 0.001 1.08 71432 Benzene (Including Benzene From Gasoline) 0.050 100.98 7440417 Beryllium (TSP) 0.000 0.02 117817 Bis(2-Ethylhexyl)Phthalate (DEHP) 0.035 69.64 7440439 Cadmium 0.001 1.14 75150 Carbon Disulfide 0.001 1.42 7782505 Chlorine 0.023 45.28 CMJ500 Chromium Compounds 0.000 0.74 7440484 Cobalt (TSP) 0.000 0.08 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.170 340.00 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 6.090 12,180.00

4/20/2010 Page 62 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Weber 10932 Interpace Holdings, LLC 7439921 Lead 0.003 5.22 7439965 Manganese (TSP) 0.005 10.10 22967926 Mercury (Organic) 0.000 0.26 74873 Methyl Chloride (Chloromethane) 0.012 23.34 71556 Methyl Chloroform (1,1,1-Trichloroethane) 0.000 0.16 7440020 Nickel 0.001 2.50 95476 O-Xylenes 0.001 2.02 108952 Phenol 0.002 3.00 246 Polycyclic Organic Matter 0.001 1.98 253 Selenium & Compounds 0.004 8.00 100425 Styrene 0.000 0.70 127184 Tetrachloroethylene (Perchloroethylene) 0.000 0.10 108883 Toluene 0.003 5.58 12174 Interstate Brands West Corporation: Interstate Brands Corporation - Ogden 7439921 Lead 0.000 0.02 67561 Methanol 0.780 1,560.00 11687 J.M. Thomas Forest Products: Ogden Building Products Distribution 120821 1,2,4-Trichlorobenzene 0.002 4.80 107211 Ethylene Glycol 0.575 1,150.17 10927 Levolor Home Fashions: Manufacturing Facility EDF109 Glycol Ethers 0.010 20.00 11607 Ogden Publishing Corporation: Newspaper Publishing 98828 Cumene 0.228 455.40 110543 Hexane 0.005 9.36 1330207 Xylenes (Isomers And Mixture) 0.304 607.20 10973 PacifiCorp: Little Mountain Power Plant 7440382 Arsenic (TSP) 0.000 0.40 7440439 Cadmium 0.001 2.20 CMJ500 Chromium Compounds 0.001 2.80 50000 Formaldehyde 0.076 152.00 110543 Hexane 1.824 3,648.00 7439921 Lead 0.001 1.00 22967926 Mercury (Organic) 0.000 0.60 7440020 Nickel 0.002 4.20 246 Polycyclic Organic Matter 9.526 19,051.20 11794 Petersen Inc.: Steel Fabrication 108101 Methyl Isobutyl Ketone (Hexone) 0.030 60.00 108883 Toluene 0.340 680.00 1330207 Xylenes (Isomers And Mixture) 0.520 1,040.00 12000 Weber County School District: South Ogden Junior High School 7439921 Lead 0.000 0.00 12280 Weber State University: Weber State University Campus

4/20/2010 Page 63 of 64 Emissions Emissions County CAS # (tons/year) (lbs/year) Weber 12280 Weber State University: Weber State University Campus 79005 1,1,2-Trichloroethane 0.005 10.71 79107 Acrylic Acid 0.060 120.59 71432 Benzene (Including Benzene From Gasoline) 0.000 0.01 100414 Ethyl Benzene 0.008 16.74 107211 Ethylene Glycol 0.281 563.00 75218 Ethylene Oxide 0.000 0.12 50000 Formaldehyde 0.000 0.12 110543 Hexane 0.001 1.14 67561 Methanol 0.056 112.00 108101 Methyl Isobutyl Ketone (Hexone) 0.000 0.44 75092 Methylene Chloride (Dichloromethane) 0.013 26.75 91203 Naphthalene 0.000 0.55 108883 Toluene 0.141 282.75 1330207 Xylenes (Isomers And Mixture) 0.074 148.51 11992 Wells Industries Incorporated: Ogden Trailer manufacturing 108383 M-Xylenes 0.010 20.00 67561 Methanol 0.400 800.00 108101 Methyl Isobutyl Ketone (Hexone) 0.280 560.00 91203 Naphthalene 0.010 20.00 95476 O-Xylenes 0.010 20.00 106423 P-Xylenes 0.010 20.00 108883 Toluene 4.740 9,480.00 1330207 Xylenes (Isomers And Mixture) 2.110 4,220.00 10922 Westinghouse Electric Company LLC: Zirconium/Hafnium Production Plant 7440439 Cadmium 0.000 0.22 56235 Carbon Tetrachloride 0.708 1,415.00 7782505 Chlorine 7.058 14,115.86 CMJ500 Chromium Compounds 0.000 0.29 50000 Formaldehyde 0.008 15.28 87683 Hexachlorobutadiene 0.013 25.94 7647010 Hydrochloric Acid (Hydrogen Chloride) 0.151 302.52 7664393 Hydrogen Fluoride (Hydrofluoric Acid) 0.021 41.78 7439921 Lead 0.000 0.10 108101 Methyl Isobutyl Ketone (Hexone) 0.437 873.13 75445 Phosgene 1.072 2,143.08

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