|  |  |  |  |  |  |  |  |  |  | Split * | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Chromium and chromium compounds | 676 | 0 | 3,694 | 72.40% | 12.6% | 14.9% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Sulfuric acid | 35,106 | 0 | 576 | 11.30% | 12.5% | 15.0% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Polycyclic aromatic compounds | 6 | 0 | 169 | 3.32% | 14.7% | 14.8% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Manganese and manganese compounds | 249 | 0 | 157 | 3.07% | 10.7% | 16.2% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Barium and barium compounds | 1,838 | 0 | 73 | 1.42% | 12.8% | 15.0% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Polycyclic aromatic compounds | 4 | 0 | 69 | 1.35% | 10.5% | 15.8% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Barium and barium compounds | 1,029 | 0 | 38 | 0.75% | 10.7% | 16.3% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Polycyclic aromatic compounds | 5 | 0 | 34 | 0.66% | 20.1% | 14.9% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Sulfuric acid | 15,849 | 0 | 30 | 0.59% | 17.5% | 12.7% |  | 
| LANSING POWER STATION | LANSING | IA | Manganese and manganese compounds | 529 | 0 | 28 | 0.54% | 11.6% | 5.6% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Manganese and manganese compounds | 1,704 | 0 | 27 | 0.53% | 11.8% | 14.0% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Polycyclic aromatic compounds | 9 | 0 | 25 | 0.48% | 8.3% | 8.0% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Sulfuric acid | 2,450 | 0 | 24 | 0.46% | 14.6% | 17.1% |  | 
| LANSING POWER STATION | LANSING | IA | Sulfuric acid | 9,533 | 0 | 22 | 0.43% | 12.3% | 6.2% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Naphthalene | 27 | 0 | 21 | 0.42% | 10.6% | 16.1% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Barium and barium compounds | 691 | 0 | 19 | 0.37% | 16.2% | 16.3% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Barium and barium compounds | 2,669 | 0 | 11 | 0.22% | 17.4% | 12.7% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Hydrogen fluoride | 66,976 | 0 | 10 | 0.20% | 10.9% | 17.4% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Sulfuric acid | 4,660 | 0 | 10 | 0.19% | 10.9% | 17.4% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Barium and barium compounds | 768 | 0 | 9 | 0.18% | 11.6% | 13.7% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Hydrochloric acid | 78,962 | 0 | 9 | 0.17% | 10.9% | 17.4% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Lead and lead compounds | 56 | 0 | 6 | 0.13% | 12.6% | 15.0% |  | 
| LANSING POWER STATION | LANSING | IA | Polycyclic aromatic compounds | 7 | 0 | 6 | 0.11% | 9.9% | 4.5% |  | 
| LANSING POWER STATION | LANSING | IA | Barium and barium compounds | 469 | 0 | 6 | 0.11% | 11.8% | 5.8% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Polycyclic aromatic compounds | 2 | 0 | 5 | 0.09% | 16.8% | 12.6% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Naphthalene | 24 | 0 | 4 | 0.08% | 9.9% | 11.0% |  | 
| LANSING POWER STATION | LANSING | IA | Hydrogen fluoride | 21,332 | 0 | 4 | 0.07% | 12.3% | 6.2% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Hydrogen fluoride | 24,976 | 0 | 3 | 0.06% | 12.6% | 5.8% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Hydrochloric acid | 5,852 | 0 | 3 | 0.06% | 14.6% | 17.1% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Lead and lead compounds | 131 | 0 | 2 | 0.04% | 12.5% | 14.8% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Hydrogen fluoride | 13,739 | 0 | 2 | 0.04% | 17.5% | 12.7% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Sulfuric acid | 585 | 0 | 1 | 0.03% | 12.6% | 15.0% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Lead and lead compounds | 52 | 0 | 1 | 0.03% | 10.8% | 16.7% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Lead and lead compounds | 13 | 0 | 1 | 0.02% | 15.3% | 16.7% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Mercury and mercury compounds | 23 | 0 | 1 | 0.02% | 14.6% | 17.1% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Hydrochloric acid | 6,783 | 0 | 1 | 0.01% | 17.5% | 12.7% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Mercury and mercury compounds | 7 | 0 | 0 | 0.01% | 12.5% | 15.0% |  | 
| LANSING POWER STATION | LANSING | IA | Ammonia | 15,522 | 0 | 0 | 0.01% | 12.2% | 6.1% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Mercury and mercury compounds | 37 | 0 | 0 | 0.01% | 12.6% | 15.0% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Mercury and mercury compounds | 51 | 0 | 0 | 0.01% | 12.6% | 5.8% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Lead and lead compounds | 20 | 0 | 0 | 0.01% | 17.4% | 12.7% |  | 
| LANSING POWER STATION | LANSING | IA | Lead and lead compounds | 12 | 0 | 0 | 0.00% | 12.1% | 6.0% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Mercury and mercury compounds | 28 | 0 | 0 | 0.00% | 10.9% | 17.2% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Lead and lead compounds | 18 | 0 | 0 | 0.00% | 12.6% | 5.8% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Copper and copper compounds | 22 | 0 | 0 | 0.00% | 10.7% | 16.3% |  | 
| IPL-SUTHERLAND GENERATING STATION | MARSHALLTOWN | IA | Naphthalene | 3 | 0 | 0 | 0.00% | 15.8% | 44.3% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Polycyclic aromatic compounds | 1 | 0 | 0 | 0.00% | 12.3% | 5.7% |  | 
| LANSING POWER STATION | LANSING | IA | Mercury and mercury compounds | 10 | 0 | 0 | 0.00% | 12.2% | 6.1% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 12.5% | 15.0% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 12.6% | 15.0% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Zinc and zinc compounds | 1,192 | 0 | 0 | 0.00% | 12.6% | 5.6% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Copper and copper compounds | 38 | 0 | 0 | 0.00% | 11.5% | 13.4% |  | 
| LANSING POWER STATION | LANSING | IA | Hydrochloric acid | 562 | 0 | 0 | 0.00% | 12.3% | 6.2% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Mercury and mercury compounds | 8 | 0 | 0 | 0.00% | 17.4% | 12.7% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 10.9% | 17.4% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Vanadium and vanadium compounds | 44 | 0 | 0 | 0.00% | 10.7% | 16.3% |  | 
| PRAIRIE CREEK GENERATING STATION | CEDAR RAPIDS | IA | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 14.6% | 14.8% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 17.5% | 12.7% |  | 
| EDGEWATER GENERATING STATION | SHEBOYGAN | WI | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 10.6% | 16.0% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 12.6% | 5.8% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Vanadium and vanadium compounds | 42 | 0 | 0 | 0.00% | 11.6% | 13.8% |  | 
| LANSING POWER STATION | LANSING | IA | Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0.00% | 12.3% | 6.2% |  | 
| M L KAPP GENERATING STATION | CLINTON | IA | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 19.7% | 14.9% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 9.0% | 9.1% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Zinc and zinc compounds | 18 | 0 | 0 | 0.00% | 11.6% | 13.7% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Hydrochloric acid | 20 | 0 | 0 | 0.00% | 12.6% | 15.0% |  | 
| COLUMBIA ENERGY CENTER | PARDEEVILLE | WI | Hydrogen fluoride | 7 | 0 | 0 | 0.00% | 12.6% | 15.0% |  | 
| LANSING POWER STATION | LANSING | IA | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 10.4% | 4.8% |  | 
| BURLINGTON GENERATING STATION | BURLINGTON | IA | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 17.0% | 12.7% |  | 
| NELSON DEWEY GENERATING STATIO N | CASSVILLE | WI | Benzo(g,h,i)perylene | 0 | 0 | 0 | 0.00% | 12.3% | 5.7% |  |