| CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| Christopher N Slagle | CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| Gregory J Lestini | CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| Kurtis A Tunnell | CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| Laurie Thornton | CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| Michael F Roeder | CenterPoint Energy DBA Vectren Energy | — | Sep-Dec11 |
| County Commissioners' Association of Ohio | — | Sep-Dec11 |
| Larry L Long | County Commissioners' Association of Ohio | — | Sep-Dec11 |
| Department of Agriculture | — | May-Aug11 |
| James Zehringer | Department of Agriculture | — | May-Aug11 |
| Melissa Bacon | Department of Health | — | Sep-Dec12 |
| Environment Ohio, Inc | — | Sep-Dec11 |
| Julian Boggs | Environment Ohio, Inc | — | Sep-Dec11 |
| Governor's Office | — | May-Aug11 |
| Benjamin Kanzeg | Governor's Office | — | May-Aug11 |
| Beth Hansen | Governor's Office | — | May-Aug11 |
| Brad Barger | Governor's Office | — | Sep-Dec11 |
| Craig Butler | Governor's Office | — | Jan-Apr12 |
| Jai Chabria | Governor's Office | — | Sep-Dec11 |
| James W. Sheppard, III | Governor's Office | — | May-Aug11 |
| Jeff Polesovsky | Governor's Office | — | May-Aug12 |
| Kimberly Kutschbach | Governor's Office | — | May-Aug12 |
| Matt Carle | Governor's Office | — | May-Aug11 |
| Melissa Bacon | Governor's Office | — | Sep-Dec11 |
| Scott Blake | Governor's Office | — | Jan-Apr12 |
| Wayne Struble | Governor's Office | — | May-Aug11 |
| Industrial Energy Users-Ohio | — | Sep-Dec11 |
| Samuel C Randazzo | Industrial Energy Users-Ohio | — | Sep-Dec11 |
| Scott Edward Elisar | Industrial Energy Users-Ohio | — | Sep-Dec11 |
| Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| Courtney Saunders | Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| Daniel P Leite | Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| Keith H Brooks | Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| Kurt L Leib | Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| William J Schedel, Jr | Marathon Petroleum Corporation & its Subsidiaries and Affiliates | — | Sep-Dec11 |
| Ohio Department of Natural Resources | — | Jan-Apr12 |
| Andrew Ware | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Ben Pendery | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Brittney Colvin | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Frederick Shimp | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Glen Cobb | Ohio Department of Natural Resources | — | Jan-Apr12 |
| James Zehringer | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Karl R. Gebhardt | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Michael Biddison | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Nathan Aichele | Ohio Department of Natural Resources | — | Jan-Apr12 |
| William Damschroder | Ohio Department of Natural Resources | — | Jan-Apr12 |
| Ohio Environmental Council | — | Sep-Dec11 |
| Jack Shaner | Ohio Environmental Council | — | Sep-Dec11 |
| Kristy Meyer | Ohio Environmental Council | — | Sep-Dec12 |
| Ohio Farmers Union | — | Sep-Dec11 |
| Ron Sylvester | Ohio Farmers Union | — | Sep-Dec11 |
| Ohio Gas Company | — | Sep-Dec11 |
| Samuel C Randazzo | Ohio Gas Company | — | Sep-Dec11 |
| Scott Edward Elisar | Ohio Gas Company | — | Sep-Dec11 |
| Ohio Oil Gathering Corporation | — | Jan-Apr12 |
| Jeffrey T DeLeone | Ohio Oil Gathering Corporation | — | Jan-Apr12 |
| Matthew Forney | Ohio Oil Gathering Corporation | — | Jan-Apr12 |
| Ohio Oil and Gas Association | — | Sep-Dec11 |
| Brian Hickman | Ohio Oil and Gas Association | — | Sep-Dec11 |
| Penny Seipel | Ohio Oil and Gas Association | — | May-Aug12 |
| Thomas E. Stewart | Ohio Oil and Gas Association | — | Sep-Dec11 |
| Ohio Right to Life | — | Jan-Apr12 |
| Sierra Club - Ohio Chapter | — | Jan-Apr12 |
| Matt Trokan | Sierra Club - Ohio Chapter | — | Sep-Dec11 |
| Christopher N Slagle | United States Steel Corporation | — | May-Aug12 |
| Alex R Arshinkoff | University of Akron | — | Sep-Dec11 |