1. Jan. EPA Final GHG Reporting Guidance (actually Dec 24 2010) Mar. 31stAnnual GHG Reporting AprilProposed HAPs or Mercury MACT July 1st Annual Toxic Release Inventory (TRI) Reporting (Regulation in place since 2000) Summer Proposed EPA rule on setting New Source Performance Standards (NSPS) for all GHGs (including CO 2 and SF 6 ) Sept. EPA to convene regular air quality modeling conference with states and regulated industries to establish protocols for background and better weather information for SO 2, NOx, ozone and PM 2.5 NAAQs Dec. 31st EPA public welfare periodic review and consideration of tighter secondary NAAQs for SO 2 and NOx to reduce aquatic acidification (cross media regulation) Unknown Date Triggered by construction of new power plant or significant improvement at existing plant: CAA’s Best Available Control Technology (BACT )for new power plants of significant modifications triggering BACT where states have lower PSD thresholds or where Federal EPA assumes BACT process Unknown Date States to require Title V Operating Permit revisions to incorporate any Federal EPA GHG regulations Mar. 31stGHG Reporting July 1stTRI Reporting Unknown Date Expected EPA decisions on PSD for larger industrial emitters under Clean Air Act Section 115 for GHGs where national governmental bodies or decisions on pollution control choices -- Sec. 115 is an international section of CAA. Possible movement after next IPCC meeting or NGO litigation. Air 2011 Mar. 31stGHG Reporting June EPA expected to propose decision on whether to revise its primary and secondary NAAQs (PM, ozone, SO 2, and NOx) July 1stTRI Reporting Mar. 31stGHG Reporting April EPA to propose nonattainment designations (based upon SMSAs or counties) based upon airshed July 1stTRI Reporting Sept. EPA to convene regular air quality modeling conference with states and regulated industries to establish protocols for background and better weather information for SO 2, NOx, ozone and PM 2.5 NAAQs Dec. HAPs MACT compliance date Mar. 31stGHG Reporting July 1stTRI Reporting Oct. EPA deadline for attainment demonstrations for revised SO 2, NOx and Ozone standards. The new standards would kick in for new power plants likely permitted, built, or operation within 60 days of new standards Mar. 31stGHG Reporting July 1stTRI Reporting Mar. 31stGHG Reporting July 1stTRI Reporting Aug. States' State Implementation Plans (SIPs) must demonstrate air quality attainment with tighter health standards set in 2010. Local air authorities may set new and tighter air pollution controls. 2012 2013201420152016 2017 2020 Mar. 31stGHG Reporting July 1stTRI Reporting Sept. EPA to convene regular air quality modeling conference with states and regulated industries to establish protocols for background and better weather information for SO2, NOx, ozone and PM 2.5 NAAQs Anticipated Timeline of Major EPA Regulations (as of Jan. 2011)

2. Water Waste Feb. 1st Implementation of new EPA NPDES water permit for construction and development July 1stTRI Reporting Mar. 14th EPA re-proposal of 316(b) Phase II and II of Impingement/ entrainment mitigation or prevention July 1stTRI Reporting July 1stTRI Reporting July Final 316(b) Phase II and Phase III Entrainment and impingement rule July 23rd Proposal of revised effluent guideline revision ("ELG") at all utilities. Expected to control mercury, chlorine, other hazardous air pollutants or metals. Might include temperature limits for discharge under 316(a) in this rulemaking although the EPA has not been announced Unknown DatePossible EPA regulation on thermal July 1stTRI Reporting Jan. 31st Final effluent guideline rule for new and technology to reduce chlorine, boron, etc. Jan. 31st Final implementation of Final 316(b) Phase II and III rule requirements at each utility (triggered by NPDES permit renewals between 2012 and 2015) July 1stTRI Reporting June – Sept. Toxics Substances Control Act (TSCA) IUR report on chemicals “manufactured” (including import) such as coal ash sale to wallboard manufacturers for calendar 2010 activities. Next reporting year 2015 for calendar year 2014. This TSCA regulation covers utilities that send coal ash byproducts sent into commercial or beneficial use. Disposal is not covered. July 1stTRI Reporting May U.S. EPA to propose possible changes to the PCB use authorization at utilities (and industry) under Resource Conservation and Recovery Act (RCRA) July 1stTRI Reporting Unknown Date EPA final rule on coal ash/beneficial reuse under RCRA July 1stTRI Reporting July 1stTRI Reporting 2010 20112012 2014 2013 Anticipated Timeline of Major EPA Regulations (as of Jan. 2011)