1. Navajo Generating Station Owners Initial Proposal Timeline Discussion Glen D. Reeves February 4, 2011 2-04-11 NGS Owners Initial Proposal - GDReeves

2. Key Challenges EPA Rulings Expected Co-Tenancy Expires LADWP Withdraws Lease Expires 323 Grants Expire Coal Contract Expires Transmission Contracts Expire LADWP Seeks Withdrawal Environmental Critical Agreements Ownership Equipment Installation Requirement Expected Water Service Contract Expires 2-04-11 NGS Owners Initial Proposal - GDReeves 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

4. Timeline for Proposed Activities 2011 2064 “ Goal is to achieve natural background levels by 2064 (i.e., no manmade visibility impairment)” 53 Years Every 10 years beginning in 2018 the previous SIP/FIP must be updated to account for current visibility and progress made toward the 2064 goal 2-04-11 NGS Owners Initial Proposal - GDReeves

5. Timeline for Proposed Activities 2011 2064 “ Goal is to achieve natural background levels by 2064 (i.e., no manmade visibility impairment)” 2018 2028 2038 2048 2058 Every 10 years beginning in 2018 the previous SIP/FIP must be updated to account for current visibility and progress made toward the 2064 goal 2 nd SIP/FIP update for RHR is due in 2018 2-04-11 NGS Owners Initial Proposal - GDReeves

6. Timeline for Proposed Activities 2011 2064 2018 2028 2038 2048 2058 2 nd SIP/FIP update for RHR is due in 2018 NGS Site Lease Termination (12/23/19) 2-04-11 NGS Owners Initial Proposal - GDReeves

10. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 2-04-11 NGS Owners Initial Proposal - GDReeves

11. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) 2-04-11 NGS Owners Initial Proposal - GDReeves

12. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2-04-11 NGS Owners Initial Proposal - GDReeves

13. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2-04-11 NGS Owners Initial Proposal - GDReeves

14. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves

15. Key Dates 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2 nd SIP/FIP update for RHR is due in 2018 Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves

16. Proposed SCR Installation Period 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2 nd SIP/FIP update for RHR is due in 2018 SCR Design and installation Duration Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves

17. Installation Period Required if SCR is required in this BART 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2 nd SIP/FIP update for RHR is due in 2018 SCR Design and installation Duration Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves

18. IF Owners don’t take Risk of installing SCR without knowing NEPA outcome 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2 nd SIP/FIP update for RHR is due in 2018 SCR Design and installation Duration Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves

19. Proposed SCR Installation Period 2011 NGS Site Lease Termination (12/23/19) 3 3 3 2 2 2 1 1 1 Lease Negotiations and Approvals (12/31/11) NEPA Process (Comp - 12/31/17) 2 nd SIP/FIP update for RHR is due in 2018 SCR Design and installation Duration Legal Challenges (2 years ?) 2-04-11 NGS Owners Initial Proposal - GDReeves