1. Project Update Late 2005 the PSANI Policy Group reviewed mitigation efforts to reduce transmission curtailments in the Puget Sound Region Late 2005 the PSANI Policy Group reviewed mitigation efforts to reduce transmission curtailments in the Puget Sound Region Puget Sound Area Groups (PSASG) initial study identified three portfolios of improvements Puget Sound Area Groups (PSASG) initial study identified three portfolios of improvements Additional subsequent projects were identified through additional study work. Additional subsequent projects were identified through additional study work.

2. Completed Portfolio #1 Projects Arm NI Separation Scheme at 100 MW of S-N flow for N-2 Monroe-Custer. (BCTC) Arm NI Separation Scheme at 100 MW of S-N flow for N-2 Monroe-Custer. (BCTC) Bothell-Snohomish #2 upgrade (BPA) Bothell-Snohomish #2 upgrade (BPA) Upgrade Snohomish Bus Sectionalizing Breaker (BPA Upgrade Snohomish Bus Sectionalizing Breaker (BPA Additional 500 kV breaker at Echo Lake (BPA) Additional 500 kV breaker at Echo Lake (BPA) Reconductor Bothell-Sammamish 230 kV line (PSE & SCL) Reconductor Bothell-Sammamish 230 kV line (PSE & SCL)

3. Portfolio #1 Projects Portfolio #1 Projects in Development Portfolio #1 Projects in Development Refine RAS Controller/Arming (BPA) Refine RAS Controller/Arming (BPA) Additional BCTC RAS communication capability Additional BCTC RAS communication capability Covington-Berrydale 230kV (PSE) Covington-Berrydale 230kV (PSE) Portfolio #1 Projects Deferred Portfolio #1 Projects Deferred Uprate PSE 115 kV lines (PSE) Uprate PSE 115 kV lines (PSE) Horse Ranch tap to Snohomish (BPA) Horse Ranch tap to Snohomish (BPA) Tap Bothell-Sammamish into Snoking (BPA) Tap Bothell-Sammamish into Snoking (BPA)

4. Additional Projects Completed Covington-Creston to Covington Auxiliary Bus (BPA) Covington-Creston to Covington Auxiliary Bus (BPA) Reconductor Bothell-Snoking 230 kV sections Reconductor Bothell-Snoking 230 kV sections BCTC arming RAS at lower NI levels BCTC arming RAS at lower NI levels Snoking-Maple Valley reconductored (BPA) Snoking-Maple Valley reconductored (BPA) SCLs 115kV line upgrades (SCL) (ongoing) SCLs 115kV line upgrades (SCL) (ongoing) Snohomish Delta Switching Snohomish Delta Switching SCL Mass and Bothell Tfr switching SCL Mass and Bothell Tfr switching

5. Future Work South King County Transformer South King County Transformer RAS Refinements RAS Refinements Existing: multiple arming and generation levels Existing: multiple arming and generation levels Additional RAS: separation schemes Additional RAS: separation schemes Echo Lake-Monroe Cutplane improvements Echo Lake-Monroe Cutplane improvements South of Sedro Improvements South of Sedro Improvements