Slide 1: Midtown Electricity Infrastructure Renewal Project
Midtown Project Midtown Electricity Infrastructure Renewal Project Presentation to the Rosedale Main Street BIA January 12, 2010
Slide 2: Need for Midtown Infrastructural Renewal
Midtown Project Need for Midtown Infrastructural Renewal • Toronto Hydro-Electric System (Toronto Hydro) and Hydro One Networks Inc. (Hydro One) have identified a need to strengthen the midtown high voltage electricity infrastructure to ensure a continued reliable supply of power to Toronto Hydro cu
Slide 3: Hydro One and Toronto Hydro Infrastructure
Midtown Project Hydro One and Toronto Hydro Infrastructure
Slide 4: Project Study Area and Alternative Route Options
Midtown Project Midtown Project Study Area and Alternative Route Options
Slide 5: Preferred Route – Option #1
Midtown Project Preferred Route – Option #1 The preferred route, Option #1 was selected to refurbish the transmission infrastructure and closely follows the corridor of the existing lines installed starting in the 1920s and cables in the 1950s
Slide 6: Assessment of Preferred Route
Midtown Project Assessment of Preferred Route Based on the technical and environmental criteria evaluated, Option#1 has been identified as the preferred route: • Utilizes the existing transmission corridor and is the most direct route from Bayview Jct to Birch Jct • Avoids most private properties an
Slide 7: Construction Options
Midtown Project Construction Options Trench Tunnel To replace this underground section, two construction methods were investigated: shallow trench following the existing CPR corridor, city road allowances and private properties or; a deep rock tunnel following the existing CPR corridor. Both methods
Slide 8: Advantages of Tunnel
Midtown Project Advantages of Tunnel • Eliminates need to acquire easements on residential land • Eliminates need to coordinate with CPR scheduled outages • Avoids environmentally sensitive areas (e.g. ravines, watercourses) • Limits construction to shaft locations rather then trenching on road allo
Slide 9: Shaft Locations for Tunnel Construction
Midtown Project Shaft Locations for Tunnel Construction End Shaft @ Bayview Main Shaft End Shaft @ Birch Intermediate Shafts 9
Slide 10: Exit Shafts
Midtown Project Exit Shafts • Two exit shafts are proposed: one at Bayview Jct (E1 or E2) and one at Birch Jct (A) • Shafts would be approximately 5 metres in diameter New station equipment will be installed at Bayview Jct and Birch Jct. The stations will expand approximately 50% in size on Hydro On
Slide 11: Birch Junction
Midtown Project Birch Junction At this junction, the midtown circuits switch from overhead lines to underground cables. Location of exit shaft for tunnel boring machine Birch Junction Birch Ave. at Yonge St.
Slide 12: Consultation and Communications
Midtown Project Consultation and Communications • Briefed local city councillors and residents’ groups • Held two rounds of public information centres in February 2009 and early December 2009 • Newspaper ads • Midtown newsletters • Notification mailed to residents120 m on either side of the preferre
Slide 13: Landscaping and Vegetation Management
Midtown Project Landscaping and Vegetation Management • Replace the existing 115 kV overhead circuits on the existing towers and re-energize an idle circuit – will require some vegetation removal, possibly including mature trees • Hydro One will work closely with affected residents, the City of Toro
Slide 14: Electric and Magnetic Fields (EMFs)
Midtown Project Electric and Magnetic Fields (EMFs) • EMFs are invisible forces that surround electrical equipment, power cords and power lines. You cannot see or feel EMFs. • Every time you use electricity and electrical appliances, you are exposed to EMFs at extremely low frequencies. EMFs produce
Slide 15: Environmental Assessment Requirements and OEB Approvals
Midtown Project Environmental Assessment Requirements and OEB Approvals Ontario Environmental Assessment Act This project is subject to the provincial Environmental Assessment Act, and it follows the requirements of the Class EA for Minor Transmission Facilities document Ontario Energy Board Act The
Slide 16: Project Schedule
Midtown Project Project Schedule
Slide 17: Midtown Project
PYRE YY Midtown Project