Draft Environmental Study Report (ESR) for the Leaside to Main Infrastructure Refurbishment Project

Earlier  this year, Hydro  One Networks Inc. (Hydro  One) initiated a Class  Environmental Assessment (EA) for the Leaside  to Main Infrastructure Refurbishment Project, to replace aging  underground transmission cables  in eastern  downtown Toronto. This  work  is required to maintain a safe and reliable

supply  of electricity to the area. Hydro  One has now completed the draft  Environmental Study  Report  (ESR), which  will be available for a 47-day  public  review  and comment period  beginning on September 29, 2016.

The proposed undertaking consists of:

  • Replacing the underground cable  between Leaside  Transformer Station  (TS) and Todmorden Junction (JCT). Hydro  One has selected  a preferred routing option  as shown  on the map and documented in the draft  ESR; and
  • Replacing the underground cable  between Main TS and Lumsden JCT along  the existing route, as no feasible alternatives were identified.

The replacement of underground cable  is subject  to the Class  EA for Minor  Transmission Facilities (Ontario Hydro, 1992). Pending the necessary approvals, construction could begin  in mid-2017.

Our consultations on this project  have included the replacement of overhead shield  wire  between Todmorden JCT and Lumsden JCT, which  Hydro  One had originally planned to complete at the same time as the underground cable  replacement. The work  on the shield wire  has now been postponed and will no longer  be assessed in the draft  ESR. Hydro  One is currently re-evaluating this work  to identify opportunities to combine the shield  wire  replacement with  future refurbishment activities that may be required in the same  area. The release  of the draft  ESR, originally scheduled for early September, was deferred to incorporate this change. Nearby  residents and stakeholders will be notified when  more information about  the overhead line work  is available.


The draft  ESR will be available for a 47-day  public  review  and comment period  from September 29, 2016 to November 14, 2016.

The draft ESR can be viewed at www.HydroOne.com/projects/LeasidetoMain/, and hard copies will be available for review at the following locations:

Thorncliffe Toronto Public  Library
48 Thorncliffe Park Drive
Tel: 416-396-3865

Dawes Road Toronto Public  Library
416 Dawes  Road
Tel: 416-396-3820

Main Street Toronto Public  Library
137 Main Street
Tel: 416-393-7700

S. Walter Stewart Toronto Public  Library
170 Memorial Park Avenue
Tel: 416-396-3975

Written questions or comments on the draft ESR must  be received by Hydro One no later than 4:30 p.m. on November 14, 2016. PLEASE ADDRESS YOUR  CORRESPONDENCE TO:

Paul Dalmazzi, Environmental Planner
Hydro  One Networks Inc.
483 Bay Street, North  Tower, 14th Floor
Toronto, ON M5G 2P5
Email: moc.e1701958446nOord1701958446yH@sn1701958446oital1701958446eR.yt1701958446inumm1701958446oC1701958446

Hydro One will respond to and make best efforts to resolve any issues raised  by concerned parties during the public review  period. If no concerns are expressed, Hydro One will finalize the ESR and file it with  the Ministry of the Environment and Climate Change.

The project  will then be considered acceptable and may proceed as outlined in the ESR.

The Environmental Assessment Act has provisions that allow interested parties to ask for a higher level of assessment for a Class Environmental Assessment project if they feel that outstanding issues have not been adequately addressed by Hydro One. This is referred to as a Part II Order request. Such requests must  be addressed in writing to the Minister of the Environment and Climate Change, as well as the Director of the Environmental Approvals Branch  and received no later than 4:30 p.m. on November  14, 2016, at the following addresses:

Minister of the Environment and Climate Change
77 Wellesley Street  West
11th Floor, Ferguson Block
Toronto, ON M7A 2T5
Email: ac.oi1701958446ratno1701958446@CCEO1701958446M.ret1701958446siniM1701958446

Director, Environmental Approvals Branch
Ministry of the Environment and Climate Change
135 St. Clair  West, 1st Floor
Toronto, ON M4V 1P5
Email: ac.oi1701958446ratno1701958446@negB1701958446ISAAE1701958446

Please note that a duplicate copy of a Part II Order  request must also be sent to Hydro One at the address noted.