Oct 13 rosehill reservoir_preliminary_overview_

Rosehill Reservoir RehabilitationOverview Presentation

October 2016

Project Team• Engineering & Construction Services

• Ken Koson, Sr. Project Manager• Toronto Water

• Mike Brannon, Manager, Water Supply• Henry Polvi, Sr. Engineer, Water Supply

• Public Consultation Unit• Kate Nelischer, Sr. Public Consultation

Coordinator• Associated Engineering

• Elia Edwards, Project Manager• Anna Comerton, Assistant Project Manager

Rosehill Reservoir - Background The open-topped Rosehill Reservoir was

commissioned in 1874 with a storage capacity of 156 Million Litres of potable water.

Aerial photo, 1947Open Reservoir, July 1936

Rosehill Reservoir – Background (cont.) In 1966, the reservoir was expanded to a storage capacity of 270.3 Million Litres and the structure was covered.

Reservoir Construction, 1965 Covered Reservoir, 1975

Rosehill Reservoir – Background (cont.) The Rosehill Reservoir is the largest of eleven

potable water reservoirs operated by the City of Toronto.• Consists of two cells (West and East)• Operates 24 hours per day and 365 days per

year• Stores and distributes potable water provided

by the Island Water Treatment Plant (WTP)• Primarily serves the downtown core and mid-

town• One of only two reservoirs in downtown area

(St. Clair Reservoir is the other)

Rosehill Reservoir – Distribution Map

Island WTP

Rosehill Reservoir

St. Clair Reservoir

Rosehill Reservoir and David A. Balfour Park and Trail

David A. Balfour Park and Trail

St. Clair Ave. E

Rosehill Ave. Mt P

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Rosehill Reservoir

Rosehill Reservoir Infrastructure

West Reservoir Cell

East Reservoir Cell

Valve House

Access House

Reservoir Structure

Potable Watermains

Storm Sewer System

Reservoir Footing Drain

System

Rosehill Reservoir – Rehabilitation Needs• The Rosehill Reservoir was last upgraded in 1966• Due to the age and critical nature of the reservoir

infrastructure, rehabilitation and upgrades are required to:• Ensure the structural integrity of the reservoir• Extend the service life of the reservoir• Bring the infrastructure to a state of good repair

• Additionally, a new reservoir roof waterproofing membrane is required to protect the stored potable water from infiltration and contamination

Rosehill Reservoir – Goal

The Rosehill Reservoir Rehabilitation project is a vital part of the City of Toronto’s drinking water infrastructure. The goal of this project is to bring the reservoir to a state of good repair and extend its service life.

While completing this important work, Toronto Water will work with other City Divisions to consider the community’s desires for the future of the reservoir roof and maintain the public’s enjoyment of the space.

Rosehill Reservoir Rehabilitation Project -Design Phase

Design Kick-Off Tender

Fall 2015

Winter 2017

Fall 2016

Spring 2016

Winter 2016

Summer 2016

Design Phase

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Spring 2017

Throughout the design phase, the project team delivered notices, sent information to the project email list, updated the project webpage, posted site signage, and met with stakeholder groups (including the SRA board and the Rosehill Garden volunteers).

Rosehill Reservoir – Existing Features

West Cell

East Cell

Little Park

Rosehill Garden

Playground

Perimeter pathway around

reservoir

Parks, Forestry & Recreation Storage Yard and Building

Vale of Avoca and

Ravine Trail

Public Washroom

Reservoir Features with Heritage Elements as Identified in Heritage Impact Assessment

Valve House

Access House

Public Washroom

Centennial Monument Sculpture

Centennial Plaque

Construction Phase 1 – Pedestrian Access (Approx. Summer 2017 to Summer 2018)

Temporary concrete walkway (pending TRCA

approval)

Existing pedestrian crosswalk


Sidewalk on north side of Rosehill Ave.

(sidewalk on south side will be closed

throughout construction)

Perimeter pathway

Little Park

East Cell operating to

maintain water supply

Park over West Cell closed and West Cell not

operating

Access point for deliveries to Valve

House

Temporary site access point for storm sewer rehab to minimize tree

impact

Main site access point

Construction Phase 2 – Pedestrian Access (Approx. Summer 2018 to Winter 2019)

Perimeter pathway

Little Park

Park over East Cell closed and

East Cell not operating

Park over West Cell closed but

West Cell operating


approval)


Existing pedestrian crosswalk with push-button activated lights



House


Temporary closure of playground required

during Phase 2 to safely accommodate storm sewer rehab (approx. 4 months)

Construction Phase 3 – Pedestrian Access (Approx. Winter 2019 to Fall 2020)

Park pathway

Little Park

Park pathway (open upon

re-opening of portion of park over West Cell)

Access via pathway to East and South of Reservoir from Rosehill Ave. restored during Phase 3 (weather dependent)

West Cell operating

Park over East Cell closed and

East Cell not operating


approval)


Existing pedestrian crosswalk with push-button activated lights



House

Playground open


Challenges

With any construction project, some dust and noise is inevitable. The contractor will be responsible for ensuring the work area is kept cleaned with weekly sweeping and wetting of the site and roads. Every effort will be made to reduce inconveniences to the community.

Truck Traffic During ConstructionTrucks will be required to dispose of some of the soil from the top of the reservoir and bring new soil when the work is done. The City is working to minimize the impacts of truck traffic on the neighbourhood using the following measures:• Approximately 40% of soil will be reused on-site• Trucks will follow a route designed to minimize

disturbance• A maximum of three trucks per hour will be

permitted• Truck traffic will be restricted to Monday to Friday

between 7 am and 7 pm, as per City by-laws• Daily road and sidewalk cleaning will be

implemented

Tree Removal and ProtectionOf the 258 trees within the reservoir area:• 189 trees will be preserved;• 14 trees will be removed in 2016 by City of Toronto Forestry due to

Emerald Ash Borer (not related to the Rosehill Reservoir Rehabilitation)• Approximately 55 trees will be removed and replaced.

We are confident the 189 trees can be preserved using a variety of construction techniques. Removed trees will be replaced as per City policy. Trees will not be replanted on top of the reservoir roof. We have tried to balance the need to improve the reservoir to provide safe drinking water with the preservation of the tree canopy.

Tree Removal and Protection (cont.)• Routine tree pruning within anticipated

construction limits performed by City of Toronto Forestry until construction begins

• The project team is working with staff managing memorial program to address any memorial trees, benches or rocks requiring removal and contacting sponsors.

Proposed Concept

Proposed Site Concept – Main Entrance

Proposed Site Concept – Main Entrance

Consultation and Communications• Notices of site works delivered to study area starting in late

2015• Email list established in late 2015 and growing• Project website established in late 2015 and updated

continuously with public notices and project FAQs • Website: www.toronto.ca/rosehill

• Site signage installed in Spring 2016• Meetings and conversations with stakeholder groups• Project business cards distributed on-site • Upcoming Public Open House

Project Signage

Anticipated Project ScheduleTask 2016 2017 2018 2019 2020

Q4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

Rosehill Reservoir Rehabilitation

DesignTender and Award of ContractConstruction

Stay Involved

There are a number of ways you can participate in the Rosehill Reservoir Rehabilitation project and stay updated:

• Submit comments via email or phone• Speak to a project team member• Sign-in to be added to the project email list or

contact Kate ([email protected])• Attend the upcoming Public Open House• Visit the project website for information and

updates: www.toronto.ca/rosehill

mailto:[email protected]

http://www.toronto.ca/rosehill

Proposed Concept

Government & Nonprofit

Oct 13 rosehill reservoir_preliminary_overview_