Watermains - Yonge Street Between Poyntz Avenue

and Avondale Avenue, Poyntz Avenue between Beecroft

Road and Yonge Street (Ward 10 - North York Centre)

The Works and Utilities Committee recommends the adoption of the following report (March 19, 1998) from the Commissioner of Works and Emergency Services:

Purpose:

The purpose of this report is to obtain Council=s authorization for the construction of a subtrunk watermain on Yonge Street from Avondale Avenue to Poyntz Avenue and on Poyntz Avenue from Yonge Street to Beecroft Road and to allocate the necessary monies from the City=s Sewer and Water Development Charges Fund.

Source of Funds:

Sewer and Water Development Charges Fund.

Recommendations:

It is recommended that:

(1)the City share 25 percent of the cost of upgrading the existing 250 mm watermain to a 400 mm watermain on Yonge Street from Poyntz Avenue to Johnston Avenue at an estimated cost to the City of $50,000.00, and the work be undertaken by the Toronto Transit Commission in conjunction with the Yonge-Sheppard Subway Station construction;

(2)the upgrading of the local watermains to 400 mm watermains on Yonge Street from Johnston Avenue to Avondale Avenue and on Poyntz Avenue from Yonge Street to Beecroft Road at an estimated cost to the City of $500,000.00 and the work be undertaken by the Toronto Transit Commission in conjunction with the Yonge-Sheppard Avenue Subway construction;

(3)the City=s share of the costs amounting to an estimated $550,000.00 be charged to available funds in the Sewer and Water Development Charges Fund; and

(4)the appropriate City officials be authorized and directed to take the necessary action to give effect thereto.

Discussion:

To provide adequate water pressure and flows in the future for the North York South Downtown, a subtrunk watermain loop on the east and west sides of Yonge Street extending from Sheppard Avenue to Avondale Avenue was identified as being required. This subtrunk watermain has been installed in stages as development has proceeded and has been co-ordinated with road construction. The subtrunk watermain has now been constructed on sections of Beecroft Road from Sheppard Avenue to Poyntz Avenue in conjunction with the construction of the road.

The installation of the subtrunk watermain to provide adequate water supply to developments in the North York South Downtown should be continued on Poyntz Avenue from Beecroft Road to Yonge Street and on Yonge Street from Poyntz Avenue to Avondale Avenue.

The Toronto Transit Commission has advised that the construction of the Yonge-Sheppard Subway Station is to commence early this summer and is scheduled to be completed by summer 2001. The subway station will occupy almost the entire width of the Yonge Street road allowance and will be constructed by cut and cover method from Harlandale Avenue to Johnston Avenue. In order to facilitate the construction of the Yonge-Sheppard Avenue Subway Station, the local watermains on Yonge Street will be relocated.

The relocation of the existing local watermains on Yonge Street from Sheppard Avenue to Johnston Avenue is the responsibility of the Toronto Transit Commission. However, since a 400 mm subtrunk watermain is required by the City on Yonge Street from Poyntz Avenue to Avondale Avenue and on Poyntz Avenue from Yonge Street to Beecroft Road in the future, the City is to fund the additional costs for upgrading the watermain from 250 mm to 400 mm on Yonge Street from Poyntz Avenue to Johnston Avenue to be undertaken by the Toronto Transit Commission. The estimated cost of the City=s share for the watermain on Yonge Street from Poyntz Avenue to Johnston Avenue is $50,000.00. The work will be carried out by the Toronto Transit Commission as part of the subway contract.

The construction of a 400 mm subtrunk watermain on Poyntz Avenue from Yonge Street to Beecroft Avenue and the extension of the proposed watermain on Yonge Street south from Johnston Avenue to Avondale Avenue will provide adequate water pressure and flows to the North York South Downtown, including the Wittington Properties Limited and the Anndale Properties Limited/Crestview Investment Corporation plans of subdivision located immediately east of Yonge Street and south of Avondale Avenue. In order to minimize disruption to traffic and neighbouring properties and avoid scheduling conflicts, the watermain construction could be undertaken by the Toronto Transit Commission in conjunction with the construction of the Yonge-Sheppard Subway Station. The estimated cost of the work is $500,000.00.

Conclusion:

The extension of the existing 400 mm subtrunk watermain on Beecroft Road at Poyntz Avenue eastward on Poyntz Avenue to Yonge Street and southward on Yonge Street from Poyntz Avenue to Avondale Avenue will provide adequate water supply for the North York South Downtown. The installation of the proposed subtrunk watermain by the Toronto Transit Commission in conjunction with the subway work would be an efficient method for coordinating the works.

Contact:

S. Bertoia, P.Eng., Director of Engineering

Phone: 395-6235, Fax: 395-6200

E-mail: sbertoia@city.north-york.on.ca.

 (A copy of the plan appended to the foregoing report has been forwarded to all Members of Council with the agenda for the Works and Utilities Committee meeting of March 25, 1998, and a copy thereof is on file in the office of the City Clerk.)