Townsend Avenue Reconstruction –Detailed Design of Townsend Avenue and Stormwater Drainage

Public MeetingAldershot ArenaJune 13, 2013

Mark Bassingthwaite, P.Eng.Project ManagerCole Engineering Group Ltd.70 Valleywood Dr.,Markham, ON L3R 4T5Phone: 905-940-6161Fax: 905-940-2064E-mail: mbassingthwaite@coleengineering.ca

Arif Shahzad, P.Eng.Project ManagerCity of Burlington426 Brant St., P.O. Box 5013Burlington, ON L7R 3Z6Phone: 905-335-7600Fax: 905-335-7663Email: arif.shahzad@burlington.ca

Please sign in on the sheet provided, then feel free to walk around and view the displays.

If you have any questions, our representatives will be pleased to discuss the project with you.

Comment sheets are provided for those who wish to provide comments in writing. Please either place your completed sheets in the Comment Box or mail / fax them to one of the identified Project Team Members (see below) by June 19, 2013.

Thank you for your involvement in this project.

For additional information, please contact one of the following Team Members:

Welcome to the Townsend Avenue Reconstruction – Detailed Design of

Townsend Avenue and Stormwater Drainage

Public MeetingAldershot Arena June 13, 2013

The presence and configuration of sidewalks, shoulders, road widths, ditching and lay-bys on Townsend Avenue vary from block to block for a majority of the corridor. As a result the Townsend Avenue corridor currently has a very inconsistent cross section throughout.

Townsend Avenue currently serves three (3) schools with Glenview Public School fronting this section of the road and attracts a number of pedestrians including many children on a daily basis.

The accommodation of pedestrians along Townsend Avenue is currently provided in a variety of ways including paved shoulders with temporary curbs, paved and marked shoulders and asphalt sidewalks.

Project Background and Purpose

Townsend Avenue is a 20 m Municipal Right-of-Way consisting of varying road widths, paved shoulders, asphalt sidewalks, asphalt lay-bys and roadside ditches throughout the corridor.

The purpose of this project is to replace and reconstruct Townsend Avenue to with the Town of Burlington standards, including sidewalks for safe pedestrian traffic and concrete curb and gutter.

Replacement of infrastructure and improvements to storm drainage will also be included during detailed design the reconstruction needs of the road presents the opportunity to do so.

Townsend Avenue was identified in the Aldershot Storm Water Master Plan as a location in which proposed drainage improvements may be implemented.

Project Background & Purpose

The existing pedestrian facilities are generally only provided on one side of Townsend Avenue. Pedestrian facilities are currently located on the north side of Townsend Avenue from Lasalle Park Road to Shadeland Avenue and on the south side of Townsend Avenue from Shadeland Avenue to Eagle Drive.

There are currently no cycling facilities on Townsend Avenue.

Townsend Avenue has overly deteriorated asphalt road surface conditions, aging ditches and shallow, failing culverts.

The current layout of Townsend Avenue contains ill-defined shoulders and/or temporary parking, uses temporary barriers with hazardous drainage paths and poorly implemented pedestrian walkways.

The absence of proper sidewalks, curb and gutter promote pedestrians walking on the road, rather than the assigned pedestrian walkways.

Project Background & Purpose

The objectives of the project are to:

• Reconstruct asphalt road while improving the safety and consistency of the road cross-section of Townsend Avenue between Lasalle Park Drive and Eagle Drive; and,

• Replace aging infrastructure with new, sustainable storm water infrastructure. The objective of this Public Meeting is to obtain your input and opinions related to potential design alternatives for this project;

The City of Burlington is considering the urbanization of Townsend Avenue cross-section by constructing a full 8 m asphalt road with sidewalks, curbs and gutters to improve safetyon the road along with drainage improvements.

Objectives of the Project and Public Meeting

The proposed road improvements will consist of the reconstruction of Townsend Avenue including curb and gutter with a consistent cross section throughout the corridor.

Sidewalks are proposed, however the locations and configuration of the sidewalks will be confirmed following the PIC.

Proposed stormwater management works include relief pipes to provide extra capacity in the storm system and Low Impact Development (LID) techniques to reduce runoff volumes and to improve storm water quality.

LID techniques have been evaluated and options that suit the proposed road cross-section are presented within this Public Meeting.

Proposed Works

The intended cross section for Townsend Avenue will be based on the City of Burlington Standard 20 m Urban ROW consisting of an 8 m paved roadway, curbs and sidewalks.

The City’s Standard cross section will be slightly modified to suit existing constraints on Townsend Avenue such as existing hydrants to the north of Townsend Avenue and existing Hydro Poles and Aerial lines on the south side of Townsend Avenue.

The proposed cross section will include a provision for formal concrete sidewalks. The location and number of sidewalks (1 or 2) will be confirmed following the PIC using the City’s current sidewalk warrants and pedestrian volumes currently being collected.

Proposed Road Cross-Section

A review was undertaken to determine if bike lanes would be suitable on Townsend Avenue. Due to existing utility locations and impacts to the existing residential frontage within the ROW the additional road width associated with the addition of bike lanes to the corridor was found not to be preferred.

The proposed cross section for Townsend Avenue is shown below including a reduced boulevard width before the proposed sidewalks to limit impacts to existing utilities and existing residential grading. The proposed cross section may also includepotential for lay-bys where possible along the corridor.

All Options:

Implement a standard 8.0 m pavement width as per City Standard Urban 20 m ROW.

Reduce the boulevard width between sidewalk and curb to 1.0 m from 3.0 m (City standard) to mitigate relocations of existing hydrants (north) and hydro poles (south).

Cross-Section Alternatives

Option #1: One Sidewalk (location varies)

Provide one (1) sidewalk on the north side from Lasalle Park Road to Shadeland Avenue; and,

Provide one (1) sidewalk on the south side from ShadelandAvenue to Eagle Drive.

Option #2: One Sidewalk (north side only)

Provide one (1) sidewalk on the north side for the entire corridor.

Option #3: Two Sidewalks (north and south sides)

Provide two (2) sidewalks on both the north and south side for the entire corridor.

Option #4: Two Sidewalks in School Area, One Sidewalk outside school area

Provide one (1) sidewalk on the north side from Lasalle Park Road to Glenwood Avenue;

Provide two (2) sidewalks on both the north and south side from Glenwood Avenue to Shadeland Avenue in the vicinity of Glenview Public School; and,

Provide one (1) sidewalk on the south side from ShadelandAvenue to Eagle Drive.

Cross-Section Alternatives

Low Impact Development (LID) techniques are used to improve stormwater quality by filtering pollutants through vegetation and soils prior to discharging into storm sewers and/or the receiving creek.

LIDs can provide moderate improvements in flooding for frequent, small storm events by infiltrating and storing water in the soil, reducing discharge from rainfall.

Effectiveness of LIDs depends on the types of soils found on site; soils along Townsend Avenue are sandy and therefore ideal for infiltration and incorporation of LIDs.

Depth to groundwater must be confirmed prior to implementing some LIDs.

Examples of LIDs which can be incorporated into the urbanization of the Townsend Avenue cross-section, pending design confirmation, include:

• Exfiltration Pipes;• French Drains and Dry Wells;• Porous Pavement;• Rain Gardens or Bioretention Facilities; and,• Stormwater Tree Planters.

Low Impact Development - Overview

Low Impact Development - Alternatives

Various layouts of LID BMPs to assist with stormwater retention and quality control will be investigated to remediate 25 mm to 5-year minor storm events.

Intermediate storm events, 10-year to 25-year storms, will be directed to a proposed overflow storm sewer, which outlets to East Teal Creek.

Major storms over the 25-year storm event, will continue to discharge to the existing creek systems, but with reduced flows.

Existing minor erosion in East Teal Creek channel will be remediated, subject to easement acquisition.

Storm Drainage Improvements

Comments received from this Public Meeting will be considered along with those received from the review agencies and landowners in order to finalize the Detailed Design.

Potential permanent and temporary easements (if necessary) will be discussed with the affected landowners.

Thank you for your participation!

The Next Steps . . .