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Stormwater Management – Saint-André East – City of Granby

Type of initiative FCM Green Municipal Fund - Capital Project
Sector Water
Project value$3,776,038
Project Type Capital Project
Sub Sector Stormwater Management
Grant amount$140,000
Program type GMF
Municipality Ville de Granby, QC
Loan amount$1,400,000
Status Fully Disbursed
Population 69,025
Project timeline 2012 - 2013
Project number 13023

Description

The City of Granby is planning to solve the sewer backup problem in the block bound by Saint-André East, Grove, Bellevue and Lansdowne using an innovative and cost-effective stormwater management technique applied in new developments, rather than the traditional pipe replacement approach. For this project, Granby selected three stormwater management techniques: decreasing impervious pavement from 12 m to 7 m; installing a below-ground retention basin; and building a vegetated swale along the roadway. The advantage of these techniques is that the existing system will remain in place, while eliminating site runoff for the 90th percentile 24-hour rainfall. The city will also build a sidewalk/bike path along the main arteries in the block to promote active transportation to schools and places of work. This innovative project is based on surface water management measures normally used in new developments. Using these techniques in built environments is a first in Quebec, and possibly even in Canada. It will prove that it is indeed possible to apply green solutions to correct problems without replacing existing systems that are still functional. These measures could be fully or partially replicated in other areas of the City that have the same sewer backup problem as well as by other municipalities. The project has high potential for replication by all Canadian municipalities. (Project description from original funding application)

Project results

Environmental outcomes

  • Improved stormwater management
  • Improved stormwater quality
  • Decreased heat island effect

Social outcomes

  • Protection/improvement of public human health
  • Increased public safety and security
  • Improved public education or awareness
  • Development of local programs
  • Increased civic engagement in community issues

Economic outcomes

  • Increased job creation or retention
  • Increased municipal attraction
  • Improved demand management
  • Partnership development

Lessons learned

  • Initiative support
  • Stakeholder and community engagement
  • Data and reporting
  • Technical – Project specific

Applicant

Ville de Granby, QC