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Trunk Sewer Condition Assessment

REGION OF PEEL

The Region of Peel (population 1,250,000) is located along the west side of Toronto and encompasses the Cities of Mississauga, Brampton and Caledon. Andrews Infrastructure was retained bythe Region to carry out a multi-year, phased trunk sewer inspection and condition assessment program to meet long term planning needs and objectives.   This multi--year program included the following activities:

  • Inspection of 250,000 m of sewers (750 mm to 3050 mm diameter)
  • Inspection of some 875 manholes and specialty chambers
  • Sonar inspection of multiple siphon locations
  • Concrete coring and material testing at select locations
  • Hydraulic performance evaluation at identified hot-spots

Andrews Infrastructure provided all inspection services and other field investigation services over the duration of the inspection program. This included regular and on-going coordination activities with Regional staff and other related authorities. In addition, the firm compiled, analyzed and evaluated inspection findings; identified trends and prepared detailed annual inspection reports. These later reports provided the basis upon which the Region planned and scheduled short-term and long term maintenance and repair work and upon which annual budget updates were prepared. All inspection findings were reviewed and translated into condition ratings based on the well-known WRC five-state condition rating scheme. All data was generated and compiled based on WRC standards. An overall condition assessment mapping system was developed for integration into the Region’s regular process. This system was used to develop a Trunk Sewer Condition Assessment Atlas for the entire 250 km system at the end of the program and which is now used by the Region for ongoing planning and project programming.

   
         

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