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Water Treatment Plant Condensation Remediation
Morrison Hershfield Toronto Island Water Treatment Plant
It had been reported that severe condensation problems in the Toronto Island Water Treatment Plant had led to moisture damage and mold growth in areas of the facility, and retrofits were required.  We provided peer review services to the City of Toronto to evaluate the proposed retrofit design so as to advise the City, prior to award of the construction contract, on the general suitability and completeness of the design with respect to addressing the condensation control issues at the plant.     

The Toronto Island Water Treatment Plant supplies fresh water to the City of Toronto's water system, and is part of the deep lake water district cooling system in operation in the downtown core.  Renovations had been completed at the plant to improve the summer and winter operation, however after two years of operation, excessive condensation had led to moisture damage and mold growth throughout the facility.

Morrison Hershfield completed a third-party review of the design prepared to remediate the conditions that contributed to the moisture problems after the 2004 renovations.  Following our review, we were retained as a technical advisor to the City of Toronto to provide ongoing technical support throughout the re-design, tendering, and construction process for the retrofit project to repair the moisture problems.

Work included: 

  • Participating in meetings with City staff at significant points in the project progression, including the presentation of Draft and Final Reports
  • Reviewing relevant information to determine if the retrofit design addressed the needs of the plant with respect to the HVAC and building envelope systems
  • Completing engineering calculations related to the mechanical and building envelope performance of the building based upon site operating conditions and constraints inherent with the operation of this specialized facility (i.e. unusually cold water pipes)
  • Reviewing the proposed work plan to conduct air leakage testing at the facility for value added considerations and technical content, and provide recommendations
  • Reviewing the Temporary Dehumidification System operating at the plant, including review of site, review of the system in place, preparation of a technical memo, and a meeting to discuss findings regarding the systems ability to prevent condensation within the facility until permanent system has been installed
  • Providing third party review of submitted bids
  • Providing technical advice on HVAC and building science
  • Acting as Technical Advisor to the City to ensure key technical aspects were met

 
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