Environmental Services has incorporated the investigation regarding the water infiltration incident of July 14th into the overall mitigation strategy for the Lisgar community.

Current Activities

  • The leakage testing of storm sewer lining was initiated today in the Golden Locust Drive area.  It will be conducted over a period of 24 to 36 hours, weather permitting, by the consultant with support from City staff and contractors.
  • Our consultant is continuing to analyze the data downloaded from its network of monitoring sites and is preparing a memo to staff summarizing their observations, targeting this Thursday or Friday.
  • Works Operations and Maintenance is continuing with its weather monitoring practices and the High Water Protocol for the deployment of FDC pumps as required.
  • CCTV inspections and flushing of the FDC sewer system is ongoing.  The inspection reports are being forwarded to the consultant for review as they come in.

Next Steps

  • Staff will work with the consultant on the findings of their monitoring data from the July 14th incident to develop additional next steps for the investigation and mitigation plan.
  • Our consultant will analyse the results of the storm sewer system leakage testing and will provide recommendations to staff on next steps for lining works.
  • Staff will prioritize and address any maintenance issues that are identified by the CCTV inspections.
  • The consulting will continue with design of the Trench Dewater System at Black Walnut Trail and Cactus Gate and will evaluate options in consideration of data collected from the incident on July 14th.

Staff will work with the consultant on the system design options and considerations over the next few weeks.