Study update of storm sewer outfalls for Quality and Erosion Control Enhancement

completed

This project will complete a review of 44 storm sewer outfalls and 41 existing storm water ponds. The Town of Whitby conducted a stormwater outfall study in 2001 to identify any locations where any additional quality and erosion control enhancement could be provided to improve the quality of the water released from the outfalls to the creek. The study revealed that the majority of the outfalls were constructed before the concept of stormwater quality control existed, didn’t have any quality control mechanism and recommended quality enhancement in the form of ponds at a few locations, but left many locations without any enhancement due to constructability or land issues, including non-availability of emerging technology at that time (ex. mechanical structures such as oil and grit separators and LID technology). Based on the original study six new stormwater facilities had been constructed under the pond program. Under this project, all the outfalls will be revisited, the report will be updated and new prioritized locations will be identified for quality enhancement, which will assist the Town to prepare a new pond retrofit program and implement it under capital works or though any other funding opportunities.