Findings from a recent pilot project that evaluated aeriation systems in the McLaughin stormwater management facility (SWMF) have resulted in the identification of a preferred method for aeration of these facilities throughout Spruce Grove. 

The McLaughlin SWMF aeration pilot project included both bottom, or subsurface, diffusers and a floating fountain to circulate water from both directions.  

Stormwater aeration is important because it helps increase the decomposition rate of the organic sediment that can build up at the bottom of the facility, reducing oxygen levels and disrupting the ecosystem. Aeration systems help circulate facility water to increase oxygen levels, promote faster organic decomposition, and reduce sediment buildup.  

Results from the pilot project, which were presented to Spruce Grove City Council during a February 9 Council meeting, demonstrated that subsurface diffusers were more efficient, cost effective, and compatible with nearby wildlife. The floating fountain required considerably more maintenance, making it less effective and more costly to operate. 

Based on these findings, Council approved the recommendation to adopt subsurface diffuser aeration as the preferred approach for stormwater management facilities in the community due to their efficiency, lower operational cost, and compatibility with existing water-quality programs. Additionally, Municipal Development Standards will be developed for fountain installations for circumstances where fountains are desirable in new development. 

The existing fountain aeriation equipment has already been removed from the McLaughlin SMWF as part of the winterization required for it. There are plans to try and repurpose the fountain aeration equipment in another SWMF if a suitable location can be found, and potential locations are still being evaluated to determine suitability. Residents in McLaughlin will get notices as to why the fountain will not be re-installed. Should a suitable location be found for the relocation of the fountain, residents in the area will be notified prior to the work occurring. 

Learn more about stormwater management.