AWWA ACE65170

The E.L. Smith Water Treatment Plant (WTP) is owned and operated by EPCOR Water Services Inc. EPCOR supplies drinking water to over one million people in the Edmonton Capital Region. Upgrades to the facility are designed to meet the growth in the region and ensure a secure high quality supply of water. At the project start, the plant firm capacity was 180 ML/d. The initial plant upgrade would be to increase firm plant capacity to 400 ML/d in order to meet the projected demand for the next 15 years. However, the new intake would be sized for a net raw water flow of 800 ML/d to provide for future needs. The original intake makes no provision for fish caught on the screens being safely returned to the river. Since the initial building of the E.L. Smith WTP in 1976 additional regulations have been implemented to ensure increased protection for aquatic life, wildlife, land and the environment. The presentation lists the regulations. Further clarification of these regulations necessitated working closely with a number of regulatory bodies such as the Department of Fisheries and Oceans (DFO), Transport Canada, Alberta Environment (AENV) and Alberta Sustainable Resource Development (ASRD). This cooperative effort allowed the project team to propose initial designs, refine them through positive feedback, to achieve a final design that satisfied the regulatory bodies and the environmental concerns. The presentation outlines design criteria, intake alternatives, selected raw water system schematic, selected intake alternative, selected screening alternative, computational fluid dynamics (CFD) modeling, physical modeling, and construction. Includes figures.