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CANADIAN PACIFIC RAILWAY
Stormwater and Wastewater Management Study
Winnipeg, Manitoba
CHALLENGE: As a due diligence step, Morrow was contracted by Canadian Pacific Railway to determine the potential impacts associated with stormwater discharge off of the site. The study was required to identify the pathways traveled by stormwater and wastewater as it enters, flows through and then exits the Winnipeg Yard and to determine the effectiveness of surface water management infrastructure associated with the historic rail yard.
SOLUTION: The Yard is a five km long rail yard located in Winnipeg, Manitoba. To complete the task, Morrow undertook an extensive review of the current and historical documentation of underground utility structures in the area. The review was followed by a detailed site inspection and site survey. The survey identified principal high and low points of existing ditches to determine flow direction, the location of all manholes and catch basins, pipe diameters and invert elevations, existing fuel storage, handling and distribution facilities, location of on-site treatment systems such as oil/water separators, sewage holding tanks, stormwater lagoons, interceptors and wastewater treatment plants. The horizontal locations of the site features were surveyed using a global positioning system (GPS), and the vertical elevations of the site features determined using total station survey equipment. The drainage basin of all outflows was delineated based on available information and all stormwater outlet points identified during the study. The outputs for the study were a series of CAD drawings illustrating the infrastructure to enable the client to effectively utilize the study information for stormwater management purposes.
Morrow also sampled the effluent at discharge points to the City sewer system for laboratory analyses to allow for comparison with the City of Winnipeg Sewer By-law discharge criteria.
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