BASEMENT FLOODING PROTECTION PROGRAM CAPACITY ASSESSMENT STUDY – BUNDLE C: PROJECT DESCRIPTION
This study was undertaken to develop a remediation strategy following a Schedule B, Class EA process in response to surface and basement flooding which has occurred due to relatively extreme rainfall events. The study includes a comprehensive flow monitoring program with the installation and operation of 72 flow monitors and 14 rain gauges for 14 months in the sanitary and storm sewer systems to identify areas of high inflow and infiltration in the sanitary sewer system and calibrate both the sanitary and storm models. In addition to flow monitoring, an extensive field inspection including visual downspout surveys, GPS surveys of catch basins and low-lying areas was completed to develop an InfoWorks ICM model for the Areas 55, 58, 65 and 66. Separated sanitary and storm system models were developed using InfoWorks ICM to identify system deficiencies. The study also involves development and assessment of alternative remedial measures to reduce the risk of basement flooding.