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Niagara River Remedial Action Plan Stage 2 Update Report

Niagara River Remedial Action Plan Stage 2 Update Report

Appendix 7: Pollution

Appendix 7: Pollution Prevention and Control Planning in the Niagara River AOC The Ministry of the Environment’s Procedure F 5-5 requires municipalities to complete a Pollution Control Planning (PCP) study to meet the goals of the procedure. Many municipalities have completed PCP studies within Areas of Concern to address a variety of issues. Similarly, in the Niagara River AOC, PCP studies have been completed in Fort Erie, Niagara-on-the-Lake, Niagara Falls and Welland. All of these studies concluded with extensive recommendations for new facilities, upgrades to existing facilities and improved operations. 153 Below is a brief summary of initiatives being undertaken by municipalities in the Niagara River AOC: City of Welland: Over the past 30 years, the City has partially separated many of their combined sewers and effectively eliminated overflows to the Welland River during dry weather periods. However, sewage flows still increase dramatically during wet weather periods due to groundwater infiltration and stormwater inflow. Currently, there are still approximately 24 CSO structures that discharge combined sewage into the Welland River during wet weather periods. In general, CSO discharges contribute a significant portion of event loadings for most pollutants into the Welland River. Computer modeling of the City of Welland sewer system indicates that currently only 64% of wet weather flow is captured and treated during an average year. The City of Welland is committed to achieving at least 90% control and is required to comply with MOE’s CSO policy (i.e., Procedure F 5-5) as soon as possible. In order to do that, the City initiated a study to develop a comprehensive and strategic Pollution Prevention and Control Plan. The objective of this project is to provide a cost effective and practical long-term solution for CSO reduction to meet the requirements of Procedure F 5-5 in the interim and ultimately to meet the requirements of Procedure F 5-1 (i.e., virtual elimination of CSOs). In Phase 2 of the EA Processes, the alternative to Construct Primary Treatment Facility was defined as the preferred solution for CSO control. 154 In 2009, the City of Welland and Niagara Region will jointly be completing a large sewer separation program (Ontario/Atlas/Wellington) to address basement flooding and CSO discharges to the Welland River. Following the completed sewer separation, the City will be undertaking a CSO flow monitoring/ sampling program to re-assess the CSO capture rate and wastewater quality. It is expected that this sewer separation project will have a significant impact on the design and cost of the CSO high rate treatment project. 155 The City has submitted an updated Pollution Prevention and Control Plan of implementation activities from 2006 through to 2015. 156 Also, as of early 2006, the City has completed 90% residential downspout disconnections in an effort to reduce inflow/infiltration to the sanitary sewer system. 157 153 Environment Canada. Integrated Urban Water Pollution Control Planning – A Workshop in Conjunction with CAWQ Symposium. Canada Centre for Inland Waters. Feb.10-11, 2004. 154 City of Welland Combined Sewer Overflow Study. June 2003. Environmental Study Report. Prepared by R.V.Anderson Assoc. Ltd. & XCG Consultants. 155 Communication from Norm Desilets, City of Welland. February 8, 2006. 104

Niagara river remedial action plan stage 2 update Town of Fort Erie: The Town of Fort Erie is serviced by separate sanitary and storm sewers. However, in the older areas of the Town, foundation drains and, in some cases, roof leaders are still connected to the sanitary sewer system. In addition, an aging sanitary sewer system and high groundwater levels in some areas have resulted in significant wet weather flows in the sanitary sewer system. The result has been overflows at major pumping stations during rainfall events. The Town of Fort Erie initiated an update to the Pollution Control Planning and Infrastructure Study in 2003 (completed by end of 2004). The original PCP and Infrastructure Study was completed in conjunction with the Region of Niagara in 1990. The overall goal of the update is to develop measures to mitigate combined sewer overflows (CSOs) and develop a comprehensive and strategic pollution control and infrastructure plan for the Town of Fort Erie. 158 By early 2006, the Town had completed 90% residential downspout disconnections in an effort to reduce inflow/infiltration into the sanitary sewer system and is commencing the disconnection of residential foundation drains. 159 City of Niagara Falls: The Muddy Run/Central Pumping Station CSO in the City of Niagara Falls accounts for approximately 40% of the total combined sewer overflow load to the Niagara River for an average year of rainfall. This particular overflow discharges directly to the Niagara River. The City’s objective is to reduce the amount of City derived pollution from combined sewer overflows and stormwater discharges into the Niagara River. In co-operation with Environment Canada, Niagara Region and MOE, the City of Niagara Falls undertook an investigation of high-rate treatment in the form of vortex separators to control (minimize or eliminate) the combined sewer overflow at the Muddy Run/Central Pumping Station CSO site. 160 In 2007, the Niagara Region and City of Niagara Falls completed construction of a new joint Central Pump Station - High Rate Treatment (HRT) facility. Associated Engineering was retained as the consultant for the design and contract administration of the project. Incorporated into the construction of the new Central PS/HRT facility was a new Muddy Run Pumping Station, forcemains for both pumping stations, decommissioning of three pumping stations and construction of sanitary and storm sewers to allow for the separation of combined sewers and redirection of the sewers to new outlets all at a cost of $26.6 million. 156 Letter from Norm Desilets, City of Welland, to the Ministry of the Environment, dated March 23, 2006. 157 Reported at meeting of NWQPS CSO Study Panel on March 2, 2006 158 XCG Consultants Ltd. March 4, 2004. Interim Report – Town of Fort Erie Pollution Control Planning Study Update. 159 Reported at meeting of NWQPS CSO Study Panel on March 2, 2006. 160 City of Niagara Falls High Rate Treatment Facility Feasibility Study. June 1999. Final report. Prepared by CH2M Gore & Storrie Limited. 105

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