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Basement Flooding Improvement Program

Basement Flooding Improvement Program. Town Hall Meeting, Ward 33 May 21, 2009. Background. Major flooding reported in August 19, 2005 City workplan to address areas of chronic flooding; 31 study areas Study Areas 29 and 30 among first to be examined Studies were completed in August 2008.

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Basement Flooding Improvement Program

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  1. Basement Flooding Improvement Program Town Hall Meeting, Ward 33 May 21, 2009

  2. Background • Major flooding reported in August 19, 2005 • City workplan to address areas of chronic flooding; 31 study areas • Study Areas 29 and 30 among first to be examined • Studies were completed in August 2008

  3. Our Findings • Our sewer system performs as designed (for “normal” storm conditions) • During extreme storms – sanitary sewer system is overloaded; surface flooding on private property • Many older developed areas do not have proper overland flow routes; resulting in low points with no outlet for water City has adopted a higher level of protection against basement flooding for both the sanitary & storm sewer systems

  4. Overland Flow Paths Peckham Ave. Homewood Ave. Cactus Ave. Patricia Ave.

  5. General Surface Cactus Ave. Patricia Ave.

  6. Overland Flow Paths Peckham Ave. Homewood Ave. Cactus Ave. Patricia Ave.

  7. Recommended Solutions • Lot Level Controls • Downspout disconnection • Proper lot grading • Installation of backwater valves on sanitary lateral • Capping off storm laterals & installation of sump pump • Repair cracks in foundation walls & sealing window wells • Covering basement stairwell • Disconnecting “illegal” sanitary sewer connections • Need homeowners to help take action!

  8. Recommended Solutions • Surface Flow Controls • Catchbasin Inlet Control • Increased No. of Catchbasins • Sealing Maintenance Hole Covers • Flow Path Diversion

  9. Recommended Solutions • Pipe Controls (Storm and Sanitary) • Increasing Sewer Pipe Size • Adding new sewers (twinning)

  10. Recommended Solutions • Storage for Sanitary and Storm • Underground tanks within the sewer system • Underground storage tank: • - Old Sheppard Park, Dallington Park, Pinto Park • Dry pond at Muirhead Park

  11. City-wide Implementation Plan • Over 300improvement works • Five-year timeframe for investing more than $200 million • Work will be constructed according to the priority approved by City Council • Highest priority is for sanitary sewer improvements • Storm system improvements where the cost is $25,000 or less per benefiting property will be prioritized • Projects greater than $25,000 will be combined with other City infrastructure renewal programs

  12. Cost of Improvements (Study Areas 14, 28, 29 & 30 only) Total Cost: $272 million; $195 million for Priority Areas Ward 33: 17 works; $52 million

  13. Our 2009 Workplan • Since last year, we have been working on: • Developing a schedule for all the works • Coordinating with various agencies • Surveying the sites • Developing detailed engineering plans • Contractors to be hired in fall 2009 to begin work • Sanitary sewers will be replaced along: • Shaunghnessy Blvd, Leith Hill Rd, Esterbrook Ave • Storm sewers replaced along: • Edmonton Rd., Ipswich Cres

  14. 2009 and Beyond • Pre-engineering underway for storm sewer replacement along: • Seneca Hill Dr, Silas Hill Dr, Van Horne Ave, Oshea Cres • Corning Rd and Lesgay Cres • Grove Park Cres and Glentworth Rd • Shippigan Cres and Dallington Dr • Axsmith Cres • Deerford Rd and Hobart Dr • Gleneagle Cres, Sandbour Cres, Baroness Cres • Gleneagle Cres, Allenbury Cres, Kingslake, Lisburn, Kempsell, Houston • Faye Drive and Edmonton Dr • Brian Drive, Pleasant View Dr, Old Sheppard Ave, Cairnside Cres • Work involves approvals/permits by conservation authority and province

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