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

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 Our Findings

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

General Surface Patricia Ave. Cactus Ave.

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

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! Recommended Solutions

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

Pipe Controls (Storm and Sanitary) Increasing Sewer Pipe Size Adding new sewers (twinning)

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

Over 300 improvement 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 City-wide Implementation Plan

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 Sanitary Sewer Upgrades16 works$6 million Sanitary Storage Tanks13 works$14 million Storm Drainage Upgrades261 works$163 million $100 million (priority areas) Storm Sewer Storage Facilities 10 works$47 million $33 million (priority areas) Lot level controls$42 million

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

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 2009 and Beyond