483
edits
Changes
Jump to navigation
Jump to search
no edit summary
Line 292:
Line 292:
The LID SWM Guide provides information and direction to assist engineers, ecologists
−and planners with landscape-based stormwater management planning and the
−selection, design, construction and monitoring of sustainable stormwater management
−practices. The focus of this guide is on guidance regarding the planning and design of
−structural low impact development practices for stormwater management.
−The practice of managing stormwater is continuing to evolve as the science of
−watershed management and understanding of our watersheds grow. Effective
−management of stormwater is critical to the continued health of our streams, rivers,
−lakes, fisheries and terrestrial habitats. CVC and TRCA believe that an improved
−understanding of the municipal and environmental planning process and the
−requirements for stormwater management will lead to improvements in management
−practices and an increasingly standardized and streamlined approach to addressing
−stormwater throughout the CVC and TRCA watersheds.
−The LID SWM Guide is intended to augment the Ontario Ministry of the Environment
−(OMOE) Stormwater Management Planning and Design Manual (2003). The OMOE
−manual provides design criteria for “conventional” end-of-pipe stormwater management
−practices such as wet ponds and constructed wetlands but provides only limited
−information about lot level and conveyance controls. The OMOE manual does, however,
−emphasize the use of a “treatment train” approach to reduce the impacts of stormwater runoff. A treatment train approach – a combination of lot level, conveyance, and end-ofpipe
−stormwater management practices – is usually required to meet the multiple
−objectives of stormwater management, which include maintaining the hydrologic cycle,
−protecting water quality, and preventing increased erosion and flooding.
−This LID SWM Guide focuses on a number of lot level and conveyance stormwater
−management practices that have been used extensively in Europe, the United States,
−British Columbia and at demonstration sites in Ontario. These practices have only
−recently been considered for broad application in Ontario as part of the treatment train
−approach. These low impact development practices include green roofs, bioretention,
−permeable pavement, soakaways, perforated pipe systems, enhanced grass swales,
−dry swales and rainwater harvesting. The LID SWM Guide recommends and supports
−the use of the treatment train approach for stormwater management. Accordingly, the
−reader is urged to refer to the OMOE manual (OMOE, 2003), as a guide for
−incorporating more traditional practices such as wet ponds and wetlands into the overall
−stormwater management planning and design process.
−The LID SWM Guide is not intended to limit innovation or restrict the use of creative
−solutions for stormwater management. Indeed, the OMOE, CVC, TRCA and partner
−municipalities encourage the development of innovative designs and technologies.
−= Related Documents =
−This manual is not a stand-alone document. It is intended to augment the Ontario
−Ministry of the Environment’s 2003 Stormwater Management Planning and Design
−Manual, which provides design criteria for “conventional” end-of-pipe stormwater
−management practices such as wet ponds and constructed wetlands. It is also a
−companion document to other stormwater related guidance documents prepared by
−CVC and TRCA. Amongst others, these include:
−'''CVC'''
−• Credit River Water Management Guidelines (CRWMG) (2007);
−• Credit River Stormwater Management Criteria (currently under development;
−will be an appendix to the CRWMG;
−• Geomorphic and Meander Belt Guidelines (an appendix to the CRWMG);
−• Floodline Mapping Guidelines (an appendix to the CRWMG);
−• Environmental Impact Report Terms of Reference (an appendix to the
−CRWMG);
−• Technical Guidelines for Floodproofing, 1994 (an appendix to the CRWMG);
−• Hydrologic/Hydraulic Modeling (an appendix to the CRWMG Guidelines);
−• Guidelines for Hydrogeologic Studies (an appendix to the CRWMG);
−• Headwater Assessment Guidelines (an appendix to the CRWMG).
−'''TRCA'''
−• Planning and Development Procedural Manual (2007);
−• Stormwater Management Criteria (currently under development);
−• Floodplain Management Guideline; and
−• Stream Crossing Guidelines.
−= Notice =
−The contents of this report do not necessarily represent the policies of the supporting agencies. Although
−every reasonable effort has been made to ensure the integrity of the report, the supporting agencies do
−not make any warranty or representation, expressed or implied, with respect to the accuracy or
−completeness of the information contained herein. Mention of trade names or commercial products does
−not constitute endorsement or recommendation of those products.
−= Acknowledgements =
−'''Project Team:'''
−• Toronto and Region Conservation Authority
−• Credit Valley Conservation Authority
−• Sustainable Technologies Evaluation Program
−• Aquafor Beech Limited
−• Schollen & Company
−• Dougan and Associates
−• Kidd Consulting
−• Center for Watershed Protection
−• Chesapeake Stormwater Network
−'''Funding support for this document was generously provided by:'''
−• Region of Peel
−• City of Toronto
−• Region of York
−• Fisheries and Oceans Canada
−• Ontario Ministry of the Environment
−• Environment Canada’s Great Lakes Sustainability Fund
</div>
</div>
<div class="clearfix"></div>
<div class="clearfix"></div>
−