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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
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