Storm Drainage and Storm Water Management Policies and Design Guidelines

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<p>STORM DRAINAGE AND STORMWATER MANAGEMENT POLICIES AND DESIGN GUIDELINES</p> <p>FINAL</p> <p>30 November 2009</p> <p>Storm Drainage and Stormwater Management Policies and Design Guidelines</p> <p>City of Barrie</p> <p>FOREWORD</p> <p>This document was prepared under the direction of the Technical Review Committee assembled by the City of Barrie and consisting of the following members:</p> <p>Mr. Mike Nugent, C.E.T. Ms. Kelly Oakley, P.Eng. Mr. Lorran Cooney, C.E.T. Mr. Jeff Capling, P.Eng. Dr. Shah Alamgir, Ph.D., P.Eng. Mr. Dave Caspick, C.E.T. Mr. Geoff Mitchinson Mr. Craig Morton, C.E.T., PMP Mr. Tom Hogenbirk, P.Eng. Mr. Glenn Switzer, P.Eng. Mr. Yousry Hamdy, M.Sc., P.Eng. Mr. Brian Greck, P.Eng. Mr. Bill Coffey, M.Sc., P.Eng.</p> <p>- Policy and Standards Supervisor, Chairperson - Infrastructure Program Engineer (City of Barrie) - Senior Infrastructure Planning Technologist (City of Barrie) - Project Engineer (City of Barrie) - Infrastructure Planning Engineer (City of Barrie) - Manager of Development, Policy and Standards (City of Barrie) - Technical Operations Supervisor (City of Barrie) - Manager of Roads and Parks Operations - Manager of Engineering and Technical Services (LSRCA) - Director of Engineering and Technical Services (NVCA) - SENES Consultants Limited - Greck and Associates Limited - Valdor Engineering Inc.</p> <p>This document was prepared by Valdor Engineering Inc. in association with SENES Consultants Limited and Greck and Associates Limited. This updated manual replaces the previous City of Barrie Drainage &amp; Storm Sewage Policies &amp; Criteria prepared in 1983. The updated document was prepared to reflect current accepted design practices and the evolving requirements of the City regarding storm drainage and stormwater management in 2009 as well as the current municipal, regional, provincial and federal legislation, guidelines, policies and criteria. Over time it will be necessary to update the manual as the regulations, design practices and technologies continue to evolve and change. A number of revisions were completed for the updated manual since the previous policies and criteria document was prepared in 1983. The key revisions include the following: A summary of current applicable regulations and legislation at the municipal, regional, provincial and federal levels. Updated policies and guidelines for storm drainage and stormwater management based on current industry standard practices and the specific needs and requirements of the City of Barrie. The guidelines and information provided in this document are consistent with standard guidelines provided in the MOE Stormwater Management Planning and Design Manual (2003), the MTO Drainage Management Manual (1997), the Lake Simcoe Protection Plan (2009), and the LSRCA Watershed Development Policies (2007) and the NVCA Development Review Guidelines (2006).</p> <p>30 November 2009</p> <p>ii</p> <p>Storm Drainage and Stormwater Management Policies and Design Guidelines </p> <p>City of Barrie</p> <p>The policies and guidelines provided in this document have been endorsed by the Lake Simcoe Region Conservation Authority (LSRCA) and the Nottawasaga Valley Conservation Authority (NVCA). Updated IDF data based on 1979 to 2003 rainfall records from the WPCC located in the City of Barrie including an adjustment factor to account for climate change based on a review of climate change literature. The previous IDF data used was from the Orillia climate station. Return period design storm files for the City of Barrie adjusted to account for climate change. Recent changes in legislation regarding phosphorus loads and the protection of Lake Simcoe (Ontario Regulation 219/09 and the Lake Simcoe Protection Plan). New and updated City of Barrie Standard drawings using current design guidelines. A summary of recommendations from approved Master Drainage Plans for City of Barrie Watersheds. Assumption protocol for storm sewers and stormwater management facilities. Guidelines for completing hydrologic and hydraulic analyses and reports associated with storm drainage and stormwater management submissions. Sample problems and calculations. Stormwater management pond planting guidelines. A summary of key emerging technologies in stormwater management.</p> <p>Copies of the Storm Drainage and Stormwater Management Policies and Design Guidelines and subsequent updates may be obtained from the City of Barrie Engineering Department.</p> <p>30 November 2009</p> <p>iii</p> <p>Storm Drainage and Stormwater Management Policies and Design Guidelines</p> <p>City of Barrie</p> <p>Table of Contents</p> <p>FOREWORD................................................................................................................................................. II 1.0 INTRODUCTION.............................................................................................................................. 1</p> <p>1.1 PURPOSE ...................................................................................................................................... 1 1.2 ENVIRONMENTAL AND MUNICIPAL LAND USE PLANNING ................................................................... 1 1.2.1 Watershed Plan ....................................................................................................................... 1 1.2.2 Subwatershed Plan ................................................................................................................. 1 1.2.3 Master Drainage Plan.............................................................................................................. 2 1.2.4 Stormwater Management Plan (Preliminary/Conceptual Design)........................................... 2 1.2.5 Stormwater Management Plan (Detailed Design)................................................................... 2 1.2.6 Municipal Class Environmental Assessment .......................................................................... 4 1.3 FORMAT OF DOCUMENT ................................................................................................................. 4 2.0 3.0 LEGISLATION ACTS AND REGULATIONS............................................................................... 5 STORMWATER DRAINAGE SYSTEM POLICIES AND DESIGN GUIDELINES .......................... 6</p> <p>3.1 FOUNDATION DRAIN COLLECTOR OUTLET SYSTEM .......................................................................... 6 3.1.1 Foundation Drains ................................................................................................................... 6 3.2 MINOR SYSTEM.............................................................................................................................. 6 3.2.1 Service Area ............................................................................................................................ 7 3.2.2 Design Flow............................................................................................................................. 7 3.2.3 Pipe Capacity and Size ........................................................................................................... 9 3.2.4 Roughness Coefficients .......................................................................................................... 9 3.2.5 Flow Velocity ......................................................................................................................... 10 3.2.6 Minimum Slope...................................................................................................................... 10 3.2.7 Sewer Alignment ................................................................................................................... 10 3.2.8 Curved Sewers (radius pipe)................................................................................................. 10 3.2.9 Depth of Storm Sewers ......................................................................................................... 10 3.2.10 Pipe Crossing and Clearance................................................................................................ 10 3.2.11 Sewer Bedding ...................................................................................................................... 10 3.2.12 Joints ..................................................................................................................................... 11 3.2.13 Maintenance Holes................................................................................................................ 11 3.2.14 Catch Basins ......................................................................................................................... 11 3.2.15 Sewer Materials, Catch Basin and Maintenance Hole Types ............................................... 12 3.2.16 Storm Sewer Connections..................................................................................................... 13 3.3 MAJOR SYSTEM ........................................................................................................................... 13 3.3.1 Drainage Area ....................................................................................................................... 13 3.3.2 External Drainage.................................................................................................................. 13 3.3.3 Design Flow........................................................................................................................... 13 3.3.4 Lot Grading and Drainage ..................................................................................................... 13 3.3.5 Overland Flow Routes........................................................................................................... 13 3.3.6 Roughness Coefficients ........................................................................................................ 13 3.3.7 Roads .................................................................................................................................... 15 3.3.8 Channels ............................................................................................................................... 15 3.3.9 Total Capture Inlets ............................................................................................................... 15 3.3.10 Conveyance of Flow from Road to SWM Facility or Channel ............................................... 15 3.3.11 Outfall Channels .................................................................................................................... 16 3.4 BRIDGES AND CULVERTS ............................................................................................................. 16 3.4.1 Road Crossings ..................................................................................................................... 17 3.4.2 Roadside Ditches and Culverts ............................................................................................. 17 3.4.3 Design Flow Capacity............................................................................................................ 17 3.4.4 Headwalls / Endwalls ............................................................................................................ 17 3.4.5 Fish Passage......................................................................................................................... 17 3.4.6 Erosion Protection ................................................................................................................. 18 3.5 WATERCOURSES.......................................................................................................................... 18</p> <p>30 November 2009</p> <p>vi</p> <p>Storm Drainage and Stormwater Management Policies and Design Guidelines</p> <p>City of Barrie</p> <p>3.5.1 Existing Watercourses........................................................................................................... 18 3.5.2 Natural Channel Design ........................................................................................................ 18 3.6 EASEMENTS AND BUFFERS .......................................................................................................... 18 3.7 GENERAL MAINTENANCE REQUIREMENTS..................................................................................... 18 4.0 STORMWATER MANAGEMENT POLICIES AND DESIGN GUIDELINES................................. 20</p> <p>4.1 ENVIRONMENTAL PROTECTION GUIDELINES .................................................................................. 20 4.1.1 Water Quality and Erosion Control........................................................................................ 20 4.1.2 Quantity Control (Flood Protection)....................................................................................... 20 4.1.3 Water Balance ....................................................................................................................... 20 4.1.4 Flow Diversions ..................................................................................................................... 20 4.1.5 Receiving Watercourses ....................................................................................................... 21 4.1.6 Lake Simcoe Water Quality................................................................................................... 21 4.1.7 Wetlands................................................................................................................................ 21 4.2 FLOOD AND EROSION PROTECTION GUIDELINES ............................................................................ 21 4.2.1 Flood Standards for River Systems....................................................................................... 21 4.2.2 Flood Hazard Limits for Lakes............................................................................................... 21 4.2.3 One and Two Zone Concepts ............................................................................................... 22 4.2.4 Special Policy Areas.............................................................................................................. 22 4.2.5 Flood Proofing of Buildings ................................................................................................... 23 4.2.6 Stormwater Management Facilities ....................................................................................... 23 4.2.7 Retrofit of SWM Facilities ...................................................................................................... 23 4.2.8 Erosion and Sediment Control .............................................................................................. 23 4.3 SITE PLANS AND INFILL DEVELOPMENTS (DRAINAGE AREA &lt; 5 HA)................................................. 23 4.3.1 Scenario A Both Quality and Quantity Controls Provided Downstream ............................ 25 4.3.2 Scenario B Quantity Controls Provided Downstream but No...</p>

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