Course Catalogue.

After participating in this course, you will be able to:

• Understand the role and concept of LIDs in stormwater management systems in the context of urban land development
• Understand the regulatory framework and guidelines
• Understand different types of LIDs, their applicability and concept/basic design
• Understand the parameters influencing LID design
• Gain an introductory understanding of the LID Treatment Train Tool (developed by Lake Simcoe Region Conservation Authority, Ontario)

Description
The main goal of Low Impact Development (LID) practices as part of stormwater management systems is to tackle problems related to urban stormwater runoff, including erosion, sedimentation and pollution.

While the traditional approach to dealing with stormwater has been to move it away from city streets as quickly and efficiently as possible, LID, by contrast, deals with stormwater by mimicking natural water cycles.

LID increases the infiltration of stormwater into the soil, where it can be filtered and/or absorbed by plants. LID is a lower-cost alternative to conventional grey infrastructure and provides a number of ecological, economic and social benefits.

This course is developed based on the applicable guidelines and regulatory requirements set in Ontario, including but not limited to the Toronto Region Conservation Authority (TRCA) and Lake Simcoe Region Conservation Authority (LSRCA). However, the concept applies to other jurisdictions in Canada.

This course will provide the participants with a comprehensive understanding of the concept and requirements of LIDs, LID types and their applicability, applicable guidelines and regulatory framework (in Ontario), conceptual design of LIDs and introduction to the recently developed LID Treatment Train Tool (by LSRCA). An example of LID selection and design will also be reviewed.

Who Should Attend
Engineering Consultants • Hydrogeologists, Hydrologists (stormwater management) and Environmental Consultants • Planners • Construction Project Managers • Architects • Landscape Architects

Course Syllabus

Session 1

• 1. Basic Concepts in Hydrogeology, Hydrology and Stormwater Management Planning
• Runoff and infiltration
• Water balance calculation in land development
• Conventional Stormwater Management
• Water quality considerations
• 2. Stormwater Management Regulatory Framework

Session 2

• 1. LID Regulatory Frameworks and Guidelines
• Toronto Region Conservation Authority
• Lake Simcoe Region Conservation Authority
• 2. Types of LID
• Bioretention
• Permeable pavements
• Porous Asphalt
• Infiltration Trench
• Infiltration Chamber
• Enhanced Swales
• Rainwater Harvesting Cistern
• Vegetated Filter Strip
• Green Roof
• Innovative LIDs such as Silva Cells

Session 3

• 1. Design Principles of LID Systems
• Design Principles and Requirements
• Soil and groundwater conditions
• Water infiltration, retention and applicable discharge policies
• Infiltration rate and infiltration rate testing
• Water quality and contaminant removal (Nitrate, phosphate, TSS and others)

Session 4

• 2. Introduction to LID Treatment Trail Tool
• Water budget information: surface evapotranspiration, surface runoff, and infiltration to soil
• Estimates of water quality improvements
• 3. Example Application; Conceptual Design Of LID