Welcome, Introduction, Workshop Preview, Learning Outcomes and the Assessment Method
Overview –The Big Picture
- Why Do We Need Storm Water Management?
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- Effect of urbanization on: surface runoff, peak flow, volume and timing, surface water quality, groundwater quantity and quality, natural habitat, stream corridors
- Changes in hydrological cycle-why we cannot match pre-development conditions once we urbanize
- Degradation of receiving watercourses, erosion and
sedimentation
- Changes in stream temperatures-effect on cold water streams
- Current issues in controlling storm water quantity and quality-the lack of finding perfect solutions
2. Protection of Receiving Watercourses
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- Flood hazards-risk assessment and need for public education
- Flood plain delineation, choice of flood plain criteria and the problems of public acceptance
- Aquatic habitat protection
- Erosion, meandering, and the new concept of Valley Control
- Introduction to Morphology-is it a science or art?
3. Selection of Best Management Practices Design Criteria
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- Post and pre-development criteria
- Water quality, fish and body contact recreation criteria
- Erosion control criteria
- Major-minor system
- Water balance, recharge criteria-why it is impossible to meet some of the criteria
- Water temperature criteria -why it is impossible to meet frequently the criteria
- Effect of climate change-how to make allowance for it when we know so little?
4. Review of Numerous Alternative Stormwater Water Management BMPs-and Why None Are Perfect
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- Source control: roof and foundation drains, permeable pavers, etc.)
- Conveyance controls, (Swales, pervious pipes, etc.)
- End-of- pipe controls, (wet and dry ponds, underground tanks, wetlands, filters, infiltration facilities, separators, etc.)
- Good Housekeeping and municipal practices, (Land use restriction, litter control, recycling, waste control, street sweeping, road salt management, public education, etc.
- Recommended BMP Manuals
5. Recent Developments in the Design of BMP for Low Impact Developments-How Effective Are They?
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- Low Impact Developments
- Innovative Landscape design: rain garden, bio-retention, permeable paving and green roofs
- Review of emerging technologies, new commercial
products to control water quality-and the search
for the whole truth
6. How to Select BMPs for Different Site Conditions
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- Treatment trains
- Selection process, use of selection matrix
- Short and long-term costs
7. Special Cases: Redevelopment, Retrofits, and Infilling
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- Stormwater management criteria
- Applicable practices
- Approach to retrofits
8. Design of the More Frequently Used Best Management Practices
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- Outline of Wet pond design
- Outline of Grassed swale design
9. Operation and Maintenance of BMPs-a Municipality's Long Term Liability
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- Municipal input during reviews of pond, wetland, swale, infiltration, porous pavement designs
- Erosion and sediment control at construction sites and inspection during construction
- Operation and maintenance tasks for source, conveyance and end-of- pipe facilities
- Preparation of municipal operation and maintenance plan
- Resources: budgeting, manpower, equipment, scheduling
10. Monitoring
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- Programs for monitoring flows, water quality, aquatic habitat,
- Base lone monitoring
- Performance monitor
- New trend in effectiveness monitoring-how to do it and the difficulty of scoping it
- Parameters to be monitored, sampling, equipment
- Safety, and public perception-lessons learned from court cases
- Preparation of a four phase monitoring program
11. Introduction to Frequently Used Softwares and the Haestad softwares (included in the course)contained in the Hydraulic Engineering Handbook
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- Overview of hydrology models-HYMO based, SWMM based, etc
- Overview of hydraulic models: HEC-RAS, MOBED
- Overview of the Haestad drainage models-StormCad, FlowMaster, CulvertMaster, and PondPack
12. Workshop – BMP Design Example
A step by step design example for an infill development, demonstrating a case of extremely severe control criteria dictated by the agency and the selection of peak flow and water balance BMP design criteria and controls