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INSTRUCTORS: 
Daniel E. Medina, Ph.D., P.E., M.ASCE
Robert M. Roseen, Ph.D., P.E., M.ASCE

Purpose and Background

Low Impact Development (LID) is a well-established approach now integral to numerous land development guidelines and regulations nationwide. This course will cover the fundamental principles of LID, the critical importance of water-centric site planning, and the nature-based engineered devices used and the unit process in them that control runoff quantity and quality. The course will emphasize LID as a holistic approach that includes conventional stormwater management.

Benefits and Learning Outcomes

Upon completion of this course, you will be able to:

• Explain LID principles and how LID controls operate.
• Determine if a site design development plan is water-centric using LID concepts.
• Engage in exchanges with designers and stakeholders on high-level principles surrounding a site’s layout.
• Explain the fundamental principles of LID and recognize the paramount role of water-centric site planning to minimize the impact of impervious surfaces on receiving waters.
• Identify LID stormwater devices, describe their basic configurations, identify the unit processes that control water quantity and water quality, and understand their applicability.
• Determine operation and maintenance issues for LID controls.
• Describe the relationship between LID and conventional stormwater management and recognize that LID is a comprehensive approach that includes traditional stormwater management.

Assessment of Learning Outcomes

Achievement of the learning outcomes by attendees will be assessed through (3) exams.

Who Should Attend?

• Civil engineers
• Planners
• Landscape architects/designers
• Environmental scientists
• Contractors
• Members of environmental organizations
• Public officials

How to Earn your CEUs/PDHs

This course is worth 2.4 CEUs/24 PDHs. To receive your certificate of completion, you will need to complete (3) exams and receive a passing score of 70% or higher.

How do I convert CEUs to PDHs?

1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]

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Course Outline

Week 1: Stormwater impacts in urban environments
Course Introduction & Week Introduction
Intro to impacts of uncontrolled stormwater
Impacts on water quantity
Impacts on water quality
Impacts on channel form
Impacts on aquatic biota
Learning Exercise - Matching impacts to their causes
Conclusion

Week 2: Setting performance standards for stormwater management
Introduction
Relationship between stormwater control and performance goals
Learning Exercise - Sequence of application of integrated stormwater management
Uniform sizing criteria
Methods for establishing performance criteria - Watershed based
Methods for establishing performance criteria - Technology based
Learning Exercise - Choice of an approach to set performance criteria
Estimating pollutant removal
Conclusion

Week 3: Stormwater management concepts: Unit processes and unit operations
Introduction
Unit processes (UPs), unit operations (UOs), and systems
Detailed description of UPs
Learning Exercise - Selecting the appropriate UPs
Categories of stormwater controls
Process to select stormwater controls
Learning Exercise - Selecting a stormwater treatment process
Conclusion

Week 4: Fundamental principles of Low Impact Development
Introduction
The advent of LID
Principles of LID
Musings about LID
Learning Exercise - Benefits of water-centric site planning
Site planning and layout
Examples of LID installations
Learning Exercise - Benefits of LID controls
Conclusion
Exam: Weeks 1-4

Week 5: Stormwater controls – Filters
Introduction
General characteristics of filters
Types of filters – Part 1
Types of filters – Part 2
Learning Exercise - Sizing a bioretention filter
Types of filters – Part 3
Types of filters – Part 4
Conclusion

Week 6: Stormwater controls – Infiltrators
Introduction
General characteristics of infiltrators
Types of infiltrators – Part 1
Learning Exercise - Sizing an infiltration basin
Types of infiltrators – Part 2
Learning Exercise - Sizing an infiltration trench
Types of infiltrators – Part 3
Conclusion

Week 7: Stormwater controls – Strips and swales, gross pollutant traps
Introduction
General Characteristics of Swales and Strips
Design Principles
Swales
Strips
Learning Exercise - Sizing a Swale
Gross Pollutant Traps (GPTs)
Mr. Trash Wheel
Conclusion

Week 8: Stormwater controls – Basins
Introduction
General characteristics of basins
Design principles
Types of basins – Part 1
Learning Exercise - Sizing a cistern
Types of basins – Part 2
Learning Exercise - Sizing a dry basin
Conclusion
Exam: Weeks 4-8

Week 9: What works and what doesn’t work
Introduction
The Good
The Bad
The Ugly
Learning Exercise - What makes good and bad designs and implementations
Conclusion

Week 10: Operations, maintenance, and inspection
Introduction
The importance of inspection and proper operation and maintenance
Levels of O&M service
Maintenance needs
Components of successful maintenance programs
Learning Exercise - Levels of service
Guidelines for O&M
Perspectives from the field
Learning Exercise - O&M practices
Conclusion

Week 11: Performance assessment
Introduction
The criticality of performance assessment
Measuring improvement
Challenges of dealing with stormwater data
Learning Exercise - The International Stormwater Best Management Practices database
Overview of monitoring and assessment plans
Qualitative assessment methods
Qualitative assessment methods
Learning Exercise
Conclusion

Week 12: Modeling stormwater controls
Introduction
The need for modeling in stormwater management
Modeling UPs in stormwater controls
Types of models
Overview of available models
Learning Exercise - Types of hydrologic models
Selecting a model
Data needs
Learning Exercise - Modeling case study
Conversations with a modeler
Conclusion
Exam: Weeks 9-12