Low Impact Development (LID)

Steven D. Trinkaus, PE, CPESC, CPSWQ, Principal, Trinkaus Engineering LLC, Southbury, CT

Morning Session

Understanding and Implementing Principles of Low Impact Development
Understanding the status quo (conventional development, stormwater management)
Drawbacks of conventional approaches
Origins and Principles of LID
Benefits of LID (environmental, municipal, public, developers)

Applying LID Strategies to a Site
Environmental Site Design (natural resource assessment and evaluation)
General hydrologic considerations
LID site planning tools (application to a site)
Site plan development

Low Impact Development Hydrologic Considerations
Principles of LID
Tools to achieve the hydrologic principles of LID
Regional hydrologic considerations
Evaluating LID hydrologic scenarios

Afternoon Session

The Regulatory Framework and LID
Current regulatory system
Approaches to LID (state, local)
Regulatory barriers in zoning, subdivision, and inland wetland regulations
Regulatory language to eliminate current regulatory barriers to include LID
Outlines and concepts to be included in LID manuals

LID Integrated Management Practices
Bioretention, filter strips, vegetated swales, level spreaders
Subsurface gravel wetlands, pond/wetland systems, constructed wetlands
Permeable pavement, porous concrete, open course pavers
Rain barrels, cisterns

Erosion and Sedimentation Controls for the Implementation of LID Practices
Causes of erosion and sedimentation
Solutions for the control of soil erosion and sedimentation
Environmental and regulatory considerations
Are the E/S issues different for LID systems?

Case Studies (Applying LID and Regulations)
Applications (residential, commercial)
Regulatory Approaches