Minnesota Stormwater Permitting and Storm Water Management Seminar

MINNESOTA STORMWATER MANAGEMENT
Thursday, February 18, 2010 — Eagan, MN

This seminar is a practical, one-day program for engineers, architects, landscape architects and contractors to 1) Review federal and Minnesota laws and regulations regarding stormwater management, 2) Analyze stormwater management strategies using wet and dry detention facilities, 3) Examine green stormwater practices, and 4) Learn about maintaining wet and dry detention ponds


Seminar Agenda

Understanding Federal and State Rules on Stormwater Management
◗ Federal and state statutes and regulations
• National Pollutant Discharge Elimination System (NPDES) requirements
• Minnesota Pollution Control Agency stormwater management requirements
◗ Local requirements and procedures
◗ Permits and permitting process
◗ Special waters and impaired waters

Stormwater Management Using Wet and Dry Detention Facilities
◗ Detention/retention pond overview
◗ Advantages and disadvantages
◗ Design considerations
• Hydrology • Permitting
• Site selection • Water quality
• Pond sizing
• Safety considerations
• Outlet structures
• Good design practices
• Pond routing theory
• Interconnected ponds
◗ Steps for detention design

Green Stormwater Practices
◗ Bioretention basics
◗ Bioretention cells
◗ Cisterns
◗ Runnels
◗ Permeable pavers/pervious concrete
◗ Disconnecting impervious area/vegetated swales
◗ Soil amendments
◗ Sustainable landscaping
◗ Rainwater harvesting
◗ Green roofs

Maintaining Wet and Dry Detention Ponds
◗ Evaluating erosion
• Techniques for preventing and repairing erosion
◗ Evaluating water quality
• Managing sedimentation
• Managing turbidity and algae bloom
• Identifying and managing pollutants
◗ Maintaining outlets and trash racks
◗ Reviewing case studies



For more information or to register for this seminar, go to:
Minnesota Stormwater Seminar

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP at
info@calthacompany.com
or
Caltha LLP Website

Technical Guidance For EISA Section 438 Compliance

Under the new Section 438 of the Energy Independence and Security Act of 2007 (EISA), federal agencies have new requirements to reduce stormwater runoff from federal development and redevelopment projects to protect water resources. Federal agencies can comply using a variety of stormwater management practices often referred to as "green infrastructure" or "low impact development" practices, including for example, reducing impervious surfaces, using vegetative practices, porous pavements, cisterns and green roofs.

US EPA has recently issued guidance ("Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects under Section 438 of the Energy Independence and Security Act") to assist federal agencies in minimizing the impact of federal development projects on nearby water bodies. The guidance is being issued in response to a change in law and an Executive Order signed by President Obama, which calls upon all federal agencies to lead by example to address a wide range of environmental issues, including stormwater runoff.

The purpose of the guidance document is to provide technical guidance and background information to assist federal agencies in implementing EISA Section 438. Each agency or department is responsible for ensuring compliance with EISA Section 438. The document contains guidance on how compliance with Section 438 can be achieved, measured and evaluated.

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP at
info@calthacompany.com
or
Caltha LLP Website

EPA Extends 2008 Construction Stormwater Permit

US EPA has proposed to extend the 2-year term of the Agency’s July 2008 general permit for stormwater discharges from construction activities (CGP) by 1 year. According to EPA, the extension is needed to ensure Agency compliance with a court order requiring promulgation of effluent limitations guidelines (ELG) and new source performance standards (NSPS) for the construction and development (C&D) point source category.

The 2008 CGP provides coverage for discharges from construction sites in areas not addressed by an approved state national pollutant discharge elimination system (NPDES) program. EPA Regions 1, 2, 3, 5, 6, 7, 8, 9, and 10 issued the 2008 CGP to replace the expired 2003 CGP for operators of new and unpermitted ongoing construction projects. The current 2008 CGP expires on June 30, 2010.

EPA is proposing to extend coverage of the CGP to June 30, 2011. This would give EPA approximately the same time period—18 months—that the Agency required to issue the 2003 CGP. The 2008 CGP required 3 years to finalize.

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP at
info@calthacompany.com
or
Caltha LLP Website