Accelerating Action –
The Delaware River Watershed Forum
Session 3
Stormwater Regulatory Context
Gregory Hoffmann, P.E.
Ce...
About the Center for Watershed
Protection
• Non-profit 501(c)3, non-advocacy organization
• Work with watershed groups, lo...
Who are You?
Are you from…
-a watershed group?
-a local government?
-a state or federal agency?
-a university?
-a somewher...
Who are You?
-How many of you have taken a photograph
of a stormwater practice while you are on
vacation?
STORMWATER REGULATION
SOUP

MS4
Clean Water Act
Total Maximum
Daily Loads

National Pollutant
Discharge Elimination
System Permits

Industrial

Constructi...
Clean Water Act
Total Maximum
Daily Loads

National Pollutant
Discharge Elimination
System Permits

Industrial

Constructi...
Municipal

Combined
Sewers and
Wastewater
Treatment
Plants

Municipal Separate
Storm Sewer System

Phase I

Phase II
SIX MINIMUM MEASURES
1. Public Education and Outreach
Basics: Make the public aware of their impact on
stormwater quality....
SIX MINIMUM MEASURES
2. Public Participation/Involvement
Basics: Involve the Public in Development of
Stormwater Program
O...
SIX MINIMUM MEASURES
3. Illicit Discharge
Detection and Elimination
Basics: “Only Rain Down the
Storm Drain”
Opportunities...
3. Illicit Discharge
Detection and Elimination
CWP Maryland Study:
• Over 25% of outfalls have dry weather flow
• 70-100% ...
SIX MINIMUM MEASURES
4. Construction Site Runoff Control
Basics: Enforce Erosion and Sediment Control
Rules
Opportunities:...
SIX MINIMUM MEASURES
5. Post Construction Runoff Control
Basics: Require water quality practices for new
development and r...
5. Post Construction Runoff Control
PA:
• Volume from 2-year storm increase (3.3”).
• Redevelopment: 20% improvement.
NJ:
...
SIX MINIMUM MEASURES
6. Pollution Prevention/Good
Housekeeping
Basics: Reduce pollution from maintenance
activities, stora...
SIX MINIMUM MEASURES + 1
7. TMDL Implementation
Basics: Retrofits, stream restoration, and other
restoration practices to ...
POINTS TO CONSIDER
All of the minimum measures have the potential
to lead to significant water quality improvements.
Curre...
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Stormwater Regulatory Context by Gregory Hoffmann, P.E. of Center for Watershed Protection

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Center for Watershed Protection, works with watershed groups, local, state, and federal governments.
Provides tools communities need to protect streams, lakes, and rivers.
24 staff in MD, VA, PA, NY

Published in: News & Politics, Technology
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  • Under municipal, I would distinguish between wastewater Treatment Plants and MS4. Might be good to distinguish between Phase 1 and 2
  • Under municipal, I would distinguish between wastewater Treatment Plants and MS4. Might be good to distinguish between Phase 1 and 2
  • for Phase II communities
  • I would add opportunities for developing programs for on-the-ground implementation (e.g., disconnection)One of the biggest cost factors with implementation plans is the limitation of implementing BMPs on municipal land.
  • load reductions can be quantified for TMDL accounting.
  • Perhaps discuss the basic “theory” behind LID type stormwater programs? Also, that SWM does not mitigate impacts fully and will have to be mitgated through other programs to meet TMDLs.
  • Stormwater Regulatory Context by Gregory Hoffmann, P.E. of Center for Watershed Protection

    1. 1. Accelerating Action – The Delaware River Watershed Forum Session 3 Stormwater Regulatory Context Gregory Hoffmann, P.E. Center for Watershed Protection
    2. 2. About the Center for Watershed Protection • Non-profit 501(c)3, non-advocacy organization • Work with watershed groups, local, state, and federal governments • Provide tools communities need to protect streams, lakes, and rivers • 24 staff in MD, VA, PA, NY www.cwp.org
    3. 3. Who are You? Are you from… -a watershed group? -a local government? -a state or federal agency? -a university? -a somewhere I’ve forgotten to mention?
    4. 4. Who are You? -How many of you have taken a photograph of a stormwater practice while you are on vacation?
    5. 5. STORMWATER REGULATION SOUP MS4
    6. 6. Clean Water Act Total Maximum Daily Loads National Pollutant Discharge Elimination System Permits Industrial Construction Municipal
    7. 7. Clean Water Act Total Maximum Daily Loads National Pollutant Discharge Elimination System Permits Industrial Construction Municipal
    8. 8. Municipal Combined Sewers and Wastewater Treatment Plants Municipal Separate Storm Sewer System Phase I Phase II
    9. 9. SIX MINIMUM MEASURES 1. Public Education and Outreach Basics: Make the public aware of their impact on stormwater quality. Opportunities: • Develop partnerships between community and watershed groups. • Achieve water quality improvements on private property.
    10. 10. SIX MINIMUM MEASURES 2. Public Participation/Involvement Basics: Involve the Public in Development of Stormwater Program Opportunities: • Better communication between community and watershed groups. • Achieve public support for stormwater program. • On-the-ground implementation
    11. 11. SIX MINIMUM MEASURES 3. Illicit Discharge Detection and Elimination Basics: “Only Rain Down the Storm Drain” Opportunities: • Cleaning up the dirtiest water can have very significant impacts on overall water quality.
    12. 12. 3. Illicit Discharge Detection and Elimination CWP Maryland Study: • Over 25% of outfalls have dry weather flow • 70-100% of outfalls with dry weather are potential illicit discharges • Up to 20% of annual nitrogen load and 90% of total bacteria load. 8”
    13. 13. SIX MINIMUM MEASURES 4. Construction Site Runoff Control Basics: Enforce Erosion and Sediment Control Rules Opportunities: • Keep sediment out of waterways. Source: Schueler and Lugbill, 1990
    14. 14. SIX MINIMUM MEASURES 5. Post Construction Runoff Control Basics: Require water quality practices for new development and redevelopment. Opportunities: • “Don’t make it worse.” • Redevelopment can improve water quality if regulations are implemented.
    15. 15. 5. Post Construction Runoff Control PA: • Volume from 2-year storm increase (3.3”). • Redevelopment: 20% improvement. NJ: • Volume from 2-year storm increase. • Redevelopment: 50% improvement. NY: • Volume from 0.8” to 1.2” storm increase • Redevelopment: At least 25% improvement.
    16. 16. SIX MINIMUM MEASURES 6. Pollution Prevention/Good Housekeeping Basics: Reduce pollution from maintenance activities, storage yards, etc. Opportunities: • Be an example to the community. • Clean up the dirty water first.
    17. 17. SIX MINIMUM MEASURES + 1 7. TMDL Implementation Basics: Retrofits, stream restoration, and other restoration practices to meet pollutant goals. Opportunities: • Retrofits and stream restoration can be very visible practices, with great water quality benefits. • Cost effective if you focus on the low-hanging fruit.
    18. 18. POINTS TO CONSIDER All of the minimum measures have the potential to lead to significant water quality improvements. Current focus on retrofits should not overshadow other opportunities. The best watershed plans will consider all types of opportunities.
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