Stormwater Management Rule: Lessons Learned and Next Steps

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Stormwater Management Rule Lessons Learned and
Next Steps

• Lawrence J. Baier
• Director
• Division of Watershed Management

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New Jersey Stormwater Management Rules N.J.A.C.
78 February 2, 2004

• Municipal Stormwater Management Plans
• Regional Stormwater Management Plans
• Runoff Quantity
• Recharge
• Water Quality
• Maintenance

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Stormwater Management RuleN.J.A.C. 78

• Implementation roll out issues
• Jurisdiction/grandfathering
• Interpreting SWRPA requirements
• Impervious, recharge, water quality
• Integration of State and local reviews
• Nonstructural measures
• Manufactured treatment devices
• Addressing issues
• Short term FAQs on www.njstormwater.org
• Long term May initiate rule revision before
  re-adoption deadline in 2009.

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Contemplated Stormwater Rule Amendments

• Expanded exemptions
• Activities
• Geographic areas
• Tidal areas
• Pinelands
• Grass Swales
• Stream Corridor Protection Plans
• Special Water Resource Protection Areas
• Exempted Activities
• Hydrography Reference
• Functional Values Assessment

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Need to Address Other Parameters

• Conventional pollutant and aquatic life
  impairments tied to stormwater management
• Over 300 TMDLs completed to date all
  predominantly NPS in traditional sense
• Parameters of concern
• Nutrients
• Pathogens
• Metals, toxics, TDS?

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BMP Manual Updates

• New BMPs
• Grass Swale
• Existing BMP Updates
• Media Depths and Sizing
• Sand Filter
• Bioretention Basin
• Soil Testing Criteria
• Infiltration BMP Design
• Adjustment to Soil Survey Information

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Future BMP Manual Updates

• Groundwater Mounding Methodology
• Upgrade to Groundwater Recharge Computations
• Adjustment to BMP Design to Focus on Other
  Pollutants
• Temperature
• Fecal
• Phosphorous
• Nitrogen

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Nonstructural Strategies

• Nonstructural Stormwater Management Strategies
  Point System (NSPS)
• Target Based on Site Size and Planning Area
• Comparison of Proposed to Existing
• Brightline Test for Pass Only
• Rigorous Analysis Required for Projects That Do
  Not Automatically Pass

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The Future for MTDs

• Respond to additional Pollutants of concern in
  certification requests
• Adjustment to Design Based on Pollutant
• Range of Pollutant Removal Rate Based on Design

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Questions?