waterways maintenance plan - san diego
TRANSCRIPT
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Waterways Maintenance Plan1st Public Workshop
July 13, 2016
Transportation & Storm Water Department
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Transportation & Storm Water Department
• Welcome
• City Officials
• Speakers and Team Members
Introduction
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Transportation & Storm Water Department
• Storm Water Runoff & System
• T&SW’s Storm Water Management Strategy
• Proposed Waterways Maintenance Plan
• Public Input, Dialogue, & Results
Agenda
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Transportation & Storm Water Department
• Storm Water Runoff
• System contains• ~50 miles of streams and channels
• ~20 miles of brow ditches and box culverts
• ~770 miles of storm drains
• ~47,000 structures, including 5,000+ outlets
System Overview
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Transportation & Storm Water Department
Holistic Storm Water Management Strategy
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Transportation & Storm Water Department
• Flood Risk Reduction
• Infrastructure Sustainability
• Resource Protection & Restoration• Water Quality
• Habitat and Species
Waterways Maintenance Plan –Objectives
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Transportation & Storm Water Department
• Numerous City, State and Federal Regulations Potentially Apply• City Development Services Department: Land Development Code
• California Department of Fish and Wildlife: State Fish and Game Code
• California Coastal Commission: Coastal Act
• US Army Corps of Engineers/ San Diego Regional Water Quality Control Board: Federal Clean Water Act
• US Fish and Wildlife Service: Federal Endangered Species Act
Regulatory Overview
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Transportation & Storm Water Department
• Programmatic City-wide approach Is Preferred by Regulatory Agencies
• Accepted approach throughout California
• Streamlined permit processing
• Consistent permit conditions
• Transparent and predictable
Regulatory Overview
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Transportation & Storm Water Department
• 5-year Site Development Permit• 113 channel segments
• 32 miles
• Substantial Conformance Review
• Annual Prioritization Process
• Since 2013• Completed planned maintenance at 5 channels (14 segments total)
• Additional segments addressed under emergency procedures
• 60 acres of mitigation completed, underway, or purchased
Existing – Master Storm Water System Maintenance Program
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Transportation & Storm Water Department
Proposed – Waterways Maintenance Plan• Multi-year Plan
• Currently evaluating all drainage facilities
• Will identify areas that require maintenance
• Will conduct a comprehensive technical evaluation
• Potential to Allow for Regular Renewal Cycles
• Goals• Integrated with overall holistic storm water management strategy
• Standard mitigation measures
• Streamlined maintenance approvals
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Transportation & Storm Water Department
Proposed – Waterways Maintenance Plan• Approximate Timeline
• Plan Development – Summer/Fall 2016
• CEQA & Regulatory Permit Applications– Fall 2016
• Public Notices – Winter 2016
• Technical Analyses – Fall/Winter 2016
• Public Review– Summer 2017
• Certification/Permit Issuance – Winter 2017
• Next Steps• Focused Public Workshops (Fall 2016, etc.)
• CEQA Public Notices/Meetings (Present – Winter 2017)
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Transportation & Storm Water Department
Community InputFocus Areas of Interest:
• Holistic Storm Water Management Strategy1. Watershed Water Quality Improvements
2. Consider System-Wide ImprovementsA. Stream Protection & Restoration
B. Infrastructure Improvements
3. Plan System Maintenance
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Transportation & Storm Water Department
Watershed Water Quality Improvements
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• Goal – Reduce Sediment Sources And Improve Storm Water Runoff Quality
• Optimize pollution prevention efforts
• Reduce waterway maintenance needs
• Integrate green infrastructure
• Examples• Pollution prevention activities (street sweeping,
drain cleaning, & water quality basins)
• Green infrastructure (grass swales, curb cuts/planters, & constructed wetlands)
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Transportation & Storm Water Department
Stream Protection and Restoration
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• Goal - Improve Habitat Conditions• Standardized approach
• Community partnerships
• Master planning for multiple benefits
• Examples• Modified maintenance methods
• Channel expansion
• Concrete removal/daylighting
• Bank stabilization
• Invasive species control
• Property purchase
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Transportation & Storm Water Department
Infrastructure Improvements
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• Goal - Improve the Transition from Engineered to Natural Systems
• Master planning for multiple benefits
• System reliability
• Reduced maintenance
• Examples• Storm drain pipe replacement
• Bank stabilization
• Headwall/Dissipator construction
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Transportation & Storm Water Department
Flood Risk Maintenance
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• Goal – Minimize Property and Life Safety Risk from Flooding
• Prioritize locations based on consequence
• Provide equal benefits & protection throughout the City
• Streamline review/approval of individual flood reduction activities
• Examples• Channel/outlet maintenance & repair
• Flood barriers (levees, berms, & sandbags)
• Community outreach/education
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Transportation & Storm Water Department
Community Input
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• Focus Areas of Interest• Watershed Water Quality Improvements
• Genene Lehotsky, Bryn Evans
• Stream Protection and Restoration• Christine Rothman
• Infrastructure Improvements• Chris Gascon
• Flood Risk Maintenance• Roger Wammack, Stephanie Bracci
• Comment Card
• Website: www.sandiego.gov/stormwater/services/wmp
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Transportation & Storm Water Department
Next Steps
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• Additional Comments?
• Submit Comment Cards
• Website: www.sandiego.gov/stormwater/services/wmp
• Email list
• Next public workshops (Fall 2016, etc.)