1. www.sonomacountywater.org Low Impact Development Guidebook Kent Gylfe kent.gylfe@scwa.ca.gov

2. Sonoma County LID Preserving Sonoma County’s Water Resources

3. Traditional LID (stormwater)

5. Integrated LID  Conservation  Re-use  Stormwater Management Integrating Water Resource Management Strategies

6. Sonoma County LID Program  Regional Plan (County-wide)  Local Agency Plans (Cities, County) A Two-Tier Approach…

7. Regional Plan  Provide broad parameters to guide and support development and implementation of Local Plans  Identify an array of potential LID measures  Provide contemporary solution alternatives

8. Localized Plans  Prepared by Local Land Use Planning Entities  Guided by Regional Plan Parameters  Flexible to provide local identification of: Target offset goals Methods to achieve goals  Developers submit LID project plan Utilize Implementation Templates Quantify Water Saving Factors  Allow off-site mitigation  Comply with NPDES requirements

9. LID Guidebook

10. Water Conservation Element  EPA’s Water Sense and Energy Star Programs  Urban Water Management Act  Model Water Efficient Landscape Ordinance  California Water Plan  Integrated Regional Water Management Program  CUWCC  CALGREEN National & statewide initiatives and efforts

11. Water Conservation Element CALGREEN First Statewide Green Building Code To be adopted into 2010 building code updates Residential – Requires a 20% reduction in indoor water use – Requires weather or moisture based controllers for outdoor use Commercial – Requires a 20% reduction in indoor use – Separate indoor/outdoor meters, water budget and weather-based controllers for outdoor use

12. Water Conservation Element  Educational Programs  Use Assessments  Rebate & Incentive Programs Additional Conservation Opportunities Inventory of Existing Programs  Educational Outreach & Public Involvement  Land Use Planning & Design  Retrofits & Upgrades

13. Water Reuse Element  Recycled Water  Graywater  Harvested Rainwater Three Primary Sources

14. Recycled Water  Municipal Sources  Highly Treated (tertiary)  Multiple applications  Agricultural  Public Use Facilities  Parks, Schools, Golf Courses

15. Recycled Water  Expanding storage and distribution infrastructure  Dual plumbing in new development  Increased public outreach and education  On-site treatment and reuse for CII developments Additional Recycled Water Opportunities

16. Graywater Water that flows out of bathroom sinks, showers, And laundry equipment. Past: restrictive building codes, many illegal systems Present: Aug 09 code changes allow for simpler systems and unpermitted clothes washer systems Future: Local regulations and outreach/technical guidance and financing to support expanded graywater use

17. Rainwater Harvesting Present: – Rainwater harvesting rebates from City of Santa Rosa Future: – Further outreach/technical guidance to support expanded rainwater harvesting Rainwater harvesting conducted at the Occidental Arts and Ecology Center Photo: OACETimes

18. Stormwater Element – NPDES Permit New Phase 1 Municipal Stormwater Permit Issued October, 2009 by NCRWQCB (Order No. R1-2009- 0050) Co-permittees: SCWA, County, Santa Rosa Stormwater LID guided by permit requirements LID manual required by October, 2011 Prepared to benefit Phase 2 communities also

19. Fundamental LID Stormwater Management Principles 1.Avoid hydrologic impacts 2.Conserve existing soils, vegetation, and hydrologic features 3. Minimize impervious areas/maximize permeability 4. Manage stormwater on-site through LID features

20. Common LID Stormwater Approaches  Biofilters  Permeable Paving  Green Roofs  Rainwater Harvesting Systems  Subsurface Detention/Infiltration Strategies

21. LID Fact Sheets  Biofilters  Permeable Paving  Green Roofs  Rainwater Harvesting Systems  Subsurface Detention/Infiltration Strategies

22. What’s in a name? Low Impact Development Soon to be… Water Smart Development

23. www.sonomacountywater.org Comments or Questions?

24. www.sonomacountywater.org Regional Stormwater Management Groundwater Recharge Projects

25. Water Supply Strategy

26. Detention Concepts  Stormwater Detention  100-yr downstream flood protection  Groundwater Recharge  Along alluvial fan deposits  Multiple benefits  Open Space & Parks  Trails & Public Access  Stream Restoration  Habitat Enhancement  Sediment Capture  Water Quality

27. Channel Concepts  Channel widening  Bypass channel  Along permeable soil areas  Along historic channels  Multiple benefits  Flood Reduction  Groundwater Recharge  Habitat Enhancement  Bank Stabilization  Water Quality

28. Key Project Objectives  Achieve Measurable Flood Control and GW Recharge Benefits  Having regional effect  Maximize Additional Benefits to meet Funding Objectives  Proposition 84 and 1E  Build Collaborative Partnerships with Multiple Project Proponents  Stakeholder assessments

29. Scoping Studies  Develop Project Objectives  Conduct Stakeholder Assessment & Coordination  Develop Conceptual Project Alternatives  Evaluate Funding Opportunities  Scope Feasibility Study  Develop Project Implementation Strategy (Road Map) Consultants  Sonoma Creek Watershed – ESA PWA  Petaluma River Watershed – RMC Water and Environment  Laguna-Mark West Watershed – Winzler & Kelly

30. www.sonomacountywater.org Comments or Questions? Kent Gylfe kent.gylfe@scwa.ca.gov