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Crafting Stormwater Programs Oregon Coastal Planners Fall Network Meeting October 9, 2008 Florence Event Center Alissa Maxwell, PE.

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Presentation on theme: "Crafting Stormwater Programs Oregon Coastal Planners Fall Network Meeting October 9, 2008 Florence Event Center Alissa Maxwell, PE."— Presentation transcript:

1 Crafting Stormwater Programs Oregon Coastal Planners Fall Network Meeting October 9, 2008 Florence Event Center Alissa Maxwell, PE

2 Major Stormwater Program Elements Design Standards Development Review and Inspection Stormwater Master Plan and Management Plan Stormwater Utility Ordinances

3 Design Standards Goals: ► Requirements and Engineering Standards for new developments ► Preserve water quality, protect downstream watercourses, limit erosion ► Set a level playing field for proposed developments Design Standards should be: ► Consistent with Environmental Regulations ► Regionally appropriate ► Tailored to local community concerns

4 Design Standards Primary: ► Flow Control ► Water Quality Treatment ► Conveyance ► Erosion Control Secondary: ► Calculation Methods ► Low Impact Design ► Source Control ► Maintenance Thresholds and Exemptions: ► Flow control not appropriate near major waterways or ocean ► 5,000 sf impervious or 1 acre total development ► Reduced requirements for single lot developments

5 Design Standards Performance Based ► Developer must prove certain outcomes will be met ► Municipal staff must review and approve designs and analysis methods ► Data intensive ► High cost for every project Design Based ► Identifies a set of acceptable facilities, BMPs, and analysis methods ► Developers know the rules ahead of time ► Clearer review guidelines for municipal staff ► Predictable, consistent requirements and costs

6 Development Review and Inspection ► Planning Submittal  General facility overview  Background Investigations – soils, wetlands, etc ► Construction Plan Submittal  Engineering Details  Design Report ► Inspections  Erosion and Sediment Control measures  Stormwater Facility Installation  Final Site Stabilization

7 Stormwater Master Plan and Management Plan ► Stormwater Master Plan  Identifies Infrastructure needs now and in the Future ► Stormwater Management Plan  Outlines Activities and Operations Management Plan Topics: ► Inventory and Mapping ► Maintenance  Frequency, Standards, Budget, Staffing, Equipment ► Capital Program  From Stormwater Master Plan, Needs Inventory, or Regional Planning ► Public Education ► Regulatory Compliance

8 Stormwater Utility ► Dedicated Funding Source ► Separate Stormwater Program Operating Budget  Used for operations, maintenance, and capital projects ► Increasingly Common in Pacific Northwest Funding Sources: ► Utility fee on all properties  Rates based on impervious coverage  Typically $4-$12/month per residential property ► SDCs for new development ► Grants, Loans, Bonds

9 Ordinances ► Adopt Design Standards ► Adopt Stormwater Master Plan and/or Management Plan ► Establish Utility Structure and Rates ► Prohibit Illicit Discharges ► Establish Enforcement Authority Model ordinances are available

10 Next Steps for Coastal Communities ► Partner together to establish Design Standards  Cost and Time Effective  Consistent standards through the region  Base standards on accepted best practices and existing manuals ► Adopt Ordinances and/or Stormwater Utility  Use model ordinances tailored to local needs  Widespread adoption helps develop community and council support ► Partner to develop and distribute educational material

11 Resources EPA Training Webcastswww.epa.gov/npdes/training www.epa.gov/npdes/training Free live and archived webcasts on stormwater program topics. Stormwater Manager’s Resource Centerwww.stormwatercenter.net www.stormwatercenter.net Technical tools and resources; slide shows, manuals, checklists, and model ordinances. Center for Watershed Protectionwww.cwp.org www.cwp.org Research, design manuals, program guidelines, and model ordinances. Puget Sound Partnershipwww.psp.wa.gov/ www.psp.wa.gov/ Publications from the Puget Sound Action Team – the leading resource for low impact development guidance in the Pacific Northwest.

12 Resources: Design Manuals City of Portland BES Stormwater Management Manual http://www.portlandonline.com/bes/index.cfm?c=47952& Clean Water Services Design and Construction Standards http://www.cleanwaterservices.org/PermitCenter/DesignAndConstruction/default.aspx Stormwater Management Manual for Western Washington http://www.ecy.wa.gov/programs/wq/stormwater/manual.html ODOT Hydraulics Manual http://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/hyd_manual_info.shtml DEQ Erosion and Sediment Control Manual http://www.deq.state.or.us/wq/stormwater/escmanual.htm Rogue Valley Stormwater Quality Design Manual http://www.rvss.us/Documents/Stormwater/DesignManual.pdf Central Oregon Stormwater Manual http://www.coic.org/stormwater/index.htm

13 Contact Information Alissa Maxwell, PE Water Resources Engineer | Otak, Inc 541.385.9960 | alissa.maxwell@otak.com

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