Agenda

2. Agenda • Review project scope and goals • Update project status • Review results of public surveys • Identification of capital projects • Draft capital improvement plan • Moving forward

3. Roadmap for Managing Stormwater • Capital improvement projects • Project specific solutions • Regional solutions if applicable • Estimated capital costs • Priority list • Water quality recommendations • Town outfalls • Best Management Practices (structural and non-structural)

4. Roadmap for Managing Stormwater • GIS mapping • Master planning • Maintenance • BMP retrofits • Stormwater ordinances • Flood control • Water quality • Stakeholder involvement • Town staff • Public survey/meetings

5. Project Update • Project update to Board on April 5, 2006 • Field survey • GPS field collection completed • Vertical survey completed at select locations • Public input • May 2006 – Stormwater Management Survey sent to property owners within the Town • Two public meetings held on June 8, 2006

6. Project Update • Existing conditions modeling complete • Potential project locations identified • Alternatives analysis complete • Draft capital improvement plan submitted for Town review on October 18, 2006

7. Public Survey Results • 4,668 surveys mailed to Town property owners using the mailing list from the Town’s quarterly Newsletter. • 638 surveys completed and returned, or filled out on-line • 13.7% response rate

8. Public Survey Results

9. Public Survey Results

10. Public Survey Results Property Flooding • Storage Building – 43 • HVAC Flooding – 11 • Crawl Space Flooding – 28 • Living Space Flooding – 29 • Yard flooding from stream/ditch – 70 • Yard Flooding from street runoff – 137 • Yard flooding from adjacent property - 85

11. Project Identification • Flood control projects • Project list provided by Town Staff • Feedback from residents (surveys and public meetings) • Hydrologic and hydraulic modeling results • Water quality projects • GIS layers (aerial photography, land use, stormwater inventory, topography) • Field reconnaissance • Flood control project locations

12. Capital Improvement Plan • 26 total projects proposed • 19 projects proposed to reduce roadway, structural, and property flooding and provide water quality treatment, if feasible • 7 projects proposed as water quality retrofits to predominantly treat areas draining to Town maintained outfalls • Projects will reduce the amount of pollutants reaching critical waterbodies

14. Capital Improvement Plan • Flood control projects reduce flooding by: • Providing drainage where no drainage system currently exists • Increasing capacity of drainage systems that are currently under capacity • Reestablishing compromised drainage systems • Providing water quality treatment where feasible using vegetative conveyance, BMPs, or other treatment devices

15. Capital Improvement Plan Flood Control Project Components • Project description • Existing level of service • Proposed improvements • Proposed level of service • Estimated construction costs • Ownership and maintenance responsibilities • Potential for grant funding

16. Capital Improvement Plan • Water quality projects improve water quality by: • Providing regional water quality treatment if feasible • Using pocket practices predominantly for commercial areas (highly impervious areas) • Focusing on areas draining towards Town maintained outfalls • Treating runoff from the first 1.5 inches of rainfall

17. Capital Improvement Plan Water Quality Project Components • Project description • Drainage area • Percent impervious • Proposed improvements • Volume stormwater treated • Estimated construction costs

18. Moving Forward • Draft CIP plan under review by Town Staff • Address Town comments on CIP plan and submit complete report • Finalize report based on any additional Town comments

19. Thank you!