Agenda

1
(No Transcript)
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 Towns 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

13
(No Transcript)
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!