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OC harbor brook wetlands stakeholder 6 15-11 final-1
 

OC harbor brook wetlands stakeholder 6 15-11 final-1

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The Harbor Brook CSO 018 Constructed Wetlands Pilot Treatment System Project serves the dual purposes of treating CSO 018 overflows currently discharged into Harbor Brook while also acting as a ...

The Harbor Brook CSO 018 Constructed Wetlands Pilot Treatment System Project serves the dual purposes of treating CSO 018 overflows currently discharged into Harbor Brook while also acting as a demonstration project to test the effectiveness of three types of constructed treatment wetland systems.

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OC harbor brook wetlands stakeholder 6 15-11 final-1 OC harbor brook wetlands stakeholder 6 15-11 final-1 Presentation Transcript

  • Prepared for:
    Onondaga County, Syracuse, New York
    Prepared by:
    2011
    Onondaga County CSO Program:Gray-Green InfrastructureHarbor Brook CSO 018 Constructed Wetlands Pilot Treatment SystemJoanne M. Mahoney, County Executive
    and
  • History
    1988 – Atlantic States Legal Foundation files lawsuit against County
    1989 – Litigation settled through METRO consent judgment
    1998 – METRO consent judgment replaced with Amended Consent Judgment (ACJ)
    1st ACJ amendment May 1998
    2006 ACJ Amended to include consolidation of ammonia and phosphorus treatment and Harbor Brook conveyances and RTF
    3rd Amendment April 2008 (Extension)
    2009 ACJ amended to authorize use of Gray and Green infrastructure
    Onondaga Lake Facts
    Watershed: 285 Square Miles
    1 Mile Wide – 4.6 Miles Long
    Average Depth: 35 feet
    Max Depth: 63 feet
    1940 – Swimming Banned
    1970 – Fishing Banned
  • Save the Rain Program: 2009-2018
    Regulatory Goals
    • Capture and Treat 95% of the Annual CSO Volume via Gray & Green Infrastructure
    • Achieve water quality standards in tributaries and lake
    Community Impacts/Goals
    • Improve quality of life
    • Promote Sustainability
    • Ensure cost effectiveness in compliance with ACJ milestones
    Major Milestones
    • 89.5% capture/elimination by 12/31/2013
    • 95% capture/elimination by 12/31/2018
  • Gray Infrastructure Program Summary
    Gray Projects
    • Harbor Brook Interceptor (ARRA)
    • Midland Conveyance (CSO 044)
    • Clinton Storage Facility and Electrical Ductbank
    • Harbor Brook Storage Facility and Conveyances
    • Erie Boulevard Storage System (EBSS) Gate Chamber #3 Improvement
    • Sewer separation projects
    • Floatables Control Facilities
  • Gray Project Construction Schedule
    CSO 022/045 Sewer Separation
    Consent Order Milestones: Complete Construction: 12/31/12
    Construction Period: September 2011 – June 2012
     
    Clinton Storage Facility
    Consent Order Milestones: Commence Construction: 10/1/11
    Complete Construction: 12/31/13
    Construction Period: August 2011 – December 2013
     
    Lower Harbor Brook Conveyances:
    Consent Order Milestones: Commence Construction: 12/31/11
    Complete Construction: 12/31/13
    Construction Period: September 2011 – June 2012
     
    Lower Harbor Brook Storage:
    Consent Order Milestones: Commence Construction: 12/31/11
    Complete Construction: 12/31/13
    Construction Period: October 2011 – December 2013
     
    Electrical Duct Bank on West Fayette Street ( Part of Clinton Storage Project)
    Consent Order Milestones: N/A
    Construction Schedule: July 2011 – October 2011
  • Harbor Brook Storage Project
    4.8 Million Gallons of storage (sub-surface)
    N
    Designed to capture rain water for system flushing/cleaning
    State Fair Blvd
    Captures
    CSO 003, 004, 063
  • Green Infrastructure Program
    Save the Rain Program
  • 6.3% Capture Using Green Infrastructure - Green 470 acres and reduce 247 MG/yr of CSO by 2018
  • Dept. of Transportation Parking Lot
  • Manages adjacent impervious areas
  • City Lot #3 - Before
  • Parking Lot #3
    Erie Boulevard
    Erie Boulevard
    Warren Street
    James Street
    Warren Street
    James Street
    Porous Concrete
    Captures over 700,000 gallons of stormwater annually
  • Roadways - Green Streets for Road and Utility Improvement / Reconstruction
  • CSO Treatment Wetland Project
    CSO 018
    Constructed Wetland
    Harbor
    Brook
  • Pilot Treatment System Benefits
    Pilot system will provide immediate water quality improvements:
    Grit and floatables (onsite at-grade structure)
    Bacteria
    Nutrients (nitrogen and phosphorus)
    Total suspended solids and BOD5
    Recommendation from pilot will result in a final permanent wetland treatment system
    Designed for 1-year, 2-hour storm event, but higher flows and volumes could be accepted
    May2011
    16
  • Existing Site
    May 2011
    17
  • Project Location
    The project is located along Harbor Brook on County property just south of Burnet Park on the west side of Syracuse near the Skunk City neighborhood.
    May 2011
    18
  • Site Enhancement Ultimate Vision
    Grit and floatables removal of CSO 018
    Wetland treatment of CSO 018
    Improved water quality in Harbor Brook
    Community park?
    Educational resource?
    May 2011
    19
  • Pilot Treatment Wetlands System
    March 2011
    20
    Surface Flow Wetland
    • Most closely resembles a natural wetland of robust native species
    • Vegetated shelf and deep water zones to redistribute and aerate
    • Medium to high storage volume
    • High habitat value
    • Low mosquito productivity
    • Relatively low cost
  • First Step to Site Enhancement
    May 2011
    21
    Design and construction of a 2 acre full scale pilot treatment wetland system along Harbor Brook at Combined Sewer Overflow (CSO) 018.
    VELASKO ROAD
  • Conceptual Rendering
    May 2011
    22
    Three types of wetlands will be constructed for pilot testing: Floating Wetland Island, Vertical Downflow, and Surface Flow.
  • 11/18/2010
    23
    Conceptual Rendering
  • Floating Wetland Islands
    May 2011
    24
  • Vertical Downflow Wetlands
    March 2011
    25
  • Surface Flow Wetland
    May 2011
    26
  • Questions and Discussion
    May 2011
    27
  • 11/18/2010
    28
    More information
  • Thank You!
    Please Visit us atwww.SaveTheRain.us