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EPA’s New Strategy on Green
                    Infrastructure

Region V Partner: Cleveland/Northeast
          Ohio Regional Sewer District

               Kellie C. Rotunno, P.E., BCEE, M.ASCE
              Director of Engineering & Construction
Agenda

• NEORSD CSO Plan Overview
• How NEORSD’s Consent Decree
  Turned Green
• Cleveland’s GI Opportunities
• Cleveland’s GI Realities
  – Lifecycle Cost Comparisons
• Pathway to Compliance
Service Area (355 sq. mi.)


Combined Sewer Area (81 sq. mi)
Combined Sewer Area
Combined Sewer Overflows

NEORSD CSO PLAN
OVERVIEW
NEORSD CSO Plan
  Level of Control




     97%
    Capture       98%
                 Capture



     2002 Plan    2010 CD
400 MGD
                                      Chemically
                                    Enhanced High-
                                    rate Treatment



                                       Expansion of
                                   secondary Treatment
                                   capacity to 400 MGD




 411 MGD
Chemically
Enhanced
 High-rate
Treatment




                 Expansion of
              secondary capacity
                     and
             Chemically Enhanced
             High-rate Treatment




                  7
NEORSD CSO LTCP Consent Decree
                $3B Investment in CSO Control Measures over
                                                   25 Years
       $230,000,000                            Tunnels
  $14,000,000
$370,000,000                                   Sewer Improvements (consolidation
                                               sewers, relief sewers)

                                               Green Infrastructure (Minimum
                                               Amount of Investment)

                                               Plant Improvements
        $310,500,000          $1,530,000,000
                                               Pump Stations


               $486,000,000                    Storage Tanks
$52,500,000
                                               Other
Combined Sewer Overflows

THE GREENING OF A CSO
ENFORCEMENT ACTION
Increased Tunnel Sizes
                            Considered to Further
                                    Enhance LOC
                                      December
                           Original
                                        2009
                                                            Difference
                            Plan
                                      Proposal
                                               Increased Add’l Vol.Ctrl. Cost / Add'l
                           Dia   OF   Dia   OF    Cost       (MG)            Gal

Shoreline Storage Tunnel   21’    3   25’   1    $63.8 M       14.62        $4.36

Doan Valley Tunnel         17’    3   20’   1    $42.5 M       12.73        $3.34

Westerly Tunnel            18’    4   28’   1    $75.7 M       35.04        $2.16

                                      Totals     $182 M     62.39 MG        $2.92
Doan Valley Tunnel Sizing
                                          Maintained (upsized
                                          consolidation sewers)

           Shoreline Tunnel Sizing
           Maintained (upsized
           consolidation sewers)




Westerly Tunnel Increased
From 18’ to 24’




                                     11
Additional Levels of Control
                                   Achieved Through
                             Traditional Gray and GI
        Tunnel System                Additional Capital   Additional Annual
                                        Costs ($M)        CSO Capture (MG)
Shoreline Tunnel                            $11                 3.07
(Upsized Consolidation Sewers)

Doan Valley Tunnel                         $2.27                1.12
(Upsized Consolidation Sewers)

Westerly Tunnel                           $39.87                14.02
(Upsized tunnel from 18’ to 24’)

                          Subtotal        $53.14               18.21
         Additional Annual CSO
                                                                62.39
                  Capture Goal
         Remaining Annual CSO
                                           $42M                 44.18
                  Capture Goal
Green Infrastructure (GI)
          Proposed In-lieu of Bigger Tunnels

    LOC   b
                                                        44
    LOCa         District Proposed Gray CSO             MG




                                                 District Proposed Gray CSO
Million
                            Capture




                                                            Capture
Gallons




               District                       District Proposal
              Proposal                            + Green
                                               Infrastructure
CONSENT DECREE GREEN
                                                  INFRASTRUCTURE
                 Appendix 3: 44 million gallons
                                                   Components
Appendix 4: Green for Gray

                                                    Appendix 3: 44
                             REMAINING               MG of additional
                                                     CSO control
                                                     through GI
                                                    Appendix 4:
                GRAY CAPTURE                         Opportunity to
                4,037 million gallons
                                                     replace gray with
                                                     green
                                                     infrastructure
Consent Decree Requirements
Consent Decree Timelines
                                                      Appendix 3
       Appendix 3
                                                      Compliance
       GI Plan
                                                      Review
       Submittal




               Appendix 3
               Post Construction
               Monitoring Plan
               Submittal



2010                   GRAY INFRASTRUCTURE TIMELINE                2035
USEPA Region V GI Partner
                        Cleveland/NEORSD
Green Infrastructure      USEPA works with partners
partners
   –   Austin
                          as model communities
   –   Boston
                          • Advance GI
   –   Cleveland
   –   Denver             • Inform and guide
   –   Jacksonville         national policy
   –   Kansas City
   –   Los Angeles
   –   Puyallup, WA
   –   Syracuse
   –   Washington, DC
Reshaping Cleveland’s Urban Drainage Systems

CLEVELAND’S GI
OPPORTUNITIES
Cleveland’s CSO Area is More
Than 80-Percent Impervious
Cleveland’s CSO Area Has
  Significant Vacant Land
                 Available
Remaining CSO Volumes are
Geographically Dispersed




            INSERT MAP
Identification of
                                             Priority Areas
                                          for 44 MG/$42 million

Green Infrastructure Index

                                                   Well-drained soils

                                                   Available land

                                                   Partnering
                                                   opportunities
                                                   Imperviousness

                                                   Parks > 3 acres

                                                   Greenways

  Annual CSO volume   Collection system response   Development
                                                   opportunities
NEORSD’s Priority GI
              Areas
Areas of Remaining CSO
 Volumes Modeled to Measure
Responsiveness to Changes in
                       DCIA
1000   0%




                                                 Percent Decrease in Overflow Volume (MG)
                                          10%
Remaining Annual CSO Volume (MG)    100
                                          20%

                                          30%
                                     10
                                          40%

                                          50%
                                      1

                                          60%

                                    0.1   70%

                                          80%
                                   0.01
                                          90%

                                          100%
                         0.001
CSO Reductions From
                      Stormwater Control
Stormwater Gallons Controlled

      1       2      3


      4       5      6               1

                                 CSO Gallon
      7       8      9           Controlled

             10
Concept for Priority
                                Area E-11


                         Green street and new
                         storm sewer in trench
  Stormwater                with relief sewer
control in Beulah
      Park




          Use existing separate
             storm sewers
Concept for Priority
            Area E-11




Incorporate GI          Potential for 2.5
features within         million gallons of CSO
Tunnel/Relief Sewer     reduction in typical
construction corridor   year
Combined Sewer Overflows

CLEVELAND’S GI REALITIES
Zeroing-in on 44 MG of
                       Additional CSO Control


  CSO Area: 52,000 Acres




Priority Areas ~13,000 Acres



 GI Projects ~1,000 Acres
Approach within
                          Priority Areas
• Approach to site evaluation and project
  development
  – Seek stormwater offloading opportunities
    where possible
  – Incorporate community and transformational
    benefits
  – Repurpose vacant land
  – Support viable partners
Land Requirements &
                                     Partnerships
Land Requirements – Maximize use of
  vacant land
• City of Cleveland
• Cuyahoga County Land Reutilization Corporation
Partnership Opportunities – Build on
  existing efforts
•   University Circle Inc.
•   Burten, Bell, Carr Community Development Corporation
•   Slavic Village Community Development Corporation
•   Greater Cleveland Regional Transit Authority
•   Neighborhood Progress, Inc.
•   ParkWorks
•   Cleveland Urban Design Collaborative
Combined Sewer Overflows

GREEN-FOR-GRAY
OPPORTUNITIES (APPENDIX 4)
Green-for-Gray
                       Opportunities

• Consent Decree Appendix 4 allows on-
  going evaluation for eliminating or down-
  sizing of Gray Infrastructure through use
  of GI
• No timeframe limitations other than
  linkage to associated gray project design
EPA's new strategy on gi region v partner
EPA's new strategy on gi region v partner
EPA's new strategy on gi region v partner
EPA's new strategy on gi region v partner
Lifecycle cost estimates
                        Developed consistent with “Gray”

• Lifecycle costs             Lifecycle
                              Costs




                                             Replace /
                                              Renew




                                                              O&M
• Design & construction
   Operation &
    maintenance
     Energy costs




                                               O&M




                                                              Construction
     Maintenance

     Operations




                                               Construction
   Replace / Renew
     Restore effectiveness

     Other Benefits: “triple bottom line”

                                             Green            Gray
Combined Sewer Overflows

PATHWAY TO COMPLIANCE
AND GREEN LESSONS
GI Compliance
                         Requirements
• GI Study Submittal December 31, 2011
• Use of hydraulic/hydrologic model
  – Demonstrate Final LOC provided by CSO
    LTCP Projects
  – Demonstrate Final LOC including CSO LTCP
    Projects + GI Projects
• Evaluation of EJ Considerations as co-
  benefit to GI Program
Next Steps in GI Program
                                          Development and
                                            Implementation
 Appendix 3: GI
Feasibility Study
                                                                  Complete

  Appendix 4:                                                     Remaining
  Doan Valley
   Tunnel “


  Preliminary
(30%) Design of
  GI Projects                                                             Consent
                                                                         Decree GI
 GI Early Action
     Project                                                             Completion
Identification, Fi                                                        Mandate
  nal Design &                                                            7/8/2019
  Construction

  Full Program
Final Design and
  Construction


                     2010   2011   2012   2013   2014   2015   2016   2017   2018   2019
Green Lessons Learned
• Focus on “Additional CSO Capture” skews
  the type and locations of GI Projects
• GI behaves differently than Gray
  Infrastructure throughout the range of
  anticipated storms
• Focus on CSO volume reductions requires
  hydraulically different approach from
  traditional stormwater LID

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EPA's new strategy on gi region v partner

  • 1. EPA’s New Strategy on Green Infrastructure Region V Partner: Cleveland/Northeast Ohio Regional Sewer District Kellie C. Rotunno, P.E., BCEE, M.ASCE Director of Engineering & Construction
  • 2. Agenda • NEORSD CSO Plan Overview • How NEORSD’s Consent Decree Turned Green • Cleveland’s GI Opportunities • Cleveland’s GI Realities – Lifecycle Cost Comparisons • Pathway to Compliance
  • 3. Service Area (355 sq. mi.) Combined Sewer Area (81 sq. mi)
  • 6. NEORSD CSO Plan Level of Control 97% Capture 98% Capture 2002 Plan 2010 CD
  • 7. 400 MGD Chemically Enhanced High- rate Treatment Expansion of secondary Treatment capacity to 400 MGD 411 MGD Chemically Enhanced High-rate Treatment Expansion of secondary capacity and Chemically Enhanced High-rate Treatment 7
  • 8. NEORSD CSO LTCP Consent Decree $3B Investment in CSO Control Measures over 25 Years $230,000,000 Tunnels $14,000,000 $370,000,000 Sewer Improvements (consolidation sewers, relief sewers) Green Infrastructure (Minimum Amount of Investment) Plant Improvements $310,500,000 $1,530,000,000 Pump Stations $486,000,000 Storage Tanks $52,500,000 Other
  • 9. Combined Sewer Overflows THE GREENING OF A CSO ENFORCEMENT ACTION
  • 10. Increased Tunnel Sizes Considered to Further Enhance LOC December Original 2009 Difference Plan Proposal Increased Add’l Vol.Ctrl. Cost / Add'l Dia OF Dia OF Cost (MG) Gal Shoreline Storage Tunnel 21’ 3 25’ 1 $63.8 M 14.62 $4.36 Doan Valley Tunnel 17’ 3 20’ 1 $42.5 M 12.73 $3.34 Westerly Tunnel 18’ 4 28’ 1 $75.7 M 35.04 $2.16 Totals $182 M 62.39 MG $2.92
  • 11. Doan Valley Tunnel Sizing Maintained (upsized consolidation sewers) Shoreline Tunnel Sizing Maintained (upsized consolidation sewers) Westerly Tunnel Increased From 18’ to 24’ 11
  • 12. Additional Levels of Control Achieved Through Traditional Gray and GI Tunnel System Additional Capital Additional Annual Costs ($M) CSO Capture (MG) Shoreline Tunnel $11 3.07 (Upsized Consolidation Sewers) Doan Valley Tunnel $2.27 1.12 (Upsized Consolidation Sewers) Westerly Tunnel $39.87 14.02 (Upsized tunnel from 18’ to 24’) Subtotal $53.14 18.21 Additional Annual CSO 62.39 Capture Goal Remaining Annual CSO $42M 44.18 Capture Goal
  • 13. Green Infrastructure (GI) Proposed In-lieu of Bigger Tunnels LOC b 44 LOCa District Proposed Gray CSO MG District Proposed Gray CSO Million Capture Capture Gallons District District Proposal Proposal + Green Infrastructure
  • 14. CONSENT DECREE GREEN INFRASTRUCTURE Appendix 3: 44 million gallons Components Appendix 4: Green for Gray  Appendix 3: 44 REMAINING MG of additional CSO control through GI  Appendix 4: GRAY CAPTURE Opportunity to 4,037 million gallons replace gray with green infrastructure Consent Decree Requirements
  • 15. Consent Decree Timelines Appendix 3 Appendix 3 Compliance GI Plan Review Submittal Appendix 3 Post Construction Monitoring Plan Submittal 2010 GRAY INFRASTRUCTURE TIMELINE 2035
  • 16. USEPA Region V GI Partner Cleveland/NEORSD Green Infrastructure USEPA works with partners partners – Austin as model communities – Boston • Advance GI – Cleveland – Denver • Inform and guide – Jacksonville national policy – Kansas City – Los Angeles – Puyallup, WA – Syracuse – Washington, DC
  • 17. Reshaping Cleveland’s Urban Drainage Systems CLEVELAND’S GI OPPORTUNITIES
  • 18. Cleveland’s CSO Area is More Than 80-Percent Impervious
  • 19. Cleveland’s CSO Area Has Significant Vacant Land Available
  • 20. Remaining CSO Volumes are Geographically Dispersed INSERT MAP
  • 21. Identification of Priority Areas for 44 MG/$42 million Green Infrastructure Index Well-drained soils Available land Partnering opportunities Imperviousness Parks > 3 acres Greenways Annual CSO volume Collection system response Development opportunities
  • 23. Areas of Remaining CSO Volumes Modeled to Measure Responsiveness to Changes in DCIA
  • 24. 1000 0% Percent Decrease in Overflow Volume (MG) 10% Remaining Annual CSO Volume (MG) 100 20% 30% 10 40% 50% 1 60% 0.1 70% 80% 0.01 90% 100% 0.001
  • 25. CSO Reductions From Stormwater Control Stormwater Gallons Controlled 1 2 3 4 5 6 1 CSO Gallon 7 8 9 Controlled 10
  • 26. Concept for Priority Area E-11 Green street and new storm sewer in trench Stormwater with relief sewer control in Beulah Park Use existing separate storm sewers
  • 27. Concept for Priority Area E-11 Incorporate GI Potential for 2.5 features within million gallons of CSO Tunnel/Relief Sewer reduction in typical construction corridor year
  • 29. Zeroing-in on 44 MG of Additional CSO Control CSO Area: 52,000 Acres Priority Areas ~13,000 Acres GI Projects ~1,000 Acres
  • 30. Approach within Priority Areas • Approach to site evaluation and project development – Seek stormwater offloading opportunities where possible – Incorporate community and transformational benefits – Repurpose vacant land – Support viable partners
  • 31. Land Requirements & Partnerships Land Requirements – Maximize use of vacant land • City of Cleveland • Cuyahoga County Land Reutilization Corporation Partnership Opportunities – Build on existing efforts • University Circle Inc. • Burten, Bell, Carr Community Development Corporation • Slavic Village Community Development Corporation • Greater Cleveland Regional Transit Authority • Neighborhood Progress, Inc. • ParkWorks • Cleveland Urban Design Collaborative
  • 33. Green-for-Gray Opportunities • Consent Decree Appendix 4 allows on- going evaluation for eliminating or down- sizing of Gray Infrastructure through use of GI • No timeframe limitations other than linkage to associated gray project design
  • 38. Lifecycle cost estimates Developed consistent with “Gray” • Lifecycle costs Lifecycle Costs Replace / Renew O&M • Design & construction  Operation & maintenance  Energy costs O&M Construction  Maintenance  Operations Construction  Replace / Renew  Restore effectiveness  Other Benefits: “triple bottom line” Green Gray
  • 39. Combined Sewer Overflows PATHWAY TO COMPLIANCE AND GREEN LESSONS
  • 40. GI Compliance Requirements • GI Study Submittal December 31, 2011 • Use of hydraulic/hydrologic model – Demonstrate Final LOC provided by CSO LTCP Projects – Demonstrate Final LOC including CSO LTCP Projects + GI Projects • Evaluation of EJ Considerations as co- benefit to GI Program
  • 41. Next Steps in GI Program Development and Implementation Appendix 3: GI Feasibility Study Complete Appendix 4: Remaining Doan Valley Tunnel “ Preliminary (30%) Design of GI Projects Consent Decree GI GI Early Action Project Completion Identification, Fi Mandate nal Design & 7/8/2019 Construction Full Program Final Design and Construction 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
  • 42. Green Lessons Learned • Focus on “Additional CSO Capture” skews the type and locations of GI Projects • GI behaves differently than Gray Infrastructure throughout the range of anticipated storms • Focus on CSO volume reductions requires hydraulically different approach from traditional stormwater LID

Notes de l'éditeur

  1. Created in 1972 by Court Order Political subdivision of the State of Ohio Governed by a seven-member Board Has a 355 square-mile service area Serves all or part of 62 communities Serves over one million people Treats 230 million gallons of wastewater per day
  2. Collinwood Rec – basins in front on Lakeshore and in rear by Humphey Park, bioswales in parking lots, 15000 gallon cistern for roof runoff and collecting back portion of Humphey Park because of past wet areas – added swale to bring into basin. Designed to LEED standards.2.4 MG of CSO reduction