Onondaga County’s Green Infrastructure Program Joanne M. Mahoney, County Executive
Onondaga Lake Amended Consent Judgment (ACJ) Compliance Program
Green Improvement Fund (GIF) Public Information Meeting Tom Rhoads, Madison Quinn, Paul Legnetto OCDWEP Bj Adigun, Matthew Marko CH2M HILL May 30, 2013
Balanced Approach to CSO Abatement 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 through environmental responsibility • Promote sustainability • Ensure cost effectiveness in compliance with ACJ milestones • Community revitalization
Major Milestones • 89.5% capture/elimination by 12/31/2013 • 95% capture/elimination by 12/31/2018
5/30/13
2
5/30/13
Save the Rain Program Highlights • 100+ projects completed or under construction • 100+ million gallons runoff captured annually • Signature projects: ▫ ▫ ▫ ▫ ▫ ▫
OnCenter Green Roof War Memorial Reuse System HB Wetland Library Projects Vacant Lot Initiative Urban Forestry & Rain Barrel Programs
• Green Improvement Fund Program
3
5/30/13
Green Program Update
4
Otisco Street
Water Street Gateway Courts-4-Kids
OnCenter Green Roof
Urban Forestry Program
Connective Corridor
City Lot # 4
Townsend Parking Lot B
Pass Arboretum Park
GIF Program Highlights • Program Statistics
▫ 117 applications submitted for grant funding todate ▫ 36 grant awarded projects completed ▫ 54 projects under contract for 2013 construction season ▫ 10 applications currently being evaluated and finalized (Note: 17 applications failed to receive grant funding) ▫ For those Projects Completed: ▫ 14.2 Million Gallons removed from combined sewers (annually)
5/30/13
5
GIF Program Projects Monroe Building Dunbar Association King & King Architects Hotel Skyler
Mister Lady Bug Copper Beech Commons Jefferson-Clinton Commons
5/30/13
6
5/30/13
GIF Program The Green Improvement Fund (GIF) is a grant program to incentivize the development of green infrastructure stormwater mitigation techniques on private property
7
GIF Program To-Date • Program Evolution
▫ GIF 1.0 (March 2010) $3 million pilot program $100K funding limit per project/ $250K for multiple projects 25 applications submitted
▫ GIF 2.0 (June 2011)
Full-program (pilot complete), expanded geography $200K funding limit per project Greater emphasis on gallon capture 60 applications submitted
▫ GIF 3.0 (July 2012)
Funding limits eliminated Revised Program Description and streamlined Application Greater emphasis on efficiency in GI implementation 20 applications submitted
5/30/13
8
5/30/13
GIF Program Boundary Has Evolved
March 2010 – Pilot Area
9
5/30/13
GIF Program Boundary
June 2010 – Removing Midland RTF
10
5/30/13
GIF Program Boundary
June 2011 – Expanded Geography
11
5/30/13
GIF Program Boundary
March 2013 (most recent version)
12
5/30/13
13
Stormwater Management Model (SWMM)
SWMM Analysis ▫ USEPA developed publicly available software that estimates stormwater runoff within sewersheds • Tracks individual CSO’s and drainage areas ▫ Evaluation method for measuring ACJ compliance ▫ Model updated in 2012 ▫ The update included an upgrade to software version 5.0.022; the incorporation of the Low Impact Development (LID) module; and the inclusion of more accurate physical data, LIDAR topology, an aerial survey of imperviousness, USDA soil survey parameters, the 012‐2013 regulator weir survey, ArcHydro sub‐catchment delineation, intra‐sub‐catchment routing, and real time control (RTC) programming ▫ Models all system components in one model, including the benefits of storage systems
5/30/13
14
5/30/13
Original Model Network - 2011
15 • 2 separate models with free outfalls
Onondaga Lake
• HBIS: 3 pump stations (PS) • MIS: 1 PS, 1 RTF and EBSS gates • Not geo-referenced • Used SWMM default infiltration parameters • Imperviousness obtained by visual interpretation of aerial photos
HBIS
MIS
• Simplified wet weather operation controls • Model network vs GIS trunk sewer alignments (shown as background)
Submitted as part of 2012 ACJ Annual Report
•Updated Model Network - 2012 Onondaga Lake
5/30/13
• One combined model with refined boundary conditions (Metro Headworks) • 1,807 vs. 503 nodes; 1,909 vs. 577 conduits; and 456 vs. 94 subcatchments • HBIS: 3 pump stations (PS) • MIS: 4 PS, 2 RTFs and modified EBSS gates • Geo-referenced • Used USDA soil survey data • Imperviousness based on Syracuse aerial survey GIS land cover and supplemented with Landsat imagery
HBIS
MIS
• Improved wet weather operation controls • Calibrated Creek/Brook tailwater conditions based on USGS stream gauges(
16
Surface Hydrology • Subcatchment Delineation with ArcHydro Procedures • Imperviousness Characterization • Infiltration Methodology
Onondaga Lake
5/30/13
17
Subcatchment-Flow Routing
impervious pervious impervious
5/30/13
18
Manhole to combined sewer
Pr ec ipi ta t i
on
Incorporate Green Infrastructure Modeling (SWMM Low Impact Development [LID] Module)
her m ot o r f f f Runo as t Are n e m h Catc
Surface Layer Infiltr.
ts Outle o T flow Over
Evaportranspiration
Perc.
Soil Layer
s
Storage Layer Underdrain
Bio-retention Cell
Infiltr.
tlet Ou o in T Dra
5/30/13
19
Combined Sewer System (CSS) Map revised May 2013
5/30/13
20
SWMM Optimization Example
5/30/13
21
Impact on GIF
5/30/13
22
Successful projects implemented to date (Gray + Green), and a better understanding of the system through SWMM, enables a more strategic approach to CSO abatement ▫ New program boundary based on updated SWMM • Site verification as necessary to confirm boundary conditions ▫ Strategic approach to GIF incentives ▫ Some CSO-sheds are successfully completed and will be eliminated ▫ For CSO’s that remain in program, proposed funding incentives will be prioritized based on efficiency (High, Medium, Low) ▫ GIF submission and review procedures to remain unchanged ▫ Largely unchanged Program Description and Application, as well as new program Map available via STR website (www.savetherain.us) ▫ GIF award calculator spreadsheet will be made public and available during application development
5/30/13
GIF Calculator
23
▫ The GIF “calculator” is the tool where the business case for grant funding is justified, evaluating runoff reduction and cost of work to determine a grant award amount ▫ Based on some basic site specific input data, the proposed runoff reduction is calculated, and has a monetary value (“volume based compensation”) ▫ Based on the proposed scope of work, combined with typical GI installation costs across the program area, the cost to complete the work is estimated The applicant is awarded, on a line item basis, the lesser of the amounts (value for runoff reduction, vs. maximum cost of work)
5/30/13
GIF Calculator
24
Other items of interest: ▫ Funding for Green Roof projects is on par with porous pavement systems ▫ Minimum project size of 60,000 gallons (runoff per year) ▫ Calculator can be used for “capture and slow release” as well as “water reuse” systems* ▫ Calculator can be used for “green separation” projects* ▫ Some itemized “gray” items may be eligible for reimbursement if they are required to facilitate the GI* ▫ Engineering compensation is a function of construction cost ▫ Field Testing has a maximum amount ▫ We no longer compensate for Structural Analysis *consultation with WEP recommended
DRAFT
SWMM 25 Impact on GIF 5/30/13
▫ Proposed funding per gallon runoff to remain at $0.30 for high priority areas*
▫ Proposed medium priority areas to receive $0.20/gallon ▫ Proposed low priority areas to receive $0.10/gallon ▫ Some CSOs eliminated from program
DRAFT
*$0.25 for projects over 500,000 gpy
Schedule
5/30/13
26
▫ Moratorium to end mid-June 2013 ▫ GIF projects under contract are not affected by moratorium ▫ GIF applications received but not under contract will be evaluated using both old & new policy guidelines ▫ It will take approximately 25-30 days to process backlog ▫ New applications will be reviewed under new program guidelines ▫ New guidelines to remain in place for 6 month period ▫ Program to be closed to new applications at noon on December 16, 2013 and re-evaluated ▫ SWMM update will be performed, including new prioritization ▫ Goal is to re-open application process in Feb-March 2014 for upcoming construction season
5/30/13
27
Question/Answer
Thank You! Questions? Please Visit us at www.SaveTheRain.us