Conservation Foundation Beyond the Basics Seminar Woodridge, IL September 10, 2014 Pete Yakimowich, PE

Transcription

1 Incentivizing a Green Water Quality Program Conservation Foundation Beyond the Basics Seminar Woodridge, IL September 10, 2014 Pete Yakimowich, PE

2 Water Quality-Part of a Bigger Picture Re-envisioning a City Chattanooga, TN

3 MS4 Compliance Program Driven Develop design standards for all new and redevelopment designed, built, and maintained to infiltrate, evapotranspire, harvest, and/or use, at a minimum, the first inch of rainfall, with no discharge to surface water. (SOV) Develop and implement strategies to establish, protect, maintain Program for Green Infrastructure Impaired waters measures Water quality buffers Flexibility to meet standards Incentives for redevelopment, brownfields, high-density, vertical-density, mixed-use, transit-oriented

4 Why 1-inch Rainfall? Frequency: Most of the time, it rains 1 inch or less Annual Percentages of Volume from Storms More than 90% of the annual rainfall volume is from storms 3 inches or less. Volume Capture = Water Quality Improvement

5 New Stormwater Rules Volume management through infiltration, evapotranspiration, or harvest/reuse (SOV) Water quality treatment when required volume control not Achieved (WQv) Offsite mitigation or fee for SOV not achieved Incentives for exceeding SOV

6 Water Quality Management Options SOV Infiltration/ evapotranspiration harvesting / reuse bioretention WQv = 2.1 in. Biotreatment WQv = 1-yr, 24 hr. High-rate biofilter Vault-based filter

7 The Challenge Beyond Compliance

8 Systems Approach Beyond Water Protect water and natural resources LID/GI approach to development Opportunities for revitalization Opportunities that address multiple concerns Green complete streets Efficient parking Bring social, cultural, historic and environmental aspects together

9 A Triple Bottom Line Approach Social Aesthetics Agriculture Community Education Health Safety Economic Infrastructure Property Development Jobs Growth Environment Air Water Energy Habitat Noise Recreation

10 Economic Component-Creating a Market in Volumetric Trading Funding for retrofits Tailored to development type and watershed Marketable SOV credit in CF of storage Offsite mitigation fee at 150% of cost for unmet SOV For developers and owners Incentives Framework Registry Retrofits incentivized

11 Program Objectives 1 2 Encourage development in areas that better accommodate GI practices Provide a market-based approach that facilitates trading 3 Facilitate and encourage redevelopment and retrofit 4 Provide a balanced approach to credits and fees 5 Provide flexibility in meeting the new standards

12 Funding Incentivize Private Participation Market-Based Stormwater Credit Trading Washington DC (SRC stormwater retention credit) Chattanooga, TN (SOV stay-on volume) Both cities have a requirement for stormwater retention of a specified rainfall Both cities will provide a market based system for trading in stormwater volume Both cities have a fee-in-lieu provision for unmet retention DC fee = $3.50/gal annually Chattanooga fee = $45.00/cf (one time) Both cities to maintain a registry

13 Chattanooga Incentive and Credit Components 1 Water Quality Fee Discounts retrofits get up to 80% 2 Mitigation Credits buy, sell, use 3 Mitigation Fees used for City retrofits 4 Offsite Mitigation redevelopment & retrofit only

14 WQ Fee Discounts (user fee) No discounts for peak rate control SOV exceedance only Residential exclusion No minimum ERU Minimum WQFD = 10% Maximum based on development category 50% for new development 70% for redevelopment 80% for retrofit

15 WQ Fee Discounts (user fee) All site BMPs must be in compliance with City standards Requires IM Agreement & Plan (Recorded w/register of Deeds) Annual IM forms required. Failure to submit annual forms or maintain BMPs forfeits credits

16 Mitigation Credits Available to all development types Earned in CF of SOV > Baseline Trade/Exchange registry Issued as credit coupons

17 Mitigation Credits Maximum credit based on WQv of 2.1 rainfall Example: 2.1 ceiling 0.80 baseline = 1.3 of credit potential Credits have no expiration date Credits may be used in any watershed Not limited to watershed where earned

18 Mitigation Credits Applied only to primary development site (new development or redevelopment) Not allowed for offsite mitigation Not applicable to retrofits Credits may be used to meet 50% of the site s required SOV without demonstrating hardship

19 Hardship Unable to meet SOV Must be technically infeasible to achieve Economic hardship or lack of space are not a basis for site infeasibility Acceptable reasons may include: <2 to limiting layer (bedrock, groundwater, etc.) Contaminated soils Karst features Flood & Water Quality control still required Peak Rate: 2-25-year event w/ 100-year safe conveyance (pre- to post-) 80% TSS: For portion of SOV not met

20 Mitigation Fee Fee-in-lieu Fee at $45/cf of unmet onsite SOV requirement Achieved SOV can be a combination of onsite BMPs & mitigation credits May be assessed on new development and redevelopment; retrofits exempted Requires City approval Paid into a public SW project fund

21 Offsite Mitigation Mitigation at 150% of unmet SOV Must be in the same watershed as the primary development City may identify priority areas Applicant responsible for land acquisition, design, construction, and long-term O&M Requires a surety bond in the amount of the total equivalent mitigation fee New development is not allowed to fulfill the offsite requirement

22 Chattanooga Categories of Land Development Tailored to development type and watershed A-New Development B- New Development Critical Watershed C- Redevelopment D- Retrofit

23 Credit and Incentives Framework Type Baseline SOV Water Quality Fee Discount (A,B,C) - % per 1% > Baseline (D) -1% per 0.01 > Baseline Mitigation Credits Maximum Earned (WQv = 2.1 ) Maximum Applied Mitigation Fees $45.00/cubic foot A % - 50% Baseline SOV less SOV achieved B % - 50% Baseline SOV less SOV achieved C % - 70% Baseline SOV less SOV achieved D % - 80% 2.0 NA NA

24 Market-Based Credit and Registry DEVELOPMENT YES SOV met? NO SOV exceeded Credit issued CF of SOV Mitigate offsite at 150% Use credit Pay fee at $45/cf Sell or use

25 Mitigation Fee Example Development A SOV Rainfall = 1.0 inches Impervious Area = 99,844 ft 2 Disturbed Area = 169,884 ft 2 SOV built = 3,327 ft 3 SOV required = 7327 ft 3 SOV Deficit = 4,000 ft 3 Mitigation Credit (applied) = 2,513 ft 3 Mitigation Fee = 1487 x $45 = $66,915 WQ Fee = $3571 ($115.20/ERU)

26 Collaboration-P3s-Public Engagement The Chattanooga Way

27 Targeted Opportunities for Redevelopment Project Area: 357 acres Total Impervious: 228 ac. (64%) Total Parking: 140 ac. (39%) % Parking: 61.2% Opportunity for a P3!

28 Public-Private Opportunity (P3) AIRPORT

29 Opportunistic Solutions More Than Water! Clear Zone needed Unoccupied auto dealership Localized flooding City compliance Issues Public safety concerns Funding Airport Authority: Land & construction ($4.3M) City: Professional design services ($380K) Lyndhurst Foundation ($10K) Volunteers (Priceless)

30 Keystone Revitalization Clean, Green & Safe Jay Hollingsworth Speas Airport Award for 2014 Improving environmental relationships between airports and community

31 Challenging the Community-Beyond Basics Before

32 Public Engagement- The Vision Thing

33 Keys to Success Recognize that the Green Infrastructure project or program is a component of urban revitalization... that the decision to go green is not a cost decision but a value proposition... that the Green Infrastructure decision is strategic and not tactical... that executive leadership is essential... that success requires collaboration and public engagement

34 Discussion

35 Thank You Pete Yakimowich PE (423)