Public Private Partnership Reduces Harmful Discharges. Presented to the Florida Stormwater Association December 2017

Transcription

1 Public Private Partnership Reduces Harmful Discharges Presented to the Florida Stormwater Association December 2017

2 Dispersed Water Management (DWM) Definition: Shallow water distributed across parcel landscapes using relatively simple structures Before After 2

3 Program Benefits Increased water storage Less water sent to Lake Okeechobee and estuaries Reduced nutrient loadings Increased groundwater recharge Improved habitat Higher soil moisture in dry season Rapid implementation 3

4 Why do Dispersed Water Management?

5 Primary Project Types Florida Ranchlands Environmental Services Project Pilot Northern Everglades - Payment for Environmental Services Regional - Private lands Public Lands Water Farming Northern Everglades Public Private Partnership 5 5 (NE PPP)

6 Water Farming Agricultural Cropland Assessment Project CONCEPT: Fallow citrus lands to store water, attenuate nutrients, utilize stormwater as an alternative water supply to reduce releases, and improve water quality to the St. Lucie Estuary Cooperative Agreement executed with Indian River Citrus League Feasibility evaluation of costs and benefits (2 Alternative Concepts Evaluated). Completed in March, 2012.

7 Water Farming Assessment Project Alternative #1 Retention on farm site Less than 2 feet in furrows Optimize existing farm infrastructure / limited capital investment Retain onsite rainfall / Capture wet season flows from basin Alternative #2 Storage on farm site Improvements to farm infrastructure / impound surface water 4 feet above average crown of bed elevation Capture wet season flows from basin No discharge in wet season Release irrigation water supply to basin in dry season if available

8 Alternatives Fallow Citrus Cross-section with proposed Surface Water Levels Alt. 1 Less than 2.0 Alt

9 Water Farming Pilot Projects (Implementation Phase) Enter into agreement with private grove owners Competitively develop market based approach to determine future payment for environmental services Pilot project sites will provide information and data for future program expansion (pending funding) Pilot program to last 24 months after construction (operational)

10 Water Farming St. Lucie River Basin Pilot Study Request for Proposals (April, 2013) Above-ground flooding of fallow grove Retention in existing facilities only High percolation sites Five Competitive Submittals Three selected pilot sites Pilot Study Funding $1.6M SFWMD Funds $1.5M FDEP 319 Grant 3-Year Agreements 10

11 Caulkins Water Farm Pilot Site 1 PROJECT SUMMARY 450 Acre Fallow Grove (Alt. 2) Construction of perimeter levee Water diverted via pump from C-44 Canal 413-acre impoundment 4 feet deep Deep sands with no confining layer Anticipated high percolation rate Proposed retention = 6,780 ac-feet/yr 11

12 Caulkins Water Farm Pilot Site 1 Construction complete 1/14 Operational Feb. 1, 2014 Estimated Annual Volume Pumped: 6,780 ac-ft Volume Pumped 2014: 11,840 ac-ft Volume Pumped 2015: 15,134 ac-ft Volume Pumped 2016 (thru Sept.): 12,740 ac-ft T-P 7.5 metric tons & T-N 49 metric tons Water Budget/Seepage Analysis Study Ongoing 12

13 Caulkins Water Farm Pilot Site 1 Benefit of a Public-Private Partnership Private sector can move forward at a greater rate of speed Given one year to construct pilot Completed in 16 weeks 13

14 Caulkins Water Farm Pilot Site 1 Pump Station #1, 2 from C-44, and Pump Station #2, into the 1 reservoir 14

15 Caulkins Water Farm Pilot Site 1 15

16 Caulkins Water Farm Pilot Site 1 August 2013 December 2013 March

17 Caulkins Well & Sampling Locations CAU -5 (S, M & D) CAU -4S CAU -1 (S, M, D & LD) CAU-2S - Groundwater Well Location (14) Shallow Well (S) 15 deep Medium Well (M) 30 deep Deep Well (D) 80 deep Lower Deep Well (LD) 130 deep - Perimeter Staff Gauge Location - Interior Staff Gauge Location CAU-3S CAU-6 (M & D) CAU -7 (M & D) 17

18 Sampling Frequency & Parameters Frequency Semi-Annual for 3 yrs. (wet & dry) Nutrient Parameters TPO4, OPO4, T-N, TKN, NO2 & NO3 Ionic & WQ Parameters Na, Ca, Mg, K, Cl, SO4, Alkalinity, Bicarbonate & TDS Field Parameters Temp, ph, Specific Conductivity & Turbidity CAU-1 Monitoring Well Cluster Located in the Center of Water Farm Surface & Well Water Levels recorded 15 min. breakpoint (monthly download) 18

19 Water Farming Pilot Site 1 Caulkins Citrus 19

20 Water Farming C-24 Canal Pilot Site 2 Evans Ideal 1000 Project Summary 970-ac. fallow grove (Alt. 1) Cell 2 Annual retention volume 3,635 acft Water staged to top of bed, and utilizing existing above-ground impoundment Cell 1 Operational May 2015 Volume Stored ac-ft T-P 1.2 metric tons & T-N 5.6 metric tons 20

21 Water Farming Pilot Site 2 Evans Ideal 1000 (cont.) 21

22 Water Farming Pilot Site 2 Evans Ideal 1000 (cont.) 22

23 Water Farming Pilot Site 3 Spur Land & Cattle Project Summary 60-ac. fallow grove (Alt. 2) Water stored 4 feet deep Annual retention volume 870 ac-ft Utilizing adjacent wetland/slough (130 ac.) for additional water quality treatment Operational January 2015 Volume Stored ac-ft T-P 0.33 metric tons & T-N 1.52 metric tons 23

24 Water Farming Pilot Site 3 Spur Land & Cattle (cont.) 24

25 Water Farming Pilot Site 3 Spur Land & Cattle (cont.) 25

26 Water Farming St. Lucie River Basin Pilot Study Operational Considerations All Farm s are not created equal Maximize operations to minimize coastal discharges Understand watershed conditions and potential seasonal discharges Coordinate closely with Operations Department 26

27 Wetlands creation and/or expansion baseline hydrologic condition State reversion protection in place Federal permit in process Wildlife habitat creation Partnership for Fish & Wildlife Cooperative Agreement Early fact finding stages Water Farming Potential Hurdles 27

28 Water Farming What s Next? Pilot Study Completion Data collection Storage capabilities Water quality Contract optimization Cost Structure Seasonal analysis NE PPP Legislative - $47.8M 6 Projects (BMAP) 10 year Contracts 28

29 Northern Everglades Public-Private Partnerships (NE PPP) Background January 2016: Florida Department of Environmental Protection (FDEP) solicited for large, regional-scale Basin Management Action Plan (BMAP) projects February 2016: FDEP identified 6 projects from 16 submittals March 2016: Florida Legislative Budget, General Appropriations Act, Chapter , Specific Appropriation 1590A April 2016: Leadership from FDEP, SFWMD and Florida Department of Agriculture and Consumer Services (FDACS) met to find a path forward to implementation June 2016: Interagency Working Group convened 29

30 Northern Everglades Public-Private Partnerships (NE PPP) Background 6 Selected NE PPP Projects Caulkins Water Farm C-44 Canal 3,275 acres Evans Bluefield C-23 Canal 6,603 acres Evans Scotts C-25 Canal 7,788 acres Latt Maxcy Kissimmee River 9,175 acres Lykes Brighton Valley Indian Prairie 8,200 acres Alico Caloosahatchee River 35,192 acres 30

31 Caulkins Water Farm Expansion Added 5 additional cells All interconnected with the pilot Ability to isolate each cell for maintenance Upgraded the existing pump station Three 35,000 gpm pumps Total pumping capability = 105,000 gpm 84 Intake Pipe $7.4M Construction Budget 31

32 Caulkins Water Farm Expansion Began February 2017 Complete October 2017 Currently waiting on power 32

33 Caulkins Water Farm Expansion Three 35,000 gpm pumps Total pumping capability = 105,000 gpm 33

34 Caulkins Public Outreach / Education Hosted: Chambers Art Students Local Organizations 34

35 Caulkins Water Farm Habitat Enhancement 35

36 Questions? Boyd Gunsalus Lead Environmental Scientist Dispersed Water Management Section South Florida Water Management District Melissa G. Corbett, P.E. The MilCor Group CIVIL ENGINEERS