WATER ISSUES 2017 MANATEE COUNTY UTILITIES DEPARTMENT REVIEW OF CURRENT WATER ISSUES

Transcription

1 WATER ISSUES 2017 MANATEE COUNTY UTILITIES DEPARTMENT REVIEW OF CURRENT WATER ISSUES Presented at BCC Morning Work Session January 17, 2017

2 TOPICS Water 101 Reboot Regional Water Supply Plan MFL (Minimum Flow and Level) PRMRWSA Strategic Plan Flatford Recharge Project

3 WATER 101 REBOOT MCUD WATER SYSTEM OPERATIONS AND PLANNING Service Area Current Facilities Demands Current and Future Future Potable Supply Plans System Operations / Regional Integration

4 MANATEE COUNTY UTILITIES DEPARTMENT SERVICE AREA Retail Service Area - 113,000 accounts Unincorporated Manatee County west of Lake Manatee Island cities of Bradenton Beach, Holmes Beach, and Anna Maria Wholesale Service Area Sole Supplier City of Palmetto, Town of Longboat Key Partial Supplier City of Bradenton, Sarasota County Total Population Served 325,000

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7 LAKE MANATEE WTP Surface Water 2 treatment trains 54 MGD capacity Conventional treatment coagulation, flocculation, granular media filtration Ground Water 30 MGD capacity H2S stripping, lime softening, recarbonation, granular media filtration Treated filter effluents combined, stabilized, disinfected (chloramines), flouridated

8 MANATEE COUNTY WATER SYSTEM PUMP & STORAGE FACILITIES 4 High Service Pump Stations 115 Total MGD, 15 pumps 5 Booster Pump Stations 92 MGD, 17 pumps Total Storage 34.7 MG 7 Ground Storage Tanks 26.5 MG 6 Elevated Storage Tanks 5.5 MG 3 WTP 2.7 MG 4 major transmission mains from WTP 42, (2) 36, miles > 16 1,145 miles water mains ,886 system valves, 7,145 hydrants

9 MANATEE COUNTY WATER SYSTEM INTERCONNECTS Those which can provide limited water to MC Sarasota County 3 on University Parkway (Seminole RR (10 ), Lockwood Ridge (30 ), Lakewood Ranch Blvd. (10 )) City of Bradenton 11 (across all of City) Town of Longboat Key 1 (Gulf Drive) Those with no other water source City of Palmetto 9 (across N. & E. part of City)

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11 MANATEE COUNTY WATER CONSERVATION Education/Outreach Bill inserts, website Festivals/events, schools Indoor Program 10,110 low flow toilet rebates Outdoor Program 1866 irrigation system evaluations 624 rain sensors 4209 rain barrels 86 shallow well rebates

12 GALLONS/CAPITA/DAY MANATEE COUNTY WATER CONSERVATION 200 Per Capita Water Use SWFWMD Compliance Level = 150 g/p/d Per Capita was reduced from 200 g/p/d in 1977 to 91 g/p/d in 2014

13 FUTURE LOCAL SOURCES FOR WATER SUPPLY (43-58 MGD) Increased conservation efforts(5 MGD) Western wells from GW credits(5 MGD) East County Well Field from GW credits (8 MGD) Manatee River Storage (10 MGD) Gilley Creek Reservoir North and East Fork Reservoir Dredging of Lake Manatee Local Sources for Regional Development Flatford Swamp Upper Myakka Basin (10 MGD) Desalination (5-20 MGD) 13

14 GENERAL STATUS Based on current population projections, supply will likely be good through 2034 Eventually new supplies will be needed and potential sources for development have been identified New supplies will have an increased cost Need for continued investment in infrastructure 14

15 FUTURE SUPPLY OPTIONS Stretch current supply Conservation Use of reclaimed water Use Ground Water Replacement Credits to increase supply East County Well Field New Brackish RO Facility North County (3-6 MGD) Permitted through groundwater credits earned by use of reclaimed water instead of groundwater Timing is key variable TBD in next two years Local Sources for Possible Regional Development 15

16 MANATEE COUNTY WATER SYSTEM OPERATION / REGIONAL INTEGRATION MC currently provides all of the water needed for MC customers (112,500 connections) MC currently provides up to 6 MGD to Sarasota County Scheduled to end by 2025 Most effective use of installed assets would continue contract at 4-5 MGD for foreseeable future Latest projections show need for 5 MG from the PRMRWSA in 2034

17 FUTURE Manatee County existing supply sufficient for next years Increase supply through transfer of groundwater credits Eventual supplies from/with the PRMRWSA Have to develop new supply What is best option using all in costs Have to figure out transmission cost component What is cost recovery mechanism for transmission lines from source to Manatee County 17

18 TOPICS Water 101 Reboot Regional Water Supply Plan MFL (Minimum Flow and Level) PRMRWSA Strategic Plan Flatford Recharge Project

19 Regional Water Supply Plan Developed by SWFWMD every 5 years Presents future water demands Identifies future water sources and entities Requires development of a 10-year Water Supply Facilities Work Plan Requires identified entities to respond with plan for development of supply

20 MC Water Supply Facilities Work Plan (WSFWP) Current version adopted by BCC Sept Water Distribution System Master Plan adopted 2013 Expect presentation of 2017 version to BCC by March 31 Needed steps: Staff review and edit BDS to initiate needed Comp Plan updates Presentation to Planning Commission

21 WSFWP Objective Ensure Necessary Water Supply Facilities are Planned to Serve Customers for 10-Year Planning Period Project County s Demands for 10-Year Period Identify Required Water Sources & Facilities Develop 10-Year Work Plan for needed Facilities Develop 5-Year Schedule of Capital Improvements 21

22 2012 WSFWP Supply sources, treatment and delivery facilities Based on demands from projected population, contractual agreements and Comp Plan policy Adoption of 10-year plan required each 5 years in conjunction with SWFWMD RWSP (Section (6)(c),F.S.) 22

23 2012 WSFWP Supply Sources Existing supply capacity generally sufficient to met projected 10-year demand Projected population much lower than in 2007 Projected demands have decreased each of the last 5 years Facility R&R and upgrades will require increased investment 23

24 2012 Current and Projected Demand Manatee County MGD Supply MGD Demand MGD Projected Demand MGD Projected Demand MGD Projected Demand 24

25 2012 System Description Current Supply Facilities Lake Manatee Reservoir 34.9 MGD East County Wellfield MGD Mosaic Wellfield 1.96 MGD Current total MGD Planned Additional Future Supply within 10-year planning period Buffalo Creek Wellfield 3.95 MGD SWFWMD permitted through Net Benefit process with reclaimed water offsets On-line by 2022, supply north of river, drought proof source, increased reliability, diversification 25

26 2012 General Status Based on current population projections, supply will likely be good through 2030 Eventually new supplies will be needed and potential sources for development have been identified New supplies will have an increased cost Need for increased investment in infrastructure 26

27 2012 Future Supply Options Stretch current supply Conservation Use of reclaimed water New Brackish RO Facility North County (3-6 MGD) Permitted through groundwater credits earned by use of reclaimed water instead of groundwater Local Sources for Possible Regional Development Desalination 5-20 MGD 27

28 2012 Future Supply Options (cont.) Possible Regional Sources for Other Local or Regional Development Dona Bay (5 20 MGD) Shell Creek (12-20 MGD) Desalination (40 55 MGD) Myakka River Basin (10 MGD) Little Manatee River Basin (5 10 MGD) Additional Development of Peace River (40 80 MGD) Babcock Ranch(10 20 MGD) 28

29 2017 RWSP RESPONSE Identified Future Sources in MC for MC or Regional Development Flatford/Upper Myakka - PRMRWSA Desalination/Pt. Manatee - PRMRWSA Brackish GW RO Buffalo Creek - MC Surficial Aquifer Irr. Wells - Homeowners Water Conservation MC Incentives (rebates) Reclaimed Water Interconnects Hillsborough Co. Hillsborough Co. Longboat Key Longboat Key 29

30 2017 WSFWP PREVIEW Current Sources Projected Demands Future Plans 30

31 2017 System Description (preview) Current Supply Facilities Lake Manatee Reservoir 34.9 MGD East County Wellfield MGD ( MGD) Mosaic Wellfield 1.96 MGD Current total MGD ( MGD) Planned Additional Future Supply beyond 10-year planning period Buffalo Creek Wellfield 3.0 MGD SWFWMD permitted through Net Benefit process with reclaimed water offsets 31

32 2017 Projected Demand (preview) Manatee County (55.946) MGD Supply (46.8) MGD Demand (47.5) MGD Projected Demand (49) MGD Projected Demand (53.6) MGD Projected Demand 32

33 2017 Future Plans (preview) Convert 3.1 MGD at East County Well Field from conjunctive use to increased total as demand increases permitting action Re-evaluate Buffalo Creek RO facility to determine best timing to bring on-line Work with SWFWMD on MFL strategies Work with Sarasota County on water supply contract to optimize value of infrastructure investments Continue coordination with PRMRWSA on best new supply options 33

34 TOPICS Water Issues WS 1/17/17 Water 101 Reboot Regional Water Supply Plan MFL (Minimum Flow and Level) PRMRWSA Strategic Plan Flatford Recharge Project

35 Minimum Flow and Level (MFL) Minimum Flows and Levels program enabling legislation (Title XXVII, Chapter and Chapter ) and Southwest Florida Water Management District rules (Chapter 40D-8) Requires SWFWMD to set a minimum flow on the Manatee River SWFWMD has set MFs on all major rivers in District except Manatee and Shell Creek Attempt to simulate natural flow regime

36 MFL Manatee River has been on Priority List for many years (more than 10) Pertains to both MC and COB reservoirs/water supply Previously proposed MFL in 2010 Reduced Lake Manatee safe yield from 34.9 to 17 MGD Governing Board directed staff to re-evaluate

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38 MFL Currently in discussion with SWFWMD New proposed MFL approach centers on protecting the permitted withdrawal at 95% reliability of Lake Manatee/Evers Reservoir, and taking the remaining water for the downstream river environment. Though to much lesser extent, still affects MC and COB water supplies/utilities

39 MFL Would require: Minimum daily release from Lake Manatee except in rainy season (Jun 24 Oct 20) Same for Evers Reservoir New release infrastructure required for COB Results in: Less water for public supply, lower reliability of source

40 MFL Reliability measure of ability of source to meet the permitted withdrawal quantity 95% Reliability: source can meet permitted withdrawal on average 95 of 100 days Would be unable to meet demand 18 days of one year, 91 days of a 5-year period, 182 days over a 10-year period

41 MFL Lake Manatee: 34.9 MGD permitted capacity No MFL 96.5% reliable With Proposed MFL 95% reliable Lose 5 days over a year; 27 days over 5-yr period; 55 days over 10-yr period

42 MFL Options: Fight challenge District on methodology and/or rule interpretation Could win, but questionable with District history of successful implementation of MFLs Likely significant legal costs Work cooperatively with District to minimize impact and garner financial support to add additional supply to regain lost reliability

43 TOPICS Water Issues WS 1/17/17 Water 101 Reboot Regional Water Supply Plan MFL (Minimum Flow and Level) PRMRWSA Strategic Plan Flatford Recharge Project

44 PEACE RIVER MANASOTA REGIONAL WATER SUPPLY AUTHORITY An independent special district created pursuant to Chapter 373 in 1982 by interlocal agreement between Charlotte, DeSoto, Hardee, Manatee and Sarasota Counties Hardee withdrew in 1983 New interlocal agreement in 1984 between remaining four counties Amended interlocal agreement in 1991 (acquisition of PRMRWSA facility)

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46 PRMRWSA STATUTORY PURPOSE & RESPONSIBILITY Develop, recover, store and supply water for county or municipal purposes Design, construct, operate and maintain facilities in locations and at the times necessary to ensure adequate water supply will be available to all citizens within the Authority

47 CONTROLLING RULES / DOCUMENTS Chapter 373, 163 Florida Statutes Chapter 40D, 62, FAC Second Amended Interlocal Agreement Simplified agreement by removal of obsolete provisions, and transfer of other provisions to the Master Water Supply Contract Master Water Supply Contract 2005 Regional Expansion Program Amended twice (Second Amendment -2015)

48 Peace River Facility

49 CURRENT FACILITIES/LOCATIONS Reservoirs 6.5 BG total storage Plant 51 MGD treatment capacity 34.9 MGD permitted production ASR 21 ASR Wells, 14.2 MGD Transmission Lines 65 miles of (6) 2MG GS tanks

50 PRMRWSA Transmission Mains

51 ALLOCATIONS FROM 34.9 MGD PRMRWSA FACILITY Sarasota County 15.1 MGD Charlotte County 16.1 MGD City of North Port 2.8 MGD DeSoto County 0.7 MGD Manatee County 0.0 MGD

52 FINANCIAL MODEL Costs based on allocations/facilities/use Debt based on allocation 3 different facility debt costs (1991, PRO, REP) Various Pipeline debt costs who it serves All pay same volumetric rate, but fixed charge is different based on allocation and debt Volumetric rate is based only on power and chemicals, other costs are assigned to fixed (base) rates

53 IDENTIFIED FUTURE SUPPLIES

54 PRMRWSA Strategic Plan Previous Plan formulated in 2007/2008 Adopted under different conditions Due for re-evaluation and edit if needed New plan developed by PRMRWSA and Member staff and Administrators 2013/14 Adopted by PRMRWSA Board of Directors October 2014

55 Strategic Plan Implementation November 2015 Administrators determined a need to put meat on the bones of adopted plan to aid in implementation Formed Core Groups to develop Goals, Objectives and Initiatives Presented to Board of Directors 12/7/2016

56 Strategic Plan Implementation Plan consists of 6 Core Values put into 4 Core Value Groups for the Implementation process: Core Value Regionalization Diversification Financial Stability Cooperation Collaboration Water Advocacy Core Value Group Regionalization and Diversification Financial Stability Cooperation and Collaboration Water Advocacy

57 Examples: Regionalization & Diversification Goal: The long-term aim of the Authority is to forge a system that is environmentally sensitive and sustainable, highly interconnected, diversified and affordable. Goal: The Authority will work with its members and water providers in the region to further diversify supplies, integrate additional water supplies into the Authority s Regional System, and protect and enhance water dependent natural resources.

58 Examples: Regionalization & Diversification Objective 1-3. Interconnect all major supply facilities to the Regional Transmission system Initiative 1. Establish process for when new water supply is developed, how new supply projects ae selected, and provide range of options for regional participation in Initiative 2. Interconnect all existing major supply facilities to the Regional Transmission System by Initiative 3. Interconnect all new major supply facilities to the Regional System as they are developed.

59 Strategic Plan Implementation PRMRWSA staff to present to PRMRWSA Board February 2 nd for approval of final draft PRMRWSA staff then plans to bring to each of the member Boards for consideration in Feb. or early March Then to bring to PRMRWSA Board for consideration of final plan at April meeting

60 TOPICS Water Issues WS 1/17/17 Water 101 Reboot Regional Water Supply Plan MFL (Minimum Flow and Level) PRMRWSA Strategic Plan Flatford Recharge Project

61 Flatford Recharge Project Flatford Swamp Preserve located on Myakka River, upstream (north) of Myakka City Hardwood tree die-off in area years ago SWFWMD determined die-off due to excess water in swamp during dry periods that essentially caused trees to drown

62 Flatford Swamp preserve area 62

63 Flatford Recharge Project SWFWMD has been trying to get an environmental restoration project in place for years Challenge is what to do with the excess water excess water is due to land use changes (agriculture and development) which causes more runoff

64 Flatford Recharge Project Several Options for excess water evaluated: Drinking water source either MC or PRMRWSA Reuse by agricultural community Use by MOSAIC in mining operations to replace groundwater withdrawals None feasible/cost effective due to distance from proposed uses, water quality challenges and/or timing of need

65 Flatford Recharge Project Current proposal is for SWFWMD to construct a test injection well to recharge the aquifer below the Preserve property Will inject into the Avon Park zone of the Upper Floridan Aquifer Zone that provides water for local agricultural irrigation and East County Wells in Duette Preserve No treatment of water is planned prior to injection

66 Flatford Recharge Project Proposed benefits: Restore hydro-period to former regime Recharge UFA in SWUCA Review of 10-year impact of SWUCA Recovery Strategy shows withdrawals reduced per plan, but aquifer level did not recover as expected Indicates need for 10 MGD of reduced withdrawal or recharge to meet goal Provide information to show if concept is feasible for implementation at other locations in region

67 Flatford Recharge Project Potential issues: Water quality differences between excess water to be injected and water quality in Avon Park zone contaminants in injected water water chemistry changes/reactions with geology If test goes awry, is there a recovery strategy for the aquifer?

68 Flatford Recharge Project If District proceeds with test project, they should err on side of caution and test for as many potential water quality concerns, in injected water, monitoring wells and recovered water as possible i.e., Drinking Water Primary and Secondary Contaminants, Other Unregulated Contaminants (SOCs), those from the Unregulated Contaminant Monitoring Rule 1, 2, 3 and 4 Other specific concerns from other sectors (agriculuture, environmental, etc.)

69 Flatford Recharge Project Public Meeting Jan. 9, 2017 at SWFWMD Sarasota Office Presentations to other groups include: SWFWMD Agriculture and Green Committee 12/1 SWFWMD Environmental Advisory Committee 1/10 Manatee Chamber Natural Resources Committee 1/20 SWFWMD Governing Board 1/24