South Watershed Management Area Executive Committee

Transcription

1 South Watershed Management Area Executive Committee May 12, 2016

2 Item 1: Self Introductions Item 2: Public Comments, Non-Agenda Topics

3 Item 3: Approval of Minutes for February 2, 2016 Recommended Action: Approve the minutes of the February 2, 2016 meeting.

4 Item 4 San Juan Basin Optimization Program Presenter: Dan Ferons, Santa Margarita Water District

5 Recommended Action: Receive and file

6 Item Proposition 84 Drought Grant Recycled Water Project Update Presenter: Rick Shintaku, South Coast Water District

7 Recommended Action: Receive and file

8 Item 6 Management Committee Update: IRWM Plan & Objectives

9 Executive Committee Direction Incorporate regional priorities into IRWM Plan: Develop sustainable water supplies Cultivate storage for potable and recycled water and stormwater or low flow capture Foster regional projects to maximize water resources Merge Goals for water supply and efficiency Develop recommendations for objectives and goal weighting revisions for the IRWM Plan

10 Management Committee Actions Management Committee Ad Hoc reviewed elements of IRWM Plan update, objectives and goal weighting The Management Committee recommends: Align Plan updates with State guidance/standards Align Plan update with State grant and local planning schedules Determine overall Plan update needs first, then review objectives, metrics and weighting

11 Plan Update Timeline Considerations Consultant support approved 4/12 (Re-allocation of $60,000 in FY Budget for Plan update approved at 2/4 meeting) State release of final guidance expected May 2016, revised draft Prop 1 Grant guidance Spring 2017 and Grant release in Summer 2017 Local planning elements in : Urban Water Management Plan, San Juan Basin Optimization, Water Quality Improvement Plan, Stormwater Resource Plan, OC Water Reliability Study

12 Align Requirements and Timelines for Local & State Planning Efforts; Revise Goals per Executive Committee direction Goal: Update Plan for 5-year Time Horizon Incorporate State Requirements, Review Objectives & Make Necessary Basic Text Edits; Update Executive Committee Goal: Establish Baseline Updated Plan Finalize Objectives and Goal Weighting after State Releases Guidance in 2017; Executive Committee Review & Approve Recommended Changes/Draft Plan Goal: Final Plan meets Prop 1 Planning Standards & PSP for Grants Proposed Plan Update Process

13 Recommended Action: Provide direction to Management Committee

14 Item 7: Executive Officer s Report

15 Item 8: Executive Committee Member Comments Item 9: Adjournment Next meeting date: August 4 th

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17 San Juan Basin Optimization May 12, 2016

18 SOCWMA Partnering Watershed project that crosses boundaries and jurisdictions County and City co-permittees Water purveyors Regulatory agencies Water supply meets storm and urban runoff Groundwater recharge Water Quality Impact Plans Joint treatment facilities Large scale project

19 SJBA Background San Juan Basin Authority formed in 1971 to jointly fund facilities to make water available to member agencies SJBA is currently comprised of City of San Juan Capistrano South Coast Water District Moulton Niguel Water District Santa Margarita Water District

20 SAN JUAN BASIN LOCATION MAP San Juan Basin Watershed Boundary Approx. 175 Sq. Mi.

21 SAN JUAN BASIN LOCATION MAP Primary Areas of Interest for Basin Water Production and Recharge

22 Findings of Previous Studies Various studies since early 1970 s have identified options for development of local groundwater sources and the potential for artificial recharge. Supplemental studies in identified updated water supply demand issues including: Increased pumping demands by various agencies Long term periods of drought Dropping groundwater levels Protection of basin waters from seawater intrusion Considerations for basin recharge with stormwater/recycled water Consideration of brackish water / seawater production 2014 Groundwater Management Plan

23 Annual Precipitation Trends Plant Choices and Rainfall in OC * Data from CIMIS station #75, Irvine, CA Average Annual Rainfall: 13 Without wet years, 8 Average: What we need to plan for Inches Drought? 0 Lawn LWU Plants Rainfall

24 WE STARTED WITH QUESTIONS ABOUT BASIN WATER SUPPLIES How Much? Can We Use It All? Is There More? SJBA Preliminary Adaptive Production Management Alternatives

25 WE MOVED TO A CONCEPT Current basin production capacity approx. 8,000-10,000 AFY Potential to increases the long-term reliable basin production up to approx. 24,000 AFY SJBA Preliminary Adaptive Production Management Alternatives

26 WE DEVELOPED A PLAN SJBGFMP Developed for San Juan Basin Authority started in 2010 adopted in December 2014 SJBA Preliminary Adaptive Production Management Alternatives

27 WE SET ADAPTIVE MANAGEMENT GOALS The common goals included: 1) Enhanced Basin Water Supplies 2) Protect and Enhance Water Quality 3) Maximize Unused Basin Storage Space 4) Satisfy State Requirements for a Groundwater Management Program 5) Establish Equitable Share of Funding, Benefits, and Cost for Basin Management. SJBA Preliminary Adaptive Production Management Alternatives

28 WE CONTINUED WITH A FEASIBILITY STUDY Stormwater Capture and Recharge Recycled Water Recharge Adaptive Production Seawater Intrusion Control T-Levees Rubber Dams Near-Stream Recharge - Infiltration Basins In-Stream Live Recharge - Rubber Dam Capture Groundwater Injection Relocate Groundwater Wells Ranney-Type Wells Extraction Barrier Wells SJBA Preliminary Adaptive Production Management Alternatives TASK 2 SCREENING ANALYSIS

29 DEVELOPED FINAL CONCEPT STRATEGIES Surface Water Recharge Strategies SWR-1 SWR-2 SWR-3 SWR-4 Description Avg. Annual New Project Yield (afy) Storm water via Rubber Dams on San Juan Creek Storm water and Recycled Water via Rubber Dams on San Juan Creek Recycled Water via Incidental Recharge on San Juan Creek Storm water and Recycled Water via Rubber Dams and Incidental Recharge 1,980 4,380 2,660 8,220 DEVELOPING A PHASED APPROACH FOR IMPLEMENTATION SJBA Preliminary Adaptive Production Management Alternatives

30 PHASING STRATEGY Environmental Documentation Regulatory Agency Coordination Initiate Public Outreach SWR-1 (1,100 to 1,980 afy New Yield) Stormwater Capture via Rubber Dams on San Juan Creek SWR-3 (2,660 afy New Yield) Recycled Water via Incidental Recharge on San Juan Creek SJBA Preliminary Adaptive Production Management Alternatives

31 PHASING STRATEGY Environmental Documentation Regulatory Agency Coordination Initiate Public Outreach SWR-1 (1,100 to 1,980 afy New Yield) Stormwater Capture via Rubber Dams on San Juan Creek SWR-2 (4,380 afy New Yield) Stormwater Capture and Recycled Water via Rubber Dams on San Juan Creek SWR-3 (2,660 afy New Yield) Recycled Water via Incidental Recharge on San Juan Creek SJBA Preliminary Adaptive Production Management Alternatives

32 PHASING STRATEGY Environmental Documentation Regulatory Agency Coordination Initiate Public Outreach SWR-1 (1,100 to 1,980 afy New Yield) Stormwater Capture via Rubber Dams on San Juan Creek SWR-2 (4,380 afy New Yield) Stormwater Capture and Recycled Water via Rubber Dams on San Juan Creek SWR-3 (2,660 afy New Yield) Recycled Water via Incidental Recharge on San Juan Creek SWR-4 (8,220 afy New Yield) Stormwater Capture and Recycled Water via Rubber Dams + Incidental Recharge on San Juan Creek SJBA Preliminary Adaptive Production Management Alternatives

33 PHASING STRATEGY Environmental Documentation Regulatory Agency Coordination Initiate Public Outreach SWR-1 (1,100 to 1,980 afy New Yield) Stormwater Capture via Rubber Dams on San Juan Creek SWR-2 (4,380 afy New Yield) Stormwater Capture and Recycled Water via Rubber Dams on San Juan Creek SWR-3 (2,660 afy New Yield) Recycled Water via Incidental Recharge on San Juan Creek SJBA Preliminary Adaptive Production Management Alternatives SWR-4 (8,220 afy New Yield) Stormwater Capture and Recycled Water via Rubber Dams + Incidental Recharge on San Juan Creek TASK 4 PHASING PLAN

34 Watershed Partners Started with a water project Expanded to a watershed project Working with County and MS-4 copermittees Working with Regional Board Working with Fish and Wildlife Working with environmental community Working with Flood Control

35 CONCEPTUAL STRATEGY: Rubber Dams (SJC and AT) + Incidental Recharge Rubber Dams in San Juan Creek and Arroyo Trabuco Incidental Recharge Seasonal Storage at Trampas GWR F Seawater WRF Recovery Wellfield Tertiary Treatment at JBL 19

36 NEXT STEPS

37 Phase I Implementation Develop CEQA document Develop partnership agreements and define benefits Commence project preliminary design and permitting Apply for funding (Prop 1) Construction of Phase I prior January 2018

38 Recycled Water Extension to Dana Point Harbor South Orange County Watershed Management Area Executive Committee May 12, 2016 Presented by South Coast Water District Rick Shintaku, Chief Engineer

39 South Coast Water District Service Area 8.3 square miles 12,553 Service connections Includes: South Laguna Beach Dana Point Portions of: San Juan Capistrano San Clemente SCWD also operates the Joint Regional Water Supply System (JRWSS)

40 SCWD s Sustainability Objectives Maximize Recycled Water Use Existing 850 AFY Planned Increase to 1,350 AFY by Year 2025 Maximize Water Conservation Level 2 Water Supply Warning SCWD is achieving 26% water conservation Minimize Water System Losses and Customer Leaks All SCWD customers are metered using Automated Meter Reading (AMR) technology Leaks are tracked and customers are notified

41 SCWD s Water Use Breakdown WATER CONSERVATION 26% NOW WATER LOSSES 2% RESIDENTIAL 41% RECYCLED WATER 9% DEDICATED POTABLE IRRIGATION 10% COMMERCIAL 12% WATER LOSSES 2% RECYCLED WATER 14% WATER CONSERVATION 20% YEAR 2040 RESIDENTIAL 45% COMMERCIAL 14% DEDICATED POTABLE IRRIGATION 5%

42 SCWD s Long-term Supply Portfolio YEAR 2040 NORMAL HYDROLOGY RECYCLED WATER 18% GRF 13% MWD 69% YEAR 2040 DRY HYDROLOGY GRF 0% RECYCLED WATER 18% MWD 82%

43 Recycled Water Extension Project Resulting Benefit is the Conversion of 50 million gallons per year (or 150 AFY) of Potable Irrigation to Recycled Water Equivalent to the Water Use of over 350 Single Family homes Scope of Work 7,300 feet of New Recycled Water Main 17 Recycled Water Services 1 Pressure Reducing Station at Golden Lantern / Del Prado 1 Recycled Water Filling Station Project Start: May 2015 Project Completion: Oct 2015

44 Recycled Water Extension Project

45 Recycled Water End Users

46 Recycled Water Pipe Installation

47 Project Costs Item Cost Design $185,000 Construction $1,621,000 SUB-TOTAL (Prior to Grant) $1,806,000 Prop 84 Grant Amount $500,000 TOTAL PROJECT COST $1,306,000