Bear Valley Water Sustainability Study Final
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Bear Valley Water Sustainability Study • December 2016• Recycled Water Facilities Planning Study for the Bear Valley Water Sustainability Project Prepared for Big Bear Area Regional Wastewater Agency Big Bear City Community Services District Big Bear Lake Department of Water and Power Big Bear Municipal Water District Prepared Under the Responsible Charge of: Laine Carlson 12/21/2016 Bear Valley Water Sustainability Project Acknowledgements Recycled Water Facilities Planning Study 12/21/2016 ACKNOWLEDGEMENTS The project team for this Recycled Water Facilities Planning Study (Study) for the Bear Valley Water Sustainability Project would like to acknowledge the valuable input and guidance received from the Board of Directors of the Big Bear Area Regional Wastewater Agency: David Caretto, Chairman representing the City of Big Bear Lake John Green, Vice Chairman representing Big Bear Area Community Services District Elizabeth Harris, Secretary representing San Bernardino County Service Area 53B Richard Herrick, Jr., Director representing City of Big Bear Lake Paul Terry, Director representing Big Bear Area Community Services District The Study was funded in part by a Water Recycling Facilities Planning Grant from the California State Water Resources Control Board Water Recycling Funding Program. The Study for the Bear Valley Water Sustainability Project was prepared by Water Systems Consulting, Inc. The primary authors are: Laine Carlson, P.E. Joshua Reynolds, M.S., P.E. Kaylie Ashton, E.I.T. Matt Rodrigues, M.S., P.E. Emily Iskin, M.S., E.I.T. Water Systems Consulting, Inc. would like to acknowledge the significant contributions of the Project Team. Steve Schindler Fred Uhler Scott Heule, C.H.G. Jennifer McCullar Jerry Griffith Jimmy Lona (Consultant) Reggie Lamson, P.E., L.S. Steve Wilson Mike Stephenson Jason Hall Sierra Orr i Bear Valley Water Sustainability Project Table of Contents Recycled Water Facilities Planning Study 12/21/2016 TABLE OF CONTENTS Acknowledgements ........................................................................................................................................ i Table of Contents .......................................................................................................................................... ii List of Tables ................................................................................................................................................ vi List of Figures .............................................................................................................................................. vii List of Acronyms and Abbreviations .......................................................................................................... viii Executive Summary ....................................................................................................................................... 1 Introduction .............................................................................................................................................. 1 Goals and Objectives ................................................................................................................................. 1 Alternatives Analysis ................................................................................................................................. 1 Recommended Alternatives ..................................................................................................................... 2 Funding and Financing .............................................................................................................................. 3 Conclusions ............................................................................................................................................... 3 1 Introduction ....................................................................................................................................... 1‐1 Background and Purpose ........................................................................................................... 1‐1 Project Team .............................................................................................................................. 1‐1 BBARWA ......................................................................................................................... 1‐1 BBCCSD ........................................................................................................................... 1‐2 BBLDWP ......................................................................................................................... 1‐2 BBMWD .......................................................................................................................... 1‐2 Goals and Objectives of Bear Valley Water Sustainability Project ............................................ 1‐3 Study Area Characteristics ......................................................................................................... 1‐4 Location .......................................................................................................................... 1‐4 Population ...................................................................................................................... 1‐4 Environmental Resources .............................................................................................. 1‐4 Climate ........................................................................................................................... 1‐8 2 Water Supplies and Characteristics ................................................................................................... 2‐1 Big Bear Valley Groundwater Management Zone ..................................................................... 2‐1 Water Demand and Use Trends ................................................................................................. 2‐3 Water Quality ............................................................................................................................. 2‐4 Water Pricing ............................................................................................................................. 2‐4 ii Bear Valley Water Sustainability Project Table of Contents Recycled Water Facilities Planning Study 12/21/2016 3 Wastewater Characteristics and Facilities ......................................................................................... 3‐1 Existing and Projected Wastewater Flows ................................................................................. 3‐1 Existing Facilities and Discharge Requirements ......................................................................... 3‐3 Existing Discharge Requirements ................................................................................... 3‐5 BBARWA Operating Budget ........................................................................................... 3‐8 Current Rate Schedule ................................................................................................... 3‐8 Capital Improvement Plan ............................................................................................. 3‐9 Treatment Requirements ........................................................................................................... 3‐9 Recycled Water Treatment Level for Groundwater Recharge ..................................... 3‐10 4 Recycled Water Market and Opportunities ....................................................................................... 4‐1 Prior Market Analysis ................................................................................................................. 4‐1 Market Analysis Update ............................................................................................................. 4‐1 5 Project Alternatives Analysis .............................................................................................................. 5‐1 Alternatives Evaluated ............................................................................................................... 5‐1 Alternative 1: Disinfected Tertiary Landscape Irrigation ............................................... 5‐1 Alternative 2: Groundwater Recharge at Greenspot ..................................................... 5‐7 Alternative 3: Groundwater Recharge at Sand Canyon ............................................... 5‐14 Alternative 4: Groundwater Recharge at Greenspot & Sand Canyon ......................... 5‐20 Non‐Recycled Water Alternative ............................................................................................. 5‐27 No Project Alternative .............................................................................................................. 5‐27 Water Conservation/Reduction Analysis ................................................................................. 5‐28 Alternatives Analysis ................................................................................................................ 5‐31 Qualitative Evaluation Criteria ..................................................................................... 5‐31 Quantitative Analysis Summary ................................................................................... 5‐31 Alternative Ranking Criteria and Scoring Results ......................................................... 5‐32 Preferred Alternatives 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