PINAL ACTIVE MANAGEMENT AREA FOURTH MANAGEMENT PLAN December 14, 2020 Fourth Management Plan Pinal Active Management Area ACKNOWLEDGEMENTS Arizona Department of Water Resources Staff Thomas Buschatzke, Director Amanda Long- Kyle Miller Rodriguez Lori Cason Brian Conway Lisa Williams Caitlin Parker Maggie Martin Caleb Schrank Makenna Welsch Carol Ward Melissa Sikes Clint Chandler Natalie Mast David McKay Nolan Power Dianne Yunker Pam Muse Einav Henenson Ryan Jackisch Hugo Perea Saba Asefa Jeff Inwood Sharon Scantlebury Jeff Tannler Shauna Evans John Riggins Tracey Carpenter Kelly Brown Vineetha Kartha Ken Slowinski Significant Contributions Groundwater Users Advisory Council Members David Snider William Collings Jackie Guthrie Oliver Anderson Scott Riggins Arizona Department of Environmental Quality Wayne Harrison Arizona Water Banking Authority Virginia O’Connell 1110 W. Washington Street, Suite 310 Phoenix, AZ 85007 TABLE OF CONTENTS CHAPTER 1: INTRODUCTION 1-1 SECTION 1.1: INTRODUCTION 1-1 SECTION 1.2: THE ASSURED WATER SUPPLY PROGRAM (AWS) 1-2 SECTION 1.3: THE UNDERGROUND WATER STORAGE, SAVINGS AND REPLENISHMENT (RECHARGE) PROGRAM 1-3 SECTION 1.4: GOVERNMENTAL AND INSTITUTIONAL SETTING 1-4 SECTION 1.5: PINAL AMA WATER MANAGEMENT CHALLENGES 1-4 SECTION 1.6: PINAL AMA 4MP PROGRAMS 1-6 SECTION 1.7: CONCLUSION 1-6 BIBLIOGRAPHY 1-7 CHAPTER 2: HYDROLOGY 2-1 SECTION 2.1: GEOGRAPHY 2-1 SECTION 2.2: CLIMATE 2-1 SECTION 2.3: SURFACE WATER RESOURCES 2-3 SECTION 2.4: HYDROLOGIC UNITS AND AQUIFER CHARACTERISTICS 2-5 2.4.1 : UPPER ALLUVIAL UNIT (UAU) 2-8 2.4.2 : MIDDLE SILT AND CLAY UNIT (MSCU) 2-8 2.4.3 : LOWER CONGLOMORATE UNIT (LCU) 2-8 2.4.4 : AQUIFER CHARACTERISTICS 2-8 SECTION 2.5: GROUNDWATER RESOURCES 2-10 2.5.1 : HISTORICAL WATER USE 2-10 2.5.2 : MARICOPA-STANFIELD SUB-BASIN 2-11 2.5.3 : ELOY SUB-BASIN 2-11 2.5.4 : GROUNDWATER RECHARGE AND DISCHARGE 2-12 2.5.4.1 : RECHARGE 2-12 SECTION 2.6: GROUNDWATER CONDITIONS 2-15 2.6.1 : WATER LEVEL TRENDS, 1900-2013 2-15 2.6.2 : ESTIMATED GROUNDWATER-IN-STORAGE AND CHANGE-IN-STORAGE SECTION 2.7: LAND SUBSIDENCE 2-17 SECTION 2.8: AVAILABILITY AND UTILIZATION OF RENEWABLE SUPPLIES 2-27 2.8.1: EFFLUENT 2-27 2.8.2: CAP WATER 2-27 2.8.3: IN-STATE SURFACE WATER 2-27 BIBLIOGRAPHY 2-28 CHAPTER 3: WATER DEMAND & SUPPLY 3-1 SECTION 3.1: INTRODUCTION 3-1 SECTION 3.2: OVERVIEW OF DEMAND AND SUPPLY BY WATER USE SECTOR 3-5 3.2.1 : MUNICIPAL SECTOR 3-5 3.2.2 : EXEMPT WELLS 3-6 i 3.2.3 : ESTIMATED PAMA POPULATION AND THE 2010 CENSUS 3-7 3.2.4 : LARGE UNTREATED PROVIDERS 3-8 3.2.5: INDUSTRIAL SECTOR 3-9 3.2.6: AGRICULTURAL SECTOR 3-11 3.2.7: TRIBAL SECTOR 3-14 SECTION 3.3: CURRENT WATER BUDGET 3-15 SECTION 3.4: CONCLUSION 3-17 BIBLIOGRAPHY 3-18 CHAPTER 4: AGRICULTURAL 4-1 SECTION 4.1: INTRODUCTION 4-1 4.1.1: WHAT IS AN AGRICULTURAL WATER USER 4-1 4.1.2: AGRICULTURAL CONSERVATION PROGRAMS- HISTORY AND BACKGROUND 4-1 SECTION 4.2: AGRICULTURAL SECTOR CHARACTERISTICS AND ROLES IN PAMA WATER MANAGEMENT GOAL ACHIEVEMENT 4-1 4.2.1: PAMA AGRICULTRAL SECTOR DESRIPTION 4-1 4.2.2: HARVESTING PROFILE 4-6 SECTION 4.3: AGRICULTURAL CONSERVATION PROGRAM DESCRIPTION 4-6 4.3.1: BASE PROGRAM 4-7 4.3.2: HISTORIC CROPPING PROGRAM 4-8 4.3.3: BEST MANAGEMENT PRACTICES (BMP) PROGRAM 4-8 4.3.3.1: BMP TECHNICAL STANDARDS ASSISTANCE 4-11 SECTION 4.4: IRRIGATION DISTRIBUTION SYSTEM REQUIREMENTS 4-11 SECTION 4.5: INCENTIVES FOR THE USE OF RENEWABLE SUPPLIES AND REDEMIAL GROUNDWATER 4-12 SECTION 4.6: NON-REGULATORY EFFORTS 4-13 SECTION 4.7: AGRICULTURAL CONSERVATION PROGRAM CALCULATIONS AND FORMULA COMPONENTS 4-13 4.7.1: IRRIGATION WATER DUTIES AND MAXIMUM ANNUAL GROUNDWATER ALLOTMENTS 4-13 4.7.1.2: CALCULATION OF MAXIMUM ANNUAL GROUNDWATER ALLOTMENTS 4-13 4.7.1.3: CALCULATION OF IRRIGATION WATER DUTIES 4-13 SECTION 4.8: AGRICULTURAL CONSERVATION MONITORING AND REPORTING REQUIREMENTS 4-16 4-801. DEFINITIONS 4-16 4-802. BASE AGRICULTURAL CONSERVATION PROGRAM REQUIREMENTS 4-17 4-803. HISTORIC CROPPING PROGRAM 4-18 4-804. BEST MANAGEMENT PRACTICES PROGRAM 4-21 4-805. CONSERVATION REQUIREMENTS FOR IRRIGATION DISTRIBUTION SYSTEMS 4-26 4-806. MONITORING AND REPORTING REQUIREMENTS FOR IRRIGATION DISTRICTS AND PRIVATE WATER COMPANIES 4-27 4-807. REMEDIAL GROUNDWATER ACCOUNTING FOR CONSERVATION REQUIREMENTS 4-27 4-804. AUDITS OF CONSERVATION REQUIREMENTS 4-29 APPENDIX 4-27 APPENDIX 4A: CONSUMPTIVE USE AND OTHER NEEDS REQUIREMENTS BY CROPS 4-30 APPENDIX 4B: BEST MANAGEMENT PRACTICES PROGRAM 4-33 BIBLIOGRAPHY 4-38 ii CHAPTER 5: MUNICIPAL 5-1 SECTION 5.1: INTRODUCTION 5-1 5.1.1: WHAT IS A MUNICIPAL WATER PROVIDER? 5-1 5.1.2: MUNICIPAL CONSERVATION PROGRAMS – HISTORY AND BACKGROUND 5-2 SECTION 5.2: MUNICICIPAL SECTOR CHARACTERISTICS AND ROLES IN PAMA WATER MANAGEMENT GOAL ACHEIVEMENT 5-3 5.2.1: PAMA MUNICIPAL SECTOR DESCRIPTION 5-3 5.2.2: MUNICIPAL WATER USE PROFILE 5-3 5.2.3: ROLE OF THE ASSURED WATER SUPPLY PROGRAM IN THE MUNICIPAL CONSERVATION PROGRAM 5-5 SECTION 5.3: MUNICIPAL CONSERVATION PROGRAM DESCRIPTION 5-7 5.3.1: NON-PER CAPITA CONSERVATION PROGRAM 5-7 5.3.1.1: INTRODUCTION 5-7 5.3.1.2: REGULATED PARTIES 5-7 5.3.1.3: GENERAL REQUIREMENTS 5-8 5.3.1.4: PROVIDER PROFILE 5-8 5.3.1.5: BASIC EDUCATION PROGRAM 5-9 5.3.1.6: BEST MANAGEMENT PRACTICES (BMP) 5-10 5.3.1.7: CONSERVATION EFFORTS REPORT 5-10 5.3.1.8: WATER RATE STRUCTURE 5-11 5.3.1.9: RECORDS RETENTION 5-11 5.3.1.10: INDIVIDUAL USER REQUIREMENTS, DISTRIBUTION SYSTEM REQUIREMENTS AND MONITORING AND REPORTING REQUIREMENTS 5-11 5.3.1.11: REVIEW OF NPCCP 5-10 5.3.2: TOTAL GALLONS PER CAPITA PER DAY CONSEVATION PROGRAM 5-11 5.3.2.1: TOTAL GPCD PROGRAM DESCRIPTION 5-12 5.3.2.2: TOTAL GPCD PROGRAM DEVELOPMENT 5-12 5.3.3: LOST AND UNACCOUNTED FOR WATER 5-13 5.3.4: CONSERVATION REQUIREMENTS FOR NEW LARGE MUNICIPAL PROVIDERS 5-13 5.3.5: CONSERVATION REQUIREMENTS FOR CONSOLIDATED MUNICIPAL PROVIDERS THAT ACQUIRE OR CONVEY A PORTION OF A SERVICE AREA 5-14 5.3.6: CONSERVATION REQUIREMENTS FOR LARGE UNTREATED WATER PROVIDERS 5-14 5.3.7: CONSERVATION REQUIREMENTS FOR SMALL MUNICIPAL PROVIDERS 5-14 5.3.8: REGULATORY REQUIREMENTS FOR ALL MUNICIPAL PROVIDERS 5-15 5.3.8.1: INDIVIDUAL USER REQUIREMENTS 5-15 5.3.8.2: DISTRIBUTION SYSTEM REQUIREMENTS 5-15 5.3.8.3: MONITORING AND REPORTING REQUIREMENTS 5-16 SECTION 5.4: INCENTIVES FOR THE USE OF RENEWABLE SUPPLIES AND REMEDIATED GROUNDWATER 5-16 SECTION 5.5: NON-REGULATORY EFFORTS 5-17 SECTION 5.6: MUNICIPAL CONSERVATION, MONITORING, AND REPORTING REQUIREMENTS 5-18 5-601. DEFINITIONS 5-18 5-602. LARGE MUNICIPAL PROVIDERS - CONSERVATION PROGRAMS 5-22 5-603. LARGE MUNICIPAL PROVIDERS TOTAL GALLONS PER CAPITA PER DAY PROGRAM 5-23 iii 5-604. COMPLIANCE WITH TOTAL GALLONS PER CAPITA PER DAY REQUIREMENT – FLEXABILITY ACCOUNT 5-24 5-605. NON – PER CAPITA CONSERVATION PROGRAM 5-25 5-606. CONSOLIDATION OF MUNICIPAL PROVIDER SERVICE AREAS; ACQUISITION OF A PORTION OF ANOTHER MUNICIPAL PROVIDER’S SERVICE AREA 5-30 5-607. CONSERVATION REQUIREMENTS FOR NEW LARGE MUNICIPAL PROVIDERS 5-33 5-608. CONSERVATION REQUIREMENTS FOR LARGE UNTREATED WATER PROVIDERS 5-34 5-609. CONSERVATION REQUIREMENTS FOR SMALL MUNICIPAL PROVIDERS 5-34 5-610. INDIVIDUAL USER REQUIREMENTS FOR MUNICIPAL PROVIDERS AND INDIVIDUAL USERS 5-35 5-611. CONSERVATION REQUIREMENTS FOR MUNICIPAL DISTRIBUTION SYSTEMS 5-37 5-612. MONITORING AND REPORTING REQUIREMENTS FOR MUNICIPAL PROVIDERS AND INDIVIDUAL USERS 5-38 5-613. REMEDIAL GROUNDWATER ACCOUNTING FOR CONSERVATION REQUIREMENTS 5-40 5-614. AUDITS OF CONSERVATION REQUIREMENTS 5-41 APPENDIX 5-42 APPENDIX 5A: METHODOLOGY FOR CALCULATING TOTAL GPCD REQUIREMENTS FOR LARGE MUNICIPAL PROVIDERS 5-42 APPENDIX 5B: LOST & UNACCOUNTED FOR WATER AND ALLOWABLE ESTIMATED USES 5-44 APPENDIX 5C: NON-PER CAPITA CONSERVATION PROGRAM BEST MANAGEMENT PRACTICES 5-45 APPENDIX 5D: MUNICIPAL WATER PROVIDERS IN THE PINAL AMA 5-56 BIBLIOGRAPHY 5-57 CHAPTER 6: INDUSTRIAL 6-1 SECTION 6.1: INTRODUCTION 6-1 6.1.1: WHAT IS AN INDUSTRIAL WATER USER? 6-1 6.1.2: INDUSTRIAL CONSERVATION PROGRAMS – HISTORY AND BACKGROUND 6-1 6.1.2.1: ALL INDUSTRIAL USERS 6-2 6.1.2.2: TURF-RELATED FACILITIES 6-2 6.1.2.3: SAND AND GRAVEL FACILITIES 6-2 6.1.2.4: MINING FACILITIES 6-3 6.1.2.5: LARGE-SCALE POWER PLANTS 6-3 6.1.2.6: LARGE-SCALE COOLING FACILITIES 6-3 6.1.2.7: DAIRIES 6-3 6.1.2.8: CATTLE FEEDLOTS 6-3 6.1.2.9: NEW LARGE LANDSCAPE USERS 6-4 6.1.2.10: NEW LARGE INDUSTRIAL USERS 6-4 SECTION 6.2: RELATIONSHIP OF THE INDUSTRIAL SECTOR TO ACHIEVEMENT OF THE AMA WATER MANAGEMENT GOAL 6-4 6.2.1: PAMA INDUSTRIAL SECTOR DESCRIPTION 6-4 6.2.2: INDUSTRIAL WATER USE PROFILE 6-6 6.2.2.1: TURF-RELATED FACILITIES 6-7 6.2.2.2: SAND AND GRAVEL FACILITIES 6-7 6.2.2.3: MINING FACILITIES 6-7 iv 6.2.2.4: LARGE-SCALE POWER PLANTS 6-8 6.2.2.5: DAIRIES 6-8 6.2.2.6: FEEDLOTS 6-8 6.2.2.7: NEW LARGE LANDSCAPE USERS 6-8 6.2.2.8: NEW LARGE INDUSTRIAL USERS 6-8 6.2.2.9: OTHER INDUSTRIAL USERS 6-8 SECTION 6.3: INDUSTRIAL CONSERVATION PROGRAMS DESCRIPTION 6-10 6.3.1: ALL INDUSTRIAL USERS CONSERVATION PRORAM DESCRIPTION 6-10 6.3.2: TURF-RELATED FACILITY PROGRAM DESCRIPTION 6-11 6.3.2.1: MAXIMUM ANNUAL WATER ALLOTMENT 6-11 6.3.2.2: ADDITIONAL CONSERVATION REQUIREMENTS 6-13 6.3.2.3: TREATED EFFLUENT USE ADJUSTMENT 6-13 6.3.2.4: FLEXIBILITY ACCOUNT 6-13 6.3.2.5: MONITORING AND REPORTING REQUIREMENTS 6-14 6.3.3: SAND AND GRAVEL FACILITY PROGRAM DESCRIPTION 6-14 6.3.4: MINING FACILITY PROGRAM DESCRIPTION 6-14 6.3.5: LARGE SCALE POWER PLANT PROGRAM DESCRIPTION 6-15 6.3.5.1: STEAM ELECTRIC AND COMBINED-CYCLE POWER PLANTS POWER PLANTS 6-15 6.3.5.2: COMBUSTION TURBINE PLANTS 6-15 6.3.6: LARGE-SCALE COOLING FACILITY PROGRAM DESCRIPTION 6-16 6.3.7: DAIRY PROGRAM DESCRIPTION 6-16 6.3.7.1: ALLOTMENT BASED REQUIREMENTS 6-16 6.3.7.2: BEST MANAGEMENT PRACTICES REQUIREMENTS 6-17 6.3.8: CATTLE FEEDLOT PROGRAM DESCRIPTION 6-18 6.3.9: NEW LARGE LANDSCAPE USER PROGRAM DESCRIPTION 6-18 6.3.10: NEW LARGE INDUSTRIAL USER PROGRAM DESCRIPTION 6-19 SECTION 6.4: INCENTIVES FOR THE USE OF RENEWABLE SUPPLIES AND REMEDIAL GROUNDWATER 6-19 SECTION 6.5: NON-REGULATORY EFFORTS 6-19 SECTION 6.6: INDUSTRIAL CONSERVATION REQUIREMENTS AND MONITORING AND REPORTING REQUIREMENTS FOR ALL INDUSTRIAL USERS 6-20 6-601.