2015 Urban Water Management Plan. for the City of Lompoc

Transcription

1 2015 Urban Water Management Plan for the City of Lompoc June 21, 2016

2 Final 2015 Urban Water Management Plan Final for the City of Lompoc Prepared Under the Responsible Charge of: Ron Munds Associate Planner, Water Systems Consulting, Inc. 6/21/2016

3 City of Lompoc 2015 Urban Water Management Plan Final Final Table of Contents TABLE OF CONTENTS Table of Contents... i List of Tables... iv List of Figures... v List of Terms and Acronyms... vi Executive Summary... vii 1 Introduction and Overview Plan preparation Coordination Plan Adoption, Submittal, and Implementation System Description Service Area Description and boundaries Service Area climate Service Area Population Service Area Demographics System Water Use Water Demands Low Income Demands Sales to Other Water Agencies Additional Water Uses and Losses Total Water Use Water Use Reduction Plan Baselines and Targets Baseline Water Use Target Water Use Method 1 Baseline Reduction Method Method 2 Efficiency Standard Method Method 3 Hydrologic Region Method Method 4 BMP Based Method Minimum Water Use Reduction Requirement Summary of Baseline and Target Water Use System Supplies i

4 City of Lompoc 2015 Urban Water Management Plan Final Final Table of Contents 6.1 Water Sources Groundwater Groundwater Management Transfer Opportunities Desalinated Water Opportunities Recycled Water Opportunities Wastewater Treatment Facilities Wastewater Flow Projections Water Recycling Facilities Potential Uses of Recycled Water Future Water Projects Expansion of the Groundwater Program Recycled Water Groundwater Recharge Water Supply Reliability Water Supply Reliability Basis of Water Year Data Projected Normal Year Supply/Demand Projected Single Dry Year Supply/Demand Projected Multiple Dry Year Supply/Demand Resource Maximization and Import Minimization Factors Affecting Supply Reliability Water Quality Factors Climatic Factors Water Shortage Contingency Planning Stages of Action and Reduction Objectives Mandatory Prohibitions on Water Wasting Penalties Mechanism for Determining Water Use Reductions Revenue and Expenditure Impacts Actions during a Catastrophic Interruption Projected Three Year Minimum Supply Demand Management Measures ii

5 City of Lompoc 2015 Urban Water Management Plan Final Final Table of Contents 9.1 Demand Management Measures DMM Water Waste Prevention DMM Metering DMM Conservation Pricing DMM Public Information Programs DMM Water Loss Control DMM Conservation Coordinator and Staffing Support OTHER DEMAND MANAGEMENT MEASURES Water Audits Water Retrofit Program Landscape Rebate Program High Efficiency Clothes Washer Programs Dishwasher Rebate Program Rain Barrel Rebate Program Leak Detection Program Appendix A. DWR Checklist... A Appendix B. Notification and Outreach... B Appendix C. Resolution of Adoption... C Appendix D. AWWA Water Loss Audit... D Appendix E. Water Conservation Ordinances... E Appendix F. Lompoc Groundwater Management Plan... F Appendix G: Water Quality Report... G Appendix H: Drought Groundwater Pumping Summary...H Appendix I: Document References... I iii

6 City of Lompoc 2015 Urban Water Management Plan Final Final List of Tables LIST OF TABLES E 1 Future Water Supply and Demand Summary... viii Table 2 1 DWR Schedule Table 2 2 Summary of Changes in the UWMP Act Since Table 2 3 Agency Coordination Table 3 1 Lompoc Climate Data Table 3 2 Lompoc Climate Data (continued) Table 3 3 City of Lompoc Annual Growth Rate Projections Table 3 4. Population Historical, Current, & Projected Table 3 5 Population Profile Table 3 6 Employment Characteristics Table 4 1 Water Deliveries, 2010, AFY Table 4 2 Water Deliveries, 2015, AFY Table 4 3 Projected Water Deliveries, 2020, AFY Table 4 4 Projected Water Deliveries, , AFY Table 4 5 Projected Water Deliveries 2035, AFY Table 4 6. Cumulative Low Income Water Deliveries, AFY Table 4 7. Non Revenue Water, AFY Table 4 8. Projected Total Water Use, AFY Table 5 1 Ten Year Baseline Period Table 5 2 Five Year Baseline Period Table 5 3 Water Use Targets for each Method Table 5 4 Interim and Baseline Targets Table 6 1 Historic Volume Pumped, AFY Table 6 2 Projected Groundwater Pumping, AFY Table 6 3 Wastewater Flow Projections, AFY Table UWMP Recycled Water Use Projected for 2015 and Actual 2015 Recycled Water Use, AFY Table 6 5 Quantity of LRWRP Recycled Water Effluent Meeting Title 22 Standards Table 6 6. Projected Recycled Water Use, AFY Table 7 1. Basis of Water Year Data Table 7 2. Historical Water Supply Conditions Table 7 3. Supply and Demand Normal Year, AFY Table 7 4. Supply and Demand Comparisons Single Dry Year, AFY Table 7 5. Supply and Demand Comparison Multiple Dry Year Events, AFY Table 7 6. Factors Resulting in Inconsistency of Supply Table 8 1 Water Shortage Contingency Rationing Stages Table 8 2. Water Shortage Contingency Mandatory Prohibitions Table 8 3 City s Projected Three year Minimum Water Supplies, AFY Table 9 1. Demand Management Measures Table 9 2. Single Family Conservation Pricing Rate Structure iv

7 City of Lompoc 2015 Urban Water Management Plan Final Final List of Figures Table 9 3 Multi family and CII Water Rates Table 9 4 Base Fees for Meter Size Table 9 5 Participation in Water Conservation Programs LIST OF FIGURES Figure 3 1. City of Lompoc Water Service Area Figure 3 2 Historical, Current and Projected Population Figure 4 1 Past, Current and Projected Water Deliveries Figure 5 1 Historic Gross Water Use and Per Capita Water Use Figure 5 2 Historical, Baseline, Targets, and Projected GPCDs Figure 6 1 Lompoc Groundwater Basin Map v

8 City of Lompoc 2015 Urban Water Management Plan Final Final List of Terms and Acronyms LIST OF TERMS AND ACRONYMS af Acre Feet AFY acre feet per year AWWA American Water Works Association CDDW California Division of Drinking Water CEQA California Environmental Quality Act CII Commercial, Industrial, and Institutional CIMIS California Irrigation Management Information System DMM Demand Management Measure DWR California Department of Water Resources EPA U.S. Environmental Protection Agency GIS Geographical Information System HCF Hundred Cubic Feet HECW High Efficiency Clothes Washer HET High Efficiency Toilet IRWMP Integrated Regional Water Management Plan MG million gallons NRW non revenue water SB7 Senate Bill x 7 7 SB7 GUIDEBOOK Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use SBCOG Santa Barbara Council of Governments SWP California State Water Project UWMP Urban Water Management Plan UWMP Act Urban Water Management Planning Act UWMP Guidebook Guidebook to Assist Water Suppliers in the Preparation of a 2010 Urban Water Management Plan vi

9 City of Lompoc 2015 Urban Water Management Plan Final Executive Summary EXECUTIVE SUMMARY The City of Lompoc (City) has diligently monitored and managed its water resources for many years. Faced with increasingly restrictive budgets, population growth, limited resources, and the commitment to serving the community s needs, the City has fostered a management style which is pro active rather than reactive, with an emphasis on actions which achieve practical results. This philosophy is the foundation for the Utilities Department's development of the Urban Water Management Plan (UWMP). To evaluate the current water supply and delivery systems and to plan for needed expansion and improvements through the year 2035, the City has undertaken the preparation of this document. The purposes of the plan are to assess current and future water use trends in the community, describe the sources of water supply and the water system, and document the water demand management measures in place to balance supply and demand. The Plan is consistent with the goals and policies presented in the City s General Plan and works in conjunction with that plan to provide adequate water resources to meet the City s future planned growth. The City s Plan has been prepared in accordance with the Urban Water Management Planning Act (Act). The Act is defined by the California Water Code, Division 6, Part 2.6, and Sections through The Act became part of the California Water Code with the passage of Assembly Bill 797 during the regular session of the California legislature. The Act requires every urban water supplier that provides water for municipal purposes to more than 3,000 connections, or supplying more than 3,000 acre feet (af) of water annually, to adopt and submit a plan every five years to the California Department of Water Resources (DWR). Subsequent assembly bills have amended the Act. This plan serves as a long range planning document for water supply and includes the following sections: 1. Introduction and Overview 2. Plan Preparation 3. System Description 4. System Water Use 5. Baseline and Targets 6. System Supplies 7. Water Supply Reliability 8. Water Shortage Contingency Plan 9. Demand Management Measures vii

10 City of Lompoc 2015 Urban Water Management Plan Final Executive Summary In summary, based on the water supply and demand analysis provided in this UWMP and with continued proactive management of its water resources, the City water supply is adequate to meet both current and future water demands. E 0 1 Future Water Supply and Demand Summary Supply totals (1) 8,225 8,225 8,225 8,225 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 2,721 2,596 2,468 2,338 Difference as % of Supply 33% 32% 30% 28% Difference as % of Demand 49% 46% 43% 40% (1) Based on combined well production capabilities and pumping records from (2) Demand totals are calculated by multiplying projected population times 117 gpcd (the City s SB 7 water reduction goal) viii

11 City of Lompoc 2015 Urban Water Management Plan Final 1. Introduction and Overview 1 INTRODUCTION AND OVERVIEW The California Water Code requires urban water suppliers within the state to prepare and adopt Urban Water Management Plans (UWMPs) for submission to the California Department of Water Resources (DWR). The UWMPs, which are required to be filed every five years, must satisfy the requirements of the Urban Water Management Planning Act (UWMP Act) of 1983, including amendments that have been made to the Act and other applicable regulations. The UWMP Act requires urban water suppliers servicing 3,000 or more connections, or supplying more than 3,000 acre feet (af) of water annually, to prepare an UWMP. The purpose of the UWMP is for water suppliers to evaluate their long term resource planning and establish management measures to ensure adequate water supplies are available to meet existing and future demands. The UWMP provides a framework to help water suppliers maintain efficient use of urban water supplies, continue to promote conservation programs and policies, ensure that sufficient water supplies are available for future beneficial use, and provide a mechanism for response during water drought conditions. The UWMP is a valuable planning tool used for multiple purposes including: Serves as a valuable resource to the community and other interested parties regarding water supply and demand, conservation and other water related information Meets a statutory requirement of the California Water Code Provides a key source of information for Water Supply Assessments (WSAs) and Written Verifications of Water Supply Supports regional long range planning documents including City and County General Plans Provides a standardized methodology for water utilities to assess their water resource needs and availability Serves as a critical component of developing Integrated Regional Water Management Plans (IRWMPs) Provides a resource for regional involvement in the California Water Plan This plan, which was prepared in compliance with the California Water Code, and as set forth in the 2015 guidelines and format established by the DWR, constitutes the City of Lompoc s (City) 2015 UWMP. 1 1

12 City of Lompoc 2015 Urban Water Management Plan Final Final 2. Plan preparation 2 PLAN PREPARATION This plan was prepared based on guidance from DWR s Guidebook to Assist Water Suppliers in the Preparation of a 2015 Urban Water Management Plan (UWMP Guidebook): (1), DWR Urban Water Management Plans Public Workshops and Webinars, Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (SB7 Guidebook) (2), and the 2015 DWR Review Sheet Checklist (Appendix A). The 2015 UWMPs must be submitted to DWR by the water purveyors by July 1, Usually, UWMPs are due on December 31 of years ending in 0 and 5, but a six month extension has been granted for submittal of the 2015 UWMPs. The draft 2015 UWMP Guidebook became available in November 2015 and was finalized in February DWR s 2015 UWMP schedule is summarized in Table 2 1. Table 2 1 DWR Schedule Date November, 2015 December, 2015 January, 2016 March, 2016 July, 2016 Event/Task Draft Guidebook released Workshops Final Draft Guidebook released Final Guidebook, materials and tools released UWMPs due to DWR A DWR Review Sheet checklist is provided in Appendix A as a reference for the various sections within this UWMP that address the requirements of the UWMP Act. 2 1

13 City of Lompoc 2015 Urban Water Management Plan Final Final 2. Plan preparation Table 2 2 summarizes changes to the UWMP Act since 2010 that have been addressed in this UWMP. Table 2 2 Summary of Changes in the UWMP Act Since 2010 Change CWC Section Legislative Bill Summary Demand Management Measures Submittal Date Electronic Submittal Standardized Forms Water Loss Estimating Future Water Savings Voluntary Reporting of Energy Intensity Defining Water Features (f)(1) and (2) AB 2067, (d) AB 2067, (a) (2) SB 1420, (a) (2) SB 1420, (e) (1) (J) and (e) (3) (A) and (B) SB 1420, (e) (4) SB 1420, (a) and (b) SB 1036, AB 2409, 2010 Requires water suppliers to provide narratives describing their water demand management measures, as provided. Requires retail water suppliers to address the nature and extent of each water demand management measure implemented over the past 5 years and describe the water demand management measures that the supplier plans to implement to achieve its water use targets. Requires each urban water supplier to submit its 2015 plan to the Department of Water Resources by July 1, Requires the plan, or amendments to the plan, to include any standardized forms, tables, or displays specified by the department. Requires the plan, or amendments to the plan, to include any standardized forms, tables, or displays specified by the department. Requires a plan to quantify and report on distribution system water loss. Provides for water use projections to display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans, when that information is available and applicable to an urban water supplier. Provides for an urban water supplier to include certain energy related information, including, but not limited to, an estimate of the amount of energy used to extract or divert water supplies. Requires urban water suppliers to analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas. 2.1 COORDINATION To prepare this UWMP, the City of Lompoc (City) coordinated with multiple neighboring and stakeholder agencies. The coordination efforts were conducted to: 1) inform the agencies of the City s efforts and activities; 2) gather high quality data for use in developing this UWMP; and 3) coordinate planning activities with other related regional plans and initiatives. The coordination activities conducted by the City are summarized in Table 2 3. The notification letters can be found in Appendix B. Additionally, the City encouraged community participation in the development of UWMP by presenting the draft UWMP to the Utility Commission, an advisory body to the City Council, on May 9, Commissioners and the public were encouraged to provide comments and input into the plan at this meeting. 2 2

14 City of Lompoc 2015 Urban Water Management Plan Final Final 2. Plan preparation Table 2 3 Agency Coordination Agency / Organization Participated in developing the plan Commented on the draft Attended public meetings Was contacted for assistance Was sent a copy of the draft plan 1 Was sent a notice of intention to adopt City of Lompoc Utility X X X X X X Commission Mission Hills CSD X X X Vandenberg Village CSD X X X Santa Ynez Water X X Conservation District Santa Barbara County X X 1 Electronic copies of the plan were provided to these agencies 2.2 PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION To fulfill the requirements of Water Code Section 10621(c), the City sent letters of notification of preparation of the 2015 UWMP to all neighboring water agencies and Santa Barbara County 60 days prior to the public hearing. Copies of the 60 day notification letters are attached as Appendix B. To fulfill the requirements of Water Code Section of the UWMP Act, the City made the draft 2015 UWMP available for public review prior to the Public Hearing and held a public hearing on June 21, The public hearing was noticed on May 29, 2016 and June 5, 2016 and the hearing notice is attached in Appendix B. In addition, the City maintained a copy of the draft UWMP in its office prior to the public hearing. The Final 2015 UWMP was formally adopted by the City Council on June 21, A copy of the Adoption Resolution is included in Appendix C. A copy of the Final 2015 UWMP was sent to the California State Library, DWR (electronically using the WUEdata reporting tool), and other appropriate agencies within 30 days of adoption. The City will make the 2015 UWMP available for public review in its offices during normal hours no later than 30 days after the adoption of the plan by the City Council and filing with DWR. The implementation of this plan shall be carried out as described unless significant changes occur between the adoption of this plan and the 2020 plan. If such significant changes do occur, the City will amend and readopt the plan as required by the California Water Code. 2 3

15 City of Lompoc 2015 Urban Water Management Plan Final Final 3. System Description 3 SYSTEM DESCRIPTION 3.1 SERVICE AREA DESCRIPTION AND BOUNDARIES The City is located along California s central coast near the mouth of the Santa Ynez River approximately 130 miles northwest of Los Angeles in Santa Barbara County. The City provides potable water service to an area approximately 4,690 acres or 7.3 square miles. As shown in Figure 3 1, the water service area is defined by the City limits, not including the Lompoc Federal Correctional Complex. Additionally, the service area includes homes located one mile south along Miguelito Canyon Road, the Lompoc Cemetery District, located at the southeastern edge of the service area, and the City s River Park. River Park includes 45 developed acres adjacent to the Santa Ynez River on the east edge of the water service area. The City water service area extends to the north of the Santa Ynez River to include the La Purisima Highlands neighborhood, Allen Hancock College and Ken Adams Park. 3 1

16 City of Lompoc 2015 Urban Water Management Plan Final Final 3. System Description Figure 3 2. City of Lompoc Water Service Area 3 2

17 City of Lompoc 2015 Urban Water Management Plan Final Final 3. System Description 3.2 SERVICE AREA CLIMATE The climate in the City can be classified as coastal with average rainfall rates of about 15 inches per year. Most of the annual precipitation occurs during the period from November through April. Table 3 1 and Table 3 2 summarize monthly average reference evapotranspiration (ETo) rates, rainfall, and temperature. Table 3 1 Lompoc Climate Data January February March April May June Standard Average ETo, in Average Rainfall, in Average Temperature, F Data from California Irrigation Management Information System (CIMIS), (period of record is from January 2011 through June 2015) 2 Data from Western Regional Climate Center, Station: Station: (period of record 1917 to 2015). Table 3 2 Lompoc Climate Data (continued) July August Sept. Oct. Nov. Dec. Annual Standard Average ETo, in Average Rainfall, in Average Temperature, F Data from California Irrigation Management Information System (CIMIS), (period of record is from January 2011 through June 2015) 2 Data from Western Regional Climate Center, Station: Station: (period of record 1917 to 2015). The average annual temperature is 58.3 degrees Fahrenheit ( F). The City has mild weather year round, with typically warm daytime temperatures and cool nighttime temperatures. The City does not have extreme seasonal variations, though the area is subject to normal weather fluctuations often experienced when influenced by the nearby Pacific Ocean. 3.3 SERVICE AREA POPULATION Historically, the population of Lompoc has experienced periods of rapid growth. From the late 1950s through the mid 1980s, the growth was primarily generated by employment at Vandenberg Air Force Base (Vandenberg AFB). The most recent episode of rapid population growth for Lompoc in conjunction with Vandenberg AFB occurred from 1978 to the mid 1980s when plans were underway for Space Shuttle launches. However, after the Space Shuttle Challenger Disaster in 1986, plans for shuttle launches from Vandenberg AFB were discontinued. Consequently, employment at Vandenberg AFB was not as dominant a factor in the City s growth rate as it had been prior to Beginning in the late 1980s employment growth in the Santa Barbara Goleta area, combined with lower housing costs in Lompoc, triggered accelerated population growth. 3 3

18 City of Lompoc 2015 Urban Water Management Plan Final Final 3. System Description Rapid population growth took place between 1960 and 1965 when the City grew approximately 10.83% annually. By the end of the 1960s the City had an annual growth rate of 5.78% for the decade. In the 1970s the annual growth rate was approximately 0.40%. The City s population again increased rapidly during the 1980s with an annual growth rate of 3.67%. From 1990 to 2000, the City s population increased at an annual rate of 0.90 %. Since 2000, the City s population has remained virtually unchanged, growing at an annual rate of less than 0.30 %; the lowest rate of growth the City has experienced over the past 45 years. More recently, from 2010 to 2013, the annual growth rate has stagnated even more to a 0.20% growth rate. Within these few years the population has had both annual increases and decreases, resulting in an extremely slow growth forecast for the next decade. The United States Federal Penitentiary (USP) population is a significant subset of the City s total population. It comprises the largest group quarters population in the City and one of the largest in Santa Barbara County. Although the prison facilities are located within the City, they are relatively selfsufficient because they do not rely on the City for municipal services, such as water, wastewater, and electric. However, the USP does haul refuse (excluding food waste and recyclables) to the City s landfill. In order to project the City current and future population, the DWR Population Tool was used. The tool uses 1990, 2000 and 2010 census data and the service area boundaries to access census block data which then calculates population. Based on the output of the tool, the City of Lompoc s 2015 service area population, excluding the USP, is 41,737. The City s projected population growth rate, excluding the USP, from is shown in Table 3 3. The historic, current and projected population projections for the City, excluding the USP, are presented in Table 3 4 and displayed in Figure 3 3. Table 3 3 City of Lompoc Annual Growth Rate Projections Growth Rates 1 0.2% 0.45% 0.45% 0.45% 1 Regional Growth Forecast , SBCOG, December 2012; City of Lompoc General Plan 2 Represents annual growth rate; the 5 year cumulative growth rate is 1% for and 2.25% for Table 3 4. Population Historical, Current, & Projected Lompoc 38,240 38,850 41,737 42,156 43,113 44,092 45,093 Note: Population figures based on DWR population tool and 2010 Census Block data and the growth rate in Table

19 City of Lompoc 2015 Urban Water Management Plan Final Final 3. System Description Population 46,000 44,000 42,000 40,000 38,000 36,000 34, Year Figure 3 3 Historical, Current and Projected Population 3.4 SERVICE AREA DEMOGRAPHICS Since population demographics and employment characteristics of the community can influence water demand in the future, the following section looks at current and future trends in these areas. The City of Lompoc is a predominately residential community contained within square miles surrounded by equestrian ranches, farms, vineyards and rolling hills. Residential land uses comprise 46% of the City s total area, excluding public rights of way and federal property. Lompoc has a fairly youthful and increasingly racially diverse population whose economic well being is largely influenced by the presence of large government institutions; most notably, Vandenberg AFB. Table 3 5 is the population profile for the City and Table 3 6 summarizes the City s employment characteristics. Table 3 5 Population Profile Demographic City of Lompoc Trend Median Age 33.9 Years Increasing Minorities 39% Increasing Unemployment Rate 9.7% Declining Source: City of Lompoc 2014 Housing Element Table 3 6 Employment Characteristics Agriculture 1,044 1,104 1,164 1,224 1,278 1,332 1,386 Mining Construction Manufacturing Transportation Wholesale Trade Retail Trade 1,050 1,350 1,440 1,275 1,350 1,425 1,500 Finance & Real Estate Services 3,326 3,534 4,120 4,838 5,053 5,268 5,483 Government 14,720 14,880 15,040 15,200 15,360 15,520 15,680 Source: City of Lompoc 2014 Housing Element 3 5

20 City of Lompoc 2015 Urban Water Management Plan Final Final 4. System Water Use 4 SYSTEM WATER USE This section describes and quantifies the City s current and projected water use through the year Accurately tracking and reporting current water demands allows the City to properly analyze the use of their resources in order to conduct good resource planning. Estimating future demand as accurately as possible allows the City to manage its water supply and appropriately plan for infrastructure investments. Assessments of future growth and related water demand, done in coordination with the City s General Plan, provides essential information for developing demand projections to meet the communities build out goals. 4.1 WATER DEMANDS The following tables (Table 4 1, Table 4 2, Table 4 3, Table 4 4 and Table 4 5) show the past, current, and projected water deliveries for the City based on historical water use. Future water demands are projected using the per capita water use reductions associated with the Senate Bill x 7 7 (SB7) targets (Table 5 4) and projected population (Table 3 4). A summary of the past, current and projected water deliveries is shown in Figure 4 1. Table 4 1 Water Deliveries, 2010, AFY Metered Not Metered Total Water use sectors # of # of Volume Volume Volume Connections Connections Single family 7,553 1, ,942 Multi family 1,070 1, ,111 Commercial/ Institutional Industrial Landscape Agriculture Other Total 9,414 4, , connections and delivery data were derived from the City s customer billing database. 2 Other category includes hydrant meters and other City uses where hydrant meters are utilized. 4 1

21 City of Lompoc 2015 Urban Water Management Plan Final Final 4. System Water Use Table 4 2 Water Deliveries, 2015, AFY Metered Not Metered Total Water use sectors # of # of Volume Volume Volume Connections Connections Single family 7,947 1, ,683 Multi family 1,125 1, ,015 Commercial/ Institutional Industrial Landscape Agriculture Other Total 9,870 3, , connections and delivery data were derived from the City s customer billing database. 2 Other category includes hydrant meters and other City uses where hydrant meters are utilized. Table 4 3 Projected Water Deliveries, 2020, AFY 2020 Metered Not Metered Total Water use sectors # of # of Volume Volume Volume Connections Connections Single family 8,027 2, ,218 Multi family 1,136 1, ,338 Commercial/ Institutional Industrial Landscape Agriculture Other Total 9,969 5, ,269 1 Other category includes hydrant meters and other City uses where hydrant meters are utilized. 4 2

22 City of Lompoc 2015 Urban Water Management Plan Final Final 4. System Water Use Table 4 4 Projected Water Deliveries, , AFY Water use Metered Metered sectors # of Connections Volume # of Connections Volume Single family 8,209 2,271 8,395 2,325 Multi family 1,162 1,370 1,188 1,402 Commercial/ Institutional Industrial Landscape Agriculture Other Total 10,195 5,394 10,427 5,522 1 Other category includes hydrant meters and other City uses where hydrant meters are utilized. Table 4 5 Projected Water Deliveries 2035, AFY 2035 Water use sectors Metered # of Connections Volume Single family 8,586 2,380 Multi family 1,215 1,435 Commercial/ Institutional Industrial Landscape Agriculture 0 0 Other Total 10,664 5,653 1 Other category includes hydrant meters and other City uses where hydrant meters are utilized. 4 3

23 City of Lompoc 2015 Urban Water Management Plan Final Final 6,000 5,000 Total Deliveries (afy) 4,000 3,000 2,000 1, System Water Use Other* Landscape Industrial Commercial/ Institutional Multi family Year Single family * Hydrant meters and other City uses where hydrant meters are Figure 4 2 Past, Current and Projected Water Deliveries Low Income Demands Changes to the California Water Code section since 2005 require demand projections to include projected water use for single family and multi family residential housing needed for lower income households. Low income households are defined as households making less than 80% of median household income. The Regional Housing Needs Assessment (RHNA) determines the housing needs in each jurisdiction over the planning period. Santa Barbara County Association of Government s (SBCAG) current RHNA planning period is from January 1, 2014, through June 30, For this planning period, 210 new low income units are projected to be needed in the City by It is important to note that the RHNA requirement is to have land zoned for the projected low income housing need but not necessarily build the units. Any new development that is approved must either build 10% of the total as low income housing or pay an in lieu fee. For the purposes of this UWMP, the low income deliveries projections are included in the City s total projected water deliveries shown in Table 4 1 through Table 4 5. The estimated water use for the projected number of low income housing units is calculated by assuming the average water usage factor per connection, the projected demand for the low income residential units is shown in Table

24 City of Lompoc 2015 Urban Water Management Plan Final Final 4. System Water Use Table 4 6. Cumulative Low Income Water Deliveries, AFY Low income Water Demands Single Family Residential Multi Family Residential Total Sales to Other Water Agencies The City does not sell water to other water agencies in the area. There is an agreement in place between Mission Hills Community Services District and the City to supply emergency water to each agency in the event of a water supply emergencies. Additional Water Uses and Losses Table 4 7 shows the past, current and projected amount of non revenue water (NRW) for the City. NRW is defined as the water losses plus authorized unbilled (metered and unmetered) water consumption. A detailed description of water losses and NRW are provided in Appendix D, however the current NRW water rate is under 6% and is not expected to change significantly over the planning horizon of the document. Table 4 7. Non Revenue Water, AFY Water use Non revenue water (NRW) Total Total Water Use Table 4 8 shows the past, current, and projected total water use for the City. Total water use includes water delivered to customers and non revenue water. Table 4 8. Projected Total Water Use, AFY Water Use Total water deliveries 3,998 5,269 5,394 5,522 5,653 Sales to other water agencies Non revenue water (NRW) Total 4,202 5,473 5,598 5,726 5, WATER USE REDUCTION PLAN Per capita water use for 2015 was 91 gpcd which is below the water use targets of SB7 and the interim target of 120 gpcd. The 2020 target is 117 gpcd, based on water use trends and water supply projections. The City will meet or exceed the projected water use targets by maintaining their current water conservation strategy and programs. 4 5

25 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets 5 BASELINES AND TARGETS Senate Bill x 7 7 (SB7) which was incorporated into the UWMP Act in 2009, requires that all water suppliers increase water use efficiency with the overall goal to decrease per capita water consumption within the state by 20 percent by the year SB7 required DWR to develop certain criteria, methods, and standard reporting forms through a public process that could be used by water suppliers to establish their baseline water use and determine their water conservation targets. SB7 and the SB7 Guidebook specify methodologies for determining the baseline water demand, 2015 interim urban water use target and the 2020 urban water use target for the City, as described in the following sections. 5.1 BASELINE WATER USE The first step in developing the baseline water use for the City is determining the applicable range of years to calculate the baseline average. The UWMP Act stipulates an agency may use either a 10 or 15 year average to determine their baseline. If 10 percent of total urban retail water deliveries in 2008 were from recycled water, then the agency can use a 15 year average baseline if it chooses. The City s recycled water use was less than 10 percent of its 2008 retail water delivery. Consequently, the first baseline period will consist of a continuous 10 year period that can be selected between 1995 and As shown in Table 5 1, the City s selected 10 year base period begins in year 1996 and ends in year In addition to the 10 year baseline, a 5 year baseline is also calculated, which is used to establish the minimum criteria for the City s use reduction targets. The UWMP Act requires the use of a continuous 5 year range with the end of the range ending between December 31, 2007 and December 31, 2010 to determine the baseline. As shown in Table 5 2, the City s selected 5 year base period begins in year 2003 and ends in year The City s historical gross water use and per capita water use for the period of 1995 through 2015 is shown in Figure

26 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets Calendar Year Distribution System Population Table 5 1 Ten Year Baseline Period Daily System Gross Water Use (afy) Annual Daily Per Capita Water Use (gpcd) 10 year running average ,319 4, ,581 5, ,843 5, ,105 5, ,367 5, ,629 5, ,751 5, ,873 5, ,995 5, ,117 5, ,240 5, ,362 5, ,484 5, ,606 5, ,728 4, ,850 4, Base Daily Per Capita Water Use 128 Calendar Year Distribution System Population Table 5 2 Five Year Baseline Period Daily System Gross Water Use (afy) Annual Daily Per Capita Water Use (gpcd) ,995 5, ,117 5, ,240 5, ,362 5, year running average ,484 5, ,606 5, ,728 4, ,850 4, Base Daily Per Capita Water Use

27 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets Population 45,000 40,000 35,000 30, City of Lompoc Population Average Per Capita Water Use (gpcd) Average Per Capita Water Use (gpcd) Figure 5 1 Historic Gross Water Use and Per Capita Water Use 5.2 TARGET WATER USE DWR provided four different methods to establish water conservation targets. These four methods are summarized in the following sections. Method 1 Baseline Reduction Method The Method water conservation target is defined as a 20 percent reduction of average per capita from the 10 year continuous baseline period. Based on the baseline daily per capita use of 128 gallons per capita per day (gpcd) determined previously, the target use for Method 1 is 102 gpcd. The 2015 interim water use target is simply the midpoint of the baseline and the 2020 water conservation target, or 115 gpcd for Method 1 in the City s case. Method 2 Efficiency Standard Method The 2020 water conservation target of this method is determined by calculating efficiency standards for indoor use separately from outdoor use for residential sectors, and an overall reduction of 10 percent for commercial, industrial, and institutional (CII) sectors. The aggregated total of the efficiency standards in each area is then used to create a conservation target. Very few agencies within the State have the data necessary to determine a target water use using Method 2. It is not feasible for the City to use this methodology since the City lacks the detailed landscaped area estimates to calculate the landscaped area water use. 5 3

28 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets Method 3 Hydrologic Region Method This method uses the ten regional urban water use targets for the State. Based on the water supplier s location within these regions, a static water use conservation target for 2020 is assigned. Urban water use targets (2020 conservation goals) for the hydrologic regions in California are included in the DWR Guidebook to Assist Urban Water Suppliers to Prepare a 2010 UWMP. To determine the target using Method 3, 95 percent of the region specific conservation goal is calculated. Based on a 2020 target of 123 gpcd for the Central Coast region, the City s Method 3 target is 117 gpcd for The City s 2015 interim water use target for Method 3 is calculated to be 120 gpcd. Method 4 BMP Based Method Method 4 identifies water savings obtained through identified practices and subtracts them from the baseline daily per capita water use value identified for the water supplier. The water savings identified that can be used to reduce the baseline daily per capita water use value include: Indoor residential use savings; Commercial, industrial, and institutional savings; Landscape and water loss savings; and Metered savings. The Method 4 per capita water use target was calculated using the City s 10 year baseline period (1996 to 2005). A discussion of each of the savings components and the subsequent calculated savings specifically for the City is included below. Indoor Residential Savings. Since indoor and outdoor water use is delivered through a single meter, an assumption of 70 gpcd has been provided by DWR for standard residential indoor water use. To determine indoor residential savings potential, the draft provisional method outlines two methodologies. First, a best management practices (BMP) calculator has been developed to sum the savings for four conservation elements including single and multi family residential housing toilets, residential washers, and showerheads. The City will use what has been termed the default option to determine these savings. Based on the provisional method, this default value is 15 gpcd reduction in indoor water use. Commercial, Industrial, and Institutional Savings. Baseline CII water use can be established for the City based on data provided in the City s DWR Public Water Systems Statistics Sheet for years 1996 to Based on this data, the baseline per capita CII water use is 128 gpcd. The draft provisional method estimates a default value for CII savings of 10 percent. The CII water savings are therefore 17.9 gpcd. 5 4

29 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets Landscape and Water Loss Savings. The landscape and water loss water use is determined by subtracting the default indoor water use of 70 gpcd and CII water use of 17.9 gpcd from the calculated year s 1996 to 2005 baseline per capita use. Based on a 1996 to 2005 baseline per capita water use of 128 gpcd, the landscape and water loss use is 8.7 gpcd. The draft provisional method estimates a default value for landscape and water loss savings of 21.6 percent. The landscape and water loss savings are therefore 40.1 gpcd. Metered Savings. Metered savings are considered in addition to the savings attributed to the three sectors previously discussed. Because the City was fully metered in the midpoint year of 2005 (based on the methodology established by DWR) and no unmetered deliveries occurred, the unmetered per capita use was zero gpcd. Therefore, no savings from metering was calculated. The City s 2020 target water use is calculated as the baseline water use minus the total savings (residential indoor, CII, landscape, and water loss, and meter savings). In the City s case, the total water savings accounts for 25.5 gpcd, which equates to a 2020 target water use of 103 gpcd in 2020, and a corresponding interim water use target for Method 4 of 116 gpcd in MINIMUM WATER USE REDUCTION REQUIREMENT The final step in determining the applicability of the water use target for the City is to confirm the water use targets meet the minimum reduction requirements as defined by DWR. To confirm the chosen 2020 per capita target, the 5 year average baseline previously determined Table 5 2 is used. The chosen target (calculated using one of the four methods described above) must be less than 95 percent of the 5 year baseline. In order to meet this minimum criteria, the City s 2020 target per capita water use must be less than or equal to 117 gpcd. 5.4 SUMMARY OF BASELINE AND TARGET WATER USE Based on the 2020 water use targets calculated using the four methodologies described previously, the 2020 urban water use target for the City is 117 gpcd. The 2015 interim water use target is 122 gpcd. This target was determined using Method 3. This method gave the City the most flexibility in meeting the state mandated water reduction requirement. According to the DWR guidelines, this target is valid since it is less than the minimum 5 year baseline target confirmation criteria. Table 5 3 summarizes the baseline water use, the target per capita use determined by each of the four methods, and the selected target and interim target. Figure 5 2 displays the baseline and targets as well as historical and projected per capita water use. 5 5

30 City of Lompoc 2015 Urban Water Management Plan Final Final 5. Baselines and Targets Table 5 3. Water Use Targets for each Method Calculation Method Water Use Target (gpcd) Method 1: 80% of Baseline Per Capita 102 Water Use Method 2: Performance Standards Not calculated Method 3: 95% of Regional Target 117 Method 4: DWR Approach 103 Selected Urban Water Use Target Water Use (Gallons/Capita/Day) Interim Target (2015) Target (2020) Baseline Actual 2015 Use Projected Use (gpcd) Historical Use (gpcd) Figure 5 2 Historical, Baseline, Targets, and Projected GPCDs Table 5 4 summarizes the baseline, interim and 2020 targets. Table 5 4 Interim and Baseline Targets Parameter Water Use (gpcd) Base Daily Per Capita Water Use Daily Per Capita Water Use Interim Urban Water Use Target Urban Water Use Target

31 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies 6 SYSTEM SUPPLIES 6.1 WATER SOURCES The City s sole source of existing and planned water supply for the planning horizon ( ) is groundwater. The City s water system, which is operated by the Water Division of the Utilities Department, is composed of a well field, water treatment plant, storage reservoirs, a pump station and distribution lines. Water from the groundwater basin (Lompoc Plain) is pumped from ten wells located in the eastnortheast part of the City. Six of the wells were drilled in the 1960s; a seventh was drilled in 1988, an eighth in 1992, a ninth well in 2001, and a tenth well in The combined capacity of the ten wells is 8,195 gpm, or million gallons per day (MGD) if operated simultaneously (based on the capacity from 2012). Water from the wells is conveyed to the Lompoc Water Treatment Plant (LWTP), located at 601 East North Avenue. The LWTP, which was constructed in 1963, employs a lime caustic soda softening process to treat the water for hardness and to reduce total dissolved solids (TDS). Waste sludge from the softening process, along with waste filter wash water, is discharged and dried in on site sludge lagoons or dried in centrifuges. The dried sludge is utilized as an alternate daily cover material at the City s landfill. The peak treatment capacity of the LWTP is 10.0 MGD. From the LWTP, water is piped to the distribution system and to four distribution reservoirs. The four reservoirs have a total usable storage capacity of 10 to 11 million gallons. The reservoirs are located at an elevation of 320 feet above sea level. These reservoirs are connected to a gravity delivery grid, which has a single pressure zone for its service area. As of 2015, the distribution system involves approximately 135 miles of distribution lines ranging between two and sixteen inches in diameter size. The lines are located in a looping pattern, thereby, maintaining pressure for fire flow requirements. Sufficient capacity and pressure are available in these distribution lines to serve existing and anticipated future development within the existing service area. 6.2 GROUNDWATER The City overlies the Lompoc Plain portion of the Santa Ynez River Valley Groundwater Basin (DWR Groundwater Basin Designation 3 15) which is not adjudicated. The City, Mission Hills Community Services District (MHCSD), and Vandenberg Village Community Services District (VVCSD) are located in the western Santa Ynez River Valley Groundwater Basin. This area is comprised of the Lompoc Plain, Lompoc Upland, and Lompoc Terrace Sub basins, which collectively are referred as the Lompoc Groundwater Basin. The Lompoc Groundwater Basin is comprised of unconsolidated deposits that include older alluvium, younger alluvium, and river channel deposits. 6 1

32 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies The older continental deposits consist of the Careaga sand, Paso Robles formation, and Orcutt sand, and they comprise the lower aquifer within the Lompoc Groundwater Basin. The younger alluvium and riverchannel deposits comprise the upper aquifer. The younger alluvium and river channel deposits crop out within the Lompoc Plain. The older continental deposits underlie the younger alluvium within the Lompoc Plain, and they crop out within Lompoc Upland and Lompoc Terrace. While MHCSD and VVCSD pump from the lower aquifer, the City pumps from the main zone of the upper aquifer. The agricultural producers pump mostly from the upper aquifer. Figure 6 1 shows the boundaries and sub areas of the Lompoc Groundwater Basin. Figure 6 1 Lompoc Groundwater Basin Map Groundwater Management In 2013, the City prepared a Groundwater Management Plan (GWMP) pursuant to California Water Code (CWC) Section et. seq. for the portions of its water service area overlying the Lompoc Groundwater Basin. The City recognized the importance of maintaining a sustainable, reliable, highquality groundwater supply for the long term benefit of its citizens. 6 2

33 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies Adoption and implementation of this GWMP supported this goal and continues to help the City meet requirements in the CWC. The City adopted Resolution No. 5751(11) to prepare the GWMP after convening a public hearing on December 6, 2011, pursuant to Sections et. seq. of the CWC. The City adopted Resolution No (13) to adopt this GWMP on October 1, A copy of the GWMP can be found online at and in Appendix F. As part of the study, a previously developed groundwater model was used to assess the response of the Lompoc Groundwater Basin to projected pumping by the City, MHCSD, and VVCSD. The model was developed for the City in 1994, and updated for the City in 1997 (Hydrologic Consultants, Inc., 1997, HCI) and most recently by Timothy Durbin in The model represents the Lompoc Groundwater Basin, including the Lompoc Plain, Upland, and Terrace. The HCI regional model was used to simulate groundwater condition for a 35 year future period. The simulated groundwater levels show that an equilibrium will be achieved for the projected City, MHCSD, VVCSD, and agricultural pumping and the groundwater basin under continued operation of the Cachuma Project consistent with State Board Order and the Settlement Agreement. While groundwater levels display seasonal and yearly fluctuations, they do not have a long term downward trend. The seasonal fluctuations correspond to the counter seasonality of pumping and recharge from the Santa Ynez River. The yearly fluctuations correspond to yearly variations in the Santa Ynez River stream flows at the Narrows. Based on the results of the groundwater study and the development of the Lompoc Groundwater Management Plan, the groundwater basin is not considered to be in overdraft. Table 6 1 shows how much groundwater the City has pumped annually from the Lompoc Groundwater Basin to serve its customers since Table 6 2 shows the projected groundwater pumping to Table 6 1 Historic Volume Pumped, AFY Groundwater Type Groundwater Basin Alluvial Basin Lompoc Valley Groundwater Basin 4,475 4,688 4,993 4,785 4,222 Total groundwater pumped 4,475 4,688 4,993 4,785 4,222 Percent of total water supply 100% 100% 100% 100% 100% Table 6 2 Projected Groundwater Pumping, AFY Water Use Groundwater Pumping 5,455 5,578 5,705 5,

34 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies 6.3 TRANSFER OPPORTUNITIES As stated in Section 4.1, the City currently has an agreement in place with MHCSD to supply emergency water to each agency in the event of a water supply emergency. In the future, the City, MHCSD, and VVCSD will be exploring the possibility of integrated facilities operations within the Lompoc groundwater basins through interconnections between each of the three water distribution systems. This would provide flexibility in delivering water between agencies during water supply interruptions and/or during other water emergency situations. As of 2015, there are no transfer or exchange agreements in place. 6.4 DESALINATED WATER OPPORTUNITIES Development of desalinated water is not being considered for the current planning period, due to the availability of groundwater to meet the current and projected demand and the City s proximity (distance) to the ocean, which makes it cost prohibitive to consider desalination as a viable water supply alternative. 6.5 RECYCLED WATER OPPORTUNITIES The UWMP Act requires that the UWMP address the opportunities for development of recycled water: including the description of existing recycled water applications, quantities of wastewater currently being treated to recycled water standards, limitations on the use of available recycled water, an estimate of projected recycled water use, the feasibility of projected uses, and practices to encourage the use of recycled water. Wastewater Treatment Facilities The Lompoc Regional Wastewater Reclamation Plant (LRWRP) is owned by the City of Lompoc. The LRWRP treats wastewater from the City of Lompoc, Vandenberg Village Community Services District, and Vandenberg Air Force Base. Upgrade of the LRWRP was completed in November The Average Dry Weather Flow (ADWF) design capacity of the upgraded facility is 5.5 MGD, with a Peak Dry Weather Flow (PDWF) of 9.5 MGD. The peak wet weather capacity is 15 MGD. The upgraded LRWRP achieves biological nutrient (nitrogen) removal by utilizing oxidation ditches with denitrification and nitrification treatment. The flow enters secondary clarifiers before being transferred to flow equalization basins. Equalized flow is pumped through cloth media filters to prepare it for disinfection by ultraviolet radiation. Maximum flow through the disinfection units is 5.5 MGD. A portion of the final effluent is used for plant processes, including landscape irrigation for areas inside the facility. This occurs before the remainder of the plant flow is discharged to its surface receiving water, the Santa Ynez River, via San Miquelito Creek. 6 4

35 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies Wastewater Flow Projections The daily average flow rate to the plant for 2015 was approximately 2.98 MGD, or approximately 3,338 AFY. The City anticipates the daily average flow rate will continue to increase by the annual growth rate identified in Table 3 3 through 2035, as shown in Table 6 3. In addition to the City s system, the City has two satellite agencies, which convey sewage to the treatment plant: VVCSD and Vandenberg AFB. VVCSD has the contractual rights to 0.89 MGD of the plant capacity. Vandenberg AFB is a contract customer for wastewater treatment. Vandenberg s contract is not to exceed an average of 1.3 MGD during the dry weather flow, and not to exceed 3.4 MGD for the wet weather flow. Table 6 3 Wastewater Flow Projections, AFY Type of Wastewater Wastewater collected & treated in service area (1) 3,585 3,338 3,372 3,448 3,562 3,725 Volume that meets recycled water standard 3,585 3,338 3,372 3,448 3,562 3,725 (1) Wastewater collected assumes the growth rate in Section 3.3 Water Recycling Facilities The LRWRP utilizes advanced secondary and tertiary treatment technology. The plant, built in and substantially upgraded in 2009, is the City of Lompoc s fourth plant in its 80 year commitment to protecting the environment. The treatment process incorporates systems to reduce oxygen demanding organics by at least 85%. The high water quality is discharged to the Santa Ynez River, which maintains added beneficial uses for downstream users. The recycled effluent is treated to meet State of California Title 22 Standards, at the 23 MPN (most probable number) for coliform. In addition, all projected recycled effluent quantities are expected to meet State of California Title 22 Standards, as shown in Table 6 5. Table UWMP Recycled Water Use Projected for 2015 and Actual 2015 Recycled Water Use, AFY Use Type 2010 Projection for Actual Use Agricultural irrigation 0 0 Landscape irrigation 6 0 Commercial irrigation 0 0 Golf course irrigation 0 0 Wildlife habitat 0 0 Wetlands 0 0 Industrial reuse 0 0 Groundwater recharge 0 0 Seawater barrier 0 0 Geothermal/Energy 0 0 Indirect potable reuse 0 0 Total

36 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies Table 6 5 Quantity of LRWRP Recycled Water Effluent Meeting Title 22 Standards Year AFY 3,585 3,338 3,372 3,448 3,562 3,725 Potential Uses of Recycled Water The City of Lompoc s Recycled Water Feasibility Study (Study), November 2010, identified a total potential recycled water demand of approximately 1,900 AFY from users including schools, parks, and homeowner s associations. However, the feasibility study indicated that building the infrastructure to deliver the water was cost prohibitive when compared to the water supply benefit. Based on the results of the Study, the City currently does not have plans for facilitating the installation of dual distribution systems to deliver recycled water Incidental Recharge to the Santa Ynez River The LRWRP discharged an average of approximately 2.98 million gallons per day, or approximately 3,338 AFY in Effluent from the LRWRP is discharged into the Santa Ynez River via San Miguelito Creek. This provides a valuable source of incidental recharge for the Lompoc Plain groundwater sub basin and for users downstream of the City including agricultural interest, domestic uses and the environment. Additionally, the return flows to the river provide added protection to abate the potential for seawater intrusion in the lower reaches of the Santa Ynez River and the groundwater basin. Further study will be needed to determine if indirect potable reuse of the recycled water to augment the City water supply is feasible. Table 6 6 shows the future projected recycled water use within the City. Table 6 6. Projected Recycled Water Use, AFY User type Description al irrigation N/A Landscape irrigation N/A Commercial irrigation N/A Golf course irrigation N/A Wildlife habitat N/A Wetlands N/A Industrial reuse N/A Groundwater recharge N/A Seawater barrier N/A Geothermal/Energy N/A Indirect potable reuse Title ,372 3,448 3,562 3,725 Total 0 3,372 3,448 3,562 3,725 (1) Represents 100% of the recycled water discharged to the Santa Ynez River and does not take into consideration other factors effecting the recharge capacity of the groundwater basin such as seasonal river flow. 6 6

37 City of Lompoc 2015 Urban Water Management Plan Final Final 6. System Supplies 6.6 FUTURE WATER PROJECTS Because of the City s geographic location, there are limited options for future water supply projects. The City will be considering the following water supply projects alternatives if they are considered to be cost effective after further analysis. Expansion of the Groundwater Program As explained in Section 6.2, the Lompoc Groundwater Basin has three sub basins, the Lompoc Plain, Lompoc Terrace and the Lompoc Upland. Currently, the City draws water from the Lompoc Plain portion of the basin with average well depths of approximately 200 feet. Hydrologic information from a 1977 USGS report on the basin indicates that the Lompoc Upland portion of the sub basin extends under the Lompoc Plain sub basin and the City service area. Further analysis of the available information is needed to determine if it is feasible to drill deeper wells to provide the City with an additional source of water. Recycled Water Groundwater Recharge Utilizing the recycled water generated at the City s LRWRP for groundwater recharge upstream from the City s wells could provide additional water supply in the future. Further analysis of the groundwater basin using the City s updated groundwater model, will be needed in order to satisfy the regulatory requirements associated with the indirect potable reuse of recycled water. 6 7

38 City of Lompoc 2015 Urban Water Management Plan Final Final 7. Water Supply Reliability 7 WATER SUPPLY RELIABILITY 7.1 WATER SUPPLY RELIABILITY This section considers the City s water supply reliability during three climate related water scenarios: normal water year, single dry water year, and multiple dry water years. These scenarios are defined by DWR as follows: Normal Year: A year, or an averaged range of years, that most closely represents the median water supply available to the agency. Single Dry Year: The single dry year is the year that represents the lowest water supply available to the agency. Multiple Dry Years: The multiple dry years is the period that represents the lowest average water supply availability to the agency for a consecutive multiple year period (three years or more). Basis of Water Year Data Historical rainfall data available for the City was examined to establish the basis for normal, single dry, and multiple dry years. As shown in Table 7 1, for the purposes of this report, the year 1997 is classified as a normal year, the year 2007 is classified as a single dry year, and the years 2013 to 2015 are classified as multiple dry years. Supply Source Table 7 1. Basis of Water Year Data Average/ Normal Year (1) Single Dry Year (2) Multiple Dry Years (2) Groundwater (1) Normal year supplies are based on City Hall rainfall totals and groundwater production (2) Single and Multiple Dry values are based on City Hall rainfall totals Using this information, Table 7 2 shows the water deliveries during the normal, single dry and multiple dry years. 7 1

39 City of Lompoc 2015 Urban Water Management Plan Final Final 7. Water Supply Reliability Table 7 2. Historical Water Supply Conditions Supply Source Average/ Normal Year 1997 (1) Single Dry Year 2007 Multiple Dry Years (2) Groundwater 8,225 8,225 6,690 6,690 6,690 Supply (AFY) Total Demand 5,805 5,440 4,993 4,785 4,222 (AFY) Percent of Normal 94% 81% 78% 69% (1) Normal year supplies are based on the available yield calculated in Appendix H. (2) Multiple Dry values are based on the available yield calculated in Appendix H Projected Normal Year Supply/Demand The normal year water demands through 2035 are estimated based on the per capita water use targets summarized in Section 5 and populations presented in Section 3.3. The projected normal water year water supply and demand projections are provided in Table 7 3. The available supplies during a normal year are based on an analysis of well production records, static well levels and pump performance from 2011 through 2015, which is included in Appendix H. The projected water demand figures are calculated by multiplying projected population growth identified in Section 3 by the SB7 goal of 117 gpcd, discussed in Section 5. This is a conservative water consumption estimate considering that 2015 water production is at 91 gpcd. Table 7 3. Supply and Demand Normal Year, AFY Supply totals (1) 8,225 8,225 8,225 8,225 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 2,721 2,596 2,468 2,338 Difference as % of Supply 33% 32% 30% 28% Difference as % of Demand 49% 46% 43% 40% (1) Based on combined well production capabilities and pumping records from (2) Demand totals are calculated by multiplying projected population times 117 gpcd (the City s SB 7 water reduction goal) Projected Single Dry Year Supply/Demand The projected single dry year water demands through 2035 are equivalent to normal year demands, assuming that water supply and demands do not change as a result of one year of dry conditions. As shown in Table 7 4, the City s supplies are consistently above projected demands, even during single dry year conditions. 7 2

40 City of Lompoc 2015 Urban Water Management Plan Final Final 7. Water Supply Reliability Table 7 4. Supply and Demand Comparisons Single Dry Year, AFY Supply totals (1) 8,225 8,225 8,225 8,225 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 2,721 2,596 2,468 2,338 Difference as % of Supply Difference as % of Demand 33% 32% 30% 28% 49% 46% 43% 40% (1) Based on combined well production capabilities and pumping records from , Appendix H. (2) Demand totals are calculated by multiplying projected population times 117 gpcd (the City s SB 7 water reduction goal) Projected Multiple Dry Year Supply/Demand The projected multiple dry year water demands through 2035 are equivalent to normal year demands, assuming that water demands do not change as a result of dry conditions. The anticipated water supply decrease during multiple dry years, compared to a normal year, are based on well production records, static well levels and pump performance from 2011 through 2015 (Appendix H). As shown in Table 7 5, the City s supplies are consistently above projected demands even during multiple dry year conditions. Multiple dry year first year supply Multiple dry year second year supply Multiple dry year third year supply Table 7 5. Supply and Demand Comparison Multiple Dry Year Events, AFY Supply totals (1) 8,225 8,225 8,225 8,225 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 2,721 2,596 2,468 2,338 Difference as % of Supply 33% 32% 30% 28% Difference as % of Demand 49% 46% 43% 40% Supply totals (1) 6,690 6,690 6,690 6,690 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 1,186 1, Difference as % of Supply 18% 16% 14% 12% Difference as % of Demand 22% 19% 16% 14% Supply totals (1) 6,690 6,690 6,690 6,690 Demand totals (2) 5,504 5,629 5,757 5,887 Difference 1,186 1, Difference as % of Supply 18% 16% 14% 12% Difference as % of Demand 22% 19% 16% 14% (1) Based on combined well production capabilities and pumping records from , Appendix H. (2) Demand totals are calculated by multiplying projected population times 117 gpcd (the City s SB 7 water reduction goal) 7 3

41 City of Lompoc 2015 Urban Water Management Plan Final Final 7. Water Supply Reliability Resource Maximization and Import Minimization As stated in Section 6.1, the City s sole source of existing and planned water supply for the UWMP s planning horizon ( ) is groundwater. The City will maximize its groundwater supply by implementing operational strategies and demand management measures that will keep in balance the safe yield of the groundwater basin. This will eliminate any current or future need to import water into the City s service area. 7.2 FACTORS AFFECTING SUPPLY RELIABILITY Based on the analysis in Section 6.1, the Lompoc Groundwater Basin is in equilibrium and able to provide adequate supplies during extended periods of drought. The groundwater is also of high quality and meets or exceeds standards set by the State of California (Appendix G). Though the Basin is not in overdraft, future unknown climatic conditions, such as new worst case drought scenarios due to climate change, could affect the reliability and the water quality of the groundwater supplies in the future. Factors resulting in inconsistency of supply are summarized in Table 7 6. Table 7 6. Factors Resulting in Inconsistency of Supply Water Supply Sources Legal Environmental Groundwater Water Quality Climatic X Water Quality Factors The potential water quality factor affecting supply reliability for the City is an increase in the Total Dissolved Solids (TDS) within the groundwater basin during times of low flows that occur seasonally and during extended drought periods. According to the 2013 Groundwater Management Plan, the implementation of State Board Order has tended to cause a reduction in the groundwater TDS within the Lompoc Plain area of the basin. Long term impacts of extended drought resulting in reduced river flows will need to be monitored to establish the impacts on water quality. Climatic Factors Climatic factors affecting the reliability of a given water supply system generally are a function of seasonal precipitation and runoff characteristics. As such, limited recharge and/or drought conditions pose threats to availability of groundwater supplies. Despite the high level of attention both in California and internationally, there is very little information developed on the potential impacts of climate change on groundwater. The principal concern is rising sea level and potential salinity intrusion into coastal groundwater aquifers. While this is a concern for coastal areas of California, it is not a concern in the portion of Lompoc Groundwater Basin near the City. Groundwater levels have been stable and sufficiently elevated to prevent seawater intrusion. This condition is expected to continue provided there are no significant changes in Cachuma Project operations. 7 4

42 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning 8 WATER SHORTAGE CONTINGENCY PLANNING Water shortage contingency planning is a strategic planning process to prepare for and respond to water shortages. Good planning and preparation provides the City with the tools to maintain reliable supplies and reduce the impacts of supply interruptions due to extended drought or catastrophic supply interruptions. The Lompoc City Council adopted a four stage water shortage contingency plan in 1992, which consisted of mandatory water waste prohibitions in all four stages. The City requested voluntary water conservation for Stage 1 to achieve up to 15% reduction and mandatory reduction through block tiered pricing, and the use of the City s water conservation programs and strategies to achieve up to 30% reduction for Stage 2, up to 40% reduction for Stage 3, and up to 50% reduction for Stage 4. The City s water shortage contingency program was updated as part of the 2010 UWMP to include additional emergency equipment and procedures, that City staff would utilize in an emergency. The water shortage contingency program is again being modified as part of this UWMP to reflect the City s drought experiences during the calendar years of 2011 through Stages of Action and Reduction Objectives The City s water shortage plan describes four stages of water demand reductions that may be invoked during water supply shortages. Each stage includes a water reduction objective, conditions and percent of normal water demands, which may vary based on the nature of water supply emergency. The plan is dependent on the cause, severity, and anticipated duration of the water supply shortage. A combination of water conservation measures would be used to reduce water usage in the event of water shortages. Table 8 1 shows the four stages and their representative shortages. Declarations of water supply conditions will occur periodically after evaluation by City staff and the approval by City Council. The respective water supply condition dictates the degree at which water conservation measures are implemented at any particular time in the City. 8 1

43 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning Table 8 1 Water Shortage Contingency Rationing Stages Stage Condition Reduction Objective I Threatened Water Supply Condition II Moderately Restricted Water Supply Conditions III Severely Restricted Water Supply Conditions IV Critical Water Supply Conditions GPCD greater than 117 (SB 7 Baseline Target) Mandatory 15% reduction Rainfall below the mean average for 2 consecutive years Consistent drop in static well levels for 12 consecutive months with no Cachuma Reservoir Dam release expected that year. 75% of the active wells have Variable Frequency Drive (VFD) running restrictions, and more than 1 well is unable to pump water under normal conditions % mandatory reduction in total water demands from baseline 30 40% mandatory reduction in total water demands from baseline Up to 50% mandatory reduction in total water demands from baseline The City is responsible for supplying water for the health and safety needs of the community. If it appears that the City may be unable to supply the normal demands and requirements of the water customers, the City Council may declare a water supply shortage condition. Based on the severity of the predicted shortage, the City could take the following actions as described in the following sections. Mandatory Prohibitions on Water Wasting In the event of a water supply shortage, the City may implement mandatory compliance measures to induce water conservation. The City s Municipal Code includes prohibition on various wasteful water uses during a declared water supply shortage. These mandatory prohibitions are implemented during Stages I, II, III and IV, and are listed in Table 8 2. Additionally, during a Stage IV water supply shortage, the City Council may impose any water rationing requirement that it deems appropriate to protect public health, safety, welfare, comfort, and convenience. 8 2

44 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning Table 8 2. Water Shortage Contingency Mandatory Prohibitions Prohibitions Outdoor irrigation resulting in excessive gutter runoff. Allowing potable water to escape from breaks within a customer s plumbing system Use of water for cleaning driveways, patios, parking lots, sidewalks, streets, or other such uses except as necessary to protect public health or safety. Outdoor irrigation between the hours of 10 AM and 4 PM. Use of potable water for compaction or dust control purposes in construction activities. Washing cars with a hose without a shutoff nozzle Serving water to guests at a restaurant unless requested Limited days for outdoor irrigation Overhead spray irrigation restriction (to be determined by the City Council) Mandatory Prohibition Stage Stage I, II, III, IV Stage I, II, III, IV Stage I, II, III, IV Stage I, II, III, IV Stage I, II, III, IV Stage I, II, III, IV Stage I, II, III, IV Stage II, III, IV Stage IV Penalties Violation of the prohibitions are an infraction with a warning given for the first violation; a fine not exceeding $50.00 for a second violation within one year; a fine not exceeding $ for a third violation within one year; and a fine not exceeding $ for each additional violation within one year. The Utilities Director may shut off the water service to any property where a violation of this Section occurs and the City s usual reconnection charge will be applied upon resumption of service. Mechanism for Determining Water Use Reductions Under normal water supply conditions, potable water production figures are recorded daily at the Water Treatment Facility. Totals are reported monthly to the Utilities Director. From this information, month to month and year to year statistics can be calculated to track water use and subsequent increases or reductions in consumption levels. This data allows the City to determine the effectiveness of the implemented DMM s. If reduction goals are not being met, the Council can make the necessary decisions for corrective action to be taken. Since the City has daily production records available during a drought or other water emergency, more frequent reporting could be provided. Revenue and Expenditure Impacts The majority of operating costs for most water agencies are fixed rather than a function of the amount of water sold. As a result, when significant conservation programs are undertaken, it is frequently necessary to raise water rates because the revenue generated is based on lower total consumption while the revenue required is basically fixed. In order to counteract the financial impact of conservation, the City may institute an increase in the rate structure so that lower projected water consumption would generate added revenue needed by the City s Water Enterprise fund. Another option would be the use of reserves to minimize the need for additional rate increases. A full analysis of the water rates based on the financial conditions at the time water reduction would occur would be presented to the City Council for their approval. 8 3

45 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning Actions during a Catastrophic Interruption Water shortage disaster response is coordinated between the City of Lompoc Fire Department and the Utilities Department. The City has mutual aid agreements with Vandenberg AFB, Santa Barbara County, and provisions for assistance from state utilities through its membership in the California Utilities Emergency Association (CUEA). The City s membership in CUEA provides a network of State of California water utilities that can offer assistance to the City of Lompoc in an emergency. The City is also a member of the Public Works Mutual Aid Agreement, which provides for borrowing personnel and equipment from member agencies in Santa Barbara County and Southern California. The Water Division also has a Disaster/Emergency Response Plan. The Plan addresses the Water Division s response to extraordinary emergency situations associated with natural disasters, technological and catastrophic events, which cause widespread damage, loss, or destruction. The Plan provides operational concepts relating to the various emergency situations, identifies components of the Emergency Management Organization, and describes the overall responsibilities of the organization for protecting life and property, and assuring the overall well being of the population. This Plan also identifies the sources of outside support that might be provided. The Plan details the Division s response, personnel, and assistance, which will be provided during a disaster and emergency. The City provides emergency power for total treatment at the Water Treatment Plant, through a 1000kW generator. Switchgear and four 200kW portable generators are provided to operate four wells. Two wells will supply approximately 3.5 MGD during extended power shortages. Additional generators can and will be acquired if necessary for a prolonged crisis. If a City emergency resulted in several fires within the City, the following could occur: 1. Alert City residents to conserve water due to the local emergency by use of local and regional media. 2. Use existing City fire trucks and if necessary request additional fire trucks from Santa Barbara County, Vandenberg AFB, and Southern California cities. This assistance would depend on the availability of personnel and equipment in the agencies. 3. If necessary, use local tank trucks to bring water into the City through a mutual aid agreement. 4. Pump non potable water out of the Lompoc Regional Wastewater Reclamation Treatment Plant, the Pacific Ocean, River Park Lake and the Santa Ynez River, if additional water was available and needed for firefighting. 5. Demolish the buildings, if a major disaster occurred and there was insufficient water to fight fires. 8 4

46 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning If the City experienced an emergency due to an earthquake, the following would occur: 1. City staff would begin by checking the Water Treatment Plant to find out if the Plant was operational. 2. If the Water Treatment Plant was operational, City staff would next check the entire water distribution system to find out if it was operational. This would include an inspection of all of the water system components, such as water mains, water service lines and the City s four water reservoirs. City staff would also survey the water distribution system to determine if anything needed to be repaired and prioritize these repairs. Three of the City s reservoirs (Avalon, O Street, and Miguelito) are equipped with seismic valves, which will secure the reservoirs in event of a major earthquake. The Beattie Reservoir does not have seismic valves; however, the City of Lompoc Water Treatment Plant has an automated control valve to secure the reservoir. 3. City staff would also alert City residents to conserve water due to the earthquake. If the local and regional media were not operational, City staff would drive down the City streets and hand out flyers and/or use a public address system in City vehicles, if available, to notify residents that they should conserve water. 4. City staff could also request assistance, if needed and available from Vandenberg AFB, Santa Barbara County and Southern California cities. 5. If City staff found that the Water Treatment Plant was damaged or was no longer standing, then City staff would determine how much water was left in the City reservoirs. The water from the reservoirs could be distributed by gravity feeding it into the distribution system, because all of the reservoirs are located on a hill in the City. This works if electrical power is not available. 6. If the Water Treatment Plant was operational, then the City could use four generators at the four highest producing wells. These four wells could supply 5 MGD during extended electric power shortages. The City would also need a source of fuel for the generators. As City customers conserved water, the City could supply City customers needs with a supply of 3 MGD of water. 7. If the City was no longer able to secure fuel for the generators and supply City water to the customers, then the City would need to secure tanker trucks to supply water to the City residents. The City may also need to issue boiled water alerts. Additionally, the City may have to secure bottled water and provide a distribution site for customers to secure the water. 8. City staff could also request assistance from Vandenberg AFB, Santa Barbara County and Southern California cities. This assistance would depend on the availability of personnel and equipment in the agencies. 8 5

47 City of Lompoc 2015 Urban Water Management Plan Final Final 8. Water Shortage Contingency Planning Projected Three Year Minimum Supply The minimum supply for the City is equal to the driest three year historic sequence in the history of City s water production and deliveries. The three driest years on record are 2013 through Table 8 3 shows the projected three year minimum water supplies for the City based on water production capacity (Appendix H) and the water deliveries from the 2013 through 2015 time period. Table 8 3 City s Projected Three year Minimum Water Supplies, AFY Source Groundwater Supply 6,690 6,690 6,690 Groundwater Demand 4,993 4,785 4,222 Note: Demand numbers from water delivery data; actual production capacity is estimated at 6,690 AF/yr. (Appendix H) 8 6

48 City of Lompoc 2015 Urban Water Management Plan Final Final 9. Demand Management Measures 9 DEMAND MANAGEMENT MEASURES The Demand Management Measures (DMM) section provides a comprehensive description of the water conservation programs that the City has implemented for the past five years, is currently implementing, and plans to implement in order to meet the 2020 urban water use reduction targets. The section of the CWC addressing DMMs was significantly modified in 2014, based on recommendations from the Independent Technical Panel (ITP) to the legislature. The ITP was formed by DWR to provide information and recommendations to DWR and the Legislature on new DMMs, technologies and approaches to water use efficiency. The ITP recommended, and the legislature enacted, streamlining the requirements from the 14 specific measures reported on in the 2010 UWMP to six more general requirements plus an other category for measures agencies implemented in addition to the required elements. The required measures are summarized in Table 9 1. Table 9 1. Demand Management Measures Measure 1 Water waste prevention ordinances 2 Metering 3 Conservation pricing 4 Public education and outreach 5 Programs to assess and manage distribution system real loss 6 Water conservation program coordination and staffing 7 Other demand management measures Consistent with the requirements of the California Water Code (CWC), this section describes the demand measurement measures that have been implemented in the past five years and will continue to be implemented into the future in order to meet the City s 2020 water use targets pursuant to Section of the CWC. Table 9 5 summarizes the program activities for the past five years. 9.1 DEMAND MANAGEMENT MEASURES DMM Water Waste Prevention According to the DWR 2015 UWMP Guidebook, a water waste ordinance explicitly states the waste of water is to be prohibited. The ordinance may prohibit specific actions that waste water, such as excessive runoff from landscape irrigation, or use of a hose outdoors without a shut off nozzle. Chapter of the City s Municipal Code lists the prohibited uses of water supplied by the City and defines water waste. The prohibited uses include: 1. The application of potable water to outdoor landscapes between the hours of 10:00 a.m. and 4:00 p.m., on days other than Wednesday and Saturday, or in such a manner that causes runoff such that water flows onto adjacent property, non irrigated areas, private and public walkways, roadways, parking lots, or structures; 9 1

49 City of Lompoc 2015 Urban Water Management Plan Final Final 9. Demand Management Measures 2. The use of potable water to wash sidewalks, walkways, driveways, parking lots, open ground or other hard surfaced areas by direct application, except that flammable or other similar dangerous substances may be washed from said areas by direct hose flushing for the benefit of public health and safety, and provided further that the prohibition in this Subsection shall not apply to commercial steam cleaning; 3. Allowing potable water to escape from breaks within the customer s plumbing system for more than eight hours after the customer is notified or discovers the break; 4. Washing a vehicle with a hose without positive shutoff nozzle; 5. Serving water to guests at restaurants when the guests have not requested water; 6. Using potable water for dust control at construction sites, except as may be authorized by the Utilities Director. Contractors and developers shall make arrangements to use treated wastewater from the wastewater treatment plant for dust control purposes, upon such terms and conditions as determined by the Utility Director. Recycled water is currently unavailable; however, once all permitting requirements are fulfilled to fully utilize this water, the City will implement this provision of the Municipal Code. DMM Metering According to the DWR 2015 UWMP Guidebook, an agency that is fully metered will state that fact in the UWMP. If an agency is not yet full metered, it will discuss its plans for becoming fully metered in accordance with CWC 527. All water connections served by City water are currently metered. DMM Conservation Pricing According to the DWR 2015 UWMP Guidebook, retail water agencies need to describe the pricing structure that is used by the water agency. Conservation pricing is designed to discourage wasteful water habits and encourage conservation. The City applies a three tier rate structures to the single family residential customer class, which accounts for 80% of the customer base. Rates based on volume of use encourage water conservation by customers. The City applies a uniform rate structure to the remaining customer classes: multi family residential, commercial, institutional/landscape, and industrial. Table 9 2 is the water monthly base rate and tiered consumption rates for a standard ⅝ and ¾ singlefamily meter with a unit defined as 100 cubic feet (748 gallons). Table 9 3 shows the water rates for the other customer classes, while Table 9-4 shows the base fees based on the size of the meter. Table 9 2. Single Family Conservation Pricing Rate Structure Units Rate Base Fee ⅝ $36.06 ¾ $ HCF $ HCF $ HCF $

50 City of Lompoc 2015 Urban Water Management Plan Final Final 9. Demand Management Measures Table 9 3. Multi family and CII Water Rates Customer Class Rate (uniform) Multi family $4.33 Commercial $4.45 Institutional/Landscape $4.80 Industrial $4.33 Table 9 4. Base Fees for Meter Size Meter Size Base Fee ⅝ $36.06 ¾ $ $ $ $ $ $ $1, $1, $2, DMM Public Information Programs The City began the Public Information Program in The City's public information program for water conservation is targeted to all sectors of the community. The City also distributes public information through conservation messages on utility bills, brochures, advertisements, presentations to the community, and special events throughout the year. Additionally, City utility bills list current monthly and the previous year s monthly water usage. Annually, the City provides funding to the Santa Barbara County Water Agency Regional Water Efficiency Program for joint member conservation programs such as rebates for landscape conversions, water conservation training, and school education programs. Funding is also provided for public outreach activities throughout the County of Santa Barbara, such as radio, television and print advertisements about water conservation. The City also provides: Tours of the wastewater and water departments to schools and the public. A Water Awareness Art contest held annually for Grades K 6. Classroom presentations upon request. Free restaurant and hotel water conservation placards to help promote water conservation. DMM Water Loss Control The City of Lompoc has 135 miles of water mains in its underground water distribution system. The City's distribution maintenance program includes record keeping, valve exercise, hydrant inspection and exercise, and leak repair. 9 3

51 City of Lompoc 2015 Urban Water Management Plan Final Final 9. Demand Management Measures The City has a meter maintenance program to replace old meters and to identify and replace broken, stopped, and inaccurate meters. The City replaced approximately 97 percent of the mechanical water meters with automated meter reading (AMR) meters by December 31, The remaining meters, with the exception of the fire line water meters, were replaced with AMR meters in April The AMR meters have improved water accountability and revenue with their increased accuracy. The water meters will soon be read with a fixed based Wi Fi network. The City completed a leak detection survey of its water distribution system in calendar year 2012, through a Proposition 84 leak detection grant. Additionally, The City completed the AWWA System Water Loss spreadsheet for the calendar year 2015 and will continue to update the spreadsheet on an annual basis. DMM Conservation Coordinator and Staffing Support The conservation program is supported by a Utility Conservation Coordinator, which splits time between water and energy conservation programs. Additionally, the Customer Service Workers assist by identifying customers with high water meter reads, leaks and other circumstances, which are conveyed to the Utility Conservation Coordinator for follow up. 9.2 OTHER DEMAND MANAGEMENT MEASURES The City is committed to implementing cost effective programs that will increase water efficiency Citywide. Though not required, the City has implemented the following demand management measures during the past five years and will continue implementation into the future in order to increase the overall water efficiency of the City s customers. The following is a brief description of each program. Water Audits The City's Utility Conservation Coordinator, has been performing free indoor and outdoor audits since 1987 on residential and commercial properties; which have high water utility bills, which suspect a leak on their premises, or which request an audit. During an indoor audit, the Conservation Coordinator reviews water fixtures and provides information on available rebates and conservation tips when applicable. During an outdoor audit, the Conservation Coordinator reviews irrigation methods used for landscaped areas and provides information on available rebates, and offers conservation tips when applicable. Water Retrofit Program The City provides a rebate of up to $103 for the purchase and installation of a Water Sense certified high efficiency toilet (1.28 gallons per flush or less) that replaces a less efficient toilet (using more than 1.6 gallons per flush). The City also provides a rebate up to $50 towards the installation costs if installed by a licensed plumber or contractor with a City of Lompoc business license. Only approved toilets qualify for a rebate. Additionally, free showerheads and aerators are available to customers wanting to retrofit older fixtures. 9 4

52 City of Lompoc 2015 Urban Water Management Plan Final Final 9. Demand Management Measures Landscape Rebate Program A rebate of up to $1,000 is available to customers to replace turf with landscapes that require little water. High Efficiency Clothes Washer Programs A $120 rebate is available for the replacement of a working, non Energy Star certified clothes washer with new Energy Star certified clothes washer. For utility customers who qualify for the City s Electric Rate Assistance Program, the City provides $600 to assist in the purchase a new Energy Star certified clothes washer from a participating appliance dealer to replace an old inefficient clothes washer. The old clothes washer is required to be taken out of service and recycled at the City of Lompoc Landfill. Dishwasher Rebate Program A $50 rebate is available for the replacement of a working, pre 2010 dishwasher, that is not Energy Star certified with a new Energy Star certified dishwasher. The old dishwasher is required to be taken out of service and recycled at the City of Lompoc Landfill. Rain Barrel Rebate Program A rebate of up to $50 is available for the purchase of a rain barrel with limit of 4 barrels per customer. Leak Detection Program The City has established an incentive to help customers that have a leak on their property. The City will, at no cost, contract with a leak detection company to help find the leak. The City does not provide a service to perform the repair once the leak is found. Participation in all of the water conservation programs from 2011 through 2015 is shown in Table 9 5. Year Clothes Washer Rebates Table 9 5. Participation in Water Conservation Programs Dishwasher Rebates Landscape Rebate Leak Detection Rain Barrel Rebates Toilets Water Audits Total

53 City of Lompoc 2015 Urban Water Management Plan Final Appendix A. DWR Checklist APPENDIX A. DWR CHECKLIST A

54 TABLE F2 Checklist Arranged by Subject CWC Section UWMP Location (Optional Column for Agency Use) Plan Preparation Section 2.1 Section 2.0 UWMP Requirement Subject Guidebook Location 10620(b) Every person that becomes an urban water supplier shall adopt an urban water management plan within one year after it has become an urban water supplier (d)(2) Coordinate the preparation of its plan with other appropriate agencies in the area, including other water suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable Provide supporting documentation that the water supplier has encouraged active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan (a) Describe the water supplier service area. System Description 10631(a) Describe the climate of the service area of the supplier (a) Provide population projections for 2020, 2025, 2030, and (a) Describe other demographic factors affecting the supplier s water management planning (a) Indicate the current population of the service area (e)(1) 10631(e)(3)(A) (a) (b) Quantify past, current, and projected water use, identifying the uses among water use sectors. Report the distribution system water loss for the most recent 12-month period available. Include projected water use needed for lower income housing projected in the service area of the supplier. Retail suppliers shall adopt a 2020 water use target using one of four methods. Plan Preparation Section Section 2.1 Plan Preparation Section Section 2.2 System Description System Description System Description System Description and Baselines and Targets System Water Use System Water Use System Water Use Baselines and Targets Section 3.1 Section 3.1 Section 3.3 Section 3.2 Section 3.4 Section 3.3 Section 3.4 Section 3.4 Sections 3.4 and 5.4 Section 3.3 Section 4.2 Section 4.1 Section 4.3 Section Section 4.5 Section Section 5.7 and App E Section 5.4

55 (e) Retail suppliers shall provide baseline daily per capita water use, urban water use target, interim urban water use target, and compliance daily per capita water use, along with the basis for determining those estimates, including references to supporting data Retail suppliers per capita daily water use reduction shall be no less than 5 percent of base daily per capita water use of the 5 year baseline. This does not apply is the suppliers base GPCD is at or below (a) Retail suppliers shall meet their interim target by December 31, (d)(2) If the retail supplier adjusts its compliance GPCD using weather normalization, economic adjustment, or extraordinary events, it shall provide the basis for, and data supporting the adjustment Wholesale suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their retail water suppliers achieve targeted water use reductions Retail suppliers shall report on their progress in meeting their water use targets. The data shall be reported using a standardized form (b) Identify and quantify the existing and planned sources of water available for 2015, 2020, 2025, 2030, and (b) Indicate whether groundwater is an existing or planned source of water available to the supplier (b)(1) Indicate whether a groundwater management plan has been adopted by the water supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization. Baselines and Targets Baselines and Targets Baselines and Targets Baselines and Targets Baselines and Targets Baselines and Targets Chapter 5 and App E Section 5 Section Section 5.3 Section 5.8 and App E Section Section 5.1 Section 5.8 and App E Section 5.4 Not applicable Not Applicable Section 42.2/5.4 System Supplies Chapter 6 Section 6.2 System Supplies Section 6.2 Section 6.2 System Supplies Section Section (b)(2) Describe the groundwater basin. System Supplies Section Section (b)(2) Indicate if the basin has been adjudicated System Supplies Section Section 6.2 and include a copy of the court order or decree and a description of the amount of water the supplier has the legal right to pump (b)(2) For unadjudicated basins, indicate whether or not the department has identified the basin as overdrafted, or projected to become overdrafted. Describe efforts by the supplier to eliminate the long-term overdraft condition. System Supplies Section Section 6.2.1

56 10631(b)(3) 10631(b)(4) 10631(d) 10631(g) 10631(i) 10631(j) 10631(j) Provide a detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years Provide a detailed description and analysis of the amount and location of groundwater that is projected to be pumped. Describe the opportunities for exchanges or transfers of water on a short-term or longterm basis. Describe the expected future water supply projects and programs that may be undertaken by the water supplier to address water supply reliability in average, single-dry, and multiple-dry years. Describe desalinated water project opportunities for long-term supply. Retail suppliers will include documentation that they have provided their wholesale supplier(s) if any - with water use projections from that source. Wholesale suppliers will include documentation that they have provided their urban water suppliers with identification and quantification of the existing and planned sources of water available from the wholesale to the urban supplier during various water year types For wastewater and recycled water, coordinate with local water, wastewater, groundwater, and planning agencies that operate within the supplier's service area (a) Describe the wastewater collection and treatment systems in the supplier's service area. Include quantification of the amount of wastewater collected and treated and the methods of wastewater disposal (b) Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project (c) Describe the recycled water currently being used in the supplier's service area (d) Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic feasibility of those uses. System Supplies Section Section System Supplies Sections 6.2 and 6.9 Section System Supplies Section 6.7 Section 6.3 System Supplies Section 6.8 Section 6.6 System Supplies Section 6.6 Section 6.4 System Supplies Section Not applicable System Supplies Section Not applicable System Supplies (Recycled Water) System Supplies (Recycled Water) System Supplies (Recycled Water) System Supplies (Recycled Water) System Supplies (Recycled Water) Section Section Section Section Section Section and Section Section Section Section 6.5.4

57 10633(e) 10633(f) 10633(g) 10620(f) 10631(c)(1) 10631(c)(1) 10631(c)(2) Describe the projected use of recycled water within the supplier's service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected. Describe the actions which may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year. Provide a plan for optimizing the use of recycled water in the supplier's service area. Describe water management tools and options to maximize resources and minimize the need to import water from other regions. Describe the reliability of the water supply and vulnerability to seasonal or climatic shortage. Provide data for an average water year, a single dry water year, and multiple dry water years For any water source that may not be available at a consistent level of use, describe plans to supplement or replace that source Provide information on the quality of existing sources of water available to the supplier and the manner in which water quality affects water management strategies and supply reliability 10635(a) Assess the water supply reliability during normal, dry, and multiple dry water years by comparing the total water supply sources available to the water supplier with the total projected water use over the next 20 years (a) and 10632(a)(1) 10632(a)(2) 10632(a)(3) 10632(a)(4) Provide an urban water shortage contingency analysis that specifies stages of action and an outline of specific water supply conditions at each stage. Provide an estimate of the minimum water supply available during each of the next three water years based on the driest threeyear historic sequence for the agency. Identify actions to be undertaken by the urban water supplier in case of a catastrophic interruption of water supplies. Identify mandatory prohibitions against specific water use practices during water shortages. System Supplies (Recycled Water) System Supplies (Recycled Water) System Supplies (Recycled Water) Water Supply Reliability Assessment Water Supply Reliability Assessment Water Supply Reliability Assessment Water Supply Reliability Assessment Water Supply Reliability Assessment Water Supply Reliability Assessment Water Shortage Contingency Planning Water Shortage Contingency Planning Water Shortage Contingency Planning Water Shortage Contingency Planning Section Section Section Section Section Section Section 7.4 Section Section 7.1 Section 7.2 Section 7.2 Section 7.1 Section 7.1 Section 7.2 Section 7.1 Section 7.2 Section 7.3 Section 7.1 Section 8.1 Section 8 Section 8.9 Section Section 8.8 Section Section 8.2 Section 8.1.2

58 10632(a)(5) 10632(a)(6) 10632(a)(7) 10632(a)(8) 10632(a)(9) 10631(f)(1) 10631(f)(2) Specify consumption reduction methods in the most restrictive stages. Indicated penalties or charges for excessive use, where applicable. Provide an analysis of the impacts of each of the actions and conditions in the water shortage contingency analysis on the revenues and expenditures of the urban water supplier, and proposed measures to overcome those impacts. Provide a draft water shortage contingency resolution or ordinance. Indicate a mechanism for determining actual reductions in water use pursuant to the water shortage contingency analysis. Retail suppliers shall provide a description of the nature and extent of each demand management measure implemented over the past five years. The description will address specific measures listed in code. Wholesale suppliers shall describe specific demand management measures listed in code, their distribution system asset management program, and supplier assistance program (j) CUWCC members may submit their CUWCC BMP annual reports in lieu of, or in addition to, describing the DMM implementation in their UWMPs. This option is only allowable if the supplier has been found to be in full compliance with the CUWCC MOU (a) Retail suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (b) Notify, at least 60 days prior to the public hearing, any city or county within which the supplier provides water that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan (d) Each urban water supplier shall update and submit its 2015 plan to the department by July 1, Water Shortage Contingency Planning Water Shortage Contingency Planning Water Shortage Contingency Planning Water Shortage Contingency Planning Water Shortage Contingency Planning Demand Management Measures Demand Management Measures Demand Management Measures Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Section 8.4 Section 8.1.2/8.1.3 Section 8.3 Section Section 8.6 Section Section 8.7 Appendix E Section 8.5 Section Sections 9.2 and 9.3 Sections 9.1 and 9.3 Section 9.5 Section 9.1 Not applicable Not Applicable Section 10.3 Section 2.2 Section Section 2.2 Sections and 10.4 Section 2.2

59 10635(b) Provide supporting documentation that Water Shortage Contingency Plan has been, or will be, provided to any city or county within which it provides water, no later than 60 days after the submission of the plan to DWR Provide supporting documentation that the urban water supplier made the plan available for public inspection, published notice of the public hearing, and held a public hearing about the plan The water supplier is to provide the time and place of the hearing to any city or county within which the supplier provides water Provide supporting documentation that the plan has been adopted as prepared or modified (a) Provide supporting documentation that the urban water supplier has submitted this UWMP to the California State Library (a)(1) Provide supporting documentation that the urban water supplier has submitted this UWMP to any city or county within which the supplier provides water no later than 30 days after adoption (a)(2) The plan, or amendments to the plan, submitted to the department shall be submitted electronically Provide supporting documentation that, not later than 30 days after filing a copy of its plan with the department, the supplier has or will make the plan available for public review during normal business hours. Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Plan Adoption, Submittal, and Implementation Section Not applicable Sections , 10.3, and 10.5 Sections Section 2.2 Section 2.1 Section Section 2.2 Section Section 2.2 Section Section 2.2 Sections Section and Section 10.5 Section 2.2

60 City of Lompoc 2015 Urban Water Management Plan Final Appendix B. Notification and Outreach APPENDIX B. NOTIFICATION AND OUTREACH B

61 I t P,ROOF CF PUBLICATIO};I i2t-t 15.!.J.c.F.) STr'"TE OF CALIFORIIIA. CITY OF I,OMPOC loo CTVIC CENTER PI,/\ZA T,OMPOC, CA REFERENCE: I,OMPOC RECORD I AM THE PRINCIPAL CLERI{ OF THE PRINTER OF THE LOMP(]C RtrCORD, NEV,ISPAPER OF GENERAI' CIRCULATION, PRTNTED AND PIJBLIS}IED IN THE CITY OF LOMPOC, COIIN1IY OF SANTA BARBAFA, AND WHTCH bieivspaper I{AS BEEN A]]JI]DGED A IdEWSPAPEF" OF GEITERAL CfRCULATION BY THE SUFERI()R COURT OF THE COU}ITY OF SANTA BARBARA, STATE C)F, CALIFORMA, A-DJUDICATION # THAT THE NOTICE OF M.IICII THE A.NNE}IED IS A }TRII{TED COPY (SI]T IN TYPE NOT SMALLEI? 'IT{AT }]CNPAREIL), HAS BEEN PI]BLISHED IN EACH REGULAR AND ENTIRE ISSUE OF SA]D NEWSPAPER -ShID NOT :[N A}IY SUPPLEMENT THEREOF OI{ THE FOLLOWI}]G DATtrS, TO-WlIt: I CERTIFY (OR DECLARE) LINDER PEhTALTY OF PER;TLTRE T}IAT-THE FOREGOING IS TRUE AND CORRECT. publrshed ON: 05/ , 0(./0s/:016 'IOTAL AD COST: $184 '82 FTLED ON: NATED AT SA,}[TA }IARI}., CA, 'IHIS z0tli DAY OF JLINE, 2016 NOTICE OF PUBLIC HEARING NOTICE IS HEhEBY GIVEN that the Lornpoc City Council will hold a Public Hearing on Tuesday, June 21, 2016 at 6:30 p.m., or as soon thereafter as convenient, in the Council Ctramber at City Hall, 100 Civic Center Plaza, Lompoc, California, to consider: The adoption of the''2015 Urban Water Manaqement Plan (UWMP); The repeal of Resolution No. 5728(11\, cgncerning the current Water Shortage Contingency Plan and the adoption of a new Water Shortage Contingency Plan; and The repeal of drdinance No. 1316(90), concerning 1.6 gallons per flush toilets and 1.0 gallon per flush urinals. The City is governed by the California Plumbing Code ahd the California Green Buildlng Standards Code. As of January 1, 2014, these codes requlred all new development to have 1.28 gallons per flush toilets and{.5 gallon per flush urinals. The City has been implementing the new requiremenls. The Citv's 2015 UWMP was oreoared'in accordance with the ijrban Water Management Planning Act (Act). The Act is defired by Calilornia Code, Division 6, Part 2.6, and Sections through The Act requires every urban water supplier that provides water lor municipal purposes to more than 3,000 connections or supplies more than 3,000 acre{eet of water annually. to adopt and submit a plan every five years to the California Department ol Water Resources (DWR). The City has over 10,000 connections and supplied acre-feet of water to its customers in calendar Year The Citv's 2015 UWMP serves as a long-range planning document lor watbr s-upply and- r includes the followino sections: introduction and overvieil; plan preparation; system description; baseline and targets: svstem supplies, water supp Y reliability; water shortage contingency plan: and demand,management measures (water conservation measures). " All interested parties may submit comments orally or in writing at the Public Hearing. Written comments should be addressed to the CitY Clerk, City of Lompoc, 100 Civic Center Plaza, Lompoc. California Legal #83242 Pub date: May 29 & Jun 5, D! O/ (O.'n'ta-Zg a, STGTATURE.'"

62 rl l:l :j PltDilF fi F Pi-.lB[.Xfii\Tlmh] (2il il5 5 fi C"p' ) IBTA I"E OF {IA[-I FilRhIIA LMMPDfr REili}RM CITY OF LOMPOC 1fiCI f,ivic CENTEM PLAZA L0Mr0c, ca ORDEIC NUMBMR fi3?42 I&M THE PM {fiipf"l C[.ERl{ OF THE PRIMTER *"** LfiMPOC RECORD, hiewsfaper OF GEI\,IERAL CIRCULATION, PRINTED AND PUBLISHED IT{ T[.IE CITY OF LOMPOC, COUI{TY OT $AI{TA BAMMAMA, AND WHICH I',IEW$PAPER I-IA$ BIEI'I A.DJUDGED A t\ile}ii$paper OF 6EhJTR&.1CIftCULATDhJ tsy THE SI.JPTIqIOTq COURT OF THE COUT{TY OF SAFNTA MAREARA, STATE MF CATIFORT{IA,,i\DJ u Dl C&TI () N *r,$7{)ffi 5. NOTICE OF PUBLIC HEARING rubrrce rs HEREBy GrvEN thar the Lompoc City Council wilt hold a Public Hearinq on Tuesday. June 21, 2016 at 6:30 p.m., or 6s soon thereafter as convenient, in the Council Chamber at City.Hatl, 100' Civic Center Plaza,. Loirooc.'California. to consider' The adoption of thee2o15 Urban Water Management Plan (UWMp); The refeal of Resolution No. 5728(11\. concerninq the current Water Shortage Conlingency plarl and the adoption of a new Water Shonage Contingency plan; and Tl"'{l\T -l""[-l[ I{flTtOE OF Wl-llCH ThNE A['\lNf](Em l$ A printed COPY (EHT ilf,,jt\fp[: NmT $tulatler TI-IAT NONPAREIL), H,&S BEEhI PIJMI-ISI{EM IN TACH REGULAR ANM ENTIRE ISSLIE OF SAlm NEUliffiP,e,PER,&ND f,,lot ln ANY $UPPLEMENT Th'lEmEOF mn TFNE FOLLDWIIilG D,ATES, TO-WNT: I CrmTlrY (oru DECLAF{E} r..}t'{derq pehi,e\ltlr mf PERJURE l-t-.t,&t ]'t-tm FoREG(]thtff t$ Tmur &FJm fionmffict PUELISHED Ohf: 05/28/20'l 6. 06/fi5/201 6 The City's 2015 UWMP was prepared in accordance with the Urban Water Management planning Act.(Act). Irq nci is defined b! California Code, Division 6, part 2.6, and Sections through The Act requires every urban water supplier that providel water for municipal purpbses to more than 3,000 connections or supplies more than 3,000 acre{eet of water annually, to adopt and submit a plan every five vilars to the Califorhia Department of Water Flesources (DWH). The City has over connections and supplied 3,998 acre-feet of water to iis customers in calendar year 20i S. T(]TAL AD COST: FlLED 0ltl: 175.$4 6/Sl?fi16 The City's 2015 UWMP serves as a long-range planning document for water supply and includes the following sections: introductioa and overview: plan preparation; svstem description; bas line and targets; sy.stem. supplies,, water supply reliability: water shortage coniingency plan: and demand mariagement measures (water conservation measures)- DP.TEM AT?ffi lb $IffI{I\TURH,4/\ SAhI.IA T;IAI?IA, CA TI dis ta Dd\''tr 0F S-ng- Ali interested parties may subrnit comments orally or tn writino at the Public Hearing. Written co;rments should be addressed to the City Clerk, City of Lompoc, 100 Civi6 Center Plaza, Lonipoc, California Legal tt83242 Pub date: May 29 & Jun S, 2016

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67 City of Lompoc 2015 Urban Water Management Plan Final Appendix C. Resolution of Adoption APPENDIX C. RESOLUTION OF ADOPTION C

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71 City of Lompoc 2015 Urban Water Management Plan Final Appendix D. AWWA Water Loss Audit APPENDIX D. AWWA WATER LOSS AUDIT D

72 AWWA Free Water Audit Software: Reporting Worksheet WAS v5.0 American Water Works Association.? Click to access definition + Click to add a comment Water Audit Report for: City of Lompoc/ Water Division ( ) Reporting Year: / /2015 Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades All volumes to be entered as: ACRE-FEET PER YEAR To select the correct data grading for each input, determine the highest grade where Master Meter and Supply Error Adjustments WATER SUPPLIED < Enter grading in column 'E' and 'J' > Pcnt: Value: Volume from own sources: +? 9 4, acre-ft/yr +? % acre-ft/yr Water imported: +? n/a acre-ft/yr +? 0.50% acre-ft/yr Water exported: n/a acre-ft/yr +? acre-ft/yr AUTHORIZED CONSUMPTION Enter negative % or value for under-registration WATER SUPPLIED: 4, acre-ft/yr Enter positive % or value for over-registration. Click here:? Billed metered: +? 10 3, acre-ft/yr for help using option Billed unmetered: +? acre-ft/yr buttons below Unbilled metered: +? acre-ft/yr Pcnt: Value: Unbilled unmetered: +? acre-ft/yr 1.25% acre-ft/yr Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed AUTHORIZED CONSUMPTION: WATER LOSSES (Water Supplied - Authorized Consumption) +?? 4, acre-ft/yr acre-ft/yr Use buttons to select percentage of water supplied OR value Apparent Losses Pcnt: Value: Unauthorized consumption: +? acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: +? acre-ft/yr acre-ft/yr Systematic data handling errors: +? acre-ft/yr 0.25% acre-ft/yr Apparent Losses:? acre-ft/yr Real Losses (Current Annual Real Losses or CARL) Real Losses = Water Losses - Apparent Losses: WATER LOSSES:? acre-ft/yr acre-ft/yr NON-REVENUE WATER NON-REVENUE WATER:? acre-ft/yr = Water Losses + Unbilled Metered + Unbilled Unmetered SYSTEM DATA Length of mains: +? miles Number of active AND inactive service connections: +? 10 1,019 Service connection density: 8 conn./mile main Are customer meters typically located at the curbstop or property line? Yes (length of service line, beyond the property Average length of customer service line: +? 6 ft boundary, that is the responsibility of the utility) Average length of customer service line has been set to zero and a data grading score of 10 has been applied Average operating pressure: psi +?? COST DATA Total annual cost of operating water system: +? 10 $8,751,425 $/Year Customer retail unit cost (applied to Apparent Losses): +? 8 $6.77 $/100 cubic feet (ccf) Variable production cost (applied to Real Losses): +? 7 $ $/acre-ft Use Customer Retail Unit Cost to value real losses WATER AUDIT DATA VALIDITY SCORE: *** YOUR SCORE IS: 89 out of 100 *** A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score PRIORITY AREAS FOR ATTENTION: Based on the information provided, audit accuracy can be improved by addressing the following components: 1: Volume from own sources 2: Variable production cost (applied to Real Losses) 3: Customer retail unit cost (applied to Apparent Losses) AWWA Free Water Audit Software v5.0 Reporting Worksheet 1

73 City of Lompoc 2015 Urban Water Management Plan Final Appendix E. Water Conservation Ordinances APPENDIX E. WATER CONSERVATION ORDINANCES E

74 Ordinance No. 1312(90) - No Water Waste Ordinance Ordinance No. 1319(90) - Graywater Ordinance and Restriction of the use of Potable Water for Dust Control and Compaction at Construction Sites Ordinance No. 1324(90) - Reclaimed Water Rates Ordinance No. 1333(90) - Amended Ordinance No. 1312(90) Ordinance No. 1334(90) - Water Conservation Program to Regulate the Addition of New Water Users (Retrofit/Rebate of Plumbing Fixtures) Ordinance No. 1372(92) - Continuation of the City s Ordinance Relating to Water Conservation, Prohibitions, and Restrictions on the Use of Water, Based Upon Long-Term Water Shortage and Water Problems Ordinance No. 1414(96) - Amended Ordinance No. 1319(90) for Graywater Ordinance No. 1610(15) - An Urgency Ordinance of City of Lompoc, County of Santa Barbara, State of California, Amending Certain Subsections of Section of the Lompoc Municipal Code Prohibitions and Restrictions on the Use of Water Ordinance No. 1620(16) - An Ordinance of the City of Lompoc, County of Santa Barbara, State of California, Amending in its Entirety Chapter of Title 15 of the Lompoc Municipal Code Relating to Water-Efficient Landscape and Irrigation Standards Resolution No. 4159(92) - Long Term Water Shortage in the City of Lompoc Resolution No. 5858(13) - Wastewater Rates and Charges Resolution No. 5859(13) Water Rates and Charges Resolution No. 6052(16) - Water Rates and Charges Resolution No. 5629(10) - Amending the Standards and Guidelines Relating to Development Project Impact on Water Supply (Retrofit/Rebate Program) Resolution No. 6056(16) - Repeal of Current Water Shortage Contingency Plan & Adoption of New Water Shortage Contingency Plan

75 ORDINANCE NO. 1312(90) NO WATER WASTE ORDINANCE

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80 ORDINANCE NO. 1319(90) GRAYWATER ORDINANCE AND USE OF SECONDARY TREATED WASTEWATER EFFLUENT FOR DUST CONTROL AND COMPACTION AT CONSTRUCTION SITES

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84 ORDINANCE NO. 1324(90) RECLAIMED WATER RATES

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87 ORDINANCE NO. 1333(90) AMENDED ORDINANCE NO. 1312(90)

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90 ORDINANCE NO. 1334(90) WATER CONSERVATION PROGRAM TO REGULATE THE ADDITION OF NEW WATER USERS (RETROFIT/REBATE OF PLUMBING FIXTURES)

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95 ORDINANCE NO. 1372(92) CONTINUATION OF THE CITY S ORDINANCE RELATING TO WATER CONSERVATION, PROHIBITIONS, AND RESTRICTIONS ON THE USE OF WATER, BASED UPON LONG-TERM WATER SHORTAGE AND WATER PROBLEMS

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99 ORDINANCE NO. 1414(96) AMENDED ORDINANCE NO. 1319(90) FOR GRAYWATER

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102 ORDINANCE NO. 1610(15) AN URGENCY ORDINANCE OF THE CITY OF LOMPOC, COUNTY OF SANTA BARBARA, STATE OF CALIFORNIA, AMENDING CERTAIN SUBSECTION OF SECTION OF THE LOMPOC MUNICIPAL CODE PROHIBITIONS AND RESTRICTIONS ON THE USE OF WATER.

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105 ORDINANCE NO. 1620(16) AN ORDINANCE OF THE CITY OF LOMPOC, COUNTY OF SANTA BARBARA, STATE OF CALIFORNIA, AMENDING CHAPTER OF TITLE 15 OF THE LOMPOC MUNICIPAL CODE RELATING TO WATER EFFICIENT LANDSCAPE AND IRRIGATION STANDARS

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109 RESOLUTION NO. 4159(92) LONG TERM WATER SHORTAGE IN THE CITY OF LOMPOC

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113 RESOLUTION NO. 5858(13) ESTABLISHING INCREASED WASTEWATER RATES AND CHARGES

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120 RESOLUTION NO. 5859(13) ESTABLISHING INCREASED WATER RATES AND CHARGES

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127 RESOLUTION NO. 6052(16) SUSPENDING A PORTION OF THE FISCAL YEAR INCREASE IN MONTHLY WATER SERVICE AND CONSUMPTION CHARGES.

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131 RESOLUTION NO. 5629(10) AMENDING THE STANDARDS AND GUIDELINES RELATING TO DEVELOPMENT PROJECT IMPACT ON WATER SUPPLY (RETROFIT/REBATE PROGRAM)

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135 RESOLUTION NO. 6056(16) REPEALING RESOLUTION NO. 5728(11) AND ADOPTING A NEW WATER SHORTAGE CONTINGENCY PLAN.

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140 City of Lompoc 2015 Urban Water Management Plan Final Appendix F. Lompoc Groundwater Management Plan APPENDIX F. LOMPOC GROUNDWATER MANAGEMENT PLAN F

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142 CITY OF LOMPOC Groundwater Management Plan NOVEMBER 2013 Prepared for CITY OF LOMPOC Prepared by WEST YOST ASSOCIATES

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144 Table of Contents List of Acronyms and Initialisms Executive Summary ES.1 Authority... ES-1 ES.2 Purpose of the Groundwater Management Plan... ES-2 ES.3 Overall Groundwater Management Goal... ES-3 ES.4 Basin Management Objectives... ES-3 ES.5 Groundwater Management Plan Components... ES-6 ES.6 Advisory Committee Formation... ES-7 ES.7 Future Groundwater Management Plan Updates... ES-7 ES.8 Financing... ES-7 Section 1 Introduction 1.1 Organization of the Groundwater Management Plan Authority City of Lompoc Description and Overview Purpose of the Groundwater Management Plan Institutional Setting State Water Resources Control Board Order Cachuma Project Settlement Agreement National Marine Fisheries Service Biological Opinion Section 2 Basin Description and Lompoc's Water Supplies 2.1 Hydrologic and Water-Use Settings Hydrogeologic Setting Hydrologic Setting Historical Groundwater Conditions Projected Groundwater Conditions Projected Groundwater Pumping Projected Groundwater Conditions Land Subsidence Climate Change Section 3 Groundwater Management Goal and Plan Components 3.1 Overall Groundwater Management Goal Basin Management Objectives Groundwater Management Plan Components Agency Coordination, Stakeholder Involvement, and Public Outreach Monitoring Program Groundwater Sustainability November 2013 N:\C\473\ \WP\ np1 R GWMP i City of Lompoc Groundwater Management Plan

145 Table of Contents Adaptive Management and Mitigation in Response to Climate Change Groundwater Protection Planning Integration Section 4 Plan Implementation 4.1 Future Groundwater Management Plan Updates Financing Section 5 References List of Appendices Appendix A: Public Notification and Outreach Information Appendix A.1 Notice of Intent to Prepare Groundwater Management Plan Appendix A.2 Notice of Public Participation Appendix A.3 November 13, 2012 Stakeholder Meeting to Discuss Preliminary Draft Basin Management Objectives Appendix A.4 July 3, 2013 Stakeholder Meeting to Discuss the Draft Groundwater Management Plan Appendix A.5 Notice of October 1, 2013 Hearing to Consider Adoption of the Groundwater Management Plan Appendix A.6 Letter of Support from the Santa Ynez River Water Conservation District Appendix B: City of Lompoc Resolutions and Supporting Information Appendix B.1 Resolution No (11): Intent to Prepare a Groundwater Management Plan Appendix B.2 Resolution No (13): Resolution to Adopt a Groundwater Management Plan Appendix B.3 CEQA Categorical Exemption to Adopt and Implement the Groundwater Management Plan Appendix C: Groundwater Management Institutional Framework Documents Appendix C.1 Cachuma Project Settlement Agreement Appendix C.2 State Board Water Right Order Appendix C.3 State Board Water Right Order Appendix C.4 State Board Water Right Order 94-5 Appendix C.5 USGS Groundwater Monitoring Program Contract Appendix C.6 USGS Stream Gauging Program Contract Appendix C.7 USBR January 2013 Water Use Report Appendix C.8 CASGEM Participation Appendix D: Recommended Procedures for Groundwater Level Monitoring Appendix E: Recommended Procedures for Groundwater Sampling Appendix F: Recommended Groundwater Quality Assurance/Quality Control Plan November 2013 N:\C\473\ \WP\ np1 R GWMP ii City of Lompoc Groundwater Management Plan

146 Table of Contents List of Tables Table 2-1. CUWA Adaptation and Mitigation Examples List of Figures Figure ES-1. Santa Ynez River Valley Groundwater Basin... ES-8 Figure ES-2. Lompoc Groundwater Basin... ES-9 Figure ES-3. Groundwater Management Components... ES-10 Figure 1-1. Santa Ynez River Valley Groundwater Basin Figure 1-2. Lompoc Groundwater Basin Figure 2-1. Hydrogeologic Units within Lompoc Groundwater Basin Figure 2-2. Cross Section A-A through Lompoc Groundwater Basin Figure 2-3. Cross Section B-B through Lompoc Groundwater Basin Figure 2-4. Groundwater Levels and Directions of Groundwater Flow within Lompoc Groundwater Basin Figure 2-5. Historical Groundwater Pumping by the City of Lompoc Figure 2-6. Historical Groundwater Pumping by MHCSD Figure 2-7. Historical Groundwater Pumping by VVCSD Figure 2-8. Monitoring Wells with Hydrographs Figure 2-9. Historical Groundwater Levels in Well 07N34W27K04 near the City of Lompoc Figure Historical Groundwater Levels in Well 07N34W27K05 near the City of Lompoc Figure Historical Groundwater Levels in Well 07N34W14F04 near MHCSD Figure Historical Groundwater Levels in Well 07N34W14L01 near MHCSD Figure Historical Groundwater Levels in Well 07N34W15D01 near VVCSD Figure Historical Groundwater Levels in Well 07N34W15D02 near VVCSD Figure Historical Average Groundwater Dissolved Solids Delivered to City of Lompoc Water Treatment Plant Figure Historical Groundwater Dissolved Solids in Well 07N34W34A04 near City of Lompoc Figure Historical Flow-Duration Relations for Santa Ynez River Stream Flow at the Narrows Figure Relation Between Santa Ynez River Stream Flow at the Narrows and Stream Flow Dissolved Solids Figure Projected 2030 Pumping for City of Lompoc Figure Projected Pumping for MHCSD at Full Development Figure Projected Pumping for VVCSD at Full Development Figure Finite-Element Mesh for HCI Regional Groundwater Model November 2013 N:\C\473\ \WP\ np1 R GWMP iii City of Lompoc Groundwater Management Plan

147 Table of Contents Figure Cross Section C-C through Finite-Element Mesh for HCI Regional Groundwater Model Figure Monthly Groundwater Levels in City Well Field as Simulated by the HCI Regional Groundwater Model for Projected City, MHCSD, and VVCSD Pumping Figure Monthly Groundwater Levels in MHCSD Well Field as Simulated by the HCI Regional Groundwater Model for Projected City, MHCSD, and VVCSD Pumping Figure Monthly Groundwater Levels in VVCSD Well Field as Simulated by the HCI Regional Groundwater Model for Projected City, VVCSD Pumping Figure 3-1. Groundwater Management Components Figure 3-2. Groundwater Monitoring Wells November 2013 N:\C\473\ \WP\ np1 R GWMP iv City of Lompoc Groundwater Management Plan

148 List of Acronyms and Initialisms acre-ft/yr ANA BMOs BNA BO CEQA CASGEM CCRB cfs CUWA CWC City DMMs DPH DWR DWSAP EIR FMP ESA gpcd Groundwater Basin Designation 3-15 GWMP acre-feet per year Above Narrows Account Basin Management Objectives Below Narrows Account Biological Opinion California Environmental Quality Act California Statewide Groundwater Elevation Monitoring Cachuma Conservation Release Board cubic feet per second California Urban Water Agencies California Water Code City of Lompoc Demand Management Measures Department of Public Health Department of Water Resources Drinking Water Source Assessment and Protection Program Environmental Impact Report Fish Management Plan Endangered Species Act gallons per capita per day Santa Ynez River Valley Groundwater Basin Groundwater Management Plan November 2013 N:\C\473\ \WP\ np1 R GWMP 1 City of Lompoc Groundwater Management Plan

149 List of Acronyms and Initialisms HCI Improvement District No. 1 IPCC IRWMP LRWRP MHCSD NMFS NOAA QA/QC SARP SBCWA Hydrologic Consultants, Inc. Santa Ynez River Conservation District Improvement District No. 1 Intergovernmental Panel on Climate Change Integrated Regional Water Management Plan Lompoc Regional Wastewater Reclamation Plant Mission Hills Community Services District National Marine Fisheries Service National Oceanic and Atmospheric Administration Quality Assurance and Quality Control Sectorial Applications Research Program Santa Barbara County Water Agency SBx7-6 Senate Bill 6 SWP State Board SYRWCD TDS UWMP USGS USBR VVCSD State Water Project State Water Resources Control Board Santa Ynez River Water Conservation District Total Dissolved Solids Urban Water Management Plan United States Geological Survey U.S. Bureau of Reclamation Vandenberg Village Community Services District November 2013 N:\C\473\ \WP\ np1 R GWMP 2 City of Lompoc Groundwater Management Plan

150 EXECUTIVE SUMMARY The City of Lompoc (City) prepared this Groundwater Management Plan (GWMP) pursuant to California Water Code (CWC) Section et. seq. for the portions of its water service area overlying the Lompoc Groundwater Basin. The City recognizes the importance of maintaining a sustainable, reliable, high-quality groundwater supply for the long-term benefit of its citizens. Adoption and implementation of this GWMP supports this goal and helps the City meet requirements in the CWC. The City adopted Resolution No. 5751(11) to prepare this GWMP after convening a public hearing on December 6, 2011, pursuant to Sections et. seq. of the CWC. The City adopted Resolution No (13) to adopt this GWMP after convening a second public meeting on October 1, Appendix A provides documentation of public notification and outreach. Appendix B provides the adopted resolutions to prepare and adopt the GWMP. It is the City s policy to encourage public participation when adopting plans such as this GWMP, and the City sought public input while developing this GWMP. The draft GWMP was available for public review prior to the scheduled public hearings to consider adoption of the GWMP. During the review period, the draft GWMP was available at the City s offices during normal business hours, posted on the City s web page, made available for distribution to interested parties and made available at the Lompoc Public Library. Notices for the public hearings were placed in the City newspaper (the Lompoc Record). The City conducted a public meeting on November 13, 2012 with groundwater basin stakeholders to discuss preliminary draft Basin Management Objectives (BMOs). BMOs support the City s overall groundwater management goal by identifying and prioritizing the most important issues in meeting water resource needs. This GWMP incorporates the BMOs presented and discussed at the November 13, 2012 stakeholder meeting. The City convened a second public meeting to discuss the draft GWMP on July 3, Comments on the draft GWMP were accepted from stakeholders and members of the public and were incorporated in the GWMP. The City also presented and discussed the GWMP at the August 12, 2013 and September 9, 2013 meetings of the City s Utility Commission. The Utility Commission will serve as the advisory committee for the GWMP. Appendix A provides documentation of the public meetings. This GWMP was developed in coordination with local agencies and other basin stakeholders. This plan will be administered under the direction of the City Utilities Director with consideration of the recommendations of an advisory committee made up of members of the City s Utility Commission. ES.1 AUTHORITY The CWC provides the City s authority to adopt a GWMP. The City overlies a portion of the Santa Ynez River Valley Groundwater Basin (California Department of Water Resources [DWR] Subbasin 3-15) and provides water service within its service area. The City is a local agency pursuant to CWC Section (g). The City is authorized to adopt this GWMP as provided in CWC Section (a). November 2013 N:\C\473\ \WP\ np1 R GWMP ES-1 City of Lompoc Groundwater Management Plan

151 Executive Summary ES.2 PURPOSE OF THE GROUNDWATER MANAGEMENT PLAN The City relies on groundwater to meet the water demands of its customers. The purposes of this GWMP are to: 1. State the City s overall groundwater management goal; 2. Put forth BMOs applicable to the City service area; 3. Establish baseline conditions for the portion of the basin that is subject to the GWMP; 4. Provide a mechanism for the continued collection of groundwater and aquifer information; 5. Establish the framework for assessing potential changes with respect to baseline conditions; 6. Establish management actions, including provisions for updating the plan as conditions change and new information becomes available; 7. Maintain consistency with the CWC and help ensure funding eligibility; and 8. Fulfill the CWC requirement that a GWMP must be attached to the City s Urban Water Management Plan (UWMP). The City is located along California s central coast near the mouth of the Santa Ynez River approximately 130 miles northwest of Los Angeles (Figure ES-1). The City overlies the Lompoc Plain portion of the Santa Ynez River Valley Groundwater Basin (DWR Groundwater Basin Designation 3-15). The City, Mission Hills Community Services District (MHCSD), and Vandenberg Village Community Services District (VVCSD) are located in the western Santa Ynez River Valley Groundwater Basin. This area is comprised of the Lompoc Plain, Lompoc Upland, and Lompoc Terrace Subbasins, which collectively are referred to in this GWMP as the Lompoc Groundwater Basin. Figure ES-1 also shows the watershed of the Santa Ynez River. Percolation from the Santa Ynez River channel is the most important source of recharge for the Lompoc Groundwater Basin. Figure ES-2 shows the City water service area. The water service area is defined by the City limits, not including the Lompoc Federal Correctional Complex. Additionally, the service area includes homes located one mile south along Miguelito Canyon Road, the Lompoc Cemetery District, located at the southeastern edge of the service area, and the City s River Park. River Park includes 45 developed acres adjacent to the Santa Ynez River on the east edge of the water service area. The City water service area extends to the north of the Santa Ynez River to include the La Purisima Highlands neighborhood, Allen Hancock College and Ken Adams Park (City of Lompoc, 2008). Other groundwater users in the basin include MHCSD, VVCSD, and agricultural producers, including the Lompoc Federal Correctional Complex farm. November 2013 N:\C\473\ \WP\ np1 R GWMP ES-2 City of Lompoc Groundwater Management Plan

152 Executive Summary ES.3 OVERALL GROUNDWATER MANAGEMENT GOAL The City s overall groundwater management goal is to work cooperatively with basin stakeholders and the public to maintain a sustainable, reliable, high-quality groundwater supply for beneficial use in the City service area and surrounding areas. ES.4 BASIN MANAGEMENT OBJECTIVES BMOs have been developed to support the City s overall groundwater management goal. BMOs have been established to address the following five areas: BMO-01 Protect and maintain groundwater quality within the City service area for the benefit of basin groundwater users BMO-02 Maintain groundwater elevations that result in a net benefit to basin groundwater users BMO-03 Minimize the risk of future significant impact due to inelastic land subsidence BMO-04 Protect against the risk of impacts to surface water flows and quality caused by groundwater pumping BMO-05 Protect against the risk of impacts to groundwater levels and groundwater quality caused by changes in surface water flows or surface water quality BMO-01 Protect and maintain groundwater quality within the City service area for the benefit of basin groundwater users. Groundwater quality within the City s service area is affected by both the groundwater recharge that occurs from the Santa Ynez River and impacts from point and nonpoint contaminant sources. The principal source of recharge to the Lompoc Groundwater Basin is recharge from the Santa Ynez River stream flow. The river enters the Lompoc Valley at the Narrows, and the stream flow recharges the Lompoc Plain from that point downstream. However, recharge occurs mostly within the reach from the Narrows to V Street. The Santa Ynez River stream flow contains high dissolved solids, and the recharge from stream flow is a significant source of salinity within the Lompoc Groundwater Basin. While the stream flow salinity occurs mostly from natural processes within the Santa Ynez River watershed, the stream flow salinity at the Narrows is affected by the operation of Cachuma Reservoir. That operation is regulated by State Water Resources Control Board (State Board) Order 89-18, the Cachuma Project Settlement Agreement, and the National Marine Fisheries Service (NMFS) Biological Opinion (BO). The historical effect of the State Board Order and the Settlement Agreement has been to reduce recharge salinity and to improve groundwater quality. There is, however, a level of uncertainty regarding future Cachuma Project operations resulting from possible revisions to State Board Order and the BO. Stream flow salinity and the corresponding recharge salinity can be impacted by upstream water-use and wastewater-disposal practices within the Santa Ynez River watershed area between Bradbury Dam and the Narrows. November 2013 N:\C\473\ \WP\ np1 R GWMP ES-3 City of Lompoc Groundwater Management Plan

153 Executive Summary Groundwater within the City s service area can also be affected by nonpoint sources of nitrate and salinity, and localized point sources of anthropogenic contaminants. Potential nonpoint sources include fertilizers and other chemicals used in landscape maintenance, salinity in irrigation water, and leakage from sanitary sewers. Point sources include chemical releases from underground storage tanks and other sources. The City supports three water-quality monitoring programs. Firstly, the City cooperates with other local agencies in monitoring Santa Ynez River stream flow and water quality at multiple locations, where the United States Geological Survey (USGS) collects information. Secondly, the City cooperates with other local agencies in monitoring groundwater quality at selected wells within the Lompoc Groundwater Basin, where the USGS collects or compiles such data within the Lompoc Plain and Uplands. Thirdly, the City collects and analyzes groundwater-quality samples from its active production wells to comply with applicable standards in Title 22 of the CWC. The Department of Public Health (DPH) Title 22 program specifies the constituents to be tested, the detection limits for these constituents and reporting requirements. The City s objectives with respect to groundwater quality are to: (1) promote operation of Cachuma Reservoir that produces the optimal stream flow and salinity at the Narrows with respect to groundwater recharge from the Santa Ynez River; (2) promote water-use and wastewater-disposal practices throughout the Santa Ynez River watershed that protect Santa Ynez River stream flow quality at the Narrows; and (3) encourage landscaping practices that minimize discharges of nutrients and other chemicals to the underlying groundwater system. These objectives are to be achieved by: (1) encouraging best management practices; (2) being an active stakeholder regarding water-resources issues throughout the Santa Ynez River watershed; (3) maintaining stream flow and groundwater monitoring within the Lompoc Groundwater Basin; (4) cooperating with other agencies in maintaining stream flow monitoring throughout the Santa Ynez River watershed; (5) periodically analyzing the compiled data for adverse trends; and (6) using the compiled data to optimize the City s groundwater pumping with respect to the water-supply salinity. The City has relatively little control over groundwater salinity, because groundwater salinity is dependent on the Santa Ynez River stream flow salinity at the Narrows. Under the implementation of State Board Order 89-18, the Cachuma Project Settlement Agreement, and the NMFS BO, the groundwater system has been stable with respect to salinity, and that condition is expected to continue provided there are no significant changes in Cachuma Project operations. Were groundwater salinity to start showing a sustained upward trend, the City s primary actions would be to: (1) conduct appropriate evaluations to determine the cause; (2) optimize the geographic distribution of City pumping to minimize water-treatment costs; and (3) encourage the optimal utilization of the Below Narrows Account (BNA) storage within Cachuma Reservoir. Reducing water use most likely would have little impact on groundwater salinity, because the groundwater salinity depends on the salinity of the recharge from stream flow, not groundwater use. BMO-02 Maintain groundwater elevations that result in a net benefit to basin groundwater users. Groundwater levels within the Lompoc Groundwater Basin are affected mostly by recharge from the Santa Ynez River, and pumping by the City, agricultural producers, and others. November 2013 N:\C\473\ \WP\ np1 R GWMP ES-4 City of Lompoc Groundwater Management Plan

154 Executive Summary A dynamic equilibrium exists between recharge and pumping within the Lompoc Groundwater Basin such that long-term groundwater levels are stable. Groundwater levels fluctuate seasonally due to the seasonalities of recharge and pumping, and they fluctuate from year to year due to the yearly variations in Santa Ynez River stream flow at the Narrows. While long-term groundwater levels are static, significant groundwater level declines can occur during drought periods due to reduced Santa Ynez River stream flow at the Narrows and correspondingly reduced recharge, but groundwater levels historically have recovered after each drought. The stream flow at the Narrows includes both tributary runoff downstream from Bradbury Dam and releases from Cachuma Reservoir. The reservoir releases are regulated by State Board Order and the current NMFS BO. The historical effect of the State Board Order has been to produce stable long-term groundwater levels and acceptable groundwater levels during droughts. However, the impacts of the change in reservoir releases due to changes in either the State Board Order or the BO, and its possible revision, create uncertainty. Groundwater levels within the City limits are affected by municipal groundwater pumping by the City and agricultural groundwater pumping within adjacent areas. However, the groundwater pumping by the City and agricultural producers is balanced by recharge from Santa Ynez River stream flow. The City supports four monitoring programs with respect to water supply. Firstly, the City meters the production from each of its water-supply wells. Secondly, the City monitors groundwater levels within its wells. Thirdly, the City cooperates with other agencies in collecting groundwater level data throughout the Lompoc Groundwater Basin, including a cooperative program with the USGS. Fourthly, the City cooperates with other agencies to fund USGS monitoring of Santa Ynez River stream flow at several designated monitoring locations. The City s objectives with respect to groundwater supply are to promote: (1) operation of Cachuma Reservoir that produces the optimal stream flow at the Narrows for groundwater recharge from the Santa Ynez River; and (2) water-use and wastewater-disposal practices throughout the Santa Ynez River watershed that protect Santa Ynez River stream flow at the Narrows. These objectives are to be achieved by: (1) encouraging best management practices; (2) being an active stakeholder regarding water-resources issues throughout the Santa Ynez River watershed; (3) maintaining stream flow and groundwater monitoring within the Lompoc Groundwater Basin; (4) cooperating with other agencies in maintaining stream flow monitoring throughout the Santa Ynez River watershed; (5) periodically analyzing the compiled data for adverse trends; and (6) using the compiled data to optimize the City s groundwater pumping with respect to groundwater levels. The City has relatively little control over groundwater levels, because groundwater recharge is dependent mostly on the Santa Ynez River stream flow at the Narrows. Under the implementation of State Board Order 89-18, the Cachuma Project Settlement Agreement, and the current NMFS BO, the groundwater system has been stable with respect to groundwater levels, and that condition is expected to continue provided there are no significant changes in Cachuma Project operations. Nevertheless, were groundwater levels to start showing a significant downward trend during a drought, the City s primary actions would be to: (1) conduct appropriate evaluations to determine the cause; (2) optimize the geographic distribution of City pumping to maintain the operability of wells; (3) encourage the optimal utilization of the BNA storage within Cachuma Reservoir; and (4) reduce water use. November 2013 N:\C\473\ \WP\ np1 R GWMP ES-5 City of Lompoc Groundwater Management Plan

155 Executive Summary BMO-03 Minimize the risk of future significant impact due to inelastic land subsidence. Land subsidence resulting from groundwater-level declines has not been observed within the Lompoc Groundwater Basin. Furthermore, provided that there are no significant changes in the operation of Cachuma Reservoir, the risk of future significant impacts is very small because long-term groundwater levels have been static. The threshold for the potential occurrence of land subsidence is for groundwater levels to decline below historical lows measured during the drought. The City s objective is to prevent or minimize future impacts that may result from land subsidence in and around its service area by being aware of this groundwater level threshold for the potential occurrence of subsidence. BMO-04 Protect against the risk of impacts to surface water flows and quality caused by groundwater pumping. The Lompoc Groundwater Basin and the Santa Ynez River constitute a dynamically connected system. The recharge from the river is affected by groundwater levels near the river and the groundwater salinity is affected by the stream flow salinity. An objective of the City is to protect the beneficial aspects of those relations. The particulars and approaches to achieving that objective are described above under BMO-01 and BMO-02. BMO-05 Protect against the risk of impacts to groundwater levels or groundwater quality caused by changes in surface water flows or surface water quality. Groundwater levels and quality within the City limits are strongly affected by the quantity and salinity of recharge from the Santa Ynez River. A fundamental objective of the City is to protect that recharge. The particulars and approaches to achieving that objective are described above under BMO-01 and BMO-02. ES.5 GROUNDWATER MANAGEMENT PLAN COMPONENTS The BMOs are linked to management actions that are planned to attain the BMOs and overall groundwater management goal (Figure ES-3). Management actions are addressed under the six components of the GWMP: Agency Coordination, Stakeholder Involvement and Public Outreach Monitoring Program Groundwater Sustainability Adaptive Management and Mitigation in Response to Climate Change Groundwater Protection Planning Integration November 2013 N:\C\473\ \WP\ np1 R GWMP ES-6 City of Lompoc Groundwater Management Plan

156 Executive Summary Each component of the GWMP addresses related groundwater management subject matter and recommended actions. For example, the monitoring program component addresses the related topics of groundwater elevation monitoring; groundwater quality monitoring; groundwater-surface water interaction monitoring; and data management, quality assurance and quality control. The groundwater protection component addresses well construction and destruction policies, wellhead protection policies, protection of recharge areas, management of sources of groundwater contamination, and control of saline water intrusion. ES.6 ADVISORY COMMITTEE FORMATION The Advisory Committee for this GWMP is comprised of the City Utility Commission. Each City Council member appoints a Utility Commissioner during the Council member s term of office. ES.7 FUTURE GROUNDWATER MANAGEMENT PLAN UPDATES Periodic GWMP updates will be required as knowledge of the Lompoc Groundwater Basin increases and groundwater management strategies evolve. The City will periodically consider new groundwater management techniques to be incorporated into the GWMP. Over time, BMOs may need to be modified based on changing groundwater conditions, institutional framework, or the development of new groundwater management objectives. If changes must be made, the City will formalize the changes in an updated GWMP. ES.8 FINANCING The implementation of this GWMP will be funded by the City. Ongoing coordination activities will be performed by City staff using City funds. Most baseline data collection activities will also be funded by the City. The City plans to provide a proportional share of costs for other regional data collection efforts. State or federal funding may be pursued to support implementation of this GWMP. November 2013 N:\C\473\ \WP\ np1 R GWMP ES-7 City of Lompoc Groundwater Management Plan

157 San Francisco Fresno Vandenberg Village Mission Hills Los Angeles 3-15 SANTA YNEZ RIVER VALLEY City of Lompoc LEGEND Watersheds* Buellton Headwater Lompoc Los Olivos Santa Rita The Narrows Bradbury Dam Santa Ynez River FIGURE ES-1 Lake Cachuma Santa Ynez River Valley Groundwater Basin (Basin Designation 3-15) MIssion Hills and Vandenberg Community Services Districts City of Lompoc Water Service 0 20,000 Scale in Feet 40,000 * Santa Ynez River Watershed and Groundwater Basin Recharge Area. City of Lompoc Groundwater Management Plan SANTA YNEZ RIVER VALLEY GROUNDWATER BASIN Last Saved: 9/5/ :26:06 AM areimer; N:\Clients\473 City of Lompoc\ Groundwater Basin MP\GIS\Figures\Figures for GWMP\September 2013\FigES1_SantaYnezBasin.mxd Redding

158 Lompoc Federal Correctional Complex Lompoc Terrace LEGEND Lompoc Groundwater Basin Bulletin 118 Santa Ynez River Valley Groundwater Basin Upper Aquifer Lower Aquifer Below Narrows Watershed Santa Ynez River Lompoc Plain River Bend Park Miguelito Canyon Road Service Area City of Lompoc Water Service Area FIGURE ES-2 Mission Hills Community Services District City of Lompoc Groundwater Management Plan Vandenberg Village Community Services District Note: This groundwater management plan addresses the portion of the City of Lompoc Water Service Area overlying the Lompoc Groundwater Basin. Lompoc Cemetary District 0 5,000 Scale in Feet 10,000 LOMPOC GROUNDWATER BASIN Last Saved: 9/5/2013 9:41:53 AM areimer; N:\Clients\473 City of Lompoc\ Groundwater Basin MP\GIS\Figures\Figures for GWMP\September 2013\FigES2_LompocBasin.mxd Lompoc Uplands

159 GOAL Work cooperatively with Basin Stakeholders and the Public to maintain a sustainable, reliable supply of high quality groundwater for beneficial use in the City of Lompoc service area and surrounding areas. Protect and Maintain or Improve Groundwater Quality Consistent with Beneficial Use BASIN MANAGEMENT OBJECTIVES Maintain Groundwater Elevations to Net Benefit of Stakeholders Minimize the Risk of Future Land Subsidence Protect Against Adverse Impacts to Surface Water Flows and Quality Caused by Pumping Protect Against Adverse Impacts to Groundwater Levels and Quality Caused by Changes in Surface Water Flows PLAN COMPONENTS Stakeholder Involvement Public Outreach Monitoring Program Groundwater Resource Protection Climate Change Groundwater Sustainability Regional Integrated Water Management MANAGEMENT ACTIONS Figure ES-3 City of Lompoc Groundwater Management Plan GROUNDWATER MANAGEMENT COMPONENTS

160 City of Lompoc 2015 Urban Water Management Plan Final Appendix G: Water Quality Report APPENDIX G: WATER QUALITY REPORT G

161 ANNUAL WATER QUALITY REPORT WATER TESTING PERFORMED IN 2014 Presented By City of Lompoc Water Division Este informe contiene información muy importante sobre su agua potable. Tradúzcalo o hable con alguien que lo entienda bien. PWS ID#: CA