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HomeMy WebLinkAboutRES 04-32RESOLUTION NO.04-32 A RESOLUTION OF THE MAYOR AND CITY COUNCIL OF THE CITY OF APACHE JUNCTION,ARIZONA,APPROVING GENERAL PLAN AMENDMENT CASE GPA-1-03,A CITY -INITIATED TEXT AMENDMENT ADDING SUBSECTION E.WATER RESOURCES ELEMENT,TO CHAPTER 2 OF THE 1999 CITY OF APACHE JUNCTION GENERAL PLAN. WHEREAS.the Mayor and City Council,on November 2.1999,adopted the City Of Apache JUnctiOn General Plan;and WHEREAS; Oe Kayor_.and City Council understand that planning for. sufficient supplies of good quality water will enable and promote future deveTopmeht:Wand WHEREAS,the PTanning and Zoning Commission held public hearings regarding the proposed Water Element under GPA-1-03 on March 23.2004. April 27,2004,May 25,2004,June 27,2004,and November 23,2004,and recommended approval by a vote of 6 to 0:and . WHEREAS,the Mayor and City Council have complied with the requirements for the preparation and adoption of a General Plan Amendment pursuant to Arizona Revised Statutes Annotated Section 9-461.06:and WHEREAS,the Mayor and City Council present the following findings of fact to support the approval of Case GPA-1-03: 1)The proposed text amendment is necessary to comply with the requirements of Arizona Revised Statutes Annotated Section 9-461.06 et seq. •2)In consideration of this amendment,City staff presented documents and written analysis and conducted public hearings consistent with Arizona -Revised Statutes Section 9-461.06 et seq. -NOW.THEREFORE.BE IT RESOLVED BY THE MAYOR AND CITY COUNCIL OF THE CITY OF APACHE JUNCTION,ARIZONA,THAT: RESOLUTION NO.04-32 PAGE 1 OF 2 Case GPA-1-03,a City -initiated General Plan Text Amendment amending Chapter 3 of the 1999 City of Apache Junction General Plan for the purpose of adding a new Subsection titled:E.Water Resources Element (attached as Exhibit A)be approved and adopted., PASSED AND -ADOPTED'RY THE'WOR AND CITY COUNCIL OF THE CITY OF APACHE JUNCTI,ON,ARIZONA: THIS..7Th DAY OF DECEMBER ,2004. SIGNED AND' ATTESTED TO THIS21B ATTEST: X 4 2 M e , . KATHLEEN CONNELLY City Clerk APPROVED AS TO FORM: 4 4 -001.041 RICHARD JOEL STERN City Attorney RESOLUTION NO.04-32 PAGE 2 OF 2 DAY OF PFCFMBFR ,2004. .DOUGLAS COLEMAN Mayor EXHIBIT "A" WATER RESOURCES ELEMENT November 19, 2004 WATER RESOURCES ELEMENT Adopted in 2002, Growing Smarter Plus Legislation, amended the requirements of municipal general plans to include a water resources element that addresses: •The legally and physically known available surface water, groundwater and effluent supplies. •The demand for water that will result from future growth projected in the general plan, added to existing uses. •An analysis of how the demand for water that will result from future growth projected in the general plan will be served by the water supplies identified or a plan to obtain additional necessary water supplies. The City of Apache Junction understands that planning for sufficient supplies of good quality water will enable and promote future development needs. This water resources element addresses community goals and objectives to ensure adequate water supply, protect water quality, and promote reuse and conservation guidelines to enhance future water supplies. 1.Existing Conditions The Apache Junction area is characterized by a broad, fiat -lying alluvial plain cut by low stream terraces and floodplains located in and adjacent to the Salt River and other unnamed washes.The area is bounded by the Superstition Mountains to the northeast. Apache Junction is located in the Sonoran Desert Climatic Region of Arizona, which is characterized by hot summers, with cool winters. Temperatures range from an average maximum of 105° F in July to an average minimum of 39° F in January. The recorded annual precipitation averages 7.2 inches in this area, with the majority of the rainfall occurring during the summer months of July through September and the winter months of December through March. Typically little precipitation occurs during the spring and fall. Apache Junction is situated within the Phoenix Active Management Area and the East Salt River Valley groundwater subbasin. The municipal water providers in the City must meet the requirements of Arizona Department of Water Resources (ADWR) for water providers within the Phoenix Active Management Area. The City of Apache Junction and the future expansion area from the General Plan are illustrated on Figure 1. 2.Water Service The two water service providers, regulated as large municipal providers, supply water to the City of Apache Junction residents.Large municipal providers are defined as serving more than 250 acre-feet (AF) of water per year, regulated for 1 WATER RESOURCES ELEMENT November 19, 2004 specific conservation requirements with an established gallons per capita per day (gpcd) maximum per user.Water is provided to the City of Apache Junction by the Arizona Water Company (AzWC) and the Apache Junction Water Utilities Community Facilities District, which is commonly referred to as Apache Junction Water Company (AJWC). It is estimated that the AJWC currently provides water to approximately 12,000 residents within the City of Apache Junction, based on an estimate of 12,063 people in a count completed by the AJWC in December 2003. The remainder of the City, approximately 24,000 users, receive their water from the AzWC, derived from a current permanent population estimate of approximately 36,000. The AzWC current service area boundary extends beyond the City of Apache Junction city limits, and it supplies water to portions of east Mesa, County lands, and Gold Canyon. According to the General Plan and Apache Junction staff, future expansion of the City of Apache Junction will occur to the south. The AJWC will provide water supply to this future expansion area. Therefore, it is anticipated that the percentage of water supplied to the City of Apache Junction users by the AJWC compared to the AzWC will increase in the future. The service area and City limits are illustrated on Figure 2. 3.Water Resources The water resources available to the City of Apache Junction include groundwater wells, Central Arizona Project (CAP) water and treated effluent. The available water resources are illustrated on Figure 3. a.Groundwater Both of the water service providers, AJWC and AzWC, currently use groundwater as their primary source. In 2001, AzWC completed a hydrologic study for their service area, using the ADWR groundwater model.Based on this study, ADWR determined that 19,255 AF could be pumped annually, and the current and committed demand was only 7,340 AF per year. AJWC completed a hydrologic study in June 2004 to meet the ADWR requirements for designation of assured water supply. This report indicates that there is sufficient groundwater in their existing and proposed service area to meet its estimated build -out demands of 5,404 AF per year.. 2 WATER RESOURCES ELEMENT November 19, 2004 b. CAP Both water companies have CAP allocations for use. The AzWC, which has a current allotment of 6,000 Acre -Feet per Year (AFY), currently uses both treated and untreated CAP water. Treated water is supplied through the City of Mesa water system. The AJWC is not currently using its CAP allocation of 2,919 AFY. AJWC receives recharge credit for this water, which is sold to the New Magma Irrigation District. The AJWC has been accumulating credits since 1997.This balance of storage credits can be applied to future overdraft of groundwater use, if needed to meet future demands as expansion occurs.AJWC is currently negotiating with the City of Mesa, to receive treated CAP water through the Mesa water system. It is anticipated that the connection to the Mesa system will be in place in 2005. c.Effluent Treated effluent available for reuse is calculated assuming 100 gallons of effluent are produced per person per day. Wastewater treatment in the City of Apache Junction is provided by the Superstition Mountain Community Facilities District (SMCFD). The SMCFD Wastewater Treatment Facility is reported to currently have approximately 3.07 AF/day of treated effluent available. Treated effluent is not currently used in the City of Apache Junction. 4.Challenges Key areas of concern to the City are ensuring that both water providers are able to provide sufficient water quantity to meet the existing and future demands within their existing and future service areas.It is also important to the City that the water companies provide a safe water supply that meets all current Environmental Protection Agency (EPA) Safe Drinking Water Maximum Contaminant Levels (MCLs). a.Water Quantity Ensuring sufficient water quantity to meet the long-term demands of the existing and future service area is an important issue. As the City is not a water provider, it is the responsibility of it's water service providers to ensure that the requirements of ADWR are met and sufficient water supply is available. AJWC has historically withdrawn groundwater from wells in its service area to meet its customer's needs. These wells are in close proximity to, and withdraw water from, the same aquifer as the AzWC. The AzWC hydrologic study submitted to ADWR in 2001 demonstrated that in 100 years AzWC's pumping, along with the current and committed 3 WATER RESOURCES ELEMENT _November 19, 2004 demands of other local water users, would lower the local water table to a depth of approximately 750 feet within the AJWC service area. Using data from the AzWC report, ADWR determined that the available 100 -year supply for the AzWC service area totaled 19,255 acre-feet. This leaves only about 250 feet of aquifer in the AJWC area available for future water development; however, because of the shallow bedrock in the area due to the proximity to the Superstition Mountains, it is unlikely that significant amounts of additional water can be developed. As their service area extends, AJWC should pursue constructing wells south of Guadalupe Road. Assuming similar ground conditions and water levels to the existing wells, it is anticipated that a significant quantity of groundwater will be available in this area. This area is illustrated on Figure 3. b.Water Quality A review of the records from both water companies indicates that the water distributed by both the AJWC or the AzWC meets the current EPA MCLs. Although all regulated organic and inorganic compounds are tested regularly for water systems, the following parameters are most commonly critical in Arizona water systems in this area. The current MCLs for these parameters is presented below: Nitrate (NO3) Fluoride (F) Total Dissolved Solids (TDS) Arsenic (As) 10.0 milligrams per liter (mg/1) 4 mg/I 500 mg/1 0.050 mg/1 The standards for nitrate, fluoride and arsenic are primary drinking water standards and enforceable by regulatory agencies. TDS is not regulated for drinking water use, and primarily impacts the taste and appearance of the water. The groundwater quality in the Apache Junction area tends to be elevated in arsenic and slightly elevated in Total Dissolved Solids (TDS). Arsenic is a naturally occurring element in the soil, relatively common in Arizona. AJWC blends water to meet the current MCL for arsenic. As listed above, the current MCL for arsenic is .050 mg/I (50 parts per billion (ppb)), however in January 2006 an MCL of .010 mg/1(10 ppb) will become effective.Both the AJWC and the AzWC will need to 4 WATER RESOURCES ELEMENT November 19,2004 provide treatment and/or additional blending of low arsenic supplies to meet this new MCL. 5.Adequacy of Current Water Sources The AJWC potable water supply currently consists of two groundwater wells, Wells No. 5 and No. 6 providing approximately 1,800 AF per year or 1.76 million gallons per day (MGD).Well No. 5 provides approximately 950 AFY and well No. 6 provides 550 AFY.The AJWC also has a CAP allotment of 2,919 AF per year (2.6 MGD). At present, AJWC does not use their CAP allotment as part of the water supply. AJWC is presently designing a connection to Well No. 8, which will provide an additional 400 AFY (0.36 MGD). The static water level for all three wells approximately 600 ft below the ground surface. AJWC is also nearing completion on the design for a waterline to the City of Mesa and an agreement with the City of Mesa to provide treated CAP water to AJWC. The AJWC also maintains a connection to the AzWC water system and under emergency or maintenance conditions, is able to buy water from AzWC. AJWC's current demands are approximately 1,500 AF per year. The AzWC potable water supply consists of six wells with a combined capacity of 10,635 AF per year (9.5 MGD),and a CAP allotment of 6,000 AF per year (5.3 MGD).It is estimated that AzWC is currently providing approximately 4,356 MGD to users in the City of Apache Junction. Both water providers report a peak summer demand and a spike in the winter from winter residents.The impact of the increased winter demand has decreased over the past few years. The summer peak exceeds the winter demand spike. Both water companies have adequate water supplies to meet current demands. 6.Assessment of Future Water Source Requirements An assessment of available water supply for future demands depends on the estimated population growth.It is not anticipated that there will be any significant population growth in the AzWC service area within the City of Apache Junction, as there is limited land available for future development. As presented in the Apache Junction General Plan, the majority of the growth in the City will occur to the south. AJWC will provide water service to this area in addition to its current service area. A summary of the projected population and demands for the City, broken down by Service Provider is presented in the following table. 5 WATER RESOURCES ELEMENT November 19, 2004 Year Estimated Total City Population Apache Junction Population Served by AzWC Apache Junction Population Served by AJWC % of total Population Population 5 Average Demands MDDI % of total Population Population 6 Average Demands MDDI MGD 2 AFD AFY MGD MGD 2 AFD AFY 3 MGD 2004 36000 67%24000 3.22 9.86 3600 5.79 33%12000 1.61 4.93 1800 2.89 2009 40600 • 66%26600 3.56 10.93 3990 6.42 34%14,000 1.88 5.75 2100 3.38 2014 45500 63%28500 3.82 11.71 4275 6.87 37%17,000 2.28 6.99 2550 4.10 2019 51800 60%31100 4.17 12.78 4665 7.50 40%20,700 2.77 8.51 3105 4.99 2024 58600 57%33400 4.48 13.73 5010 8.06 43%25,200 3.38 10.36 3780 6.08 2029 67000 54%36400 4.88 14.96 5460 , 8.78 46%30,600 4.10 12.58 4590 7.38 Notes 1.Maximum Day Demand (MDD) - 1.8 x Average Demand, from Arcadis Water Master Plan, prepared for AJWC, 2002. 2.Based on 134 gallons per capita per day(gpcd), Average demand, from Arcadis Water Master Plan, prepared for AJWC, 2002. 3.Current water usage for AJWC is 1500 AFY, which correlates reasonably well with population and gpcd figures. 4.Water Companies currently experience 2 peaks, one in summer and one in winter with additional seasonal resident population. The summer peak is higher than the winter peak, therefore further analysis of winter versus summer population is not necessary. 5.Population growth for AzWC service area is based on 1.75% growth rate (current City rate). 6.Population growth for AJWC service area based on Hydrogeologic Investigation prepared by Southwest Ground -water Consultants, June 2004.1.75% growth (current rate) from 2004 to 2007, 4% growth rate from 2004 to 2029, as lands to the south are developed.These numbers have been rounded to the nearest 100 people. 7.Population estimates assume that the State land to the south of the City will be developed, consistent with the City of Apache Junction General Plan, Development Plan. 8.The demands presented in the Arcadis Water master Plan vary slightly from the demands presented in the Hydrogeologlic Investigation prepared by Southwest Ground -water consultants, July 2004.The Arcadis per capita demands have been used as indicated above. 6 WATER RESOURCES ELEMENT November 19, 2004 Census data from 2000 reported a population in Apache Junction of 31,840 people. A more recent estimate by the Department of Commence reports a population in 2003 of approximately 41,000 people. As there have not been sufficient housing starts between 2000 and 2003 to support a population growth of almost 10,000 people, population estimates for this study are based on the Hydrogeologic Study prepared by Southwest Ground -water Consultants for the AJWC in June 2004. As indicated in the previous table, the estimated water demands for the AzWC service area over the next 25 years are estimated to be approximately 5,460 AFY Within the City of Apache Junction. The City of Apache Junction is estimated to be approximately 60% of the total users within the AzWC service area. Therefore, the total future demands for the area, based on the current service area are estimated to be 9,100 AFY. According to the ADWR groundwater model, 19,255 AFY is available for the 100 -year supply within the AzWC service area.In addition to groundwater, AzWC have an allocation 6,000 AFY of CAP water available for use. The water demands for the AJWC service area are estimated to increase to approximately 4,590 AFY over the next 25 years.Based on the Hydrogeologic Study recently prepared, it is estimated that there is sufficient groundwater available in this area to provide at least 5,404 AFY.In addition, AJWC has an allocation of 2,919 AFY of CAP water. There are sufficient water resources available within the City of Apache Junction and the proposed City expansion areas to meet the projected demands. The AJWC will need to develop additional groundwater wells to meet their needs as the demands increase. 7.Viability of Effluent Reuse Effluent production is directly in proportion to the serviced population. Treated effluent is typically used to irrigate landscaped areas, golf courses, and recreation fields and also used for industrial processing. In 2005, the Superstition Mountain Community Facilities District (SMCFD) will complete a the Superstition Mountains Community Facilities District Wastewater Treatment Comprehensive Growth Management Plan that will determine effluent production and assist the City of Apache Junction in determining the viability of effluent reuse. 8.Water Conservation As a municipal water provider, AJWC and AzWC must meet the requirements of the Groundwater Code for water providers within active management areas. The Phoenix Third AMA establishes the basic formula for determining a municipal provider's total gallons per capita per day (gpcd).Both the AJWC and the AzWC 7 WATER RESOURCES ELEMENT November 19, 2004 goal is calculated at 100 gpcd for residential and 62 gpcd and 34 gpcd for non- residential, respectively for the AJWc and AzWC. Both water providers are working to achieve this goal. Both water companies should consider increasing their use of CAP water to their maximum allocation, to reduce their reliance on groundwater. The City of Apache Junction can work with AJWC to decrease the per capita water consumption as the majority of the new development in the area will be served by AJWC. It is unlikely that any significant water conservation can be achieved with existing development.However, the City can encourage that all new development provide water conservation measures. As both water companies are designated as having assured water supplies, the continued development and utilization of renewable supplies will be required to meet future demands due to the maximized use of current groundwater supplies. The City of Apache Junction will explore the development of guidelines for industrial use, irrigation, and land development to conserve water use, including the use of low water use landscaping, low use water fixtures, and effluent reuse. Goals, Objectives, and Strategies Goals, objectives and policies have been prepared to address the water resources for the City of Apache Junction. The purpose is to provide the City with guidelines for review of the water resource element in existing and future land use decisions in the City. The goals, objectives and policies have been developed based on input from the public, input from City personnel and the research conducted as part of this report. Goal One:Ensure the provision of an adequate quantity and quality of water, including associated delivery systems, to serve the needs of existing and future residents of Apache Junction. Objective WI: Develop and maintain physically and legally available water supplies of sufficient capacity and quality to satisfy demands of current and future water users. Strategy W1.1 Investigate creative partnerships for the supply and delivery of water to existing and new development in Apache Junction. Strategy W1.2 Participate in processes to develop alternative regulations to facilitate the acquisition, development and use of necessary water supplies. 8 .. Strategy W1.3 Encourage the use of Scientific/technical studies to reduce negative impacts of the development of new water sources on existing water facilities. Goal Two: Objective W2: Strategy W2.1 Strategy W2.2 WATER RESOURCES ELEMENT November 19, 2004 Maintain a reliable water supply in order to enhance the security and economic sustainability of Apache Junction. Develop and maintain physical and legal availability of adequate water resources to meet demands during periods of drought or high demand. Develop a drought response plan that sets forth steps that must be taken in order to cope with periods of limited surface water supply due to drought and other unforeseen acts of nature, including enhanced public education and the enactment of temporary regulations. Develop and/or participate in existing public education efforts regarding the incorporation of water harvesting, xeriscape and other water conservation measures into new developments, redevelopment areas and city projects. Goal Three:Promote development that conserves water through the type of landscaping, provision of recharge, and use of renewable water supplies wherever feasible. Objective W3: Strategy W3.1 Strategy W3.2 Strategy W3.3 Conserve the use of both groundwater and renewable water supplies. Encourage compliance with Arizona Department of Water Resources programs, rules and regulations for new developments and city projects. Encourage compliance with water conservation guidelines set by the Arizona Department of Water Resources, for all users, including those outside of the Active Management Areas. Encourage use of native, naturalizing, drought tolerant and .drought resistant landscaping for all new developments. 9 WATER RESOURCES ELEMENT November 19, 2004 References Arizona Department of Water Resources, 1999. Third Management Plan, Phoenix AMA. City of Apache Junction, Water Master Plan, Arcadis, July 2001 Hydrogeological Study for Apache Junction Water Company, Southwest Ground -water Consultants, Inc., June 2004 Water system information, Apache Junction Water Company Water system information, Arizona Water Company Population data for 2003, Arizona Department of Economic Security, 2000 Census, Maricopa Association of Governments (MAG) Regional Transportation Plan City of Apache Junction General Plan Groundwater Background Study Technical Memorandum, HydroLogic, June 2004 10 LOST DUTCHMAW St.lep AZWC WELL P40 16 - CITY OF APACHE JUNCTION CITY EXPANSION AREA FROM GENERAL.,e4Alit'A Scale in feet Stantec Stantec Consulting Inc. 8211 S 48th Street Pttoenix AZ USA 85044-5355 re 502.438.2200 Ea.602 431.9562 troy stonlac tom Copyright Reserved The Controctor see runty and be moorsude for Or crrnantons.DO NOT *cote the drmins -any errors or omeserts onell b e reported to Stontec Consulting 1%WIttovt dem, The Coor,,ohts to ad aosqrcs and dra..nos are ted property ol Stontec ComuApno 44.Reproduct,on or we for otter thod Itrot oulbo,m0 It Slant.Cansultna Iral Ii arbiaden. LEGEND: CITY OF APACHE JUNCTION CORP BOUNDARY EXPANSION AREA FROM GENERAL PLAN Client/Project CITY OF APACHE JUNCTION WATER RESOURCES ELEMENT FOR GENERAL PLAN Apache Junction, Artrona SITE PLAN Project No,Scale Date 181310103 I' a 3,000'June 2004 FIGURE 1 SOUTHERN AVENUE MCDOWELL BLVD SUPERSTMON FREEWAY B‘EUNE AVENUE WARNER AVENUE RAY AVENUE RPORATi COUNTY CITY OF APACHE JUNCTION APACHE JUNCTION WATER PLANNING AREA POTENTIAL CITY EXPANSION 17AI Stantee Stantec Consulting Inc. 8211 5_413111 Street Phoenix AZ USA 85044-5355 lel.602.438.2200 ha,602 431.9562 eme.stontee.carn Copyright Reserved The Controcen sine •enly and es rexponsoie fox Al dinneneons i OD NOT =see the arse., - any snarl e,onliseens see,Ye repartee Ie SLonien Denver, es de t, The 011 oeuxru 000 drawees ars Dia ensenr ,e e, Slantec Consulting Ire.fissteauction or sea I or 0100/Ition 8•,x1 0514000000 4 Staxtee Ceenning an is lateklesn. LEGEND: V/Z/A Client/Project CITY OF APACHE JUNCTION WATER RESOURCES ELEMENT FOR GENERAL PLAN Apache Junction, Alton, 2100 WATER PROVIDERS Prefect No Scale Date 181310403 r= 3,000'June 2004 FIGURE 2 ry OR TY AJWC Virg: 1 )0 N05 AJ1VC WELL AZWC WELL N08 (-)N012 AZWC WELL NO 15 UNIEICORPO AT MAL I— E j—C-OUNTY GAJWC WELL NO 6 GOLD CANYON MCDOWELL BLVD MCKEL UPS ROAD COUNTY LAND 0 x BROAD LOST DUTCHMAN BLVD CITY1OF MESA SUPERSTITION BLVD APACHE TRAIL NUE ' [3 CITY OF APACHE JUNCTION ARIZONA WATER COMPANY I t.4P s' 0 0 COUNTY LAND AZIC WELL e NO IS 11813 1,A0 01110DI Vulyr-a- TOIAJWC SOWHERN AVENUE AZWC WELL NO 16 0 SUPERVI7770N FREEWAY US HWY 60 BASIeINE AVENUE 6 216,C WELL NO 11 1--cnae • A ri 0111101 V \vo L•111—..11.1 +—I—I TO WC \ + .74...s GUADALUPAAVENUE fir 1SUPERSTITI ,N MOUNTAIN COMMUN FACIL fill SO/STRICT WASTEWAi TREATMENT FACIL ELLIOT AVENUE WARNER AVENUE APACHE JUNCTION WATER COMPANY Stantec Stantec Consulting Inc. 8211 S 481n Street 5 Phoenix AZ USA 8T e 04 45-05235.4313.2200 Tex 602 431 9562 ••• stontee cern Copyright Reserved The Contract*. taall cwly 0n4 be response,.tor A l dicnondone. CO NOT ace. Ice enninc - cry more IN amnia.snail be reported la Slant=Can.iting No cAnaci !cloy. The CoanyKoo enl:ent one drOVINIS Ole tne wooerty Si Stomas Connekno In,flecrolucCon or coo loo other than It.ot airtMorttao by Sicrerc C0.111,Inc ‘s Inctkeen. LEGEND: ED Client/Pro/act CITY OF APACHE JUNCTION WATER RESOURCES ELEMENT FOR GENERAL PLAN Apache Junction, Ancona WATER RESOURCES Prolect No.Scala Date 181310403 1 e 3,000 June 2001 FIGURE 3