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Home My WebLink AboutDDW-2024-010803 195 North 1950 West • Salt Lake City, UT Mailing Address: P.O. Box 144830 • Salt Lake City, UT 84114-4830 Telephone (801) 536-4200 • Fax (801) 536-4211 • T.D.D. (801) 536-4284 www.deq.utah.gov Printed on 100% recycled paper State of Utah Department of Environmental Quality Kimberly D. Shelley Executive Director DIVISION OF DRINKING WATER Tim Davis Director SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor October 13, 2022 Kraig William Christensen Bountiful City Water System 260 West 1050 South Bountiful, Utah 84010 Subject: System-Specific Minimum Sizing Standards Bountiful City, System #06015, File #11565 Dear Kraig Christensen: Based on the water use data submitted to the Division of Water Rights (DWRi), the following system-specific minimum sizing standards have been set for Bountiful City water system: Peak Day Source Demand (gal/day/ERC) – 543 gal/day/ERC Average Annual Demand (gal/yr/ERC) – 188975 gal/yr/ERC Equalization Storage (gal/ERC) – 513 gal/ERC Fire Storage (gal) – 540000 gal These standards are effective as of the date of this letter. A summary of the water use data and calculations used to set the minimum sizing standards is attached for your reference. The Division plans to evaluate these standards every 3 years, or upon request. Water System Background Bountiful City has a population of approximately 37500 with an estimated 12489 equivalent residential connections (ERCs). Bountiful City Water System provides culinary water for indoor and outdoor use to this population. Kraig Christensen Page 2 of 3 October 13, 2022 Minimum Sizing Standard Background Per Utah Code 19-4-114, the information needed for the Division of Drinking Water (the Division) to set system-specific minimum sizing standards may be based on water use data submitted to the DWRi, or alternatively, a community water system can submit an engineering study to the Division if the water system’s water use data is not representative of future use or the water system does not yet have actual water use data. Actual water use data was available through DWRi and an engineering study was not submitted to the Division for review. Therefore, the Division analyzed the submitted DWRi water use data and sent a draft summary of the resulting system-specific minimum sizing standards to you to review the draft system-specific minimum sizing and to verify the draft sizing standards are representative. Therefore, the Division is setting system-specific minimum sizing standard for Bountiful water system. The calculated variability for the Peak Day Demand/Equalization Storage was originally revised as allowed by Division policy per your understanding. Water Use Data Definitions Peak Day Source Demand is the total flow into a public water system to meet the demand of the water system on the day of highest water consumption in a calendar year. Average Annual Demand is the total quantity of drinking water flowing into a public water system within a calendar year. Total Equivalent Residential Connections (ERCs) term represents the number of residential service connections and the number of equivalent residential connections for non-residential connections (commercial, industrial, institutional connections). Minimum Equalization Storage requirement is a volume that is equivalent to the amount of water needed to meet the average day culinary demand for public water systems. Equalized storage per ERC is calculated by dividing the Average Annual Demand per ERC data by the number of operational days in a year. Fire Storage was set based on information from local fire district. Storage Capacity Based on your systems storage facilities and the storage minimum sizing requirement established in this letter, your system is compliant with the minimum storage capacity requirements. Kraig Christensen Page 3 of 3 October 13, 2022 Source Capacity The Division has documentation of established safe yields for all of your system sources. Using total system wide safe yields and the source minimum sizing requirement established in this letter indicates your water system is compliant with minimum source capacity requirements. If you have any questions regarding this letter, please contact Nagendra Dev, of this office, at (801) 680-5296, or Michael Newberry, Engineering Manager, at (385) 515-1464. Sincerely, Michael Newberry, P.E. Engineering Manager ND/mrn/mdb Enclosures 1. Utah Department of Environmental Quality Division of Drinking Water Minimum Sizing Standards Summary Report cc: Jay Clark, Davis County Health Department, jsclark@co.davis.ut.us Kraig Christensen, Bountiful City Water System, kchristensen@bountiful.gov Jerry Wilson, Bountiful City Water System, jwilson@bountiful.gov Nagendra Dev, Division of Drinking Water, ndev@utah.gov DDW-2022-039935 Utah Department of Environmental Quality Division of Drinking Water Minimum Sizing Standards Date Standard Effective: Sat Oct 01 00:31:44 MDT 2022 Peak Day Source Demand per ERC (gal/day): 544 Average Annual Demand per ERC (gal/day): 188,975 Equalization Storage per ERC (gal/day): 514 BOUNTIFUL CITY WATER SYSTEM PWS ID: UTAH06015 Admin Name: KRAIG WILLIAM CHRISTENSEN Address: City, State, Zip: , Phone: 801-298-6180 Email: kchristensen@bountiful.gov System Type: Community Population: 37,500 MINIMUM SIZING STANDARD MINIMUM SIZING STANDARD CALCULATIONS VARIABILITY Data from these reporting years: 2019, 2020, 2021 Max Peak Day Source Demand per ERC (gal/day): 483 Max Average Annual Demand per ERC (gal/day): 146,152 Max Equalization Storage per ERC (gal/day): 399 x x x (1 + 0.126) (1 + 0.293) (1 + 0.287) = = = 543 188,974 513 DWRi WATER USE DATA REPORTED Equalization per ERC (gal): 514 Existing Storage (gal): 17,950,000 ERCs: 12,907 Required Storage w/o Fire Flow: 6,634,198 Required Fire Storage (gal): 540,000 Required Storage w/Fire (gal): 7,174,198 Storage Deficiency: 0 Storage Deficiency (%): 0.0 No Storage Deficiency Peak Day Source Demand per ERC (gpm): 0.38 Existing Source Capacity (gpm): 9,489 ERCs: 12,907 Required Resource Capacity (gpm): 4,905 Source Deficiency: 0 Source Deficiency (%): 0.0 No Source Deficiency Year Peak Day Source Demand (gal/day) Average Annual Demand (gallons) ERCs Peak Demand per ERC (gal/day) Avg Annual Demand per ERC (gal/day) Equaliza tion Storage per ERC (gal/day) OP Days 2021 5,585,086 1,411,948,226.61 12,489 447 113,056 310 365 2020 5,190,806 1,767,406,048.47 12,093 429 146,152 399 366 2019 6,230,271 1,797,182,312.85 12,907 483 138,313 379 365 Variability:0.067 0.126 0.293 0.287 Year Peak Month Average (gal/day) Peak Month Average per ERD (gal/day) Ratio of PD/ERC to Peak Month Avg/ERC 2021 6,619,337 530 0.84 2020 6,366,150 526 0.82 2019 7,818,426 606 0.8 CAPACITY CALCULATIONS FOR STORAGE CAPACITY CALCULATIONS FOR SOURCES SYSTEM STORAGE AND SOURCE INVENTORY Storage ID Storage Name Effective Volume (GAL) ST001 ASHDOWN STORAGE 1,000,000 ST002 LOWER WILLIAMS STORAGE 1,000,000 ST003 TEMPLE VIEW STORAGE 1,500,000 ST004 STONERIDGE STORAGE 500,000 ST005 EGGETT STORAGE 1,000,000 ST006 NORTH CANYON STORAGE 500,000 ST007 BARTON CREEK STORAGE 2,250,000 ST008 MILLCREEK STORAGE 3,500,000 ST009 HOLBROOK STORAGE 1,500,000 ST010 UPPER WILLIAMS STORAGE 1,500,000 ST011 LOWER MAPLE HILLS STORAGE 200,000 ST012 UPPER MAPLE HILLS STORAGE 500,000 ST013 CUMORAH STORAGE 1,500,000 ST014 SUMMERWOOD STORAGE 1,500,000 Storage Totals: 17,950,000 GAL Source ID Source Name Flow Rate (GPM) TP014 MUELLER PARK WTP 1,389 WS001 ZESIGER WELL 500 WS003 CALDER WELL 1 250 WS004 BARTON CREEK WELL 1,200 WS007 CITY SHOP WELL 900 WS009 CALDER WELL 2 1,200 WS010 VIEWMONT WELL 900 WS012 UPPER MUELLER WELL 400 WS013 LOWER MUELLER WELL 250 WS015 SUBCONSERV WELL 1,200 WS018 100 E WELL (REPLACE)1,300 Source Totals: 9,489 GPM