Loading...
HomeMy WebLinkAboutDDW-2025-005015 1 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 TECHNICAL MEMORANDUM To: Brent Arns, PE Utah Department of Environmental Quality From: Will Bowman, PE Kimley-Horn and Associates, Inc. 111 East Broadway, Suite 600, Salt Lake City, UT 84111 (385) 210-0470 will.bowman@kimley-horn.com Date: May 12, 2025 Subject: WPR Plat 3C Booster Pump Station: Pump Station 4 - Design Memorandum Wasatch Peaks Ranch Water System #15044 INTRODUCTION AND PURPOSE The purpose of this memorandum is to provide an explanation of the accompanying construction drawings of the Wasatch Peaks Ranch Plat 3C Water Booster Pump Station or named Pump Station 4. The water pump station plans are being submitted for approval from the Utah Department of Environmental Quality (UDEQ). The goal for the project is to begin construction in summer-2025. BACKGROUND The proposed Wasatch Peaks Ranch (WPR) Development is a 15.1 square mile property northeast of Salt Lake City within Morgan County, Utah. The project will include a private low-density residential community with private recreational amenities. The project is zoned as a Resort Special District (RSD) and approved for up to 750 equivalent residential connections (ERC). The residential and commercial developments and associated infrastructure will be developed in phases beginning in mid-2020. The project is being completed by WPR Development Company and the associated infrastructure to support the development includes water and sewer systems in addition to roadways, dry utilities, and drainage improvements. This submittal is a portion of the water system that will be further described below. Pump Station 4 will add or boost pressure in the distribution system on the southern end of the development. WATER SYSTEM The proposed water system includes a raw water system and distribution system. The raw water system is generally composed of groundwater wells, well header piping, transmission main, pump stations and associated storage tanks, and additional raw water piping. The raw water system delivers raw well water to the development to serve the distribution system and the snowmaking and golf course irrigation systems. The distribution system will chlorinate the raw well water and then deliver potable water throughout the development. The components of the distribution system include a chlorination system, pump stations, water storage tanks, distribution piping, and pressure reducing vaults (PRVs). The various water system components will be constructed in phases as development continues. Portions of the water system have been previously approved either for plan approval or for an operating permit by UDEQ’s Division of Drinking Water (DDW) and are summarized in Table 1. The water system 2 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 Exchange Application was approved in Fall 2020. The entire water distribution system was modeled to meet all UDEQ requirements, and a report was approved by DDW on March 23, 2021 Table 1: Current WPR DDW Approvals Item File # Operating Permit Plan Approval Date Permit # Date Permit # Well A 12097 1/8/2024 DDW-2023-044806 Well A2 12792 1/8/2024 DDW-2023-044917 Oxbow Bend Well / Well 3 13264 4/16/2025 DDW-2025-003542 Well Header 12096 12/14/2023 DDW-2023-044297 Transmission Main 0A, 2, 3 12096 12/14/2023 DDW-2023-044297 Pump Station & Tank 1 12606 12/12/2023 DDW-2023-043915 Pump Station & Tank 2 12607 12/12/2023 DDW-2023-043976 Pump Station & Tank 3 12608 12/8/2023 DDW-2023-044088 Chlorination 12621 1/9/2024 DDW-2023-044199 Tank 4 12765 12/13/2023 DDW-2023-044145 Plat 1, 2A, 5 Water 12793 12/21/2023 DDW-2023-044417 Tank 1 Epoxy Lining 17201 11/12/2024 DDW-2024-013199 Plat 3A Water 12793 11/2/2023 DDW-2023-040355 Plat 3C Water 19379 2/18/2025 DDW-2025-001729 Tank 5 21161 5/12/2025 DDW-2025-004439 PUMP STATION 4 Pump Station 4, the proposed booster pump station situated at 41°04'33.16" N 111°48'20.53" W at the north end of Plat 3C, is designed to deliver 200 gpm directly from the existing water distribution system to Tank 5 (ST005), ensuring a stable and efficient supply of water. The pump station features two primary pumps, each rated at 100 gpm, along with one standby pump to provide operational redundancy in case of maintenance or equipment failure per UDEQ standards. Notably, no services branch off the transmission line leading to Tank 5, allowing for optimal flow consistency and minimizing potential distribution disruptions. However, the pumps are equipped with variable frequency drives (VFDs), allowing them to dynamically adjust flow rates to meet demand while also bypassing Tank 5 during temporary maintenance. The station is specifically designed to meet peak day demands for the 81 Equivalent Residential Connections (ERCs) on the southern end of the development directly fed from Tank 5, reinforcing system reliability and maintaining adequate pressure levels for the affected area. 3 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 Due to the unexpectedly higher elevation of residential lots compared to initial infrastructure planning, Plat 3C would not be able to receive sufficient pressure from the distribution line. Tank 5 was designed and placed at a higher elevation than any lot to overcome the insufficient pressure to meet UDEQ pressure standards. This pump facility was deemed necessary to move water from the distribution water line ending in the north end of Plat 3C to fill Tank 5. By implementing this booster pump station to directly fill Tank 5, Tank 5 will effectively compensate for the pressure deficiencies, ensuring compliant and consistent service for the residential area while maintaining overall efficiency within the water distribution network. Please review the details and documents provided during your review. If you have any questions or require clarification, feel free to reach out. 4 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 PUBLIC NOTIFICATION FORM 5 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 DDW PUMPS, PUMP STATIONS CHECKLIST System Name: System Number: Address: City, State, Zip: Name: Title: Address: City, State, Zip: Phone No.: E-mail Address: Name: Company: Address: City, State, Zip: Phone No.: E-mail Address: Name: Company: Address: City, State, Zip: E-mail Address: Name: Duration (hrs):2 hours Jul-25 will.bowman@kimley-horn.com Salt Lake City, UT 84111 111 East Broadway, Suite 600 (385) 210-0470Phone No.: 8b. If YES, specify rule reference below [R309-511-4(1)(a)(i)-(iv)]: Phone No.:(801) 845-4049 Dave Rich 9. State or Federal Agency Funding: 8a. Is the project exempt from the Hydraulic Model Report requirement? [see R309-511-4(1)(a)(i) through (iv)] [ERC = Equivalent Residential Connection; SRF = State Revolving Fund] (713) 417-6261 Mar-26 3. Professional Engineer (PE) Responsible for System Oversight (if applicable) 4. Professional Engineer (PE) Responsible for Design of this Project Begin Construction: Complete Construction: N/A 7. Anticipated Construction Schedule (if applicable): Advertise for Bids: 5. Local Fire Code Official & Required Fire Flow for Proposed Project N/A N/A N/A N/A N/A 2. Name and Address for Official Correspondence (Mayor, Public Works Director, Administrative Contact, etc.) Submit (preferably by email) the completed PNF with plans and specifications to DDW. Email completed form & documents to ddwpnf@utah.gov or mail to:Utah Division of Drinking Water P.O. Box 144830, Salt Lake City, Utah 84114-4830, (801) 536-4200 Salt Lake City, UT 84111 136 East South Temple, Suite 2425 1. Public Water System (PWS) Information Wasatch Peaks Ranch UTAH15044 Req'd flow (gpm): Loan # City, State, Zip:Morgan, UT 84050 E-mail Address:drich@morgan-county.net 1,500 Residential; 2,000 Commercial PROJECT NOTIFICATION FORM (PNF) Utah Division of Drinking Water (DDW) Present No. of ERCs system is obligated to serve: No. of ERCs this project will add:0 Population Served: 6. Project Description (provide a unique facility name, location, and sufficient details to specifically identify the project): DDW - Plan Review File No.: DDW - Date Received: Please provide the following information for a proposed Public Drinking Water Project. For a new public water system (PWS) also complete a New PWS Application Form (see DDW website). N/A agagnon@wprdevco.com Kimley-Horn and Associates, Inc.Bid Opening: https://deq.utah.gov/drinking-water/forms-drinking-water Checklists for use in preparing plans for review by DDW are available at: The Wasatch Peaks Ranch (WPR) Development is a 15.1 square mile development northeast of Salt Lake City within Morgan County, Utah. WPR will include a private low-density residential community with private recreational amenities. WPR is zoned as a Resort Special District and approved for up to 750 ERCs. The residential and commercial developments and associated infrastrucutre has beeen and will be developed in phases starting in mid-2020. As services are installed to various customers, UDEQ backflow prevention guidelines will be followed. The propsed project is to construct a 200 gpm booster pump facility on the south end WPR within plat 3C. The pump station facility will be known as Pump Station 4. The location of the facility will be at coordinates 41°4'33.16" N 111°48'20.53" W. Pump Station 4 will be equiped with 2 duty 100 gpm pumps with 1 standby. WPR has added property lots at higher locations than initially planned in mid-2020. It was decided that a tank (Tank 5) would be constructed at a higher elevation than any of the lots on the south end so adequate pressure is supplied. Pump Station 4 will directly feed into Tank 5 as in no services will draw from the transmission line from pump station to the tank. Tank 5 is a 300,00 gallon tank that will supply enough water for peak day demand for 81 ERCs, fire flow, and additional emergency storage. Pump Station 4 adequately resupplies Tank 5 during peak day demands. Since the storage of Tank 5 is sufficient for the fire flow demand, a fire flow pump was not included at Pump Station 4. Pressure at Pump Station 4 will be around 175 psi at the discharge point and around 35 psi at the suction point. Salt Lake City, UT 84111 N/A Will Bowman Alec Gagnon 136 East South Temple, Suite 2425 Project Manager Yes No Drinking Water Board (SRF or FSRF) Community Impact Board (CIB) None Other (Specify) DDW- Eng-0004 Page 1 of 1 3/22/2018 6 Wasatch Peaks Ranch │Plat 3C Booster Pump Station: Pump Station 4 May 2025 Utah DEQ Division of Drinking Water PWS Name:Name: PWS ID:Registration No.: Project Description:Phone No.: Email: Project File Number: Plan Review Engineer: Notes (note reason below if answer is 'No') R309-500-6 (2)(b)Yes R309-500-6 (2)(c)Yes R309-500-6 (2)(e)N/A R309-500-10 N/A N/A N/A R309-511-4 (1)(a)(i)(A-G)N/A R309-511-4 (1)(b)Yes Hydraulic model approved by DDW on 3/23/2021 R309-511-4 (2)(d)Yes R309-511-4 (2)(f)N/A R309-550-5 (3)(b)N/A R309-105-9 (2)(a)N/A R309-105-9 (2)(b)N/A R309-105-9 (2)(c)N/A R309-540-5 (1)Yes R309-540-5 (2)(a)Yes R309-540-5 (2)(b)Yes R309-540-5 (3)(a,b)Yes R309-540-5 (3)(c)Yes R309-540-5 (4)(a)Yes R309-540-5 (4)(b)N/A Above ground R309-540-5 (5)Yes R309-540-5 (6)Yes R309-540-5 (7)Yes R309-540-5 (8)(a)Yes R309-540-5 (8)(b)Yes R309-540-5 (9)N/A Direct feed from water main R309-540-5 (10)Yes R309-540-5 (11)(a)Yes Pumps, Pump Stations, Hydropneumatic SystemsConstruction Plan Review Checklist Project Information Professional Engineer Responsible for Design Wasatch Peaks Ranch Water distribution in the WPR water system (UTAH15044) will not have adequate pressures without a booster pump station beyond Plat 3A. The WPR Phase 3C Booster Pump Station construction documents (Pump Station 4) consists of miminal yard piping from previously approved distribution and transmission water mains to the pump house. The pump house will pump water at 200 gpm to Tank 5, which was submitted to DDW for review on April 16, 2025. (385) 210-0470 will.bowman@kimley-horn.com DDW Plan Review Information Will Bowman 15044 12680170-2202 General Requirements Plans and specifications sufficiently detailed to assure properly constructed project Plans and specifications stamped, dated, and signed by PE Exception to rule requirements granted by the Director for alternative designs Method of wastewater disposal approved by DWQ or LHD (new water systems/subdivision additions) Project will resolve existing physical deficiencies Instructions: In the appropriate column below, for the Design Engineer or DDW Review Engineer, select a response from the dropdown menu indicating whether each requirement listed is addressed in the plans and specs. Add Notes if needed to explain responses. Consult the UAC rules cited to fully understand the details of the regulatory requirements; the summaries below are not meant to replace the rules. UAC Rule Summary of Rule Requirement Design Engineer Review Engineer Pump station location is compatible with system hydraulics Pump station elevation is a minimum of 3' above 100-year or highest recorded flood elevation (whichever is higher) Grading plan directs surface drainage away from pump station Effect on Distribution System Pressure Minimum 20 psi peak day demand during fire flow Minimum 30 psi peak instantaneous demand Minimum 40 psi peak day demand Pump Stations Hydraulic Analysis Certification and hydraulic model report unnecessary (if project type is listed in R309-511-4 (1)(a)(i)(A-G)) Certification of hydraulic modeling results by PE provided (if project type is not listed in R309-511-4 (1)(a)(i)(A-G)) Hydraulic model report provided (unless R309-511-4 (1)(a)(ii-iv) exemptions apply) System capacity and expansion report provided in lieu of hydraulic model report (if required by the Director) Hydraulic analysis provided for entire distribution system (>50% distribution system upgrade/new distribution system) No services or hydrants will come off of transmission line from pump house to Tank 5 Pump station is weatherproof, excludes animals, locked, and designed to allow O&M Heating is provided if needed for safe operation of equipment and to prevent equipment from freezing Lighting is provided to allow O&M Ventilation is provided 6 air-changes/hr provided for a confined space, subsurface compartment or vault, or if an unsafe atmosphere may develop Pump station is not subject to flooding and is drained to prevent water collection Pump station provides an outlet for drainage from equipment w/o allowing water to flow across floor to reach outlet Pump station is accessible If pump station is in underground vault/compartment or between floors, a permanent stairway, ladder, or ramp is provided Wet well is waterproof, allows for water and sediment removal, is covered, and has access/lid conforming to R309-545-14 Used drinking water will not be returned to the system Automatically operated pump station has automatic signaling that immediately notifies operator when station is out-of-service DDW-Eng-0026 Page 1 of 3 4/24/2020 Notes (note reason below if answer is 'No') General Requirements Instructions: In the appropriate column below, for the Design Engineer or DDW Review Engineer, select a response from the dropdown menu indicating whether each requirement listed is addressed in the plans and specs. Add Notes if needed to explain responses. Consult the UAC rules cited to fully understand the details of the regulatory requirements; the summaries below are not meant to replace the rules. UAC Rule Summary of Rule Requirement Design Engineer Review Engineer R309-540-5 (11)(b)N/A R309-540-6 (1)Yes R309-540-6 (2)(a)Yes R309-540-6 (2)(b)Yes R309-540-6 (3)(a)Yes R309-540-6 (3)(b)Yes R309-540-6 (3)(c)N/A R309-540-6 (4)(a)Yes R309-540-6 (4)(b)Yes R309-540-6 (5)(a)N/A No chemicals added to drinking water in pump station at present R309-540-6 (5)(b)Yes R309-540-6 (6)Yes R309-540-6 (7)(a)N/A R309-540-6 (7)(b)N/A R309-540-6 (8)(a)N/A R309-540-6 (8)(b)N/A R309-540-6 (9)N/A Community booster pump to tank R309-540-7 (1)(a)Yes R309-540-7 (1)(b)Yes R309-540-7 (1)(c)Yes R309-540-7 (1)(d)N/A R309-540-7 (2)(a)Yes R309-540-7 (2)(b)Yes R309-540-7 (3)(a)Yes R309-540-7 (3)(b)Yes R309-540-7 (3)(c)Yes R309-540-7 (3)(d)Yes R309-540-7 (3)(e)Yes R309-540-7 (3)(f)Yes R309-540-7 (3)(g)Yes R309-540-7 (3)(h)Yes R309-540-7 (4)N/A R309-540-7 (4)(a)N/A R309-540-7 (4)(b)N/A R309-540-7 (5)(a)Yes R309-540-7 (5)(b)Yes R309-540-7 (6)(a)Yes R309-540-7 (6)(b)Yes R309-540-8 (1)(a)N/A R309-540-8 (1)(b)N/A R309-540-8 (1)(c)N/A R309-540-8 (1)(d)N/A A booster pump facility that is needed to provide min system pressure has >=2 pumps installed and in operation (see below) AND facility meets max demand of distribution pipeline served by the facility with largest pump out of service Booster pump has automatic shutoff or low-pressure controller as recommended by manufacturer Booster pump withdrawing water from distribution line maintains an intake pressure of >20 psi during normal operation Booster pump withdrawing water directly from storage tank is provided with net positive suction head Pump motor is sized to meet operating conditions without overloading Pumps Pump providing minimum system pressure has capacity to meet max demand and provides min pressures per R309-105-9 Remote-controlled pump station is electrically operated/controlled and immediately notifies water system operator when out-of-service Seal water is at least same quality of pumped water If a non-potable pump uses drinking water for seal water, the water line supplying drinking water is protected from backflow Individual home booster pumps are not allowed for individual service from the public water supply main Pump Appurtenances - Valves Valves provided to allow O&M of pump facility Each pump has an isolation valve on the intake and discharge sides of pump Pump motor provides max horsepower required by the pump without use of service factor Chemicals added to drinking water certified to meet NSF/ANSI 60 Materials that may impart impurities to drinking water certified to meet NSF/ANSI 61. When a pump provides suction lift, the max lift is within manufacturer's recommended limits and tanks priming is provided If priming is required, priming system uses water of at least same quality as pumped water and prevents back siphoning If air-operated ejector is used for vacuum priming, it draws clean air through a screened intake >10' above ground and >10' away from points of contamination Controls are protected from flooding Controls allow pump motor to operate at rated capacity without overloading Controls have proper overload protection for air temperature encountered Controls provide for alternate operation of pumps where >=2 pumps are installed Controls prevent pump motor from starting during pump backspin Controls set start and cutoff pressures to prevent continuous on-off cycling Air release valves provided where needed to allow release of accumulated air in piping and meet R309-550-6(6) If used, foot valve is sized per manufacturer recommendation Pump Appurtenances - Piping Piping has watertight joints Piping is protected against surge or water hammer Pump Appurtenances - Controls Hydropneumatic Facilities for Maintaining Distribution System Pressure Pump Appurtenances - Pressure Measurement Pump (or group of pumps operating together) have means of measuring pressure on discharge line Pump (or group of pumps operating together) have means of measuring pressure on intake line capable of indicating positive and negative pressure Pump Appurtenances - Standby Power Supply Community water system that relies solely on a pump facility to supply water to a service area provided with standby power, power using a permanent or portable generator or electrical service from two independent substations Fuel-operated generators: water supply is protected from contamination from the fuel supply/line and carbon monoxide detector is installed if generator is indoors Controls follow manufacturer's requirements for automatic cutoff pressure Controls prevent surge pressures from activating controls that turn on pumps or other equipment outside the normal design cycle of operation Pump Appurtenances - Water Pre-Lubrication of Pump Bearings If water is used for automatic pre-lubrication of pump bearings and auxiliary direct-drive power supply is provided: pre-lubrication line has valved bypass around automatic control so the bearings can be lubricated manually before the pump is started OR pre-lubrication controls are wired to the auxiliary power supply The purpose of hydropneumatic facility is to maintain distribution system pressure for a public water system Pumps (other than well pump) that supply water under pressure to a hydropneumatic pressure tank conform to R309-540-5 thru R309-540-7 Air-over--water, diaphragm, and bladder hydropneumatic pressure tanks conform to R309-540-8 R309-540-8 does not apply to surge protection tanks, pressure relief equipment, and pressure tanks dedicated solely to fire suppression DDW-Eng-0026 Page 2 of 3 4/24/2020 Notes (note reason below if answer is 'No') General Requirements Instructions: In the appropriate column below, for the Design Engineer or DDW Review Engineer, select a response from the dropdown menu indicating whether each requirement listed is addressed in the plans and specs. Add Notes if needed to explain responses. Consult the UAC rules cited to fully understand the details of the regulatory requirements; the summaries below are not meant to replace the rules. UAC Rule Summary of Rule Requirement Design Engineer Review Engineer R309-540-8 (2)N/A R309-540-8 (3)N/A R309-540-8 (4)N/A R309-540-8 (5)N/A R309-540-8 (5)(a)(i)N/A R309-540-8 (5)(a)(i)N/A R309-540-8 (5)(a)(ii)N/A R309-540-8 (5)(a)(ii)N/A R309-540-8 (5)(a)(iii)N/A R309-540-8 (5)(a)(iv)N/A R309-540-8 (5)(a)(iv)N/A R309-540-8 (5)(b)N/A R309-540-8 (6)N/A R309-540-8 (7)N/A R309-540-8 (8)N/A R309-540-8 (9)(a)N/A R309-540-8 (9)(a)(i)N/A R309-540-8 (9)(a)(ii)N/A R309-540-8 (9)(a)(iii)N/A R309-540-8 (9)(a)(iv)N/A R309-540-8 (9)(a)(v)N/A R309-540-8 (9)(a)(vi)N/A R309-540-8 (9)(a)(vii)N/A R309-540-8 (9)(b)N/A R309-540-8 (9)(b)(i)N/A R309-540-8 (9)(b)(ii)N/A R309-540-8 (9)(b)(iii)N/A R309-540-8 (9)(b)(iv)N/A R309-540-8 (9)(c)N/A A community water system does not use volume of hydropneumatic pressure tank to meet water storage sizing requirements Hydropneumatic Systems - Pressure Tanks Located Below Ground A below-ground location for a hydropneumatic pressure tank and appurtenances meets R309-540-8 (5)(a)(i) thru R309-540-8 (5)(a)(iv) Location elevation is a minimum of 3' above 100-year or highest recorded flood elevation (whichever is higher) Grading plan directs surface drainage away from location Location is not subject to flooding and is drained to prevent water collection If PWS uses hydropneumatic facility to meet min system pressure, >=2 pumps are installed and in operation, unless supplied solely by a well pump Hydropneumatic pressure tank has NSF/ANSI 61 certification and ASME Boiler and Pressure Vessel Code certification A means to measure the operating pressures of a hydropneumatic facility is provided Each hydropneumatic tank has bypass piping and isolation valves to allow tank to be removed from service without disruption of water distribution Min volume of hydropneumatic tank is sized to avoid continuous pump cycling as recommended by manufacturer Hydropneumatic Systems - Air-Over-Water Pressure Tanks Air-over-water pressure tank has the following (R309-540-8 (9)(a)(i) thru R309-540-8 (9)(a)(vii)): an access opening Location provides an outlet for drainage from equipment w/o allowing water to flow across floor to reach outlet A permanent stairway, ladder, or ramp is provided Ventilation is provided 6 air-changes/hr provided for a confined space, subsurface compartment or vault, or if an unsafe atmosphere may develop Electrical controls for hydropneumatic pressure tank located below ground is located above grade and protected from flooding Hydropneumatic Systems - Appurtenances Air delivered by a compressor to an air-over-water pressure tank conforms to the following (R309-540-8 (9)(i) thru R309-540-8 (9)(iv)) is drawn from a point above ground is free of contamination is filtered is oil free The volume of water remaining in an air-over-water pressure tank at the lowest pressure setting provides a water seal at the water outlet to prevent the leakage of air a drain a means to measure pressure a means to measure the water level in the tank an automatic or manual air blow-off a means for adding air pressure operated start-stop controls for a pump DDW-Eng-0026 Page 3 of 3 4/24/2020