DDW-2025-002272

March 10, 2025
Via Email: [e-mail]
Brett Palmer
Stansbury Park Improvement District
#10 Plaza
Stansbury Park, Utah 84074
Subject:2025 Renewal System-SpecificMinimum Sizing Standards—Final Determination
Stansbury Park Improvement District, System #23003, File #11532
Dear Brett Palmer:
DETERMINATIONS
Based on the findings set forth below, the Division of Drinking Water (the Division) hereby establishes the following system-specific minimum sizing standards for Spanish Fork City(the
System):
Peak Day Source Demand per ERC (gallons/day) – 2,119.42
Average Annual Demand per ERC (gallons/year) – 296,704.85
Equalization Storage per ERC (gallons/day) – 812.89
Fire Storage (gallons) – 540,000
Introduction
Pursuant to Utah Code Section 19-4-114, the Director of the Division (Director) is required to establish system-specific minimum sizing standards based on, among other factors, water
use data submitted to the Division of Water Rights (DWRi). The Director’s determinations may also be based on engineering analyses and other evidence if this is available. This final
determination letter is addressed to you in your capacity as the Administrative Contact for the System. The Director has delegated the responsibility for making system-specific minimum
sizing standards under Utah Code Section 19-4-114 to the Engineering Manager for the Division.Prior to issuing this final determination letter, the Division analyzed applicable DWRi
water use data and sent a draft summary of the Division’s proposed system-specific minimum sizing standards to the System on January 30, 2025. The Division allowed for time for the System
to review the draft system-specific minimum sizing. The System provided comments on March 5, 2025. The Division has taken these comments into account in reaching this final determination
of the system-specific minimum sizing standards for the System. A summary of the water use data and calculations the Division used to make these determinations is attached as part of
the administrative record.
Water Use Data Definitions
As used in this Final Determination, the following terms have the following meanings:
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 the highest water consumption in a calendar year.
Average Annual Demandis 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 Storagerequirement 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.
Water System Background Facts
The Stansbury Park Improvement District is a community water system with a population of
9,839 people. The water system has 4,234 residential, 293 commercial, and 4 industrial connections for a total of 4,531 service connections. There is also a pressurized irrigation system
for the golf course but no residential connections.System-Specific Minimum Sizing Standards—BackgroundUnder Utah Code Section 19-4-114, the legislature required that the Director establish
minimum sizing standards on a system-specific basis instead of statewide, as the Division has done in the past. System-specific determinations need to be based on system-specific information.
The code allows the Director to rely on water use data submitted to DWRi. Alternatively, a community water system may perform and 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. In this matter, an engineering study was submitted to the Division
for review. Therefore, the Division relied upon the engineering study.
Additional System-Specific Basis for Determinations
The Division established Fire Storage requirements based on information from Kevin Nunn on August 15, 2022.
Storage Capacity
Based on the System’s storage facilities and the storage minimum sizing requirement established in this letter, the Director hereby determines that the System is compliant with the minimum
storage capacity requirements.
Source Capacity
The Division has adequate documentation of established safe yields (wells) for all the System’s sources. Using total system-wide safe yields and the source minimum sizing requirement
established in this letter indicates that the System is compliant with minimum source capacity requirements.
Effective Date
The determinations made in this letter are effective immediately and will become final 30 days from the date of this letter unless the System files a contest as provided below.
Notice of Right to Contest
The Director has determined this determination made under Section 19-3-114 qualifies as a “permit order” within the meaning of Utah Code Section 19-1-301.5(1)(f). See Utah Code § 19-1-301.5(1)(e)
(defining “permit” to include a “plan” or “other administrative authorization”).
The System may contest any determinations made herein by delivering a notice of contest to the Director. The notice of contest must be in writing and must be delivered to the Director
on or before 30 days after the date this letter is signed. There is no particular form for the notice of contest, but it must include the System’s reasons and rationale for the contest.
The Director’s address for purposes of submitting a notice of contest is as follows:
U.S. Mail
Division of Drinking Water

Attention: Director
P.O. Box 144830
Salt Lake City, UT 84114-4830
Email
A notice of contest may be submitted to the Director by email, provided, however, that the Director confirms receipt of the email. The Director’s email address is: [e-mail].
The email submission must be received by the Director before the expiration of the contest deadline.
If the System files a timely notice of contest, the Director will evaluate the matter and attempt to resolve the matter through negotiations. If the Director is not able to resolve the
matter, the Director will issue a final agency action regarding the contest. At that point in the process, the System shall have the right to seek further internal agency and judicial
review pursuant to Utah Admin. Code R305-7 and Utah Code Section 19-1-301.5.
Right to Request Reconsideration
The Director plans to evaluate the determinations made herein every three years. However, this requirement is not mandatory. At any time, a water system whose system-specific minimum
sizing standards have been established by the Division under Section 19-4-114 may request reconsideration of the Director’s determinations by submitting a written request. A request
for reconsideration shall be submitted to the Director in the same manner as a notice of contest provided above.
Conclusion
If the Systemmanagement has any questions regarding this letter, please contact Chris Martin, P.E.,of this office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
CMM/mrn/mdbEnclosures23003 11532 2025 Sizing Standard Calculationcc:Taylor Palmer, Tooele County Health Department, [e-mail] Palmer, Stansbury Park Improvement
District, [e-mail] Chris Martin, P.E., Division of Drinking Water, [e-mail] Black, Office of the State Fire Marshal, [e-mail] 23003 11532 2025
Sizing Standard Renewal