DDW-2024-006882

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Draft Letter:
Make a COPY of the template you want to use.
Rename it with your First Initial, Last Name, System # & File # (MNewberry 125033 12323 Approval)
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Draft Letter
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Source Protection Staff
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MNewberry
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Mar 25, 2024
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Marianne Booth
Mar 25, 2024
Date
Setting Sizing Standard (Updated 1/10/2024)
template with built-in ENG A Workflow: Staff → Eng Manager → Mailing
Instructions for DDW Internal Use:
Before forwarding this workflow in D2, please check off the steps you’ve completed, addnotes (e.g., “not applicable”), and initial in the box below.
1.Draft standards sent to water system with review period (documentation in D2)
2.Fire Storage requirement from local fire authority
3.Fire Storage requirement in WaterLink
4.Fire Storage documentation in D2 (labeled as Fire Demand and date)
5.Finalize the Standards of the Water Use Module
6.Download the .pdf of the Final Version and File in D2
7.WaterLink File ― Enter “Complete - Standard Set” to the project description
8.WaterLink ― document minimum sizing standards
9.D2 – all related documents put into D2 10.Attached Minimum Sizing Standards Summary Report to the letter
Support Staff: Delete This Page Before Mailing
Mar 25, 2024
Via Email: [e-mail]
Michael Johanson
Cottonwood Mutual Water Company
4000 West Old Highway Road
Morgan, Utah 84050
Subject:2024 System-SpecificMinimum Sizing Standards—Final Determination
Cottonwood Mutual, System #15013, File #11901
Dear Michael Johanson:
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 Cottonwood Mutual (the
System):
Peak Day Source Demand (gallons/day/ERC) – 946
Average Annual Demand (gallons/year/ERC) – 124,430
Equalization Storage (gallons/ERC) – 341
Fire Storage (gallons) – 500,000
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 March 14, 2024. The System provided comments on March 22,
2021. 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
Cottonwood Mutual Water System is a public water system located in Morgan County serving a population of approximately 3,145 customers. They utilize several storage tanks and wells to
provide drinking water to their customers.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, actual water use data was available through DWRi,
and an engineering study was not submitted to the Division for review. Therefore, the Division has relied upon DWRi information and other relevant data.
Additional System-Specific Basis for Determinations
The Division established Fire Storage requirements based on information previously provided by the System.
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 iscompliant with the minimum
storage capacity requirements.
Source Capacity
The Division has adequate documentation of established safe yields 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 Cameron Draney, P.E., of this office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
CLD/mrn/Admin (processing)/Admin (mailing) [Initials]EnclosuresUtah Department of Environmental Quality Division of Drinking Water Minimum Sizing Standards Summary Reportcc:Scott Braeden,
Weber-Morgan Health Department, [e-mail] Johanson, Cottonwood Mutual, [e-mail] White, P.E., Gardner Engineering, [e-mail] Draney,
P.E., Division of Drinking Water, [e-mail] Black, Office of the State Fire Marshal, [e-mail] Standard - A