DDW-2025-002898

March 28, 2025
Teresa Gray
Salt Lake City Water System
1530 South West Template
Salt Lake City, Utah 84115
Subject:Plan Approval, Millcreek Well (WS041) Pump Conversion and Well House expansion;Salt Lake City Water System, System #18026, File #19709Dear Teresa Gray:The Division of Drinking
Water (the Division) received the plans and specifications for the proposed Millcreek Well (WS041) Pump Conversion and Well House expansion from Jordan DeMann of Horrocks Engineers on
February 25, 2025. Updated information about the project was provided to the Division on March 24, 2025. This project has met the conditions for receiving plan approval.
Our understanding of the project is that SLCPU intends to reactivate the Millcreek Well (WS041). The well was in “inactive” status because the Millcreek Well (WS041) needed repair for
proper functioning. Salt Lake City needs to put the well in service as the demand of water will increase in coming summer months.
The old 400 HP submersible pump will be replaced by a newly designed vertical turbine pump (Nickerson H14MC 6-Stage, 14.1 inch). The new pump is rated at 358 HP to deliver 2,500 gallons
per minute (gpm) with 472 feet TDH and feeds water to the distribution system.
SLCPU also proposes expanding this well house with the addition of a chlorine room so chlorination equipment can be installed in future. Chlorinator plans and specs will be submitted
to the Division for approval when needed. In addition, this well house will also be converted from a medium voltage to a low voltage facility.
We have completed our review of the plans and specifications; stamped and signed by Jordan DeMann, P.E., dated February 25, 2025,and find they basically comply with the applicable portions
of Utah’s Administrative Rules for Public Drinking Water Systems in R309. On this basis, the plans for the Millcreek Well (WS041) Pump Conversion and Well Houseare hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before the Millcreek Well (WS041) Pump Conversion and Well House expansion project
may be put in service. A checklist outlining the items required for operating permit issuance is enclosed for your information.Approvals or permits from the local authority or the county
may be necessary before beginning construction of this project. As the project proceeds, notice of any changes in the approved design, as well as any change affecting the quantity or
quality of the delivered water, must be submitted to the Division. We may also conduct interim and final inspections of this project. Please notify us when actual construction begins
so that these inspections can be scheduled.
This approval must be renewed if construction has not begun or if substantial equipment has not been ordered within one year of the date of this letter.
If you have any questions regarding this approval, please contact Nagendra Dev, P.E., of this office, at [phone], or Michael Newberry, P.E., Engineering Manager, at [phone].

Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
ND/mrn/mdbEnclosures –Operating Permit Checklistcc:Matthias Neville, Salt Lake County Health Department, [e-mail] DeMann, Horrocks Engineers, [e-mail]
Teresa Gray, Salt Lake City Public Utilities, [e-mail]
Nagendra Dev, P.E., Division of Drinking Water, [e-mail] NDev PA WS014 pump conversion 18026 19709
Utah Division of Drinking Water ― Checklist for Issuing Operating PermitsWater System Name:System Number: Project Description:File Number:
Items 1 through 8 below must be submitted to the Division and found to be acceptable prior to operating permit issuance (unless a water line project meets the requirements of R309-500-7
and is not required to obtain an Operating Permit).
Distribution lines (not including in-line booster pump stations) requiring Plan Approval may be placed into service prior to submitting all of the following items and receipt of Operating
Permit if the water system has received items 1 and 4 below.☐1.Certification of Rule Conformance by a professional engineer (P.E.) that all conditions of Plan Approval were accomplished,
and if applicable, changes made during construction were in conformance with rules R309-500 through 550☐2.As-built or record drawings incorporating all changes to approved plans and
specifications (unless no changes were made to the previously approved plans during construction)☐3.Confirmation that as-built or record drawings have been received by the water system☐4.Satisfactory
bacteriological samples as evidence of proper disinfection and flushing in accordance with the appropriate ANSI/AWWA standards:
☐ANSI/AWWA C651-14 AWWA Standard for Disinfecting Water MainsTwo consecutive sample sets at least 16 hours apart, none positive (e.g., every 1,200 feet, end-of-line, each branch)☐ANSI/AWWA
C652-11 AWWA Standard for Disinfection of Water-Storage FacilitiesOne or more samples, none positive☐ANSI/AWWA C653-13 AWWA Standard for Disinfection of Water Treatment PlantsTwo consecutive
samples per unit, none positive, no less than 30 minutes apart☐ANSI/AWWA C654-13 AWWA Standard for Disinfection of WellsTwo consecutive samples, none positive, no less than 30 minutes
apart☐5.Water quality data, where appropriate [For example, include raw and finished water data that demonstrate satisfactory performance of the treatment facility; sample should be
taken from a storage tank for residual volatile organic compounds after tank interior re-coating; etc.]☐6.If applicable, all other documentation that may have been required during the
plan review process☐7.If applicable, confirmation that the water system owner has received the O&M manual for the new facility☐8.If applicable, location data of new storage tank, treatment
facility, or source