DDW-2024-006896

March 28, 2024
Cynthia Degrey
Spring City
P.O. Box 189
Spring City, Utah 84662
Subject:Plan Approval, Spring City Culinary Water Improvement Project 2024, Canyon Tank (ST004), Canyon Chlorinator (TP002); Spring City, System #20008, File #13639 & 13640, SRF #3F1926
Dear Cynthia Degrey:The Division of Drinking Water (the Division) received the plans and specifications for the proposed Spring City Culinary Water Improvement Project 2024 from your
consultant, Jason Brimhall with Sunrise Engineering on February 27, 2024. Written review comments were provided to your consultant on March 11, 2024. The Division received the revised
plans and specifications on March 20, 2024. This project has met the conditions for receiving a plan approval.
Our understanding of the project is that approximately 10,000 feet of distribution piping along with the associated isolation valves, fire hydrants, and service connections will be replaced
within the existing distribution system. The Upper South Well (WS006) and the Upper North Well (WS009) will have the submersible pumps replaced and new meters put in the well discharge
piping at each well. A new 500,000 gallon concrete tank, Canyon Tank (ST004), will be constructed east of town adjacent to the Spring City Canyon Road and a new gas chlorinator, Canyon
Chlorinator (TP002), will be constructed immediately upstream of the new Canyon Tank. Canyon Tank will be identified as ST004 and Canyon Chlorinator will be identified as TP002 in the
Division’s database.
The plan review of the proposed Canyon Chlorinator (TP002)has been completed according to the following:
The proposed Canyon Chlorinator is a gas chlorinator.
This chlorinator will add chlorine to the water from WS001, WS002, WS003, WS004, WS006, WS008 and WS009.
This chlorinator is intended for elective disinfection as preventative maintenance in the distribution system.
The chlorinated water will go directly to Canyon Tank (ST004) and then to Upper Zone East Tank (ST003) and Upper Tank (ST002).
The proposed gas chlorination for disinfection meets the ANSI/NSF 60 standard.
The proposed design target dose of 0.5 mg/L or ppm (measured as free chlorine) is based on an average flow of 110 gallons per minute (gpm) from the Spring Sources.
The chlorine dose will be adjusted by an automatic flow-paced control that will match the chlorine dose to the spring and well flows.
The Point of Entry (POE) sampling location will be at the City Maintenance Shop located at 740 East 50 South.
The Spring City Water Systemis not required to disinfect water sources WS001, WS002, WS003, WS004, WS006, WS008, and WS009 based on bacteriological source sample results currently available.
The water system proposes to electively install the Canyon Chlorinator (TP002) to provide a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed Canyon Chlorinator (TP002) is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after the Operating
Permit issuance, the Spring City Water System will be required to demonstrate ongoing compliance with the secondary disinfection requirements that will be outlined in Addendum 1 to this
letter.
The Division shall be informed by telephone within 8 hours by a water supplier ofthe malfunction of any disinfection facility such that a detectable residual cannot be maintained at
all points in the distribution system per R309-105-18(1)(a).
Please be aware if Spring City’s active water sources are found to require additionaldisinfection in the future per R309-200-5(7)(a)(i), further regulations will apply. For example,
if primary disinfection is required this will include submitting disinfection CT information showing compliance with 4-log virus inactivation in accordance with the Ground Water Rule
in R309-215-16.
We have completed our review of the plans and specifications, stamped, and signed by Jesse Ralphs, P.E., dated February 22, 2024,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 Spring City Culinary Water Improvements Project 2024are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before the Spring City Culinary Water Improvements Project 2024 may be put into 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.Source Protection RequirementsA
revised Drinking Water Source Protection (DWSP) Plan is required within 180 days after the reconstruction or redevelopment of any groundwater source (R309-600-7(f)), including the installation
of a pump with an increased maximum pump rate, which will change the delineation of the source protection zones. The Upper South Well (WS006) will need to delineate the source protection
zones based on the 70-gpm max pump rate. The Artesian Well North (WS007) was delineated using 150 gpm. If the installed pump has a maximum pump rate higher than 150 gpm, the Artesian
Well North will need to be delineated at the higher pump rate.If you have any questions regarding the Source Protection requirements, please contact Melissa Noble at [e-mail]
or [phone] or call the Division of Drinking Water at [phone] and ask for source protection staff.
The project, as described herein, is generally eligible for assistance under the Drinking Water Construction Assistance Program. All change orders will need to be reviewed and approved
for compliance with the Drinking Water Rules and the conditions of this construction approval.
The project may now be advertised for bids. But, as a condition of the project funding, you must not award the contract or proceed with construction until the Division of Drinking Water
has authorized you to do so. This is necessary to comply with applicable requirements and to protect you, as the funding recipient, by ensuring that the contract meets the requirements
for funded projects.
Federal regulations require that a concerted effort must be made to encourage the participation of small and disadvantaged business enterprises (DBE) by providing requisite information,
including plans and specifications on the project. In order to provide opportunities to DBE subcontractors, utilization goals for Minority-owned Business Enterprises (MBE) and Women-owned
Business Enterprises (WBE) have been determined to be 4% and 2%, respectively. As outlined in the contract documents, the prime contractor must submit a list of prepared MBE/WBE subcontractors
to be used on this project and documentation of solicitation efforts with the bid. The prime contractor's efforts to provide opportunities to DBEs must be reviewed and approved by this
office before the contract can be awarded.
If you have any questions regarding this approval, please contact John Chartier, DEQ Central District Engineer, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.

Permitting and Engineering Support Manager
JLC/LT/mrn/mdbEnclosures –Operating Permit ChecklistAddendum 1cc:Eric Larsen, Central Utah Public Health Department, [e-mail] Jason Brimhall, Sunrise Engineering,
Inc., [e-mail] Jesse Ralphs, P.E., Sunrise Engineering, Inc., [e-mail] Cynthia Degrey, Spring City, [e-mail] John Chartier, P.E.,
Department of Environmental Quality, [e-mail]
Luke Treutel, Division of Drinking Water, [e-mail]
Kjori Shelley, Division of Drinking Water, [e-mail]
Linda Ross, Division of Drinking Water, [e-mail] jchartier 20008 13639 13640 PAPA - Basic
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
Addendum 1 
Future Elective Monitoring and Reporting Requirements
Chlorine Monitoring & Reporting Requirements
The water system will be required to meet elective disinfection requirements once this facility is installed and operating. As a part of these requirements, the water system will need
to continuously maintain a minimum free chlorine residual at each chlorinator Point of Entry (POE) into the system and demonstrate a detectable chlorine residual in the distribution
system. 
Elective Disinfection Requirements and Reporting 
Chlorine Residual ‒ Point of Entry (POE) to Distribution System
The POE sampling location will be identified as EP002 in the Division’s database. The location will be identified during the plan approval process. Maintain a minimum of 0.2 mg/L residual
(measured as free chlorine) at the POE sampling location. [R309-215-16(3)(b)(iii)(A)(I) and (II)]
The chlorine residual concentration measured at the POE sampling location shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)]
Record and report the lowest daily chlorine residual concentration, measured as free chlorine, at the chlorinator POE sampling location a minimum of three (3) times per week. [R309-210-
8(3)(a)(ii)]
Chlorine Residual ‒ Distribution System (DS001)
This water system must maintain a detectable residualthroughout the distribution system. It is recommended to maintain the chlorine residual above 0.1 ppm in the distribution system.
[R309-520-5]The chlorine residual measured in the distribution system shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)]
This water system must take a minimum of three (3) chlorine residual samples per weekat varying locations throughout its distribution system (DS001). [R309-105-10(1)(c)]
Distribution system chlorine residuals must be taken in conjunction with total coliform sampling. [R309-215-10(3)]
Disinfection Report Submission
To demonstrate ongoing compliance with elective disinfection requirements, the water system must complete monthly operational reports for each active chlorinator using a template approved
by the Division. 
Operational reports are submitted quarterly. The reports are due to the Division by the 10th day following the end of each reporting month or quarter (i.e., January 10th, April 10th,
July 10th, and October 10th for quarterly reports). The reports can be submitted by hardcopy, fax, or email at [e-mail]. Please contact Luke Treutel at [phone] or [e-mail]
to schedule training regarding proper reporting. 
In addition to monthly disinfection reporting, this water system must submit the monthly average of chlorine residual samples taken in the distribution system. Distribution system chlorine
residual monitoring results are due quarterly by the same compliance dates as the monthly disinfection report and can be submitted via an online form found at mrdl.utah.gov. 
Records must be maintained for a minimum of 5 years. [R309-105-17(1)]
Disinfection Byproducts Monitoring & Reporting Requirements
In addition to the chlorine monitoring and reporting described above, the system will be required to monitor disinfection byproducts as a result of introducing disinfection to the system.
According to our records, the water system serves a population of approximately 950 people and serves groundwater from the system’s source(s). Based on this information, the water system
will be required to collect samples from two (2) Disinfection Byproduct (DBP) sampling sites per year. Each disinfection byproduct sample should be a paired sample of Total Trihalomethanes
(TTHM) and Haloacetic Acids (HAA5).
Water system staff will need to select two (2) sites to be sampled for DBPs. A sampling plan form will be enclosed with the operating permit letter and will need to be completed and
submitted to the Division within 30 days from the date of the operating permit letter. The specifics relating to the number and frequency of required samples will be provided in the
operating permit letter.