DDW-2024-014699

December 23, 2024
Zachary Root
North Logan City
2525 North 600 East
North Logan City, Utah 84341
Subject:Plan Approval, Well Equipping for Green Canyon Well #5 (WS010) and Green Canyon Well #5 Chlorinator (TP010); North Logan City, System #03015, File #12963
Dear Zachary Root:The Division of Drinking Water (the Division) received the plans and specifications for equipping the Green Canyon Well #5 (WS010) and adding the Green Canyon Well
#5 Chlorinator (TP010) from your consultant, Lance Anderson, P.E. of Cache Landmark Engineering on September 20, 2024. Written review comments were provided to your consultant on November
12, 2024. The Division received the revised plans and specifications on December 12, 2024. This project has met the conditions for receiving a plan approval.
The letter includes the following sections and addenda:

Project Summary    
Plan Approval
Well Approval Checklist
Operating Permit Checklist 
FutureMonitoring and Reporting Requirements (Addendum 1) Project Summary
Our understanding of the project is the construction of the well house, discharge piping, and gas chlorinator for the Green Canyon Well #5 (WS010). The well was drilled to approximately
790 feet below ground surface. The Green Canyon Well #5 (WS010) will be equipped with a 1,750 gallon per minute (gpm) vertical turbine pump. The well will mix with the other Green Canyon
Wells and the Green Canyon WTP (TP004) before going into the distribution system.
The equipped well pump capacity of the Green Canyon Well #5 (WS010) is 1,750gpm. During well development the Green Canyon Well #5 had a constant-rate aquifer drawdown test conducted
at 1,985 gpm for 24 hours stabilized drawdown was not reached. Stabilized drawdown is defined as less than one foot of change of groundwater level in the well within a six-hour period.
Based on projections completed in the Drilling, Construction, and Tests of the Green Canyon Well No. 5 Report, the safe yield of Green Canyon Well #5 (WS010) is rated at 1,067gpm, which
is calculated based on two-thirds of the projected stabilized drawdown at 1,600 gpm. The safe yield of 1,067gpm is the basis for determining the maximum number of connections that Green
Canyon Well #5 (WS010) can serve.
The plan review of the proposed Green Canyon Well #5 Chlorinator (TP010)has been completed according to the following:
The proposed Green Canyon Well #5 Chlorinatoris a gas chlorinator
This chlorinator will add chlorine to the water from Green Canyon Well #5 (WS010).
This chlorinator is intended to provide secondary disinfection in the distribution system. 
The chlorinated water will go to the Green Canyon Reservoir 1 (ST001) and Green Canyon Reservoir 2 (ST002) where it then flows into the distribution system. Additionally, the other Green
Canyon Wells and the Green Canyon WTP (TP004) also go through the two storage tanks as well.
The proposed gas chlorine used for disinfection meets the ANSI/NSF 60 standard.
The proposed design target dose is yet to be determined. The dose of the chlorinator will be decided after it comes online, and the chlorine levels can be determined after mixing with
the other Green Canyon Wells and Green Canyon WTP (TP004).
The chlorine dose will be adjusted by an automatic flow-paced Regal Smart Valve (Model 7001).
The Point of Entry (POE) sampling location will be the continuous chlorine analyzer located at the Green Canyon Reservoir 1 (ST001) and Green Canyon Reservoir 2 (ST002). This location
is also the POE for the Green Canyon WTP (TP004).
We have received the following information for equipping Green Canyon Well #5 (WS010) and Green Canyon Well #5 Chlorinator (TP010):
Certification of well seal.
Well driller’s report (well log).
Drilling, Construction, and Testing of the Green Canyon Well No. 5 Report prepared by Bowen, Collins & Associates dated November 2023 summarizing the aquifer drawdown test results (step
drawdown test and constant-rate test).
New Source Chemical Analysis of the well water.
Plans and specifications for equipping the well.
Pump information
Well head discharge piping.
Well house design.
Gas Chlorinator design plans and specifications
Plan Approval for equipping the Green Canyon Well #5 (WS010) and Green Canyon Well #5 Chlorinator (TP010)
We have completed our review of the plans and specifications, stamped, and signed by Lance Anderson, P.E., dated July 12, 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 equipping the Green Canyon Well #5 (WS010) and Green Canyon Well #5 Chlorinator
(TP010)are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before the Green Canyon Well #5 (WS010) and Green Canyon Well #5 Chlorinator (TP010)
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, a 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 Monitoring Requirements
A radionuclide sample was not included in the initial new source chemistry analysis. Prior to the issuance of an operating permit, please submit a radionuclide sample from the a radionuclide
sample will be Green Canyon Well #5 (WS010).

Secondary Disinfection Requirements
The Division has determined that North Logan Citymust provide continuous disinfection to maintain detectable chlorine residuals throughout the distribution system due to North Logan
City treating surface water.The proposed Green Canyon Well #5 Chlorinator (TP010)is intended to maintain a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed Green Canyon Well #5 Chlorinator (TP010) is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after
the Operating Permit issuance, North Logan City will be required to demonstrate ongoing compliance with the secondary disinfection requirements that are 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 North Logan City is found to requireadditionaldisinfection 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.
If you have any questions regarding this approval, please contact Dani Zebelean, P.E., of this office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
DZ/mrn/mdbEnclosures –Well Approval ChecklistOperating Permit ChecklistAddendum 1- Future Monitoring and Reporting Requirementscc:Ben Harker, Bear River Health Department, [e-mail]
Anderson, P.E., Cache Landmark Engineering, [e-mail] Root, North Logan City, [e-mail] Zebelean, P.E., Division of Drinking Water, [e-mail]
Cameron Draney, P.E., Division of Drinking Water, [e-mail]
Hunter Payne, Division of Drinking Water, [e-mail]
Luke Treutel, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]
Dylan Martinez, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail] 03015 12963 PA Equipping WS010 and PA TP010Division of Drinking WaterChecklist for New Public Drinking Water
Wells
(Per Utah Administrative Code, Rule R309-515-6)
System Name: North Logan CitySystem Number: 03015Well Name & Description: Green Canyon Well #51.Approval to Drill the Well
☒Project Notification Form (PNF)
☒Preliminary Evaluation Report (PER) concurrence
☒Well drilling specifications and plans
☒Valid Start Card or authorization to drill letter from the Division of Water Rights2.Approval to Equip the Well
☒PNF (if the well drilling and well equipping are designed by different consultants)
☐Well location data - Will be entered with DWSP by Source Protection during OP Request
☒Certification of well seal
☒Well driller’s report (well log)
☒Aquifer drawdown test results (step drawdown test & constant-rate test) for well yield determination
☒Chemical analyses of the well water
☒Plans and specifications for equipping the well
☒Pump information (e.g., pump specifications, pump curve & operating point, motor information, etc.)
☒Well head discharge piping
☒Well house design3.Operating Permit to Introduce the Well Water
☒Documentation of valid water right(s)
☐Recorded land use agreements, or documentation that the requirements for coverage under the City/County source protection ordinance have been met
☐Design engineer’s certification of conformance with plan approval conditions
☐Design engineer’s certification of rule conformance for any deviation from approved plans
☐As-built or record drawings
☐Evidence of O&M manual delivery to system owner☐Satisfactory bacteriological results as evidence of proper flushing and disinfection
Utah Division of Drinking Water ― Checklist for Issuing Operating PermitsWater System Name:North Logan CitySystem Number: 03015Project Description: Green Canyon Well #5 And
ChlorinatorFile Number:12963
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. A radionuclide sample will be required prior to the issuance of an operating permit. ☐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 Secondary Monitoring and Reporting Requirements
Chlorine Monitoring & Reporting Requirements
The water system will be required to meet secondary 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 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 value of chlorine residual measured as free chlorine at the POE sampling location (EP010). [R309-215-10(1)]Our records show that your water system serves
8,500 people. Please be aware that R309-215-16(3)(b)(iii)(A)(I) requires water systems serving greater than 3,300 people to continuously monitor the POE chlorine residuals. Therefore,
an online analyzer to continuously monitor the POE chlorine residuals entering the distribution system will be needed.
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.
The monthly operational reports are submitted quarterly. The reports are due to the Division by the 10th day following the end of each reporting quarter (i.e., January 10th, April 10th,
July 10th and October 10th). The reports can be submitted by hardcopy, fax, or by uploading them to the Division’s chlorine residual reporting form which can be found at MRDL.utah.gov.
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)]