DDW-2025-001733

Feb 18, 2025
Chance Baxter
Bear River Water Conservancy District
102 W Forest Street
Brigham City, UT 84302
Subject:Plan Approval, Harper Ward Well Equipping and Harper Ward Chlorinator (WS002, TP001); Bear River WCD - Harper Ward, System #02068, File #13615, SRF #3S1849
Dear Chance Baxter:The Division of Drinking Water (the Division) received the plans and specifications for Harper Ward Well and Chlorinator on December 27, 2024. Written review comments
were provided to your consultant on January 21, 2025. The Division received the revised plans and specifications on January 23, 2025 as well as constant rate drawdown data, a grout seal
certification letter, and new source chemistry analysis results. This project has met the conditions for receiving a plan approval.Project Summary for Harper Ward Well
Our understanding of the project includes equipping Harper Ward Well with a 1,500 gallon per minute (gpm) pump and a 200 horsepower (HP) motor. The project includes construction of a
new well house to protect the well pump and discharge piping, as well a separate room to house the new Harper Ward Chlorinator. A well pre-lube system consisting of a small booster pump
and a hydropneumatic tank will also be installed. The well discharge piping will include a pump to waste line which will terminate with an air gap at a nearby drain box. This well is
identified as WS002 in the Division’s database.
We have received the following information for the Harper Ward Well:
Certification of well seal.
Well driller’s report (well log).
Aquifer drawdown test results (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.
Chlorinator design.Project Summary for Harper Ward Chlorinator
Our understanding of the project includes installing a new chlorinator in a separate room of the new well house. The chlorinator will consist of two 150-pound chlorine gas tanks on a
scale, an automatic switchover, and a gas rotameter and control valve. The chlorine gas will be injected in a small supply line pulling from the Harper Ward Well discharge piping. The
Harper Ward Chlorinator is identified as TP001 in the Division’s database.
The plan review of the proposed Harper Ward Chlorinator (TP001) has been completed according to the following:
The proposed Harper Ward Chlorinator is a gas chlorinator.
This chlorinator will add chlorine to the water from Harper Ward Well (WS002).
This chlorinator is intended for elective secondary disinfection.
The chlorinated water will flow to the Harper Ward Tank (ST001) and then to the distribution system.
The proposed chlorine gas to be used 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 a typical flow of 1,500 gallons per minute (gpm) from Harper Ward Well.
The chlorine dose will be adjusted by a manually adjusted rotameter set based on the flow from Harper Ward Well.
The Point of Entry (POE) sampling location will be a sample tap in the valve vault located approximately 1,500 feet downstream from the Harper Ward Tank.
Plan Approval for Harper Ward Well and Chlorinator (TP001)
We have completed our review of the plans and specifications, stamped, and signed byAlea M. Nielson, P.E., dated December 24, 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 Harper Ward Well and Chlorinator are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before Harper Ward Well and Chlorinator 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.
Secondary Disinfection Requirements
The Bear River Water Conservancy District - Harper Wardis not required to disinfect the Harper Ward Well (WS002) based on bacteriological source sample results currently available. The
water system proposes to electively install the Harper Ward Chlorinator (TP001) to provide a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed Harper Ward Chlorinator (TP001) is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after the Operating
Permit issuance, the Bear River Water Conservancy District 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 of the 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 Harper Ward Well is found to require additional disinfection 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.Drinking
Water Construction Assistance Program
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 requirements
for funded projects. Preliminary Evaluation Report ConcurrenceThe Division has also reviewed the Preliminary Evaluation Report (PER) for this source submitted by your consultant on
January 30, 2024. The Division concurs with this report. This report must be refined, and a complete Drinking Water Source Protection (DWSP) plan submitted within one year of the date

of this letter. Refer to R309-600-13(6) and R309-600-7(1). Please contact Noah Zorsky, P.G., at [phone] or at [e-mail] if you have questions or concerns about the review
of your Preliminary Evaluation Report.
If you have any questions regarding this approval, please contact Hunter Payne, of this office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
HP/NAZ/mrn/klmEnclosures –Operating Permit ChecklistAddendum 1- Future Monitoring and Reporting Requirementscc:Grant Koford, Bear River Health Department, [e-mail] Nielson,
P.E., J-U-B Engineers, Inc., [e-mail] Baxter, Bear River Water Conservancy District, [e-mail] Payne, Division of Drinking Water, [e-mail]
Allyson Spevak, Division of Drinking Water, [e-mail]
Luke Treutel, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail]
Noah Zorsky, P.G., Division of Drinking Water, [e-mail]
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 in the Division’s database as EP001. 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 (EP001). [R309-215-10(1)]Our records show that your water system serves
a total of 3,105 people. Please be aware that R309-215-16(3)(b)(iii)(A)(II) requires water systems serving 3,300 people or fewer to monitor the POE chlorine residuals and take daily
grab sample(s). Alternatively, instead of taking daily grab samples, a groundwater system serving 3,300 or fewer people may choose to use an online analyzer to continuously monitor the
POE chlorine residuals entering the distribution system.
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)]
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 390 people and serves groundwater from the system’s sources. 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.
Source Bacteriological Monitoring 
The operating permit will include requirements for monthly Escherichia Coli (E. Coli) sampling at Harper Ward Well (WS002), prior to any treatment, for the months the Spring is in operation
or accessible for a minimum of two operating seasons. This monitoring is required to evaluate the quality of the water coming from Harper Ward Well (WS002) to determine whether primary
disinfection treatment is required or not. Additional monitoring and/or disinfection requirements may be assigned depending on the results of the assessment monitoring.
[Work with RTCR Rule Manager to set up the source sampling in SDWIS before forwarding this workflow for manager review in D2.]
The source sampling requirement shall begin no later than April 2025 and extend to cover the duration of at least 18 months, sufficient to span two (spring/summer or peak season) cycles.

The sampling location of the source water bacteriological samples needs to be labeled as WS002.
The source bacteriological sampling is in addition to the monthly total coliform sampling in the distribution system (DS001) that has been in place for your water system. 
The required source sampling data must be submitted to the Division for evaluation before a permanent operating permit can be issued for Harper Ward Chlorinator (TP001).
In the result of an E. coli positive sample, please contact Sitara Federico at [e-mail] or [phone] within 24 hours of notification.