DDW-2024-007856

May 30, 2024
Chance Duane Baxter
Bear River Water Conservancy District
102 West Forest Street
Brigham City, Utah 84302
Subject:Operating Permit, Flat Canyon Well (WS003), Flat Canyon Well Chlorinator (TP003), South Booster Station Pump Addition (PF002) and New Transmission Line;
Bear River Water Conservancy District - Collinston System, System #02079, File #13340
Dear Chance Baxter:
The Division of Drinking Water (the Division) received a request for an Operating Permit for Flat Canyon Well, Flat Canyon Well Chlorinator, and South Booster Station Pump Addition from
your consultant, Ridley Griggs, P.E., with Hansen, Allen, and Luce on May 1, 2024. The Division issued Plan Approval for this project on October 19, 2023. This project has met all conditions
for receiving an operating permit.
The letter includes the following sections and addenda:

1. Project Summary for Flat Canyon Well (WS003) and New Transmission Line
2. Project Summary for Flat Canyon Well Chlorinator (TP003)
3. Project Summary for South Booster Station Pump Addition (PF002)
4. Operating Permit for Flat Canyon Well, Flat Canyon Well Chlorinator, South Booster Station Pump Addition, and New Transmission Line.
5. Secondary Disinfection Requirements
6. Monitoring and Reporting
7.Elective Monitoring and Reporting Requirements (Addendum 1)
Project Summary for Flat Canyon Well (WS003) and New Transmission Line
We understand that this project consisted of equipping the Flat Canyon well with a 150-gallon per minute (gpm) submersible pump with a 40-horsepower (hp) motor and installing associated
discharge piping. The well was equipped with a pitless adapter unit and flows to a new vault containing an air valve, sample tap, pressure gauge, check valve, flow meter, and shut-off
valve. A new valve vault was constructed downstream from the well vault which contains the pump-to-waste line and associated valves. The Flat Canyon Well is identified as WS003 in the
Division’s database.
A new 6-inch diameter HDPE transmission line connects the new valve vault to an existing water line and then to the water system’s South Booster Station (PF002). The new transmission
line consists of approximately 6,800 linear feet of 6-inch diameter HDPE, flushing hydrants, air release valves, and one above-ground discharge to a horse water trough with an appropriate
air gap and screen.
The equipped well pump capacity of Flat Canyon Well is 150 gpm. The safe yield of Flat Canyon Well is rated at 100 gpm, which is calculated based on two-thirds of the constant-rate aquifer
drawdown test results at 150 gpm. The safe yield of 100 gpm is the basis for determining the maximum number of connections that Flat Canyon Well can serve.
Project Summary for Flat Canyon Well Chlorinator (TP003)
Our understanding of the project included the addition of a new gas chlorination facility within the South Booster Station. The new chlorinator consists of a Regal 210 gas chlorine system,
a dual-cylinder electronic scale, and two 150-pound chlorine cylinders. The chlorine feed line will dose a new 1-inch diameter PVC chlorine booster pump supply line. A new 150 gpm, 10
hp Grundfos booster pump will pull water from the discharge side of the South Booster Station pumps through the supply line and inject the chlorinated water back into the same line.
The Flat Canyon Well Chlorinator (TP003) included in this project has been completed according to the following:
The Flat Canyon Well Chlorinator is a gas chlorinator intended to provide elective disinfection.
The Flat Canyon Well Chlorinator treats water from the Flat Canyon Well (WS003).
The chlorine gas is added to the water at the South Booster Station (PF002).
The chlorinated water then enters the South Tank (ST002) and flows into the distribution system.
The chlorine gas used for disinfection meets the ANSI/NSF 60 standard.
A design target dose of 2.0 mg/L (ppm) of free chlorine is based on a typical flow of 150 gallons per minute (gpm) from Flat Canyon Well.
The chlorine dose is adjusted manually based on the flow from Flat Canyon Well.
The Point of Entry (POE) sampling location will be a sample tap within the South Booster Station.
Project Summary for South Booster Station Pump Addition (PF002)
As part of this project, an additional 150 gpm, 10 hp centrifugal pump was installed at the water system’s existing South Booster Station (PF002) on an existing vacant pump bay. The
new pump was installed in parallel with the two existing pumps within the pump station.
Operating Permit for Flat Canyon Well, Flat Canyon Well Chlorinator, South Booster Station Pump Addition, and New Transmission Line
We have received the following information for Flat Canyon Well, Flat Canyon Well Chlorinator, South Booster Station Pump Addition, and the new transmission line:
Design engineer’s statement of conformance with approval conditions.
Documentation of valid water rights.
Evidence of O&M manual delivery.
Record drawings.
Documentation that the requirements for coverage under the Box Elder County source protection ordinance have been met.
Satisfactory bacteriological results as evidence of proper disinfection and flushing.
Water quality data required in the Plan Approval letter issued for this project.
We have determined that all conditions for issuing an operating permit have been met. On this basis, an Operating Permit for Flat Canyon Well, Flat Canyon Well Chlorinator, South Booster
Station Pump Addition, and the new transmission lineis hereby issued as constituted by this letter. You may now place these facilities in service in your water system.
Please maintain a copy of this letter with your permanent records for future reference.
Secondary Disinfection Requirements

The Bear River Water Conservancy District - Collinston System has elected to install the Flat Canyon Well Chlorinator (TP003) and must provide continuous disinfection to maintain detectable
chlorine residuals throughout the distribution system for secondary disinfection. The water systemis not currently required to disinfect the Flat Canyon Well (WS003) based on available
bacteriological source sample results.
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 that, if any water source of the Bear River Water Conservancy District - Collinston System is found to require primary disinfection in the future per R309-200-5(7)(a)(i),
additional regulations will apply. 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.
The Bear River Water Conservancy District - Collinston System is required to demonstrate ongoing compliance with the secondary disinfection requirements found in Addendum 1 as long as
the Flat Canyon Well Chlorinator (TP003) is in operation.
Monitoring and Reporting
Issuance of this Operating Permit changes your water system’s monitoring and reporting requirements.
Additional monitoring and reporting requirements are found in Addendum 1 to this letter. Please contact Mark Berger, Water Quality/Monitoring and Standards Manager, at [phone]
for questions regarding the monitoring and reporting requirements for your water system. 
There may be new changes in monitoring and reporting requirements in the future as the Division continues to improve the disinfection monitoring and reporting practices. Failure to adhere
to required monitoring and reporting will result in violations and the assessment of IPS points.
If you have any questions regarding this Operating Permit, please contact Hunter Payne, of this office, at [phone], or Michael Newberry, Permitting and Engineering Support Manager,
at [phone].
Sincerely,
Russell Seeley, P.E.
Assistant Director
HP/mrn/mdbEnclosures –    Addendum 1- Monitoring and Reporting Requirementscc:Ben Harker, Bear River Health Department, [e-mail] Griggs, P.E., Hansen, Allen, and Luce,
[e-mail] Baxter, Bear River Water Conservancy District, [e-mail] Payne, Division of Drinking Water, [e-mail] Treutel, Division of Drinking
Water, [e-mail] Kruse, Division of Drinking Water, [e-mail] Federico, Division of Drinking Water, [e-mail] Beck, P.G., Division of Drinking
Water, [e-mail] 02079 13340 OP WS003 PF002 TP001
Addendum 1 
Elective Monitoring and Reporting Requirements 
Chlorine Monitoring & Reporting Requirements
The water system is required to meet elective disinfection requirements. As a part of these requirements, the water system is required 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 is identified as EP003 in the Division’s database. This location has been identified as the South Booster Station (PF002). 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 secondary 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)]
Routine Source Monitoring
Issuance of this Operating Permit changes your water system’s monitoring and reporting
requirements. The monitoring requirements for the Flat Canyon Well (WS003) are given below. An updated monitoring schedule can be viewed any time at waterlink.utah.gov under the Water
Monitoring section. Please contact David Kruse at (385)-566-7789 or [e-mail] for questions regarding the source monitoring and reporting requirements for your water system.Facility
with new requirementsAnalyte(s) Required# of samplesSampling FrequencyNext Due DateRule ReferenceWS003 Flat Canyon WellInorganics & Metals1Every three years01/01/2026-12/31/2028R309-205-5(3)(a)Nitrate1Yearly01/01/2025-12/31/2025R309-205-5(4)(a)Sulfate,
Sodium, TDS1Every three years01/01/2026-12/31/2028R309-205-5(3)(a)Pesticides1Every three years01/01/2026-12/31/2028R309-205-6(1)(f)Radionuclides1Quarterly07/01/2024-09/30/2024R309-205-7(1)(b)Volatile
Organic Contaminants1Yearly01/01/2025-12/31/2025R309-205-6(2)
Source Bacteriological Monitoring 

This water system is required to take monthly bacteriological samples of the Flat Canyon Well (WS003) prior to any treatment, for the months the spring is (in operation or accessible).
The source sampling requirement shall begin in June 2024 and last at least 12 months.
The purpose of the source sampling requirement is to gather data to evaluate the quality of the source water from Flat Canyon Well (WS003) and determine whether primary disinfection
treatment is required or not.
Label the source samples with WS003 as the sampling location.
The required source bacteriological sampling is shown on your monitoring schedule for this sample site.
Please note that the source sampling is in addition to the distribution system bacteriological sampling already in place, which is labeled DS001.
After two seasons of source sampling data become available, the Division will evaluate the results to determine whether primary disinfection is required for Flat Canyon Well (WS003).
Please contact Sitara Federico for any positive samples that may occur at the source at 385-515-1459 or [e-mail]. If any sample result comes back as E. coli positive, please
contact the Division within 24 hours of being notified of the result.