DDW-2024-008984

July 16, 2024
Nicholas Nielson
Lynndyl Town
P.O. Box 40152
Lynndyl, Utah 84640
Subject:Plan Approval, Well Equipping, Lynndyl Town Well 1 (WS006) Lynndyl Town Well Chlorinator (TP006); Lynndyl Town, System #14008, File #13478, SRF #3S1858
Dear Nicholas Nielson:The Division of Drinking Water (the Division) received the plans and specifications for equipping the Lynndyl Town Well 1 from your consultant, Benjamin Coray with
Sunrise Engineering, on July 19, 2024. The Division issued Plan Approval for drilling the Lynndyl Town Well 1on August 29, 2023. Our understanding of the project is that a new well has
been drilled near the town’s existingstorage tanks and pump station. The new well has been drilled to a depth of 646 feet and 12-inch diameter casing was installed to a depth of 622
feet. The well will be equipped with a 20 HP submersible pump and motor capable of producing 300 gallons per minute (gpm) at 120 feet of total dynamic head. A MAASS Model MB pitless
unit will be installed on the wellhead. A new well house will be constructed and will include the well discharge piping appurtenances and a gas chlorination system. The Lynndyl Town
Well 1 is identified as WS006 in the Division’s database.
We have received the following information for the Lynndyl Town Well 1:
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.
20 hp submersible pump and motor that will produce 300 gpm at 120 feet of head.
Wellhead discharge piping.
Well house design
Gas Chlorination System
The plan review of the proposed Lynndyl Town Well Chlorinator (TP006) has been completed according to the following:
The proposed Lynndyl Town Chlorinator is a gas chlorination system.
This chlorinator will add chlorine to the water from the Lynndyl Town Well 1 (WS006).
This chlorinator is intended for voluntary chlorination of the Lynndyl Town Well 1.
The chlorinated water will go directly to Storage Facility ST001 and then be pumped to the distribution system through the Lynndyl Booster (PF001).
The proposed gas chlorine 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 300 gallons per minute (gpm) from Lynndyl Town Well 1.
The chlorine dose will be adjusted by a manually adjusted rotometer set for the constant flow from Lynndyl Town Well 1.
The Point of Entry (POE) sampling location will be in the Lynndyl Booster Station (PF001) located at 278 South 100 West. This location is prior to any connections in the distribution
system.
Plan Approval for Lynndyl Town Chlorinator (TP006)
We have completed our review of the plans and specifications, stamped, and signed by Benjamin Q. Coray, P.E., dated June 10, 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 Lynndyl Well 1are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before Lynndyl Well 1 (WS006) and Lynndyl Well Chlorinator (TP006) 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 (Voluntary) Disinfection Requirements
The Lynndyl Town Water Systemis not required to disinfect the Lynndyl Well 1 (WS006) based on bacteriological source sample results currently available. The water system proposes to
voluntarily install the Lynndyl Well Chlorinator (TP006) to provide a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed Lynndyl Well Chlorinator (TP006) is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after the Operating
Permit issuance, the Lynndyl Town Water System 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 Lynndyl Town Well 1 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.The project,
as described herein, is generally eligible for assistance under the state Drinking Water State Revolving Fund Financial Assistance Program. All change orders must be reviewed and approved
for compliance with the Drinking Water Rules, the conditions of this construction approval, and the DWSRF Program’s financial assistance requirements.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.
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/mrn/mdbEnclosures─ Addendum 1- Future Monitoring and Reporting RequirementsWell Approval ChecklistOperating Permit Checklistcc:Eric Larsen, Central Utah Public Health Department,
[e-mail] Benjamin Coray, P.E., Sunrise Engineering Inc., [e-mail] Nicholas Nielson, Lynndyl Town, [e-mail]
John Chartier, P.E., DEQ Central District Engineer, [e-mail]
Luke Treutel, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]
Sarah Page, PhD, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail]
Michael Grange, Division of Drinking Water, [e-mail]
Linda Ross, Division of Drinking Water, [e-mail] jchartier 14008 13478 PA WS006
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. 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 (EP006). [R309-215-10(1)]Our records show that your water system serves
130 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.
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)]Division of Drinking WaterChecklist for New Public Drinking Water Wells
(Per Utah Administrative Code, Rule R309-515-6)
System Name:System Number:Well Name & Description:1.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
☐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: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 (every 1200 feet, end-of-line, each branch, etc.)☐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☐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