DDW-2024-008779

July 9, 2024
Jean Brill
Green Hills Country Estates
P.O. Box 453
Huntsville, Utah 84317
Subject:Plan Approval, Green Hills Treatment Plant (TP001), Green Hills Treatment Plant Booster Station (PF002); Green Hills Country Estates, System #29053, File #13562, SRF#3F1930
Dear Jean Brill:The Division of Drinking Water (the Division) received the finalized and stamped plans and specifications for the Green Hills Treatment Plant (TP001) and Green Hills
Treatment Plant Booster Station (PF002) from your consultant, Scott Bolton with ArdurraonJune 28, 2024.
Our understanding of the project is the construction of a new drinking water treatment plant. This will include treatment to target Iron, Manganese, and Turbidity. It will include pre-oxidation
with potassium permanganate, coagulation with ferric chloride, clarification and filtration with WesTech’s Tri-Mite package filtration plant, and post-chlorination with liquid sodium
hypochlorite. Detailed project description and the Division’s decision to issue Plan Approval for the Green Hills Treatment Plant are summarized in the Project Overview Addendum.
The plan review of the proposed chlorinator in the Green Hills Treatment Plant (TP001) has been completed according to the following:
The proposed chlorinator at the Green Hills Treatment Plant (TP001)is adding liquid sodium hypochlorite of 12.5%.
This chlorinator will add chlorine to the water from Well #2 (WS002, aka Maple Well).
This chlorinator is intended to provide secondary disinfection post filtration for the distribution system. 
Where the chlorinated water will go to either the Storage Reservoir #3 (ST003, aka Maple Tank) or the Reservoir #2 (ST002, aka Lower Kelly Tank).
The proposed liquid sodium hypochlorite for disinfection meets the ANSI/NSF 60 standard.
The Point of Entry (POE) sampling location will be the continuous online analyzer after chlorine addition post Tri-Mite Filtration.
We have completed our review of the plans and specifications of the proposed Green Hills Treatment Plant (TP001), stamped, and signed by Ryan Taylor, P. E., and dated June 17, 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 construction of Green Hills
Treatment Plant (TP001) are hereby approved.
This plan approval pertains to construction only. An Operating Permit must be obtained from the Director before the Green Hills Treatment Plantmay be put into service. A checklist outlining
the items required for issuing an Operating Permit for this treatment plant is enclosed for your information.
Secondary Disinfection Requirements
The Division has determined that Green Hills country Estates must provide continuous disinfection to maintain detectable chlorine residuals throughout the distribution system. The proposed
chlorinatoris intended to provide a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed chlorinator is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after the Operating Permit issuance,
the water system will be required to demonstrate ongoing compliance with the secondary disinfection requirements that are outlined in Addendum 2 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 Well #2 (WS002, aka Maple Well) 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.Monitoring
and Reporting RequirementsPrior to the issuance of an operating permit, please submit four (4) distinct sets of water samples. Each set must include samples for iron, manganese, and
turbidity collected from both the raw water tap and the treated water tap. Ensure that each set is collected on separate days.Upon issuance of an operating permit the monitoring requirements
currently assigned to Well #2 (WS002, aka Maple Well) will be transferred to the Green Hills Treatment Plant (TP001). The POE sampling tap located downstream of filtration and chlorination
will be the location in which all source samples representing Well #2 (WS002, aka Maple Well) are collected.Pursuant to R309-215-6(2)(a) monthly iron and manganese monitoring requirements
will remain in place for a minimum of six (6) months. If after six (6) months of monthly monitoring the results demonstrate successful removal, this requirement may be reduced to one
iron and manganese sample per quarter. Please contact David Kruse at [e-mail] or 385-566-7789 with any questions regarding this system's source monitoring and reporting requirements.
State Revolving Fund RequirementsThe 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. Federal regulations require that a concerted
effort must be made to encourage participation of small and disadvantaged business enterprises (DBE) by providing requisite information, including plans and specifications on the project.
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 opportunity to DBE's must be reviewed and approved by this office before the contract can be awarded.Approvals
or permits by local authority or 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.
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/mdbEnclosuresOperating Permit ChecklistAddendum 1 – Project OverviewAddendum 2 - Future Monitoring and Reporting Requirementscc:Scott Braeden, Weber-Morgan Health Department,
[e-mail] Bolton, Ardurra, [e-mail] Taylor, Arudurra, [e-mail] Brill, Green Hills Country Estates, [e-mail]
Dani Zebelean, P.E., Division of Drinking Water, [e-mail]
Cameron Draney, Division of Drinking Water, [e-mail]
Hunter Payne, Division of Drinking Water, [e-mail]

Nathan Lunstad, P.E., Division of Drinking Water, [e-mail]
Heather Pattee, Division of Drinking Water, [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]
Colt Smith, Division of Drinking Water, [e-mail] DZebelean 29053 13562 PA TP001]
Utah Division of Drinking Water ― Checklist for Issuing Operating PermitsWater System Name:Green Hills Country EstatesSystem Number: 29053Project Description: GreenHills Treatment
PlantFile Number: 13562
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).☐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 — 4 pairs of raw and finished water samples analyzed for Iron, Manganese, and Turbidity. The pairs of data shall be taken on separate days.☐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 sourceAddendum 1 Project Overview
Green Hills Country Estates Water System (UTAH#29053)
Green Hills Treatment Plant (TP001)
Our understanding of the project is that the proposed Green Hills Treatment Plant will treatWell #2 (WS002, aka Maple Well). Bench Testing was performed by WesTech for the coagulant,
polymer, and sodium hypochlorite chemicals and summarized in a report dated September 2, 2023. A design kickoff meeting was held on November 1, 2023, to go over the proposed treatment
train with Division, Ardurra, and Green Hills Country Estates staff. The 60% design plans were received on December 11, 2023, with review comments on January 4, 2024. The reverse osmosis
system was removed for the 90% Design Plans that were received on March 22, 2024, with review comments sent on April 17, 2024. The first final plans were received on May 22, 2024, with
minor review comments sent back on June 11, 2024. Finalized and stamped plans were received from Scott Bolton onJune 28, 2024.
The Green Hills Treatment Plant (TP001) is designed to target iron, manganese, and turbidity from the Water Source (WS00X). Iron and manganese are both secondary contaminants in the
Safe Drinking Water Act. Iron has no associated adverse health effects but can cause aesthetic concerns in the water such as smell and discoloration. Manganese, while being a secondary
contaminant, is associated with memory, attention, and motor skill problems in children and adults with chronic exposure. Turbidity is a primary contaminant in the Safe Drinking Water
Act and is often associated with disease-causing microorganisms that could be present at higher turbidity levels.The proposed Green Hills Treatment Plant consists of pre-oxidation, coagulation,
clarification, media filtration, and post-chlorination processes. The proposed Green Hills Treatment Plant (TP001) has a plant design capacity of 200 gallons per minute (gpm). The design
includes 2train(s) of clarification, media filtration processes, and each train of 100 gpm. The proposed treatment plant consists of the following processes in sequence:Bypass - A bypass
line takes water after potassium permanganate addition and directs it straight to the Finished Water Booster Pumps through a 3-inch diameter butterfly valve. This will be utilized if
the two Tri-Mite systems are undergoing maintenance. This is allowed as neither Iron, Manganese, or Turbidity are acute contaminants of concern. Pre-oxidation – by potassium permanganate
followed by a 1,000-gallon reaction tank. Bench testing concluded that a dose of 0.15-0.25 mg/L of potassium permanganate was needed to achieve the treatment goal of less than 0.3 mg/L
manganese.Coagulant - with ferric chloride. Bench testing concluded that a dose of 10 mg/L was effective at removing turbidity and precipitated solids. Polymer - From the bench testing
report it concluded Magnafloc LT27 was the best fit for this water quality.
Coagulation and Media Filtration – WesTech Brand, Model Tri-Mite prepackaged system; 2 trains; 100 gpm per train.
Backwash Water comes from after the Green Hills Treatment Plant Booster Station (PF002). Post-chlorination – 12.5% strength sodium hypochlorite injection after the Tri-Mite Filters.Green
Hills Treatment Plant Booster Station (PF002) - Three pumps are included in the design, with space for a fourth pump to be added at a later date. A Tigerflow Booster System Pumping Station
will be used for the two pumps to convey to the Storage Reservoir #3 (WS003, akaMaple Tank). A Grudfos pump will be used for the pump to convey water to the Reservoir #2 (ST002, aka
Lower Kelly Tank).
Addendum 2
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.
Secondary 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 (EP001). [R309-215-10(1)]Our records show that your water system
serves 237 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 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)]
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 237 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. 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) site(s) 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.