DDW-2025-004041

April 29, 2025
Matt Vellinga
USFS - Fishlake National Forest
115 East 900 North
Richfield, Utah 84701
Subject:Plan Approval, Maple Grove Campground Spring #2 Chlorinator, Dosatron D14WL3000, (TP002); Maple Grove Campground, System #14017, File #20798
Dear Matt Vellinga:The Division of Drinking Water (the Division) received the plans and specifications for the proposed Maple Grove Campground Spring #2 Chlorinator from you on April
9, 2025. Written review comments were provided to you on April 10, 2025. The Division received your written response to comments on April 16, 2025. This project has now met the conditions
for receiving a plan approval.
The letter includes the following sections and addenda:

1.Project Summary for Spring #2 Chlorinator (TP002)    
2. Plan Approval for Spring #2 Chlorinator(TP002)
3.Operating Permit Checklist 
4.FutureMonitoring and Reporting Requirements (Addendum 1)Project Summary
Our understanding of the project is that the original design of the Maple Grove Campground water system included an H.E. Anderson type chlorinator that would be located between the source
water and the water storage tank. The enclosure was installed for the H.E. Anderson chlorinator, but the chlorinator was never put into use. This project will utilize the existing enclosure
but will install a new water-powered Dosatron pump to pump liquid sodium hypochlorite into the Spring #2 (WS002) supply pipeline prior to the water entering the 2,000-gallon Tank (ST001).
The new Dosatron pump will require minor plumbing adjustments but will fit into the existing 60-inch diameter corrugated metal pipe (CMP) enclosure. The Dosatron will pull liquid sodium
hypochlorite from a 5-gallon barrel located inside the enclosure. Chlorinated water will then be delivered to the 2,000-gallon tank and then on to the distribution system for the campground.
The Spring #2 Chlorinator will be identified as TP002 in the Division’s database.
The plan review of the proposed Spring #2 Chlorinator (TP002) has been completed according to the following:
The proposed Spring #2 Chlorinator is a liquid sodium hypochlorite injection system using Tchlor with a concentration of 12%. The hypochlorite concentration will be diluted to a lower
concentration when the system is put into operation.  
This chlorinator will add chlorine to the water from Spring #2 (WS002).
This chlorinator is intended to provide secondary disinfection in the distribution system.  
The chlorinated water will go to the 2,000-gallon tank (ST002), and then to the distribution system.
The proposed sodium hypochlorite 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 1.67 gallons per minute (gpm) from Spring #2.
The chlorine dose will be adjusted by the automatic flow-paced control in the Dosatron unit. A non-modulating float valve on the storage tank will control the water into the storage
tank by opening fully at a set low point in the tank and closing fully at the set high point in the tank.
The Point of Entry (POE) sampling location will be at the yard hydrant located on the west side of Group Site C in the campground. This is the first yard hydrant located on the system
below the 2,000-gallon storage tank.
Plan Approval for Spring #2 Chlorinator (TP002)
We have completed our review of the plans and specifications, stamped, and signed by Robert T. Anderson, P.E., dated March 31, 2025, 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 Spring #2 Chlorinator are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before Spring #2 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 Maple Grove Campground Water Systemis not required to disinfect Spring #2 (WS002) based on bacteriological source sample results currently available. The water system is electing
to install the Spring #2 Chlorinator (TP002) to provide a detectable disinfectant residual in the distribution system for secondary disinfection.
The plan review of the proposed Spring #2 Chlorinator (TP002) is based on providing secondary disinfection. When this chlorinator is installed and placed in operation after the Operating
Permit issuance, the Maple Grove Campground 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 Maple Grove Campground Spring #2 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 John Chartier, P..E., DEQ Central District Engineer, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
JLC/mrn/mdbEnclosures –Operating Permit ChecklistAddendum 1- Future Monitoring and Reporting Requirementscc:Eric Larsen, Central Utah Public Health, [e-mail] Robert
T. Anderson, P.E., USDA Forest Service, [e-mail] Matt Vellinga, Fishlake National Forest, [e-mail] Douglas Robison, Fishlake National Forest, [e-mail]
John Chartier, P.E., DEQ Central District Engineer, [e-mail]
Luke Treutel, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail] jchartier 14017 20798 PA
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 specific location will be identified during the operating permit 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
100 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)]
Source Bacteriological Monitoring 
The operating permit will include requirements for monthly Escherichia Coli (E. Coli) sampling at Spring #2 (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 Spring #2 (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.
The source sampling requirement shall begin no later than July 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.
In the result of an E. coli positive sample, please contact Sitara Federico at [e-mail] or [phone] within 24 hours of notification.