DDW-2025-000088

January 6, 2025
Darren Hess
Weber Basin Water Conservancy District
2837 UT-193
Layton, Utah 84041
Subject:Plan Approval, Weber South WTP Phase II 5 MG Tank (ST012) and Temporary Exceptionto R309-545-10(1)(d)Drains; Weber Basin Water Conservancy District- Central, System #29023, File
#18620
Dear Darren Hess:The Division of Drinking Water (the Division) received the plans and specifications for Weber South WTP Phase II 5-million-gallon replacement tank project from your
consultant, Josh Curtis, P.E. with Bowen Collins and Associates, on December 24, 2024. This project has met the conditions for receiving a plan approval.
Our understanding of the project is the construction of a 5-million gallon (MG) post-tensioned concrete tank (identified as Weber South WTP Phase II 5 MG Tank, ST012, in the Division’s
database). The tank will replace the existing 4.3 MG WTP tank (ST006) and serve as a parallel tank to the Weber South 5 MG Tank (ST010) tank currently under construction (File #13144).

We have completed our review of the plans and specifications, stamped, and signed byJoshua Rex Curtis, P.E., dated December 23, 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 Weber South WTP Phase II 5 MG Tank (ST012) are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before the storage tank 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, 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.
Temporary Exception to R309-545-10(1)(d) Drains
On November 21, 2022, the Division issued a temporary exception to Rule R309-545-10(1)(d) Drains, for the Weber South WTP 5 MG Tank (ST010) under File #13144. The Weber South WTP 5 MG
Tank (ST010) and Weber South WTP Phase II 5 MG Tank (ST012) will share a common drain and overflow line. The temporary exception issued for ST010 under File#13144 will also apply to
the Weber South Phase II 5MG Tank (ST012) and share the same conditions and expiration date outlined in the letter dated November 21, 2022.
If you have any questions regarding this letter, please contact Julie Cobleigh, P.E., of this office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
JJC/mrn/mdbEnclosures –Operating Permit Checklistcc:Scott Braeden, Weber-Morgan Health Department, [e-mail] Curtis, P.E., Bowen Collins and Associates, [e-mail]
Hess, Weber Basin Water Conservancy District, [e-mail] Cobleigh, P.E., Division of Drinking Water, [e-mail] Payne, Division of Drinking Water, [e-mail]
Jennifer Yee, Division of Drinking Water, [e-mail]
Nagendra Dev, P.E., Division of Drinking Water, [e-mail] jcobleigh 29023 Weber Basin 5 MG tank
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