DDW-2024-012425

October 22, 2024
Zachary Renstrom, Manager
Washington County Water Conservancy District
Washington County WCD – Sand Hollow
533 East Waterworks Drive
St. George, Utah 84770
Subject:Plan Approval, Sand Hollow 2 MG Tank B (ST006) and 2 Million Gallon Reservoir (ST004) repairs; Washington County WCD – Sand Hollow, System #27073, File #15891
Dear Zachary Renstrom:
The Division of Drinking Water (the Division) received the plans and specifications for the proposed Sand Hollow 2 MG Tank B Project from Todd Olsen, Bowen Collins & Associates on August
2, 2024. Written review comments were provided to you and your consultant on August 28, 2024. The Division received a written response to the plan review comments on September 23, 2024.
Our understanding of the project is the construction of a new 2 million gallon concrete tank with associated facilities including an inlet, outlet, drain, underdrain system, access hatch,
air vent, and overflow. This tank will be located adjacent to the existing 2 Million Gallon Reservoir (ST004). After the new tank is complete, the 2 Million Gallon Reservoir will undergo
some interior repairs to the concrete. These repairs will use ANSI/NSF 61 approved materials. There will also be other modifications including replacing the interior access ladder
and replacing overflow pipe supports. The roof will have soil cover added along with a new access hatch and air vent that will be elevated above the soil cover. The new 2 million gallon
tank will be called Sand Hollow 2 MG Tank B and it will be identified as ST006 in the Division’s database.
We have completed our review of the plans and specifications, stamped, and signed byTodd A. Olsen, P.E., and dated July 31, 2024, and found 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 the Sand Hollow 2 MG Tank B (ST006) and 2 Million Gallon Reservoir (ST004)
are hereby approved.
This approval pertains to construction only. An Operating Permit must be obtained from the Director before the Sand Hollow 2 MG Tank B (ST006) and 2 Million Gallon Reservoir (ST004)
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.
If you have any questions regarding this approval, please contact J. Paul Wright, P.E., DEQ Southwest District office, at [phone], or me at [phone].
Sincerely,
Michael Newberry, P.E.
Permitting and Engineering Support Manager
JPW/mrn/mdbEnclosures –Operating Permit Checklistcc:Jeremy Roberts, Southwest Utah Public Health Dept., [e-mail] Renstrom, Washington County WCD, [e-mail]
Jones, Washington County WCD, [e-mail]. Paul Wright, P.E., DEQ Southwest District Engineer, [e-mail] Olsen, P.E., Bowen Collins & Associates, [e-mail]
27073 15891 ST006 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