DDW-2025-002362

March 12, 2025
Justin Blackett
Nephi City
21 East 100 North
Nephi, Utah 84648
Subject:Operating Permit, Worwood Well REPL-1 (WS012);
Nephi City, System #12003, File #13432
Dear Justin Blackett:The Division of Drinking Water (the Division) received your request for the Operating Permit for the Worwood Well REPL-1 from your consultant, Parker Vercimak with
Jones & DeMille Engineering on February 3, 2025. The Division issued Plan Approval for drilling this well on January 3, 2024, and Plan Approval for equipping this well on January 6,
2025. DEQ’s Central District Engineer conducted an onsite final inspection of this facility on January 6, 2025.
Our understanding of the project is that the original Worwood Well (WS011) was producing excessive sand, so the City has abandoned the original well and drilled this replacement well
within 150 feet of the original well. The replacement well has been drilled to a depth of 600 feet with a 10-inch diameter steel production casing and intermittent stainless-steel wire-rapped
screen. A grout surface seal was placed from ground surface down 110 feet and #8 SRI Supreme gravel pack was placed in the annular space from 110 feet to the bottom of the well. The
well was test pumped for 24 hours at 250 gallons per minute (gpm) with 190 feet of drawdown. This replacement well has been equipped with a 40 hp submersible pump capable of producing
200 gpm at 460 feet of total dynamic head. This replacement well utilizes the original well discharge piping and well house. This replacement well is identified as Worwood Well REPL-1
(WS012) in the Division’s database.
We have received the following information for the Worwood Well REPL-1 (WS012):
Design engineer’s statement of conformance with approval conditions
As-built or record drawings.
Recorded land use agreements.
Satisfactory bacteriological results as evidence of proper disinfection and flushing.
New Source Chemistry Sample Results
We have determined that all conditions of operating permit issuance have been met. On this basis, an Operating Permit for the Worwood Well REPL-1 is hereby issued as constituted by this
letter. You may now place Worwood Well REPL-1 (WS012) in service in your water system.
Please maintain a copy of this letter with your permanent records for future reference.
The equipped well pump capacity of Worwood Well REPL-1 is 200gallons per minute (gpm). The safe yield of Worwood Well REPL-1 is rated at 167gpm, which is calculated based on two-thirds
of the constant-rate aquifer drawdown test results at 250gpm. The safe yield of 167gpm is the basis for determining the maximum number of connections that Worwood Well REPL-1 can serve.
Source Monitoring Requirements
Issuance of this Operating Permit changes your water system’s monitoring and reporting
requirements. The monitoring requirements for this well are given below. The quarterly monitoring requirements for volatile organic compounds (VOC) and radionuclides can be reduced following
two quarters of VOC sampling with no detections and four quarters of radionuclide samples. An updated monitoring schedule can be viewed any time at waterlink.utah.gov under the Water
Monitoring section. Please contact David Kruse at (385)-566-7789 or [e-mail] for questions regarding the source monitoring and reporting requirements for your water system.Facility
with new requirementsAnalyte(s) Required# of samplesSampling FrequencyNext Due DateRule ReferenceWS012 Worwood Well Repl-1 Radionuclides1Quarterly04/01/2025-06/30/2025R309-205-7(1)(b)Volatile
Organic Contaminants1Quarterly04/01/2025-06/30/2025R309-205-6(2)Nitrate1Yearly01/01/2025-12/31/2025R309-205-5(4)(a)Inorganics & Metals1Every three years01/01/2026-12/31/2028R309-205-5(3)(a)Sulfate,
Sodium, TDS1Every three years01/01/2026-12/31/2028R309-205-5(3)(a)Pesticides1Every three years01/01/2026-12/31/2028R309-205-6(1)(f)PFAS**Collect (1) sample every 5-7 months during
a 12 month period for a total of 2 samples by April 26, 2027.40 CFR 141 (2024)PFAS Information and Resources:The EPA rule for PFAS requires that either method 533 or 537.1 version 2
are used for testing. Please ensure that the chosen laboratory processes PFAS samples using one of these methods. Additionally, the Division has resources to assist water systems in
completing the PFAS initial monitoring requirements. For more information on the resources the division can provide related to PFAS initial monitoring please visit ddwpfas.utah.gov.For
PFAS related questions, please contact John Steffan at [e-mail] or [phone].
If you have any questions regarding this Operating Permit, please contact DEQ Central District Engineer, John Chartier, P.E., at [phone], or Michael Newberry, P.E., Permitting
and Engineering Manager, at [phone].
Sincerely,
Russell Seeley, P.E.
Assistant Director
JLC/MNN/mrn/mdbcc: Eric Larsen, Central Utah Public Health, [e-mail] Parker Vercimak, P.E., Jones & DeMille Engineering, [e-mail] Justin Blackett,
Nephi City, [e-mail]
John Chartier, P.E., DEQ Central District Engineer, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]
Jennifer Yee, Division of Drinking Water, [e-mail]
Melissa Noble, P.G., Division of Drinking Water, [e-mail]
John Steffan, Division of Drinking Water, [e-mail] jchartier 12003 13432 OP WS012