DDW-2024-007029

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144830 • Salt Lake City, UT 84114-4830
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper.
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF DRINKING WATER
Nathan Lunstad, P.E.
Director

April 1, 2024

Ivan Merrell
Vernal City Water System
78 North 500 East
Vernal, UT 84078

Subject: Monitoring Requirement Changes – Disinfection Byproducts and Lead & Copper,
Vernal City Water System (UTAH24012)

Ivan Merrell:

Due to recent updates to your system’s population count, your water monitoring requirements for
Disinfection Byproducts (DBPs) and Lead and Copper have changed as described below:

Disinfection Byproducts Monitoring
Vernal City Water System has been moved to quarterly monitoring for DBPs based on updates to the
population count served by the water system. This means the system must collect four (4) DBP samples
every quarter. Each DBP sample must be a paired sample analyzed for both haloacetic acids and
trihalomethanes. The next samples must be collected during the April 1 - June 30, 2024, monitoring period.
Because of this change the water system will need to submit an updated DBP sample site plan to the
Division within 30 days of this letter. Please use the attached DBP sample site plan template. Please
contact Luke Treutel at [e-mail] or at [phone] if you have any questions regarding DBP
monitoring and reporting.

Lead & Copper Monitoring
The lead and copper monitoring requirements for Vernal City Water System have changed based on an
updated population of 11,000. This means the system must collect 30 first-draw lead and copper samples
every 3 years. The next round of samples must be collected during the June 1, 2025 - September 30, 2025
Ivan Merrell
Page 2 of 22
April 1, 2024

monitoring period. Please contact Dylan Martinez at [e-mail] or at [phone] if you
have questions about lead and copper monitoring and reporting requirements.

Your monitoring requirements, including these updated requirements, are available to you online at
waterlink.utah.gov. Additionally, a copy of your system’s monitoring schedule has been enclosed.

Thank you for your efforts to maintain safe drinking water.

Sincerely,
Mark Berger
Monitoring and Standards Section Manager

Enclosure – Water System Monitoring Schedule
DBP Sample Site Plan Template

cc: [e-mail]
Cindy Austreng, Tri-County Health Department, [e-mail]
Nathan Hall, DEQ District Engineer, [e-mail]
Luke Treutel, Utah Division of Drinking Water, [e-mail]
Dylan Martinez, Utah Division of Drinking Water, [e-mail]
Contacts
Type: Administrative Contact
Name: IVAN MERRELL
Office: 435-789-2255
Emergency:
Email:
[e-mail]
Site Information
Legal Contact: VERNAL
Address: 78 North 500 East ,
VERNAL, UT 84078
Phone: [phone]
County: UINTAH COUNTY
System Type: Community
Certification Required: D3
Total Population: 11000
Site Updates
Last Inventory Update: 07/27/2023
Last Surveyor Update: 05/04/2021
Surveyor: NATHAN HALL
Operating Period: 1/1 - 12/31
Last IPS Update: 03/21/2024 14:10:00
Political Districts
Representative: 55
Senate: 26
Water Usage Information per ERC
Standard as of: 07/26/2022
Peak Day Demand per ERC
(gal/day/ERC): 1691.0
Average Annual Demand per ERC
(gal/ERC): 305576.0
Equalization Storage per ERC
(gal/ERC): 834.0
Total Ips Points: 0
Public Water System Water Monitoring ReportDEQ | Drinking Water
Vernal City Water System PWS ID: UTAH24012 Rating: Approved 05/07/1987 Status: Active

BACTERIOLOGICAL MONITORING
Sample Count Type Frequency Schedule Begin Schedule End Analyte Name
10 Routine Monthly 05/01/2013 COLIFORM (TCR)
DISINFECTION BYPRODUCT STAGE 2 MONITORING
Sample Count Type Frequency Sample Label
2 Routine Yearly UTAH24012 DS001 Sample ID below
Sample ID Site Last Sampled Next Sample Due
MD001 1500 N 1500 W 09/18/2023 07/01/2024-09/30/2024
MD003 78 N 500 E (IDSE CC SITE)09/18/2023 07/01/2024-09/30/2024
OTHER DISTRIBUTION MONITORING
Analyte Name ID Sample Count Type Frequency Last Sampled Next Sample Due
LEAD AND COPPER DS001 20 Routine 3 Years 09/2022 06/01/2025-09/30/2025
ASBESTOS DS001 1 Routine 9 Years 04/2018 01/01/2020 - 12/31/2028
CHLORINE RESIDUAL MONITORING
ID Facility Name Sample Count Type Frequency Last Sampled Next Sample Due
DS001 UTAH24012 DISTRIBUTION SYSTEM 12 Routine Monthly --
MONITORING REQUIREMENTS BY FACILITY
ID Name Facility Details
GROUPED SOURCE SAMPLING STATIONS
Sample Group ID Sample Group Facility Details
OPEN COMPLIANCE SCHEDULES
Type Required Activities Severity Created Due
Lead Copper Rule Revisions COMPLETE INITIAL LSL INVENTORY 12/16/2021 10/16/2024
Lead Copper Rule Revisions SUBMIT LEAD SERVICE LINE INVENTORY 12/16/2021 10/16/2024
CCR SCHEDULES Submit Consumer Confidence Report 01/01/2024 07/01/2024
CCR SCHEDULES Submit CCR Certification Letter 01/01/2024 10/01/2024
Revised 7/30/2021
Utah Div ision of Drinking Water
Stage 2 Disinfectant Byproduct (DBP) Sampling Plan
In accordance with State of Utah Rule R309-210-10(3): Any Community (COM) or Non-Transient Non-Community
(NTNC) drinking water system that regularly applies a chemical disinfectant must develop and implement a DBP
monitoring plan. The system must maintain current version of the plan on file and submit a copy of 1) the monitoring
plan, 2) a schematic of the distribution system, and 3) the justification for site selection (IDSE water, modeling analysis,
etc.) to the Division of Drinking Water.
BASIC WATER SYSTEM INFO
Water System Name: Water System #:
Residual Disinfectant Type: ☐ Chlorine ☐ Chlorine Dioxide ☐ Ozone
# of Service Connections:
Population (# of customers):
Sampling Schedule ( # of sampling locations):
Per Quarter Per Year
SITE SELECTION INFO
Associated Rules:
R309-210-9(2)(b)(i)(Q): A dual sample set (i.e., a TTHM and an HAA5 sample) must be
taken at each monitoring location during each monitoring period.
Associated Info:
Disinfection By Product Sampling
schedules are based on
population and source water
type. DBPs may be required
quarterly, annually, or every
three years. For a complete list of
possible schedules please see
associated DBP handout.
•One dual sample set must be taken at the
highest TTHM (trihalomethanes) sampling
site, at a location that represents
maximum residence time; typically in the
furthest reaches of your distribution
system, or where water is oldest.
This location is denoted as MR001.
•One dual sample set must be taken
at the highest HAA5 (haloacetic
acids) sampling site, at a location
that represents the average
residence time; typically located mid
distribution system
This location is denoted as MD001.
R309-210-10(3)(ii):
•Water system must identify which locations will be used for compliance monitoring
by alternating selection of locations representing high TTHM and high HAA5 levels
until the required number of compliance monitoring locations have been identified.
Water system sampling
schedules with sampling
locations and details are available
at any time at
WaterLink.utah.gov
SAMPLES
Sample
Code
Specific sampling location
ADDRESS
Site Characteristics / Site Selection Justification
(check those that apply)
MR001
MR002
MR003
MR004
☐Highest TTHM/HAA5 in prior data
☐Endpoint of distribution system and/or maximum water age
☐Other:
MD001
MD002
MD003
MD004
☐Highest TTHM/HAA5 in prior data
☐Midpoint of a large distribution system
☐Endpoint of distribution system and/or maximum water age
☐Other:
Annual samples must be collected within a specific time frame in accordance with State of Utah Rules
R309-210-10(2)(a)(ii)(N): All systems must monitor during months of highest DBP concentrations.
R309-210-9(2)(b)(i)(R): The peak historical month is the month with the highest TTHM or HAA5 levels or the
warmest water temperature.
Source Water Types:
☐Ground water
☐Ground water purchasing from wholesale Water System #: UTAH
☐Ground water Under Direct Influence of surface water
☐Surface water
☐Surface water purchasing from wholesale Water System #: UTAH
CERTIFICATION
I certify that I am the person authorized to fill out this application and the information I have provided is
accurate and complete to the best of my knowledge at the time it was completed.
X X
Printed Name Signature
Date: Title: ☐ Administrative Contact
☐ Operator
SUBMITTAL
Mail the completed form to:
Or Email:
Division of Drinking Water
Attn: DBP Rule Manager
195 N 1950 W
PO BOX 144830
Salt lake City, UT 84114
[e-mail]
This application and related environmental information are available online at DrinkingWater.utah.gov
For more information, or to answer questions, please contact the DBP Rule Manager, Luke Treutel at [phone]
[e-mail]
Revised 7/30/2021