DDW-2024-012907

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, Ph.D., P.E. Director
September 4, 2024

Levi Gabriel Jones Moab City 217 East Center St. Moab, UT 84532-2439

Subject: Notice of Confirmation Sampling and Increased Monitoring Requirements for Moab City, UTAH10003
Levi Gabriel Jones: According to the Division of Drinking Water’s (the Division) records, samples were collected from the Spring #3 (identified as WS003) and the Snakel Spring (WS012) on August 20, 2024.
The results of the analysis show cadmium was detected at 0.0055mg/L in Spring #3 and that turbidity was found at levels of 11.6 NTU in the Snakel Spring. The maximum contaminant level (MCL) for cadmium and turbidity is 0.005mg/L and 5 NTU respectively. These results trigger confirmation sampling and increased routine monitoring requirements.
Confirmation Turbidity Sampling at Snakel Spring Pursuant to Utah Administrative Code (UAC) R309-205-8(2), please collect 3 additional turbidity samples from the Snakel Spring by September 20, 2024. The intent of this requirement is to capture turbidity readings over a 30-day period. For the most accurate results, please space
out turbidity sampling so that one sample is collected per week. Please label samples as collected
from facility and sampling point ID WS012 on all laboratory paperwork and send the results directly to [e-mail] when they are available. Elevated turbidity levels can be due to iron and manganese present in source groundwater.
Although not required, the Division recommends that Moab City collect iron and manganese
samples concurrently with the 3 confirmation turbidity samples. In the event that the manganese samples show concentrations above certain levels, Moab City can apply for available funding to install manganese treatment. Please contact Sarah Romero at [e-mail] or (801)-
896-8255 with questions regarding funding opportunities.

Levi Gabriel Jones Page 2 of 2

Increased Routine Monitoring at Spring #3 Pursuant to UAC R309-205-6(3)(g-h), Moab City is now required to collect quarterly cadmium
samples at Spring #3. These samples will be required in each quarter which Spring #3 provides
water to the distribution system. Compliance with the cadmium MCL is based on a running annual average (RAA). This means that a violation will not be issued until there are four quarters of cadmium results. If after one year of quarterly sampling the RAA for cadmium at Spring #3 exceeds the MCL of 0.005mg/L, the water system will be issued a water quality violation and
public notice will be required. The next cadmium sample will be due sometime between
10/01/2024-12/31/2024. Due to the low levels of metals detected in Spring #3 in past sampling events, Spring #3 was previously on a reduced monitoring schedule in which only one inorganics and metals sample
was required per nine-year compliance cycle. Following this exceedance, the reduced monitoring
waiver has been revoked, and inorganics and metals and sulfate sodium and TDS samples are now due every three years. The next sample for the complete suite of inorganics and metals and sulfate sodium and TDS will be due sometime between 01/01/2026-12/31/2028.
The updated monitoring requirements for these sources are given below. An updated monitoring
schedule can be viewed any time at waterlink.utah.gov under the Water Monitoring section.
Facility with new requirements Analyte(s) Required # of samples Sampling Frequency Next Due Date Rule Reference
WS012 Snakel Spring Turbidity 3 * 09/01/2024-09/20/2024 R309-205-8(2)
Inorganics & Metals 1 Every nine years 01/01/2029-12/31/2037 R309-205-5(3)(a)
Nitrate 1 Yearly 01/01/2025-12/31/2025 R309-205-5(4)(a)
Sulfate, Sodium, TDS 1 Every nine years 01/01/2029-12/31/2037 R309-205-5(3)(a)
Pesticides 2 Every three years 01/01/2026-12/31/2028 R309-205-6(1)(f)
Radionuclides 1 Every nine years 01/01/2029-12/31/2037 R309-205-7(1)(c)
Volatile Organic Contaminants 1 Every three years 01/01/2026-12/31/2028 R309-205-6(2)
WS003 Spring #3 Cadmium 1 Quarterly 10/01/2024-12/31/2024 R309-205-6(3)(g)
Inorganics & Metals 1 Every three years 01/01/2026-12/31/2028 R309-205-5(3)(a)
Levi Gabriel Jones Page 2 of 2

Nitrate 1 Yearly 01/01/2025-12/31/2025 R309-205-5(4)(a)
Sulfate, Sodium, TDS 1 Every three years 01/01/2026-12/31/2028 R309-205-5(3)(a)
Pesticides 2 Every three years 01/01/2026-12/31/2028 R309-205-6(1)(f)
Radionuclides 1 Every nine years 01/01/2029-12/31/2037 R309-205-7(1)(c)
Volatile Organic Contaminants 1 Every three years 01/01/2026-12/31/2028 R309-205-6(2)
*- Routine frequency to be determined following confirmation sample submission Please contact David Kruse at (385)-566-7789 or [e-mail] for questions regarding the
source monitoring and reporting requirements for your water system.
Sincerely, Mark Berger Monitoring and Standards Implementation Manager cc: Levi Gabriel Jones, Moab City, [e-mail] Orion Rogers, Southeast Utah Health Department, [e-mail] Curtis Page P.E., Department of Environmental Quality, [e-mail] Mark Berger, Division of Drinking Water, [e-mail] David Kruse, Division of Drinking Water, [e-mail] Sarah Romero. Division of Drinking Water, [e-mail] John Steffan, Division of Drinking Water, [e-mail] [e-mail]