DDW-2024-006042

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

DIEDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF DRINKING WATER
Tim Davis
Director

November 21, 2023

Dallas Anderson
Desert Oasis SSD
3300 W 4000 S
Delta, UT 84624

Subject: Notice of Violation for Arsenic, Public Notice Requirement, Desert Oasis SSD:
UTAH14051

Dallas Anderson:

This letter is an official notification that according to the Division of Drinking Water (the
Division) records, the Arsenic Plant (identified as TP003 in the divisions database) is in violation
of the Arsenic standard as given in R309-200-5. Compliance with the Arsenic maximum
contaminant level (MCL) of 0.010mg/L is based off the running annual average (RAA). The
current RAA of Arsenic at the Arsenic Plant (TP002) is 0.011mg/L.

As a result of this violation, Deseret – Oasis SSD has been given an additional 50 IPS points.
Deseret – Oasis SSD now has 190 IPS points. Your system is now above the Improvement
Priority System threshold of 150 points and can now be rated Not Approved. To avoid this please
reach out to Colt Smith at [e-mail] or 385-515-1529 and request a Compliance
Agreement Enforcement Order within 14 to 30 days.

With the Arsenic Plant (TP003) containing combined Arsenic levels above the MCL, you must:

1. Notify your water users per the attached public notice protocol within 30 days of receiving
this letter and repeat the notice every three months for as long as the violation exists. A
copy of the public notice must be submitted to the Division at [e-mail] by
December 21, 2023.
2. Enact one of the following mitigation measures:
a. Identify operational strategies that can minimize Arsenic exposure.
b. Identify possible alternative sources for drinking water.
c. Immediately implement an operational plan to minimize Arsenic exposure of the
drinking water.
Dallas Anderson
Page 2 of 2
November 21, 2023

3. Present MCL exceedance in annual CCR while including the Standard Health Effects
Language listed in R309-220-15 for Arsenic, and explaining the corrective actions being
taken.

Thank you for your efforts in maintaining a safe drinking water system. If you have questions or
need further assistance, please contact David Kruse, at [phone] or [e-mail].

Sincerely,
Mark Berger
Monitoring and Standards Implementation Manager

Enclosures: Public Notice

cc: Dallas Anderson, Deseret Oasis SSD, [e-mail]
Eric Larsen, Central Utah Health Department, [e-mail]
John Chartier, Department of Environmental Quality, [e-mail]
Mark Berger, Division of Drinking Water, [e-mail]
Colt Smith, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]