DDW-2024-006038

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
Tim Davis
Director

November 21, 2023

Robert Snyder
Rockville Pipeline Co
PO Box 630212
Rockville, UT 84763

Subject: Notice of Increased Monitoring for Rockville Pipeline Co, UTAH27014

Robert Snyder:

According to the Division of Drinking Water’s (the Division) records, the Group Source Sampling
Station SS007 (listed as SS007 in the Divisions database) detected Radium-228 at levels of 5.6
pCi/L on September 27, 2023. The Maximum Contaminant Level (MCL) for this contaminant is 5
pCi/L. As a result of this, this source is now subject to increased monitoring in accordance with
R309-205-7(c)(v). Compliance with the Radium-228 MCL will be determined by the Running
Annual Average (RAA) of the samples collected at the Group Source Sampling Station SS007
(SS007). If at any point the RAA is greater than 5 pCi/L, a MCL violation will be issued, and
public notice will be required.

Group Source Sampling Station SS007 (SS007) is now required to be sampled each calendar
quarter that the facility is running for Radium 226, Radium-228 and Gross Alpha Particle
Activity. Presented below are the complete monitoring requirements for this facility.

Facility with new
requirements
Analyte(s)
Required
# Of
samples
Sampling
Frequency Next Due Date Rule
Reference
SS007
Group Source Sampling
Station SS007
Combined
Uranium 1 Every Three
Years
01/01/2023-
12/31/2025 R309-205-7

Gross Alpha
Particle
Activity
1 Quarterly 01/01/2024-
03/31/2024 R309-205-7
Radium-226 1 Quarterly 01/01/2024-
03/31/2024 R309-205-7
Radium-228 1 Quarterly 01/01/2024-
03/31/2024 R309-205-7
Robert Snyder
Page 2 of 2
November 21, 2023

Nitrate 1 Yearly 01/01/2024-
12/31/2024 R309-205-5
Sulfate,
Sodium, TDS 1 Every Three
Years
01/01/2023-
12/31/2025 R309-205-5
Volatile
Organics 1 Every Six
Years
01/01/2020-
12/31/2025 R309-205-6(2)
Inorganics and
Metals 1 Every Three
Years
01/01/2023-
12/31/2025 R309-205-5

You will find a current copy of your complete monitoring schedule enclosed and online at
waterlink.utah.gov by selecting your system and then selecting Water Monitoring under Water
System Reports. Thank you for your efforts in maintaining a safe drinking water system. If you
have questions concerning your sampling requirements, please contact David Kruse at 385-566-
7789 ([e-mail]).

Sincerely,

Mark Berger
Monitoring and Standards Implementation Manager

Enclosure – Monitoring Schedule

cc: Robert Snyder, Rockville Pipeline Co, [e-mail], [e-mail]
Jeremy Roberts, Southwest Utah Health Department, [e-mail]
Paul Wright, Department of Environmental Quality, [e-mail]
Mark Berger, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]