DDW-2024-010428

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
August 6, 2024

Brian Hunnings Red Cliffs Partners LLC Mile Post 14 HWY 128 Moab, UT 84532
Subject: Notice of Increased Monitoring Requirements for Red Cliff Partners LLC, UTAH10037
Brian Hunnings: According to the Division of Drinking Water’s (the Division) records, Red Cliffs Partners LLC was recently reclassified as a non-transient non-community water system. As a non-transient non-community water system, the water system is required to comply with additional water
quality standards listed in R309-200. This letter serves as notification of the increased source monitoring requirements associated with this change. Pursuant to R309-205, non-transient non community water systems shall collect samples for five different chemical classes (inorganics and metals, nitrate, sulfate sodium TDS, pesticides and
volatile organics) at a location which represents source water after it has undergone treatment, prior to entry into the distribution system. Additionally, R309-215-6(2) requires that additional samples be collected for the parameters for which treatment has been installed. It is the Divisions understanding that due to the elevated levels of TDS and Sulfate present in the Red Cliffs Well 2 (WS002) that one water softener (identified as ‘Well House Softener’ (TP001)) and five point
use reverse osmosis (RO) devices have been installed.
Well House Softener To prevent Red Cliffs Partners LLC from having to collect a sample for each chemical class at each point of use RO device, the monitoring requirements for inorganics and metals, nitrate,
pesticides and volatile organics have been applied to the Well House Softener (TP001). Please
collect the samples listed in the table below immediately downstream of the Well House Softener (TP001) and label samples collected from this location as TP001 for both the facility and sample point ID on all laboratory paperwork.

Brian Hunnings Page 2 of 2
August 6, 2024
Volatile Organics and Pesticides A sample for volatile organics and pesticides is required by September 30, 2024. If the results
show no detections in either chemical group, the sample frequencies may be reduced to one
volatile organics sample per year and one pesticide sample every three years. Point of Use R.O. Devices To ensure that the efficacy of each point of use RO device is evaluated annually, one sample for
sulfate sodium and TDS is now required each year from the Winery R.O (TP002), Lodge R.O.
(TP003), Queens R.O. (TP004), Kings R.O. (TP005) and the Cabins R.O. (TP006). These monitoring requirements described above are presented below and can be found anytime at waterlink.utah.gov.

Facility with new requirements Analyte(s) Required # of samples Sampling Frequency Next Due Date Rule Reference
TP001 Well House Softener Pesticides 1 Quarterly 07/01/2024-09/30/2024 R309-205-6(1)(f)
Volatile Organic Contaminants 1 Quarterly 07/01/2024-09/30/2024 R309-205-6(2)
Nitrate 1 Yearly 01/01/2025-12/31/2025 R309-205-5(4)(a)
Inorganics & Metals 1 Every three years 01/01/2023-12/31/2025 R309-205-5(3)(a)
TP002 Winery R.O. Sulfate, Sodium, TDS 1 Yearly 01/01/2024-12/31/2024 R309-205-5(3)(a)
TP003 Lodge R.O. Sulfate, Sodium, TDS 1 Yearly 01/01/2025-12/31/2025 R309-205-5(3)(a)
TP004 Queens R.O. Sulfate, Sodium, TDS 1 Yearly 01/01/2024-12/31/2024 R309-205-5(3)(a)
TP005 Kings R.O. Sulfate, Sodium, TDS 1 Yearly 01/01/2024-12/31/2024 R309-205-5(3)(a)
TP006 Cabins R.O. Sulfate, Sodium, TDS 1 Yearly 01/01/2024-12/31/2024 R309-205-5(3)(a)

Please contact David Kruse at (385)-566-7789 or [e-mail] for questions regarding the source monitoring and reporting requirements for your water system.
Brian Hunnings Page 2 of 2
August 6, 2024
Sincerely,
Mark Berger Monitoring and Standards Implementation Manager
cc: Brian Hunnings, Red Cliffs Partners LLC, [e-mail] Orion Rogers, Southeast Utah Health Department, [e-mail] Curtis Page, DEQ Southeast District Engineer, [e-mail] Mark Berger, Division of Drinking Water, [e-mail] David Kruse, Division of Drinking Water, [e-mail]