DWQ-2024-006989

October ??, 2024Division of Water QualityUtah Department of Environmental QualityPublic Notice of Intent to Renew Ground Water Discharge Permit
No. UGW570002
Purpose of Public Notice
The Utah Department of Environmental Quality (DEQ) is soliciting comments on the requestto renew agroundwater discharge permit as described below. The groundwater discharge permit is
issued by the Director of the Division of Water Quality under authority of the Utah Water Quality Act, Section 19-5-106(g) Utah Code Ann. 1953, as amended and Utah Administrative Code
R317-6. Under Section 19-1-301.5, effective May 8, 2012, a person who wishes to challenge a Permit Order may only raise an issue or argument during an adjudicatory proceeding that was
raised during the public comment period and was supported with sufficient information or documentation to enable the Director to fully consider the substance and significance of the
issue. Utah Code Ann. 19-1-301.5 can be viewed at the following internet URL: le.utah.gov/xcode/Title19/Chapter1/19-1-S301.5.html
Permit Information
Permittee:American Pacific Corporation (AMPAC)
Mailing Address:10622 West 6400 North
Cedar City, Utah 84721
Facility Location:12 miles northwest of Cedar City, Utah
AMPAC is requesting a renewal and modification of the ground water discharge permit to cover the operation of a lined wastewater lagoon at their sodium azide manufacturing plant. This
lagoon contains contact process wastewater from the sodium azide manufacturing process. This wastewater contains sodium ions, nitrate and nitrite ions, impurities from the commercial
grade sodium supply, and iron hydroxides from the corrosion of piping. Any sodium azide in the wastewater will be reduced to below detection levels prior to discharge to the impoundment.
Conditions of the permit allow no release of the process fluids from the facility through the satisfactory use of best available technology (BAT). The use of leak detection monitoring
shall demonstrate compliance with this condition.
The permit will also include the operation of a lined wastewater pond and the construction of a second wastewater pond at the WECCO facility. The current evaporation pond (Pond #1)
was constructed with a single High-Density Polyethylene (HDPE) liner. The proposed construction of the second wastewater pond (Pond #2) will consist of a double HDPE liners with a leak
detection system. Upon completion of Pond #2 and an approval to use has been issued, Pond #2 will then be put into use. Pond #1 will be then be taken out of service and allowed to
dry. It will then be carefully inspected and repaired as necessary and may be reconstructed with a double HDPE liner with leak detection. A construction permit will be required for
that work.
These ponds are used for the washdown of the WECCO facilities and may have trace amounts of ammonium perchlorate. The facilities are initially swept and cleaned prior to the washdown.
Public Comments
Public comments are invited any time through close of business on October ??, 2024. Written comments may be directed to the Division of Water Quality (DWQ), PO Box 144870, Salt Lake
City, UT 84114-4870. All comments received prior to close of business onOctober??, 2024will be considered in the formulation of final conditions to be imposed on the permit.A public
hearing may be held if written requests are received within the first 15 days of this public comment period that demonstrate significant public interest and substantive issues exist
to warrant holding a hearing.
Additional Information
Additional information may be obtained upon request by contacting Woodrow Campbell at [phone]or [e-mail] or by writing to the aforementioned address. Related documents
are available for review during normal business hours at DWQ, 195 North 1950 West in Salt Lake City or on the DWQ web page at deq.utah.gov/public-notices-archive/water-quality-public-notices
In compliance with the Americans with Disabilities Act, individuals with special needs (including auxiliary communicative aids and services) should contact LeAnn Johnson, Office of Human
Resources at [phone], TDD [phone].