DWQ-2025-003182

FACT SHEET
CORINNE CITY CORPORATION
UTAH POLLUTANT DISCHARGE ELIMINATION SYSTEM (UPDES)
UPDES PERMIT MODIFICATION: DISCHARGE
UPDES PERMIT NUMBER: UT0020931
MINORMUNICIPAL
FACILITY CONTACTSPerson Name:JL NicholsPosition:Public Works DirectorPhone Number:435-720-7961Permittee:Corinne City CorporationFacility:Corinne Wastewater Lagoon SystemMailing Address:2420
North 4000 WestPO Box 118Corinne, UT 84307
Actual Address:½ mile south of Corinne City, in Box Elder County
Facility Phone Number:[phone]
DESCRIPTION OF PERMIT MODIFICATION
This permit modification is in response to a request from Corinne City Corporation (Corinne), received by the Division of Water Quality (DWQ) on January 8, 2025, requesting a Compliance
Schedule forbiochemical oxygen demand (BOD5), total suspended solids (TSS), and pH effluent limitations for Outfall 001D. Corinne is requesting a Compliance Schedule while upgrades are
made to the collection system, which will reduce inflow and infiltration (I&I) to the Corinne Wastewater Lagoon System. Increased I&I has resulted in numerous effluent violations from
Outfall 001D. DWQ has granted this request based on Corinne’s improvement efforts.
The Compliance Schedule will be effective from the Permit modification issuance date until January 1, 2028. The Compliance Schedule will last for the duration of this UPDES permit cycle.
For the duration of the Compliance Schedule,DWQ will implement interim limitations for the above parameters. The interim permit limitations are lower than Corinne requested and are based
on a review of Corinne’s effluent data for the last five years. The below interim permit limitations and Compliance Schedule are also reflected in Part 1.C.2. and Part 1.C.3. ofUPDES
Permit No. UT0020931. These interim effluent limitations shall be applied to Outfall 001D. Any violation of the Compliance Schedule is a violation of the UPDES Permit.
Compliance Schedule and Outfall 001D Effluent Limits
Compliance Schedule Milestones
Date
Milestone
January 1, 2026
Corinne will submit complete design plans to DWQ. The plans must include updates on construction funding. If plans are submitted and construction begins before January 1, 2026, Corinne
shall provide DWQ with construction progress by January 1, 2026.
July 1, 2026
Corinne provides DWQ with construction progress.
January 1, 2027
Corinne provides DWQ with construction progress.
January 1, 2028
Constructions and upgrades are completed. Corinne will meet the final effluent limits.
BOD5 Compliance Schedule
Date
Limit (Weekly Avg.)
Limit (Monthly Avg.)
Approval – December 31, 2027
65 mg/L
45 mg/L
January 1, 2028
35 mg/L
25 mg/L
TSS Compliance Schedule
Date
Limit (Weekly Avg.)
Limit (Monthly Avg.)
Approval – December 31, 2027
65 mg/L
45 mg/L
January 1, 2028
35 mg/L
25 mg/L
pH Compliance Schedule
Date
Limit (Min.)
Limit (Max.)
Approval – December 31, 2027
6.5
9.5
January 1, 2028

6.5
9.0
The changes listed above are the only proposed changes with this permit modification subject to Public Comment during the Public Notice Comment Period. All other permit effluent limitations
remain unopened and unchanged as appropriate.
PERMIT DURATIONIt is recommended that this permit modification be effective through the current permit expiration date, May 31, 2026.Drafted byJennifer Berjikian, Environmental ScientistPUBLIC
NOTICEBegan: February 28, 2025Ended:March 31, 2025Comments will be received at: 195 North 1950 West PO Box 144870 Salt Lake City, UT 84114-4870During the public comment period provided
under R317-8-6.5, any interested person may submit written comments on the draft permit and may request a public hearing, if no hearing has already been scheduled. A request for a public
hearing shall be in writing and shall state the nature of the issues proposed to be raised in the hearing. All comments will be considered in making the final decision and shall be answered
as provided in R317-8-6.12.ADDENDUM TO FSSOBDuring finalization of the Permit certain dates, spelling edits and minor language corrections were completed. Due to the nature of these
changes they were not considered Major and the permit is not required to be re Public Noticed.Responsiveness SummaryNo comments were received during the Public Notice Comment Period.
DWQ-2025-001763