Clean Water Act discharge permit · NPDES NE0000418

OPPD FORT CALHOUN STATION, Fort Calhoun, NE: NPDES NE0000418 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
12Pollutants under a numeric limit
3Pollutants with an effluent exceedance

OPPD FORT CALHOUN STATION holds NPDES permit NE0000418, which discharges to Missouri River. EPA’s file records it issued December 1, 2015 and expiring December 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	OPPD FORT CALHOUN STATION
Permittee as filed	OPPD FORT CALHOUN STATION
NPDES ID	NE0000418
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Not a publicly owned treatment works
Issued	December 1, 2015
Expiration date	December 31, 2020
Address	Fort Calhoun, NE 68023
Receiving water	MISSOURI RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Moores Creek-Missouri River (HUC 102300060502)
NAICS	221113 – Nuclear Electric Power Generation
SIC	4911 – Electric Services
Other EPA IDs (FRS)	RCRA handler NED006970453; ICIS-AIR source NE0000003117700034

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

12Pollutants on file
12Under a numeric limit
4With a violation of any kind
3With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	12	7	7	December 31, 2007
Solids, total suspended	14	3	3	September 30, 2001	227% over the limit
Oil and grease, hexane extr method	10	1	1	March 31, 2005	40% over the limit
Flow, in conduit or thru treatment plant	14	2	0
Temperature, water deg. fahrenheit	4	0	0
BOD, 5-day, 20 deg. C	4	0	0
Nitrogen, total [as N]	2	0	0
Nitrogen, ammonia total [as N]	2	0	0
Phosphorus, total [as P]	2	0	0
E. coli, MTEC-MF	2	0	0
Chlorine, total residual	2	0	0
Duration of discharge	1	0	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES NE0000418.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID NE0000418 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act NPDES permit NE0000418 for OPPD FORT CALHOUN STATION in Fort Calhoun, NE, a major discharger whose permit is administratively continued past its December 31, 2020 expiration. The page lists 12 as the discharger class, 3 pollutants under a numeric limit, and 3 pollutants with an effluent exceedance.