Clean Water Act discharge permit · NPDES TXG110773

KNIFE RIVER ROCKDALE PLANT, Rockdale, TX: NPDES TXG110773 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
20Pollutants under a numeric limit
1Pollutants with an effluent exceedance

KNIFE RIVER ROCKDALE PLANT, held by KNIFE RIVER CORPORATION SOUTH, holds NPDES permit TXG110773, which discharges to Brush Creek. EPA’s file records it issued February 3, 2017 and expiring November 7, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	KNIFE RIVER ROCKDALE PLANT
Permittee as filed	KNIFE RIVER CORPORATION SOUTH
NPDES ID	TXG110773
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	February 3, 2017
Expiration date	November 7, 2021
Address	Rockdale, TX 76567
Receiving water	BRUSH CREEK
Subwatershed	Rocky Creek-Brushy Creek (HUC 120702050410)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

20Pollutants on file
20Under a numeric limit
18With a violation of any kind
1With 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
Solids, total suspended	2	100	1	December 31, 2023	138% over the limit
pH	4	198	0
Oil & Grease	2	99	0
Flow, in conduit or thru treatment plant	2	99	0
Arsenic, total [as As]	2	42	0
Barium, total [as Ba]	2	42	0
Cadmium, total [as Cd]	2	42	0
Chromium, total [as Cr]	2	42	0
Copper, total [as Cu]	2	42	0
Lead, total [as Pb]	2	42	0
Manganese, total [as Mn]	2	42	0
Nickel, total [as Ni]	2	42	0
Silver, total [as Ag]	2	42	0
Zinc, total [as Zn]	2	42	0
Selenium, total [as Se]	2	42	0
Mercury, total [as Hg]	2	42	0
LC50 Pass/Fail Static 24Hr Acute D. Pulex	2	24	0
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas	2	24	0
Whole effluent toxicity - retest #1	2	0	0
Whole effluent toxicity - retest #2	2	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 TXG110773.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TXG110773.

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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 TXG110773 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.