Clean Water Act discharge permit · NPDES TXG110874
OK CONCRETE PLANT 15 SHAMROCK, Shamrock, TX: NPDES TXG110874 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
OK CONCRETE PLANT 15 SHAMROCK, held by OK CONCRETE COMPANY, holds NPDES permit TXG110874, which discharges to North Fork Red River. EPA’s file records it issued January 25, 2017 and expiring November 7, 2021.
OK CONCRETE PLANT 15 SHAMROCK, Shamrock, Texas: Coverage under a general permit TXG110874, held by OK CONCRETE COMPANY; Administratively continued (past its expiration date and still in force until reissued); issued January 25, 2017, term to November 7, 2021; discharges to NORTH FORK RED RIVER.
- pH: 2 limits, 48 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 1 limit, 24 violations of any kind, 0 effluent exceedances.
- Oil & Grease: 1 limit, 24 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 1 limit, 24 violations of any kind, 0 effluent exceedances.
- Arsenic, total [as As]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Barium, total [as Ba]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Chromium, total [as Cr]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Manganese, total [as Mn]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Silver, total [as Ag]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Selenium, total [as Se]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- Mercury, total [as Hg]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Other permits held by OK CONCRETE COMPANY
- OK CONCRETE PLANT 5 SEYMOUR, Seymour: TXG110820, issued January 25, 2017
- OK CONCRETE PLANTS 1 & 2, Wichita Falls: TXG110821, issued January 25, 2017
- OK CONCRETE PLANT OLNEY, Olney: TXG110871, issued January 25, 2017
- OK CONCRETE PLANT 4 VERNON, Vernon: TXG110872, issued January 25, 2017
- OK CONCRETE PLANT 13 JACKSBORO, Jacksboro: TXG110873, issued January 25, 2017
- OK CONCRETE PLANT 7 WINDTHORST, Windthorst: TXG110875, issued January 25, 2017
- OK CONCRETE PLANT 14 MEMPHIS, Memphis: TXG110876, issued January 25, 2017
OK CONCRETE PLANT 15 SHAMROCK among its neighbors
EPA’s permit file holds 1 discharge permits in the Cole Creek-North Fork Red River subwatershed (HUC 111203020104), TXG110874 among them. Its county holds 10, 0 of them major permits; TXG110874 is a minor permit.
Identity
| Facility as filed | OK CONCRETE PLANT 15 SHAMROCK |
|---|---|
| Permittee as filed | OK CONCRETE COMPANY |
| NPDES ID | TXG110874 |
| 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 | January 25, 2017 |
| Expiration date | November 7, 2021 |
| Address | Shamrock, TX 79079 |
| Receiving water | NORTH FORK RED RIVER |
| Subwatershed | Cole Creek-North Fork Red River (HUC 111203020104) |
Effluent limits and exceedances
- 20Pollutants on file
- 20Under a numeric limit
- 18With a violation of any kind
- 0With 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 | 2 | 48 | 0 | ||
| Solids, total suspended | 1 | 24 | 0 | ||
| Oil & Grease | 1 | 24 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 24 | 0 | ||
| Arsenic, total [as As] | 1 | 12 | 0 | ||
| Barium, total [as Ba] | 1 | 12 | 0 | ||
| Cadmium, total [as Cd] | 1 | 12 | 0 | ||
| Chromium, total [as Cr] | 1 | 12 | 0 | ||
| Copper, total [as Cu] | 1 | 12 | 0 | ||
| Lead, total [as Pb] | 1 | 12 | 0 | ||
| Manganese, total [as Mn] | 1 | 12 | 0 | ||
| Nickel, total [as Ni] | 1 | 12 | 0 | ||
| Silver, total [as Ag] | 1 | 12 | 0 | ||
| Zinc, total [as Zn] | 1 | 12 | 0 | ||
| Selenium, total [as Se] | 1 | 12 | 0 | ||
| Mercury, total [as Hg] | 1 | 12 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 6 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TXG110874.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TXG110874.
Inspections
EPA’s inspection file holds no inspection for NPDES TXG110874.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TXG110874.
Watch this permit
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.