Clean Water Act discharge permit · NPDES TX0123935
FREESTONE POWER GENERATION PLANT, Fairfield, TX: NPDES TX0123935 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
FREESTONE POWER GENERATION PLANT, held by FREESTONE POWER GENERATION LLC AND CALPINE OPERATING SERVICES COMPANY INC, holds NPDES permit TX0123935, which discharges to Trinity River Above Lake Livingston. EPA’s file records it issued May 2, 2017 and expiring February 1, 2022. 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 | FREESTONE POWER GENERATION PLANT |
|---|---|
| Permittee as filed | FREESTONE POWER GENERATION LLC AND CALPINE OPERATING SERVICES COMPANY INC |
| NPDES ID | TX0123935 |
| 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 | May 2, 2017 |
| Expiration date | February 1, 2022 |
| Address | Fairfield, TX 75840 |
| Receiving water | TRINITY RIVER ABOVE LAKE LIVINGSTON |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Saline Branch-Trinity River (HUC 120302010301) |
| SIC | 4911 – Electric Services |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 18Pollutants on file
- 18Under a numeric limit
- 16With a violation of any kind
- 4With 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 | 30 | 25 | September 30, 2022 | 130% over the limit |
| Chlorine, free available | 2 | 6 | 2 | January 31, 2006 | 300% over the limit |
| Oil & Grease | 2 | 5 | 1 | December 31, 2018 | 33% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 5 | 1 | August 31, 2015 | 5% over the limit |
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 2 | 20 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 2 | 19 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 16 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 2 | 16 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 2 | 16 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 2 | 16 | 0 | ||
| E. coli | 1 | 13 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 8 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 8 | 0 | ||
| pH | 2 | 4 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 2 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 3, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| March 1, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
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.
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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 TX0123935 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.