Clean Water Act discharge permit · NPDES TX0124362
SANDHILL ENERGY CENTER, Del Valle, TX: NPDES TX0124362 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SANDHILL ENERGY CENTER, held by AUSTIN, CITY OF, holds NPDES permit TX0124362, which discharges to Colorado Rv Below Lady Bird Lake/Town Lk. EPA’s file records it issued December 4, 2019 and expiring December 4, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SANDHILL ENERGY CENTER |
|---|---|
| Permittee as filed | AUSTIN, CITY OF |
| NPDES ID | TX0124362 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 4, 2019 |
| Expiration date | December 4, 2024 |
| Address | Del Valle, TX 78617 |
| Receiving water | COLORADO RV BELOW LADY BIRD LAKE/TOWN LK |
| Subwatershed | Carson Creek-Colorado River (HUC 120902050409) |
Cited to the EPA ICIS-NPDES permit file (ECHO 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 |
|---|---|---|---|---|---|
| Oil & Grease | 4 | 9 | 5 | January 31, 2019 | 433% over the limit |
| Chlorine, free available | 2 | 6 | 4 | February 29, 2016 | 640% over the limit |
| Solids, total suspended | 4 | 6 | 2 | July 31, 2012 | 75% over the limit |
| pH | 2 | 1 | 1 | February 29, 2016 | |
| Flow, in conduit or thru treatment plant | 10 | 18 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 4 | 7 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 4 | 4 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 4 | 4 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 4 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 7 | 3 | 0 | ||
| Whole effluent toxicity - retest #2 | 7 | 3 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| Copper, total [as Cu] | 2 | 2 | 0 | ||
| Iron, total [as Fe] | 2 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 1 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 1 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 4 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 4 | 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 TX0124362.
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 TX0124362 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.