Clean Water Act discharge permit · NPDES TXR05GC26
MM - SCHALKER RECYCLE YARD, Houston, TX: NPDES TXR05GC26 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MM - SCHALKER RECYCLE YARD, held by Martin Marietta Materials Southwest, LLC, holds NPDES permit TXR05GC26. EPA’s file records it issued May 19, 2023 and expiring August 13, 2026. 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.
What the register holds for MM - SCHALKER RECYCLE YARD: its NPDES ID, its permit type and status, its dates, its address in Houston, Texas, and 16 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR05GC26.
Identity
| Facility as filed | MM - SCHALKER RECYCLE YARD |
|---|---|
| Permittee as filed | Martin Marietta Materials Southwest, LLC |
| NPDES ID | TXR05GC26 |
| 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 |
| Program | Industrial stormwater |
| Issued | May 19, 2023 |
| Expiration date | August 13, 2026 |
| Address | Houston, TX 77026 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Hunting Bayou (HUC 120401040701) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 16Under a numeric limit
- 0With 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 | 10 | 0 | 0 | ||
| Copper, total [as Cu] | 10 | 0 | 0 | ||
| Lead, total [as Pb] | 10 | 0 | 0 | ||
| Zinc, total [as Zn] | 10 | 0 | 0 | ||
| Solids, total suspended | 5 | 0 | 0 | ||
| Arsenic, total [as As] | 5 | 0 | 0 | ||
| Barium, total [as Ba] | 5 | 0 | 0 | ||
| Cadmium, total [as Cd] | 5 | 0 | 0 | ||
| Chromium, total [as Cr] | 5 | 0 | 0 | ||
| Iron, total [as Fe] | 5 | 0 | 0 | ||
| Manganese, total [as Mn] | 5 | 0 | 0 | ||
| Nickel, total [as Ni] | 5 | 0 | 0 | ||
| Silver, total [as Ag] | 5 | 0 | 0 | ||
| Selenium, total [as Se] | 5 | 0 | 0 | ||
| Mercury, total [as Hg] | 5 | 0 | 0 | ||
| Chemical Oxygen Demand [COD] | 5 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TXR05GC26.
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 TXR05GC26.
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, TXR05GC26.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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How we handle your data → Privacy
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 TXR05GC26 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.