Clean Water Act discharge permit · NPDES TNG110120
SMYRNA READY MIX, PLANT 26, Columbia, TN: NPDES TNG110120 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SMYRNA READY MIX, PLANT 26, held by Smyrna Ready Mix Concrete, LLC, holds NPDES permit TNG110120, which discharges to Duck-Lower. EPA’s file records it issued November 16, 2017 and expiring October 31, 2022. 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.
What the register holds for SMYRNA READY MIX, PLANT 26: its NPDES ID, its permit type and status, its dates, its address in Columbia, Tennessee, its receiving water, and 4 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TNG110120.
Identity
| Facility as filed | SMYRNA READY MIX, PLANT 26 |
|---|---|
| Permittee as filed | Smyrna Ready Mix Concrete, LLC |
| NPDES ID | TNG110120 |
| 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 | November 16, 2017 |
| Expiration date | October 31, 2022 |
| Issuing agency | TDEC - DWR |
| Address | Columbia, TN 38402 |
| Receiving water | Duck-Lower |
| Subwatershed | Duck River-Bear Creek (HUC 060400030506) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 4Pollutants on file
- 4Under 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 | 8 | 0 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Iron, total [as Fe] | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TNG110120.
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 TNG110120.
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 TNG110120 there.
Nearby on the register
- Discharge permits in Columbia
- Every permit record in Columbia, A to Z
- Discharge permits in Tennessee
- Every permit record in Tennessee, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.