Clean Water Act discharge permit · NPDES TN0057312
CHATTANOOGA GAS COMPANY LIQUEFIED NATURAL GAS PLANT, Chattanooga, TN: NPDES TN0057312 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CHATTANOOGA GAS COMPANY LIQUEFIED NATURAL GAS PLANT, held by Chattanooga Gas Company, holds NPDES permit TN0057312, which discharges to Tennessee River (Chattanooga Area - Nickajack). EPA’s file records it issued June 10, 2019 and expiring June 30, 2024. 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.
Identity
| Facility as filed | CHATTANOOGA GAS COMPANY LIQUEFIED NATURAL GAS PLANT |
|---|---|
| Permittee as filed | Chattanooga Gas Company |
| NPDES ID | TN0057312 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | June 10, 2019 |
| Expiration date | June 30, 2024 |
| Issuing agency | TDEC - DWR |
| Address | Chattanooga, TN 37406 |
| Receiving water | Tennessee River (Chattanooga Area - Nickajack) |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower South Chickamauga Creek (HUC 060200010905) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 5Under a numeric limit
- 10With a violation of any kind
- 1With 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 | 6 | 124 | 5 | July 31, 2015 | |
| Flow, in conduit or thru treatment plant | 6 | 120 | 0 | ||
| LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia | 0 | 29 | 0 | ||
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 0 | 29 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 29 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 0 | 29 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 24 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 0 | 24 | 0 | ||
| Solids, total suspended | 2 | 15 | 0 | ||
| Oil & Grease | 2 | 15 | 0 | ||
| Chlorine, total residual | 1 | 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 TN0057312.
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 TN0057312 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.