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Clean Water Act discharge permit · NPDES LA0004260

CHALMETTE REFINING, LLC, Chalmette, LA: NPDES LA0004260 discharge permit, effluent exceedances, inspections, penalties

CHALMETTE REFINING, LLC, held by Chalmette Refining, LLC, holds NPDES permit LA0004260, which discharges to Mississippi River/Guichard Canal. EPA’s file records it issued September 18, 2018 and expiring September 30, 2023. 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 filedCHALMETTE REFINING, LLC
Permittee as filedChalmette Refining, LLC
NPDES IDLA0004260
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 18, 2018
Expiration dateSeptember 30, 2023
AddressChalmette, LA 70044
Receiving waterMISSISSIPPI RIVER/GUICHARD CANAL
Receiving water impaired303(D) Listed
SubwatershedMississippi River-Bonnet Carre Spillway (HUC 080901000101)
SIC2911 – Petroleum Refining
Other EPA IDs (FRS)RCRA handler LAD008179707; ICIS-AIR source LA0000002208700005

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended64133November 30, 2025290% over the limit
Carbon, tot organic [TOC]105210June 30, 2026340% over the limit
Sulfide, total [as S]253December 31, 202191% over the limit
Oil and grease0102August 31, 2008706% over the limit
Oxygen demand, chem. [high level] [COD]282June 30, 202161% over the limit
pH22471July 31, 2003
pH range excursions, > 60 minutes5121November 30, 201199,999% over the limit
BOD, 5-day, 20 deg. C251August 31, 200822% over the limit
Flow, in conduit or thru treatment plant26610
Chlorine, total residual6190
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex4180
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas4180
Oil & Grease8110
pH range excursions, monthly total accum5110
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex4100
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas4100
Nitrogen, ammonia total [as N]280
Phenolics, total recoverable280
Chromium, hexavalent [as Cr]260
Coef Of Var Static Renewal 48Hr Acute D. pulex260
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas260
Chromium, total [as Cr]240
Lead, total [as Pb]210
Benzene210
BTEX210
Whole effluent toxicity - retest #1800
Whole effluent toxicity - retest #2800
Whole Effluent Toxicity - Retest #3800
Nitrogen, total [as N]400
Phosphorus, total [as P]400
Hydrogen peroxide200
Ozone - residual200
Chlorine dioxide200
E. coli200
Peracetic Acid200
Vibrio cholerae200
Organisms greater than or equal to 50 micrometers200
Organisms less than 50 micrometers and greater than or equal to 10 micrometers200
Enterococci200

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

DateWhat EPA recordedAgency
December 31, 2024Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
June 30, 2024Reporting Violations - Improper/ Incorrect ReportingST6
March 31, 2024Reporting Violations - Improper/ Incorrect ReportingST6
March 31, 2022Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)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 LA0004260 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers Clean Water Act NPDES permit LA0004260, held by CHALMETTE REFINING, LLC in Chalmette, LA, which discharges to Mississippi River/Guichard Canal and is listed as administratively continued with a Major Discharger class. The page lists 8 pollutants under a numeric limit and 8 pollutants with an effluent exceedance.