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Exxon Mobil Refining & Supply Company

Marine Cargo Handling, Baton Rouge, Louisiana. NPDES permit LA0065056, in force until Apr 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (7 values), outfall 02B form A quarterly (12 values), outfall 101 form S twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 18 reports late

Limits in force (25)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year001
Oxygen demand, chem. [high level] [COD]daily maximum≤ 250 mg/Lall year02B
Oxygen demand, chem. [high level] [COD]daily maximum≤ 250 mg/Lall year02B
pHinstantaneous minimum≥ 6 SUall year02B
pHinstantaneous minimum≥ 6 SUall year02B
pHinstantaneous maximum≤ 9 SUall year02B
pHinstantaneous maximum≤ 9 SUall year02B
Oil & Greasedaily maximum≤ 15 mg/Lall year02B
Oil & Greasedaily maximum≤ 15 mg/Lall year02B
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year02B
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year02B
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year02B
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year02B
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101

How strict are these limits?

Cited limits by parameter: Louisiana's rules and the federal ones.

Same industry: the 28 Water Transportation permits in Louisiana.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0065056 · MCP: https://passage-data.com/mcp