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Enterprise Gas Processing LLC

Natural Gas Liquids, Geismar, Louisiana. NPDES permit LA0001431 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (6 values), outfall 002 form Q quarterly (6 values), outfall 101 form A quarterly (6 values), outfall 101 form Q quarterly (9 values), outfall 102 form Q quarterly (11 values), outfall 202 form Q quarterly (8 values), and 1 more form
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 34 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Chlorine, free available, daily maximum.7 mg/L≤ .5 mg/L40%

Limits in force (54)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall 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 (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Temperature, water deg. fahrenheitinstantaneous maximum≤ 95 deg Fall year101
Oxygen demand, chem. [high level] [COD]daily maximum≤ 125 mg/Lall year101
Chloride [as Cl]monthly averagereport only (mg/L)all year101
Chloride [as Cl]daily maximumreport only (mg/L)all year101
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year101
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year101
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Chlorine, free availabledaily maximum≤ .5 mg/Lall year101
Chlorine, free availabledaily maximum≤ .5 mg/Lall year101
Solids, total dissolvedmonthly averagereport only (mg/L)all year101
Solids, total dissolveddaily maximumreport only (mg/L)all year101
pHinstantaneous minimum≥ 6 SUall year102
pHinstantaneous maximum≤ 9 SUall year102
Solids, total suspendeddaily maximum≤ 90 mg/Lall year102
Solids, total suspendeddaily maximum≤ 90 mg/Lall year102
Oil & Greasedaily maximum≤ 15 mg/Lall year102
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year102
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year102
Benzenedaily maximum≤ 50 ug/Lall year102
BTEXdaily maximum≤ 250 ug/Lall year102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year102
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year201
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year201
Solids, total suspendedmonthly average≤ 30 mg/Lall year201
Solids, total suspendeddaily maximum≤ 45 mg/Lall year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year201
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year201
Solids, total suspendeddaily maximum≤ 45 mg/Lall year202
Chloride [as Cl]monthly averagereport only (mg/L)all year202
Chloride [as Cl]daily maximumreport only (mg/L)all year202
Iron, total [as Fe]daily maximumreport only (ug/L)all year202
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year202
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year202
Solids, total dissolvedmonthly averagereport only (mg/L)all year202
Solids, total dissolveddaily maximumreport only (mg/L)all year202

How strict are these limits?

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

Same industry: the 56 Oil and Gas Extraction 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/LA0001431 · MCP: https://passage-data.com/mcp