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Placid Refining Co-Port Allen

Petroleum Refining, major discharger, Port Allen, Louisiana. NPDES permit LA0039390 expired Apr 30, 2025; its limits still apply. Last 12 months: no values over a limit, 2 of 67 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (20 values), outfall 001 form Q quarterly (4 values), outfall 002 form Q quarterly (8 values), outfall 003 form Q quarterly (8 values), outfall 004 form Q quarterly (8 values), outfall 005 form Q quarterly (8 values), and 9 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 67 reports late

Limits in force (129)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 585 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 1054 lb/dall year001
Oxygen demand, chem. [high level] [COD]monthly average≤ 4087 lb/dall year001
Oxygen demand, chem. [high level] [COD]daily maximum≤ 7889 lb/dall year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 469 lb/dall year001
Solids, total suspendeddaily maximum≤ 735 lb/dall year001
Oil & Greasemonthly average≤ 171 lb/dall year001
Oil & Greasedaily maximum≤ 320 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 305 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 671 lb/dall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Sulfide, total [as S]monthly average≤ 2.9 lb/dall year001
Sulfide, total [as S]daily maximum≤ 6.6 lb/dall year001
Chromium, hexavalent [as Cr]monthly average≤ .5 lb/dall year001
Chromium, hexavalent [as Cr]daily maximum≤ 1.1 lb/dall year001
Chromium, total [as Cr]monthly average≤ 5.7 lb/dall year001
Chromium, total [as Cr]daily maximum≤ 15.8 lb/dall year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Phenolics, total recoverablemonthly average≤ 3.8 lb/dall year001
Phenolics, total recoverabledaily maximum≤ 7.8 lb/dall 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
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
pH range excursions, > 60 minutesmonthly total≤ 0 occur/moall year001
pH range excursions, monthly total accummonthly total≤ 446 minall year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute D. pulexmaximumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmaximumreport only (%)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
Total phenolsmonthly averagereport only (mg/L)all year002
Total phenolsdaily maximumreport only (mg/L)all 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
pHinstantaneous minimum≥ 6 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
Oil & Greasedaily maximum≤ 15 mg/gall year003
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year003
Total phenolsmonthly averagereport only (mg/L)all year003
Total phenolsdaily maximumreport only (mg/L)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
pHinstantaneous minimum≥ 6 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year004
Total phenolsmonthly averagereport only (mg/L)all year004
Total phenolsdaily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
pHinstantaneous minimum≥ 6 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year005
Total phenolsmonthly averagereport only (mg/L)all year005
Total phenolsdaily maximumreport only (mg/L)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHinstantaneous minimum≥ 6 SUall year006
pHinstantaneous maximum≤ 9 SUall year006
Oil & Greasedaily maximum≤ 15 mg/Lall year006
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year006
Total phenolsmonthly averagereport only (mg/L)all year006
Total phenolsdaily maximumreport only (mg/L)all year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
pHinstantaneous minimum≥ 6 SUall year007
pHinstantaneous maximum≤ 9 SUall year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year007
Total phenolsmonthly averagereport only (mg/L)all year007
Total phenolsdaily maximumreport only (mg/L)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
pHinstantaneous minimum≥ 6 SUall year008
pHinstantaneous maximum≤ 9 SUall year008
Oil & Greasedaily maximum≤ 15 mg/Lall year008
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year008
Total phenolsmonthly averagereport only (mg/L)all year008
Total phenolsdaily maximumreport only (mg/L)all year008
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year008
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year008
pHinstantaneous minimum≥ 6 SUall year011
pHinstantaneous maximum≤ 9 SUall year011
Oil & Greasedaily maximum≤ 15 mg/Lall year011
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year011
Total phenolsmonthly averagereport only (mg/L)all year011
Total phenolsdaily maximumreport only (mg/L)all year011
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
pHinstantaneous minimum≥ 6 SUall year106
pHinstantaneous maximum≤ 9 SUall year106
Solids, total suspendeddaily maximumreport only (mg/L)all year106
Solids, total suspendeddaily maximum≤ 90 mg/Lall year106
Oil & Greasedaily maximum≤ 15 mg/Lall year106
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year106
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year106
Benzenedaily maximum≤ 50 ug/Lall year106
BTEXdaily maximum≤ 250 ug/Lall year106
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year106
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year106
Solids, total suspendedmonthly average≤ 30 mg/Lall year107
Solids, total suspendeddaily maximum≤ 45 mg/Lall year107
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year107
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year107

How strict are these limits?

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

Same industry: the 26 Petroleum Refining and Related Industries 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/LA0039390 · MCP: https://passage-data.com/mcp