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Conrad Shipyards LLC

Ship Building And Repairing, Amelia, Louisiana. NPDES permit LA0116386 expired Oct 31, 2026. 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 (6 values), outfall 002 form Q quarterly (6 values), outfall 004 form A quarterly (14 values), outfall 005 form Q quarterly (11 values), outfall 006 form Q quarterly (6 values), outfall 03B form A quarterly (14 values), and 1 more form
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 44 reports late

Limits in force (65)

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
pHinstantaneous minimum≥ 6 SUall year004
pHinstantaneous minimum≥ 6 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Solids, total suspendeddaily maximum≤ 62 mg/Lall year004
Solids, total suspendeddaily maximum≤ 62 mg/Lall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year004
pHinstantaneous minimum≥ 6 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Solids, total suspendeddaily maximum≤ 90 mg/Lall year005
Solids, total suspendeddaily maximum≤ 90 mg/Lall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year005
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year005
Benzenedaily maximum≤ 50 ug/Lall year005
BTEXdaily maximum≤ 250 ug/Lall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Oxygen demand, chem. [high level] [COD]daily maximum≤ 250 mg/Lall year03B
Oxygen demand, chem. [high level] [COD]daily maximum≤ 250 mg/Lall year03B
pHinstantaneous minimum≥ 6 SUall year03B
pHinstantaneous minimum≥ 6 SUall year03B
pHinstantaneous maximum≤ 9 SUall year03B
pHinstantaneous maximum≤ 9 SUall year03B
Oil & Greasedaily maximum≤ 15 mg/Lall year03B
Oil & Greasedaily maximum≤ 15 mg/Lall year03B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year03B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year03B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year03B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year03B
Oil and grease visualdaily maximum≤ 0 occur/dall year03B
Oil and grease visualdaily maximum≤ 0 occur/dall year03B
Oxygen demand, chem. [high level] [COD]monthly average≤ 200 mg/Lall year101
Oxygen demand, chem. [high level] [COD]daily maximum≤ 300 mg/Lall year101
pHinstantaneous minimum≥ 6 SUall year101
pHinstantaneous maximum≤ 9 SUall year101
Solids, total suspendeddaily maximum≤ 45 mg/Lall year101
Oil & Greasedaily maximum≤ 15 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

How strict are these limits?

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

Same industry: the 15 Transportation Equipment 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/LA0116386 · MCP: https://passage-data.com/mcp