GULF ISLAND FABRICATION, INC.

NPDES permit LA0091961 · Minor NON-POTW · effective, expires 2028-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 76 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among LA permits in EPA's filings — check your permit).

Limits in force (148)

OutfallParameterStatisticLimitMonths
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 125 mg/L all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Oil and greaseDAILY MX <= 15 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
004BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
004BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Solids, total suspendedMO AVG <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 45 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
004Coliform, fecal generalDAILY MX <= 400 #/100mL all year
005BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
005BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 45 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
005Coliform, fecal generalDAILY MX <= 400 #/100mL all year
006Oxygen demand, chem. [high level] [COD]DAILY MX <= 125 mg/L all year
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007Oxygen demand, chem. [high level] [COD]DAILY MX <= 125 mg/L all year
007pHINST MIN >= 6 SU all year
007pHINST MAX <= 9 SU all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
01AOxygen demand, chem. [high level] [COD]DAILY MX <= 125 mg/L all year
01ApHINST MIN >= 6 SU all year
01ApHINST MAX <= 9 SU all year
01AOil & GreaseDAILY MX <= 15 mg/L all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01BOxygen demand, chem. [high level] [COD]DAILY MX <= 125 mg/L all year
01BpHINST MIN >= 6 SU all year
01BpHINST MAX <= 9 SU all year
01BOil & GreaseDAILY MX <= 15 mg/L all year
01BFlow, in conduit or thru treatment plantMO AVG report only all year
01BFlow, in conduit or thru treatment plantDAILY MX report only all year
101BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
101BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
101Solids, total suspendedMO AVG <= 30 mg/L all year
101Solids, total suspendedDAILY MX <= 45 mg/L all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
101Coliform, fecal generalDAILY MX <= 400 #/100mL all year
102BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
102BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
102Solids, total suspendedMO AVG <= 30 mg/L all year
102Solids, total suspendedDAILY MX <= 45 mg/L all year
102Flow, in conduit or thru treatment plantMO AVG report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
102Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
102Coliform, fecal generalDAILY MX <= 400 #/100mL all year
106BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
106BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
106Solids, total suspendedMO AVG <= 30 mg/L all year
106Solids, total suspendedDAILY MX <= 45 mg/L all year
106Flow, in conduit or thru treatment plantMO AVG report only all year
106Flow, in conduit or thru treatment plantDAILY MX report only all year
106Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
106Coliform, fecal generalDAILY MX <= 400 #/100mL all year
201BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
201BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
201Solids, total suspendedMO AVG <= 30 mg/L all year
201Solids, total suspendedDAILY MX <= 45 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
201Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
201Coliform, fecal generalDAILY MX <= 400 #/100mL all year
202BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
202BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
202Solids, total suspendedMO AVG <= 30 mg/L all year
202Solids, total suspendedDAILY MX <= 45 mg/L all year
202Flow, in conduit or thru treatment plantMO AVG report only all year
202Flow, in conduit or thru treatment plantDAILY MX report only all year
202Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
202Coliform, fecal generalDAILY MX <= 400 #/100mL all year
301BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
301BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
301Solids, total suspendedMO AVG <= 30 mg/L all year
301Solids, total suspendedDAILY MX <= 45 mg/L all year
301Flow, in conduit or thru treatment plantMO AVG report only all year
301Flow, in conduit or thru treatment plantDAILY MX report only all year
301Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
301Coliform, fecal generalDAILY MX <= 400 #/100mL all year
302BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
302BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
302Solids, total suspendedMO AVG <= 30 mg/L all year
302Solids, total suspendedDAILY MX <= 45 mg/L all year
302Flow, in conduit or thru treatment plantMO AVG report only all year
302Flow, in conduit or thru treatment plantDAILY MX report only all year
302Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
302Coliform, fecal generalDAILY MX <= 400 #/100mL all year
401BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
401BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
401Solids, total suspendedMO AVG <= 30 mg/L all year
401Solids, total suspendedDAILY MX <= 45 mg/L all year
401Flow, in conduit or thru treatment plantMO AVG report only all year
401Flow, in conduit or thru treatment plantDAILY MX report only all year
401Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
401Coliform, fecal generalDAILY MX <= 400 #/100mL all year
501BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
501BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
501Solids, total suspendedMO AVG <= 30 mg/L all year
501Solids, total suspendedDAILY MX <= 45 mg/L all year
501Flow, in conduit or thru treatment plantMO AVG report only all year
501Flow, in conduit or thru treatment plantDAILY MX report only all year
501Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
501Coliform, fecal generalDAILY MX <= 400 #/100mL all year
602ApHINST MIN >= 6 SU all year
602ApHINST MAX <= 9 SU all year
602ASolids, total suspendedDAILY MX <= 90 mg/L all year
602ASolids, total suspendedDAILY MX <= 90 mg/L all year
602AOil & GreaseDAILY MX <= 15 mg/L all year
602AFlow, in conduit or thru treatment plantMO AVG report only all year
602AFlow, in conduit or thru treatment plantDAILY MX report only all year
602BpHINST MIN >= 6 SU all year
602BpHINST MAX <= 9 SU all year
602BSolids, total suspendedDAILY MX <= 90 mg/L all year
602BSolids, total suspendedDAILY MX <= 90 mg/L all year
602BOil & GreaseDAILY MX <= 15 mg/L all year
602BCarbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
602BLead, total [as Pb]DAILY MX <= 50 ug/L all year
602BBenzeneDAILY MX <= 50 ug/L all year
602BBTEXDAILY MX <= 250 ug/L all year
602BFlow, in conduit or thru treatment plantMO AVG report only all year
602BFlow, in conduit or thru treatment plantDAILY MX report only all year
701BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
701BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
701Solids, total suspendedMO AVG <= 30 mg/L all year
701Solids, total suspendedDAILY MX <= 45 mg/L all year
701Flow, in conduit or thru treatment plantMO AVG report only all year
701Flow, in conduit or thru treatment plantDAILY MX report only all year
701Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
701Coliform, fecal generalDAILY MX <= 400 #/100mL all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states