NORTH AMERICAN SHIPBUILDING, LLC

NPDES permit LA0105856 · Minor NON-POTW · effective, expires 2027-11-30 · 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)
3of 24 forms filed late

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

Reporting

Reports are due about 89 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (36)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
001Oil and greaseDAILY MX <= 15 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 250 mg/L all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 250 mg/L all year
002pHINST MIN >= 6 SU all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002pHINST MAX <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Oil & 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 plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Oil and grease visualDAILY MX <= 0 occur/d all year
002Oil and grease visualDAILY MX <= 0 occur/d all year
902BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
902BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
902BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
902BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
902Solids, total suspendedMO AVG <= 30 mg/L all year
902Solids, total suspendedMO AVG <= 30 mg/L all year
902Solids, total suspendedDAILY MX <= 45 mg/L all year
902Solids, total suspendedDAILY MX <= 45 mg/L all year
902Flow, in conduit or thru treatment plantMO AVG report only all year
902Flow, in conduit or thru treatment plantMO AVG report only all year
902Flow, in conduit or thru treatment plantDAILY MX report only all year
902Flow, in conduit or thru treatment plantDAILY MX report only all year
902Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
902Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
902Coliform, fecal generalDAILY MX <= 400 #/100mL all year
902Coliform, 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