MAIN IRON WORKS LLC

NPDES permit LA0104868 · Minor NON-POTW · effective, expires 2027-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

18values over a limit
0required values missing, on 0 form(s)
0of 36 forms filed late

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (7), Coliform, fecal general (4), BOD, carbonaceous [5 day, 20 C] (4).

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 (90)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Nitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
001Nitrogen, ammonia total [as N]DAILY 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
001Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedMO AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 45 mg/L all year
003Nitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
003Coliform, fecal generalDAILY MX <= 400 #/100mL all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L all year
008pHMINIMUM >= 6 SU all year
008pHMAXIMUM <= 9 SU all year
008Oil & GreaseDAILY MX <= 15 mg/L all year
008Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
009pHMINIMUM >= 6 SU all year
009pHMAXIMUM <= 9 SU all year
009Oil & GreaseDAILY MX <= 15 mg/L all year
009Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
010pHMINIMUM >= 6 SU all year
010pHMAXIMUM <= 9 SU all year
010Oil & GreaseDAILY MX <= 15 mg/L all year
010Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
010Flow, in conduit or thru treatment plantMO AVG report only all year
010Flow, in conduit or thru treatment plantDAILY MX report only all year
012pHMINIMUM >= 6 SU all year
012pHMAXIMUM <= 9 SU all year
012Solids, total suspendedMO AVG <= 30 mg/L all year
012Solids, total suspendedDAILY MX <= 45 mg/L all year
012Nitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
012Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
012Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
012Coliform, fecal generalDAILY MX <= 400 #/100mL all year
012BOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
012BOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L all year
013pHMINIMUM >= 6 SU all year
013pHMAXIMUM <= 9 SU all year
013Solids, total suspendedMO AVG <= 30 mg/L all year
013Solids, total suspendedDAILY MX <= 45 mg/L all year
013Nitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
013Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
013Flow, in conduit or thru treatment plantMO AVG report only all year
013Flow, in conduit or thru treatment plantDAILY MX report only all year
013Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
013Coliform, fecal generalDAILY MX <= 400 #/100mL all year
013BOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
013BOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L all year
02ApHMINIMUM >= 6 SU all year
02ApHMAXIMUM <= 9 SU all year
02ASolids, total suspendedMO AVG <= 30 mg/L all year
02ASolids, total suspendedDAILY MX <= 45 mg/L all year
02ANitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
02ANitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
02AFlow, in conduit or thru treatment plantMO AVG report only all year
02AFlow, in conduit or thru treatment plantDAILY MX report only all year
02AColiform, fecal generalMOAV GEO <= 200 #/100mL all year
02AColiform, fecal generalDAILY MX <= 400 #/100mL all year
02ABOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
02ABOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L all year
02BpHMINIMUM >= 6 SU all year
02BpHMAXIMUM <= 9 SU all year
02BSolids, total suspendedMO AVG <= 30 mg/L all year
02BSolids, total suspendedDAILY MX <= 45 mg/L all year
02BNitrogen, organic total [as N]DAILY MX <= 7.5 mg/L all year
02BNitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
02BFlow, in conduit or thru treatment plantMO AVG report only all year
02BFlow, in conduit or thru treatment plantDAILY MX report only all year
02BColiform, fecal generalMOAV GEO <= 200 #/100mL all year
02BColiform, fecal generalDAILY MX <= 400 #/100mL all year
02BBOD, carbonaceous [5 day, 20 C]MO AVG <= 30 mg/L all year
02BBOD, carbonaceous [5 day, 20 C]DAILY MX <= 45 mg/L 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