W R Grace & Co-Conn - Lake Charles Facility

NPDES permit LA0001333 · Major NON-POTW · effective, expires 2031-05-31 · 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
71required values missing, on 9 form(s)
0of 43 forms filed late

Last period with anything received: 2026-07-31.

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 (71)

OutfallParameterStatisticLimitMonths
001pHINST MIN report only all year
001pHINST MAX report only all year
001Solids, total suspendedMO AVG <= 953 lb/d all year
001Solids, total suspendedDAILY MX <= 1905 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2350 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 4699 lb/d all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Iron, total [as Fe]MO AVG report only all year
001Iron, total [as Fe]DAILY MX report only 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
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic Menidia beryllinaMAXIMUM report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 50 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
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 50 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
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 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
101BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
101BOD, 5-day, 20 deg. CDAILY 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
101EnterococciMOAV GEO <= 35 #/100mL all year
101EnterococciDAILY MX <= 135 #/100mL all year
101Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
101Coliform, fecal generalDAILY MX <= 400 #/100mL all year
500pHINST MIN >= 6 SU all year
500pHINST MAX <= 9 SU all year
500Solids, total suspendedDAILY MX <= 90 mg/L all year
500Solids, total suspendedDAILY MX <= 90 mg/L all year
500Oil & GreaseDAILY MX <= 15 mg/L all year
500Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
500Lead, total [as Pb]DAILY MX <= 50 ug/L all year
500BenzeneDAILY MX <= 50 ug/L all year
500BTEXDAILY MX <= 250 ug/L all year
500Flow, in conduit or thru treatment plantMO AVG report only all year
500Flow, in conduit or thru treatment plantDAILY MX report only 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