INEOS NITRILES USA, LLC

NPDES permit TX0077577 · Major NON-POTW · effective, expires 2027-07-14 · 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 84 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (187)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY AV <= 57 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 120 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 151 lb/d all year
001Solids, total suspendedDAILY MX <= 455 lb/d all year
001Oil & GreaseDAILY AV <= 39 lb/d all year
001Oil & GreaseDAILY MX <= 74 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 70 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 140 lb/d all year
001Cyanide, free [as free]DAILY AV <= .05 lb/d all year
001Cyanide, free [as free]DAILY MX <= .1 lb/d all year
001Copper, total [as Cu]DAILY AV <= .16 lb/d all year
001Copper, total [as Cu]DAILY MX <= .33 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 1.2 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 2 MGD all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
005Flow, in conduit or thru treatment plantDAILY AV report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
006Flow, in conduit or thru treatment plantDAILY AV report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
007Flow, in conduit or thru treatment plantDAILY AV report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Carbon tetrachlorideDAILY AV <= .142 mg/L all year
101Carbon tetrachlorideDAILY MX <= .38 mg/L all year
1011,2-DichloroethaneDAILY AV <= .18 mg/L all year
1011,2-DichloroethaneDAILY MX <= .574 mg/L all year
101ChloroformDAILY AV <= .111 mg/L all year
101ChloroformDAILY MX <= .325 mg/L all year
101TolueneDAILY AV <= .028 mg/L all year
101TolueneDAILY MX <= .074 mg/L all year
101BenzeneDAILY AV <= .057 mg/L all year
101BenzeneDAILY MX <= .134 mg/L all year
101AcenaphthyleneDAILY AV <= .019 mg/L all year
101AcenaphthyleneDAILY MX <= .047 mg/L all year
101AcenaphtheneDAILY AV <= .019 mg/L all year
101AcenaphtheneDAILY MX <= .047 mg/L all year
101AcrylonitrileDAILY AV <= .094 mg/L all year
101AcrylonitrileDAILY MX <= .232 mg/L all year
101AnthraceneDAILY AV <= .019 mg/L all year
101AnthraceneDAILY MX <= .047 mg/L all year
101Benzo[b]fluorantheneDAILY AV <= .02 mg/L all year
101Benzo[b]fluorantheneDAILY MX <= .048 mg/L all year
101Benzo[k]fluorantheneDAILY AV <= .095 mg/L all year
101Benzo[k]fluorantheneDAILY MX <= .258 mg/L all year
101Benzo[a]pyreneDAILY AV <= .142 mg/L all year
101Benzo[a]pyreneDAILY MX <= .38 mg/L all year
101ChlorobenzeneDAILY AV <= .142 mg/L all year
101ChlorobenzeneDAILY MX <= .38 mg/L all year
101ChryseneDAILY AV <= .019 mg/L all year
101ChryseneDAILY MX <= .047 mg/L all year
101Diethyl phthalateDAILY AV <= .046 mg/L all year
101Diethyl phthalateDAILY MX <= .113 mg/L all year
101Dimethyl phthalateDAILY AV <= .019 mg/L all year
101Dimethyl phthalateDAILY MX <= .047 mg/L all year
101EthylbenzeneDAILY AV <= .142 mg/L all year
101EthylbenzeneDAILY MX <= .38 mg/L all year
101FluorantheneDAILY AV <= .022 mg/L all year
101FluorantheneDAILY MX <= .054 mg/L all year
101FluoreneDAILY AV <= .019 mg/L all year
101FluoreneDAILY MX <= .047 mg/L all year
101HexachlorobutadieneDAILY AV <= .142 mg/L all year
101HexachlorobutadieneDAILY MX <= .38 mg/L all year
101HexachloroethaneDAILY AV <= .196 mg/L all year
101HexachloroethaneDAILY MX <= .794 mg/L all year
101Methyl chloride [Chloromethane]DAILY AV <= .11 mg/L all year
101Methyl chloride [Chloromethane]DAILY MX <= .295 mg/L all year
101Methylene chlorideDAILY AV <= .036 mg/L all year
101Methylene chlorideDAILY MX <= .17 mg/L all year
101NitrobenzeneDAILY AV <= 2.237 mg/L all year
101NitrobenzeneDAILY MX <= 6.402 mg/L all year
101PhenanthreneDAILY AV <= .019 mg/L all year
101PhenanthreneDAILY MX <= .047 mg/L all year
101PyreneDAILY AV <= .02 mg/L all year
101PyreneDAILY MX <= .048 mg/L all year
101TetrachloroethyleneDAILY AV <= .052 mg/L all year
101TetrachloroethyleneDAILY MX <= .164 mg/L all year
1011,1-DichloroethaneDAILY AV <= .022 mg/L all year
1011,1-DichloroethaneDAILY MX <= .059 mg/L all year
1011,1-DichloroethyleneDAILY AV <= .022 mg/L all year
1011,1-DichloroethyleneDAILY MX <= .06 mg/L all year
1011,1,1-TrichloroethaneDAILY AV <= .022 mg/L all year
1011,1,1-TrichloroethaneDAILY MX <= .059 mg/L all year
1011,1,2-TrichloroethaneDAILY AV <= .032 mg/L all year
1011,1,2-TrichloroethaneDAILY MX <= .127 mg/L all year
101Benzo[a]anthraceneDAILY AV <= .019 mg/L all year
101Benzo[a]anthraceneDAILY MX <= .047 mg/L all year
1011,2-DichlorobenzeneDAILY AV <= .196 mg/L all year
1011,2-DichlorobenzeneDAILY MX <= .794 mg/L all year
1011,2-DichloropropaneDAILY AV <= .196 mg/L all year
1011,2-DichloropropaneDAILY MX <= .794 mg/L all year
101trans-1,2-DichloroethyleneDAILY AV <= .025 mg/L all year
101trans-1,2-DichloroethyleneDAILY MX <= .066 mg/L all year
1011,2,4-TrichlorobenzeneDAILY AV <= .196 mg/L all year
1011,2,4-TrichlorobenzeneDAILY MX <= .794 mg/L all year
1011,3-DichlorobenzeneDAILY AV <= .142 mg/L all year
1011,3-DichlorobenzeneDAILY MX <= .38 mg/L all year
1011,4-DichlorobenzeneDAILY AV <= .142 mg/L all year
1011,4-DichlorobenzeneDAILY MX <= .38 mg/L all year
1012-NitrophenolDAILY AV <= .065 mg/L all year
1012-NitrophenolDAILY MX <= .231 mg/L all year
1012,4-DimethylphenolDAILY AV <= .019 mg/L all year
1012,4-DimethylphenolDAILY MX <= .047 mg/L all year
1012,4-DinitrophenolDAILY AV <= 1.207 mg/L all year
1012,4-DinitrophenolDAILY MX <= 4.291 mg/L all year
1014-NitrophenolDAILY AV <= .162 mg/L all year
1014-NitrophenolDAILY MX <= .576 mg/L all year
1014,6-Dinitro-o-cresolDAILY AV <= .078 mg/L all year
1014,6-Dinitro-o-cresolDAILY MX <= .277 mg/L all year
101PhenolDAILY AV <= .019 mg/L all year
101PhenolDAILY MX <= .047 mg/L all year
101NaphthaleneDAILY AV <= .019 mg/L all year
101NaphthaleneDAILY MX <= .047 mg/L all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .095 mg/L all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .258 mg/L all year
101Di-n-butyl phthalateDAILY AV <= .02 mg/L all year
101Di-n-butyl phthalateDAILY MX <= .043 mg/L all year
101Vinyl chlorideDAILY AV <= .097 mg/L all year
101Vinyl chlorideDAILY MX <= .172 mg/L all year
101TrichloroethyleneDAILY AV <= .026 mg/L all year
101TrichloroethyleneDAILY MX <= .069 mg/L all year
101HexachlorobenzeneDAILY AV <= .196 mg/L all year
101HexachlorobenzeneDAILY MX <= .794 mg/L all year
101Flow, in conduit or thru treatment plantDAILY AV report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
1011,3-DichloropropyleneDAILY AV <= .196 mg/L all year
1011,3-DichloropropyleneDAILY MX <= .794 mg/L all year
101ChloroethaneDAILY AV <= .11 mg/L all year
101ChloroethaneDAILY MX <= .295 mg/L all year
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP 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