LYONDELL CHEMICAL COMPANY

NPDES permit TX0069493 · Major NON-POTW · effective, expires 2030-12-02 · 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
5required values missing, on 4 form(s)
0of 77 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (200)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Solids, total suspendedDAILY AV <= 1015 lb/d all year
001Solids, total suspendedDAILY MX <= 3328 lb/d all year
001Oil & GreaseDAILY MX <= 399 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 46 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 183 lb/d all year
001Carbon, tot organic [TOC]DAILY AV report only all year
001Carbon, tot organic [TOC]DAILY MX <= 4581 lb/d all year
001Chromium, total [as Cr]DAILY AV <= 1.21 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 3.02 lb/d all year
001Copper, total [as Cu]DAILY AV <= 1.14 lb/d all year
001Copper, total [as Cu]DAILY MX <= 2.42 lb/d all year
001Carbon tetrachlorideDAILY AV <= .174 lb/d all year
001Carbon tetrachlorideDAILY MX <= .368 lb/d all year
0011,2-DichloroethaneDAILY AV <= .658 lb/d all year
0011,2-DichloroethaneDAILY MX <= 2.04 lb/d all year
001ChloroformDAILY AV <= .56 lb/d all year
001ChloroformDAILY MX <= 1.22 lb/d all year
001TolueneDAILY AV <= .251 lb/d all year
001TolueneDAILY MX <= .774 lb/d all year
001BenzeneDAILY AV <= .358 lb/d all year
001BenzeneDAILY MX <= 1.31 lb/d all year
001AcenaphthyleneDAILY AV <= .213 lb/d all year
001AcenaphthyleneDAILY MX <= .571 lb/d all year
001AcenaphtheneDAILY AV <= .213 lb/d all year
001AcenaphtheneDAILY MX <= .571 lb/d all year
001AcrylonitrileDAILY AV <= .929 lb/d all year
001AcrylonitrileDAILY MX <= 2.34 lb/d all year
001AnthraceneDAILY AV <= .213 lb/d all year
001AnthraceneDAILY MX <= .571 lb/d all year
001Benzo[k]fluorantheneDAILY AV <= .213 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= .571 lb/d all year
001Benzo[a]pyreneDAILY AV <= .0022 lb/d all year
001Benzo[a]pyreneDAILY MX <= .0048 lb/d all year
001ChlorobenzeneDAILY AV <= .145 lb/d all year
001ChlorobenzeneDAILY MX <= .271 lb/d all year
001ChryseneDAILY AV <= .213 lb/d all year
001ChryseneDAILY MX <= .571 lb/d all year
001Diethyl phthalateDAILY AV <= .784 lb/d all year
001Diethyl phthalateDAILY MX <= 1.96 lb/d all year
001Dimethyl phthalateDAILY AV <= .184 lb/d all year
001Dimethyl phthalateDAILY MX <= .455 lb/d all year
001EthylbenzeneDAILY AV <= .31 lb/d all year
001EthylbenzeneDAILY MX <= 1.04 lb/d all year
001FluorantheneDAILY AV <= .242 lb/d all year
001FluorantheneDAILY MX <= .658 lb/d all year
001FluoreneDAILY AV <= .213 lb/d all year
001FluoreneDAILY MX <= .571 lb/d all year
001HexachlorobutadieneDAILY AV <= .193 lb/d all year
001HexachlorobutadieneDAILY MX <= .424 lb/d all year
001HexachloroethaneDAILY AV <= .203 lb/d all year
001HexachloroethaneDAILY MX <= .523 lb/d all year
001Methyl chloride [Chloromethane]DAILY AV <= .833 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 1.84 lb/d all year
001Methylene chlorideDAILY AV <= .387 lb/d all year
001Methylene chlorideDAILY MX <= .862 lb/d all year
001NitrobenzeneDAILY AV <= .261 lb/d all year
001NitrobenzeneDAILY MX <= .658 lb/d all year
001PhenanthreneDAILY AV <= .213 lb/d all year
001PhenanthreneDAILY MX <= .571 lb/d all year
001PyreneDAILY AV <= .242 lb/d all year
001PyreneDAILY MX <= .649 lb/d all year
001TetrachloroethyleneDAILY AV <= .213 lb/d all year
001TetrachloroethyleneDAILY MX <= .542 lb/d all year
0011,1-DichloroethaneDAILY AV <= .213 lb/d all year
0011,1-DichloroethaneDAILY MX <= .571 lb/d all year
0011,1-DichloroethyleneDAILY AV <= .155 lb/d all year
0011,1-DichloroethyleneDAILY MX <= .242 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= .203 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= .523 lb/d all year
0011,1,2-TrichloroethaneDAILY AV <= .203 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= .523 lb/d all year
001Benzo[a]anthraceneDAILY AV <= .0228 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .0483 lb/d all year
0011,2-DichlorobenzeneDAILY AV <= .745 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= 1.57 lb/d all year
0011,2-DichloropropaneDAILY AV <= 1.48 lb/d all year
0011,2-DichloropropaneDAILY MX <= 2.22 lb/d all year
001trans-1,2-DichloroethyleneDAILY AV <= .203 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= .523 lb/d all year
0011,2,4-TrichlorobenzeneDAILY AV <= .658 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= 1.35 lb/d all year
0011,3-DichlorobenzeneDAILY AV <= .3 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= .426 lb/d all year
0011,4-DichlorobenzeneDAILY AV <= .145 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= .271 lb/d all year
0012-ChlorophenolDAILY AV <= .3 lb/d all year
0012-ChlorophenolDAILY MX <= .949 lb/d all year
0012-NitrophenolDAILY AV <= .397 lb/d all year
0012-NitrophenolDAILY MX <= .668 lb/d all year
0012,4-DichlorophenolDAILY AV <= .377 lb/d all year
0012,4-DichlorophenolDAILY MX <= 1.08 lb/d all year
0012,4-DimethylphenolDAILY AV <= .174 lb/d all year
0012,4-DimethylphenolDAILY MX <= .348 lb/d all year
0012,4-DinitrotolueneDAILY AV <= 1.09 lb/d all year
0012,4-DinitrotolueneDAILY MX <= 2.76 lb/d all year
0012,4-DinitrophenolDAILY AV <= .687 lb/d all year
0012,4-DinitrophenolDAILY MX <= 1.19 lb/d all year
0012,6-DinitrotolueneDAILY AV <= 2.46 lb/d all year
0012,6-DinitrotolueneDAILY MX <= 6.2 lb/d all year
0014-NitrophenolDAILY AV <= .697 lb/d all year
0014-NitrophenolDAILY MX <= 1.2 lb/d all year
0014,6-Dinitro-o-cresolDAILY AV <= .755 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= 2.68 lb/d all year
001PhenolDAILY AV <= .145 lb/d all year
001PhenolDAILY MX <= .251 lb/d all year
001NaphthaleneDAILY AV <= .213 lb/d all year
001NaphthaleneDAILY MX <= .571 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .997 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 2.7 lb/d all year
001Di-n-butyl phthalateDAILY AV <= .261 lb/d all year
001Di-n-butyl phthalateDAILY MX <= .552 lb/d all year
001Vinyl chlorideDAILY AV <= 1 lb/d all year
001Vinyl chlorideDAILY MX <= 2.59 lb/d all year
001TrichloroethyleneDAILY AV <= .203 lb/d all year
001TrichloroethyleneDAILY MX <= .523 lb/d all year
001HexachlorobenzeneDAILY AV <= .00061 lb/d all year
001HexachlorobenzeneDAILY MX <= .00131 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 3.2 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 7.2 MGD all year
0011,3-DichloropropyleneDAILY AV <= .28 lb/d all year
0011,3-DichloropropyleneDAILY MX <= .426 lb/d all year
0013,4-BenzofluorantheneDAILY AV <= .222 lb/d all year
0013,4-BenzofluorantheneDAILY MX <= .59 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 414 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 1016 lb/d all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001ChloroethaneDAILY AV <= 1 lb/d all year
001ChloroethaneDAILY MX <= 2.59 lb/d all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9.5 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
002Aluminum, total [as Al]DAILY MX report only 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 <= 75 mg/L all year
003Aluminum, total [as Al]DAILY MX report only 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
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
004Aluminum, total [as Al]DAILY MX report only all year
004Flow, in conduit or thru treatment plantDAILY AV report only all year
004Flow, 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 <= 75 mg/L all year
005Zinc, total [as Zn]DAILY MX report only all year
005Aluminum, total [as Al]DAILY MX report only 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 <= 75 mg/L all year
006Aluminum, total [as Al]DAILY MX report only 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
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 beryllina7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllinaMO 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 beryllina7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO 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 beryllina7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO 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 beryllina7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO 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 beryllina7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllinaMO 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 Growth Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllinaMO 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 beryllinaSINGGRAB 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