MONUMENT CHEMICAL HOUSTON LLC

NPDES permit TX0085979 · Minor NON-POTW · effective, expires 2028-11-16 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 40 forms filed late

Last period with anything received: 2026-08-31. Most often over: Oil & Grease (2).

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 (174)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY AV <= 29 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 55 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 37 lb/d all year
001Solids, total suspendedDAILY MX <= 55 lb/d all year
001Carbon, tot organic [TOC]DAILY AV <= 139 lb/d all year
001Carbon, tot organic [TOC]DAILY MX <= 206 lb/d all year
001Zinc, total [as Zn]DAILY AV <= .17 lb/d all year
001Zinc, total [as Zn]DAILY MX <= .35 lb/d all year
001Benzene, ethylbenzene, toluene, xylene combinationDAILY MX report only all year
001Carbon tetrachlorideDAILY AV <= .004 lb/d all year
001Carbon tetrachlorideDAILY MX <= .008 lb/d all year
0011,2-DichloroethaneDAILY AV <= .015 lb/d all year
0011,2-DichloroethaneDAILY MX <= .046 lb/d all year
001ChloroformDAILY AV <= .005 lb/d all year
001ChloroformDAILY MX <= .01 lb/d all year
001TolueneDAILY AV <= .006 lb/d all year
001TolueneDAILY MX <= .018 lb/d all year
001BenzeneDAILY AV <= .008 lb/d all year
001BenzeneDAILY MX <= .03 lb/d all year
001AcenaphthyleneDAILY AV <= .005 lb/d all year
001AcenaphthyleneDAILY MX <= .013 lb/d all year
001AcenaphtheneDAILY AV <= .005 lb/d all year
001AcenaphtheneDAILY MX <= .013 lb/d all year
001AcrylonitrileDAILY AV <= .021 lb/d all year
001AcrylonitrileDAILY MX <= .053 lb/d all year
001AnthraceneDAILY AV <= .005 lb/d all year
001AnthraceneDAILY MX <= .0013 lb/d all year
001Benzo[k]fluorantheneDAILY AV <= .005 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= .013 lb/d all year
001Benzo[a]pyreneDAILY AV <= .005 lb/d all year
001Benzo[a]pyreneDAILY MX <= .013 lb/d all year
001ChlorobenzeneDAILY AV <= .003 lb/d all year
001ChlorobenzeneDAILY MX <= .006 lb/d all year
001ChryseneDAILY AV <= .005 lb/d all year
001ChryseneDAILY MX <= .013 lb/d all year
001Diethyl phthalateDAILY AV <= .018 lb/d all year
001Diethyl phthalateDAILY MX <= .044 lb/d all year
001Dimethyl phthalateDAILY AV <= .004 lb/d all year
001Dimethyl phthalateDAILY MX <= .01 lb/d all year
001EthylbenzeneDAILY AV <= .007 lb/d all year
001EthylbenzeneDAILY MX <= .024 lb/d all year
001FluorantheneDAILY AV <= .005 lb/d all year
001FluorantheneDAILY MX <= .015 lb/d all year
001FluoreneDAILY AV <= .005 lb/d all year
001FluoreneDAILY MX <= .013 lb/d all year
001HexachlorobutadieneDAILY AV <= .004 lb/d all year
001HexachlorobutadieneDAILY MX <= .011 lb/d all year
001HexachloroethaneDAILY AV <= .005 lb/d all year
001HexachloroethaneDAILY MX <= .012 lb/d all year
001Methyl chloride [Chloromethane]DAILY AV <= .019 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= .042 lb/d all year
001Methylene chlorideDAILY AV <= .009 lb/d all year
001Methylene chlorideDAILY MX <= .019 lb/d all year
001NitrobenzeneDAILY AV <= .006 lb/d all year
001NitrobenzeneDAILY MX <= .015 lb/d all year
001PhenanthreneDAILY AV <= .005 lb/d all year
001PhenanthreneDAILY MX <= .013 lb/d all year
001PyreneDAILY AV <= .005 lb/d all year
001PyreneDAILY MX <= .015 lb/d all year
001TetrachloroethyleneDAILY AV <= .005 lb/d all year
001TetrachloroethyleneDAILY MX <= .012 lb/d all year
0011,1-DichloroethaneDAILY AV <= .005 lb/d all year
0011,1-DichloroethaneDAILY MX <= .013 lb/d all year
0011,1-DichloroethyleneDAILY AV <= .004 lb/d all year
0011,1-DichloroethyleneDAILY MX <= .005 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= .005 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= .012 lb/d all year
0011,1,2-TrichloroethaneDAILY AV <= .005 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= .012 lb/d all year
001Benzo[a]anthraceneDAILY AV <= .005 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .013 lb/d all year
0011,2-DichlorobenzeneDAILY AV <= .017 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= .036 lb/d all year
0011,2-DichloropropaneDAILY AV <= .034 lb/d all year
0011,2-DichloropropaneDAILY MX <= .05 lb/d all year
001trans-1,2-DichloroethyleneDAILY AV <= .005 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= .012 lb/d all year
0011,2,4-TrichlorobenzeneDAILY AV <= .015 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= .031 lb/d all year
0011,3-DichlorobenzeneDAILY AV <= .007 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= .01 lb/d all year
0011,4-DichlorobenzeneDAILY AV <= .003 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= .006 lb/d all year
0012-ChlorophenolDAILY AV <= .007 lb/d all year
0012-ChlorophenolDAILY MX <= .021 lb/d all year
0012-NitrophenolDAILY AV <= .009 lb/d all year
0012-NitrophenolDAILY MX <= .015 lb/d all year
0012,4-DichlorophenolDAILY AV <= .009 lb/d all year
0012,4-DichlorophenolDAILY MX <= .025 lb/d all year
0012,4-DimethylphenolDAILY AV <= .004 lb/d all year
0012,4-DimethylphenolDAILY MX <= .008 lb/d all year
0012,4-DinitrotolueneDAILY AV <= .025 lb/d all year
0012,4-DinitrotolueneDAILY MX <= .062 lb/d all year
0012,4-DinitrophenolDAILY AV <= .016 lb/d all year
0012,4-DinitrophenolDAILY MX <= .027 lb/d all year
0012,6-DinitrotolueneDAILY AV <= .056 lb/d all year
0012,6-DinitrotolueneDAILY MX <= .14 lb/d all year
0014-NitrophenolDAILY AV <= .016 lb/d all year
0014-NitrophenolDAILY MX <= .027 lb/d all year
0014,6-Dinitro-o-cresolDAILY AV <= .017 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= .061 lb/d all year
001PhenolDAILY AV <= .003 lb/d all year
001PhenolDAILY MX <= .006 lb/d all year
001NaphthaleneDAILY AV <= .005 lb/d all year
001NaphthaleneDAILY MX <= .013 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .023 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .061 lb/d all year
001Di-n-butyl phthalateDAILY AV <= .006 lb/d all year
001Di-n-butyl phthalateDAILY MX <= .012 lb/d all year
001Vinyl chlorideDAILY AV <= .023 lb/d all year
001Vinyl chlorideDAILY MX <= .059 lb/d all year
001TrichloroethyleneDAILY AV <= .005 lb/d all year
001TrichloroethyleneDAILY MX <= .012 lb/d all year
001HexachlorobenzeneDAILY AV <= .00054 lb/d all year
001HexachlorobenzeneDAILY MX <= .00114 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .22 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .44 MGD all year
0011,3-DichloropropyleneDAILY AV <= .006 lb/d all year
0011,3-DichloropropyleneDAILY MX <= .01 lb/d all year
001EnterococciDAILY AV <= 168 MPN/100mL all year
001EnterococciDAILY MX report only all year
0013,4-BenzofluorantheneDAILY AV <= .005 lb/d all year
0013,4-BenzofluorantheneDAILY MX <= .013 lb/d all year
001ChloroethaneDAILY AV <= .023 lb/d all year
001ChloroethaneDAILY MX <= .059 lb/d all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY AV <= 15 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
002Zinc, total [as Zn]DAILY AV <= .24 mg/L all year
002Zinc, total [as Zn]DAILY MX <= .5 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
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, 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
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN >= 8 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)MO AV MN >= 8 % 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 beryllinaSINGSAMP 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