Clean Water Act discharge permit · NPDES TX0085979
MONUMENT CHEMICAL HOUSTON, Houston, TX: NPDES TX0085979 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 82Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
MONUMENT CHEMICAL HOUSTON, held by MONUMNET CHEMICAL HOUSTON LLC, holds NPDES permit TX0085979, which discharges to Capenters Bayou Barge Canal, Hsct. EPA’s file records it issued July 27, 2018 and expiring July 27, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MONUMENT CHEMICAL HOUSTON |
|---|---|
| Permittee as filed | MONUMNET CHEMICAL HOUSTON LLC |
| NPDES ID | TX0085979 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 27, 2018 |
| Expiration date | July 27, 2023 |
| Address | Houston, TX 77015 |
| Receiving water | CAPENTERS BAYOU BARGE CANAL, HSCT |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Carpenters Bayou (HUC 120401040702) |
| SIC | 2869 – Industrial Organic Chemicals |
| Other EPA IDs (FRS) | RCRA handler TXD096037932; ICIS-AIR source TX0000004820100310 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 83Pollutants on file
- 82Under a numeric limit
- 28With a violation of any kind
- 10With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 83 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 23 | 21 | January 31, 2024 | 99,999% over the limit |
| Oil & Grease | 2 | 19 | 17 | November 30, 2025 | 847% over the limit |
| Zinc, total [as Zn] | 4 | 15 | 11 | February 28, 2022 | 175% over the limit |
| Solids, total suspended | 2 | 10 | 8 | July 31, 2025 | 378% over the limit |
| Coliform, fecal general | 0 | 8 | 6 | June 30, 2013 | 4,900% over the limit |
| Enterococci | 2 | 4 | 4 | July 31, 2022 | 556% over the limit |
| Ethylbenzene | 2 | 30 | 2 | July 31, 2021 | 257% over the limit |
| Carbon, tot organic [TOC] | 3 | 6 | 2 | January 31, 2019 | 12% over the limit |
| Benzene | 2 | 4 | 2 | July 31, 2021 | 988% over the limit |
| pH | 6 | 9 | 1 | January 31, 2025 | |
| Flow, in conduit or thru treatment plant | 6 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 4 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 4 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 4 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 4 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 4 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 1 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 2 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 2 | 0 | ||
| Toluene | 2 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| Chlorobenzene | 2 | 1 | 0 | ||
| Carbon tetrachloride | 2 | 0 | 0 | ||
| 1,2-Dichloroethane | 2 | 0 | 0 | ||
| Chloroform | 2 | 0 | 0 | ||
| Acenaphthylene | 2 | 0 | 0 | ||
| Acenaphthene | 2 | 0 | 0 | ||
| Acrylonitrile | 2 | 0 | 0 | ||
| Anthracene | 2 | 0 | 0 | ||
| Benzo[k]fluoranthene | 2 | 0 | 0 | ||
| Benzo[a]pyrene | 2 | 0 | 0 | ||
| Chrysene | 2 | 0 | 0 | ||
| Diethyl phthalate | 2 | 0 | 0 | ||
| Dimethyl phthalate | 2 | 0 | 0 | ||
| Fluoranthene | 2 | 0 | 0 | ||
| Fluorene | 2 | 0 | 0 | ||
| Hexachlorobutadiene | 2 | 0 | 0 | ||
| Hexachloroethane | 2 | 0 | 0 | ||
| Methyl chloride [Chloromethane] | 2 | 0 | 0 | ||
| Methylene chloride | 2 | 0 | 0 | ||
| Nitrobenzene | 2 | 0 | 0 | ||
| Phenanthrene | 2 | 0 | 0 | ||
| Pyrene | 2 | 0 | 0 | ||
| Tetrachloroethylene | 2 | 0 | 0 | ||
| 1,1-Dichloroethane | 2 | 0 | 0 | ||
| 1,1-Dichloroethylene | 2 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 2 | 0 | 0 | ||
| 1,1,2-Trichloroethane | 2 | 0 | 0 | ||
| Benzo[a]anthracene | 2 | 0 | 0 | ||
| 1,2-Dichlorobenzene | 2 | 0 | 0 | ||
| 1,2-Dichloropropane | 2 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 2 | 0 | 0 | ||
| 1,2,4-Trichlorobenzene | 2 | 0 | 0 | ||
| 1,3-Dichlorobenzene | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0085979.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.