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Industrial Organic Chemicals, major discharger, Port Lavaca, Texas. NPDES permit TX0077577, in force until Jul 14, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily average | ≤ 57 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 120 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 151 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 455 lb/d | all year | 001 |
| Oil & Grease | daily average | ≤ 39 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 74 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 70 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 140 lb/d | all year | 001 |
| Cyanide, free [as free] | daily average | ≤ .05 lb/d | all year | 001 |
| Cyanide, free [as free] | daily maximum | ≤ .1 lb/d | all year | 001 |
| Copper, total [as Cu] | daily average | ≤ .16 lb/d | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .33 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 1.2 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2 MGD | all year | 001 |
| Chlorine, total residual | monthly minimum | ≥ 1 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 101 |
| pH | maximum | ≤ 9 SU | all year | 101 |
| Carbon tetrachloride | daily average | ≤ .142 mg/L | all year | 101 |
| Carbon tetrachloride | daily maximum | ≤ .38 mg/L | all year | 101 |
| 1,2-Dichloroethane | daily average | ≤ .18 mg/L | all year | 101 |
| 1,2-Dichloroethane | daily maximum | ≤ .574 mg/L | all year | 101 |
| Chloroform | daily average | ≤ .111 mg/L | all year | 101 |
| Chloroform | daily maximum | ≤ .325 mg/L | all year | 101 |
| Toluene | daily average | ≤ .028 mg/L | all year | 101 |
| Toluene | daily maximum | ≤ .074 mg/L | all year | 101 |
| Benzene | daily average | ≤ .057 mg/L | all year | 101 |
| Benzene | daily maximum | ≤ .134 mg/L | all year | 101 |
| Acenaphthylene | daily average | ≤ .019 mg/L | all year | 101 |
| Acenaphthylene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Acenaphthene | daily average | ≤ .019 mg/L | all year | 101 |
| Acenaphthene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Acrylonitrile | daily average | ≤ .094 mg/L | all year | 101 |
| Acrylonitrile | daily maximum | ≤ .232 mg/L | all year | 101 |
| Anthracene | daily average | ≤ .019 mg/L | all year | 101 |
| Anthracene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Benzo[b]fluoranthene | daily average | ≤ .02 mg/L | all year | 101 |
| Benzo[b]fluoranthene | daily maximum | ≤ .048 mg/L | all year | 101 |
| Benzo[k]fluoranthene | daily average | ≤ .095 mg/L | all year | 101 |
| Benzo[k]fluoranthene | daily maximum | ≤ .258 mg/L | all year | 101 |
| Benzo[a]pyrene | daily average | ≤ .142 mg/L | all year | 101 |
| Benzo[a]pyrene | daily maximum | ≤ .38 mg/L | all year | 101 |
| Chlorobenzene | daily average | ≤ .142 mg/L | all year | 101 |
| Chlorobenzene | daily maximum | ≤ .38 mg/L | all year | 101 |
| Chrysene | daily average | ≤ .019 mg/L | all year | 101 |
| Chrysene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Diethyl phthalate | daily average | ≤ .046 mg/L | all year | 101 |
| Diethyl phthalate | daily maximum | ≤ .113 mg/L | all year | 101 |
| Dimethyl phthalate | daily average | ≤ .019 mg/L | all year | 101 |
| Dimethyl phthalate | daily maximum | ≤ .047 mg/L | all year | 101 |
| Ethylbenzene | daily average | ≤ .142 mg/L | all year | 101 |
| Ethylbenzene | daily maximum | ≤ .38 mg/L | all year | 101 |
| Fluoranthene | daily average | ≤ .022 mg/L | all year | 101 |
| Fluoranthene | daily maximum | ≤ .054 mg/L | all year | 101 |
| Fluorene | daily average | ≤ .019 mg/L | all year | 101 |
| Fluorene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Hexachlorobutadiene | daily average | ≤ .142 mg/L | all year | 101 |
| Hexachlorobutadiene | daily maximum | ≤ .38 mg/L | all year | 101 |
| Hexachloroethane | daily average | ≤ .196 mg/L | all year | 101 |
| Hexachloroethane | daily maximum | ≤ .794 mg/L | all year | 101 |
| Methyl chloride [Chloromethane] | daily average | ≤ .11 mg/L | all year | 101 |
| Methyl chloride [Chloromethane] | daily maximum | ≤ .295 mg/L | all year | 101 |
| Methylene chloride | daily average | ≤ .036 mg/L | all year | 101 |
| Methylene chloride | daily maximum | ≤ .17 mg/L | all year | 101 |
| Nitrobenzene | daily average | ≤ 2.237 mg/L | all year | 101 |
| Nitrobenzene | daily maximum | ≤ 6.402 mg/L | all year | 101 |
| Phenanthrene | daily average | ≤ .019 mg/L | all year | 101 |
| Phenanthrene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Pyrene | daily average | ≤ .02 mg/L | all year | 101 |
| Pyrene | daily maximum | ≤ .048 mg/L | all year | 101 |
| Tetrachloroethylene | daily average | ≤ .052 mg/L | all year | 101 |
| Tetrachloroethylene | daily maximum | ≤ .164 mg/L | all year | 101 |
| 1,1-Dichloroethane | daily average | ≤ .022 mg/L | all year | 101 |
| 1,1-Dichloroethane | daily maximum | ≤ .059 mg/L | all year | 101 |
| 1,1-Dichloroethylene | daily average | ≤ .022 mg/L | all year | 101 |
| 1,1-Dichloroethylene | daily maximum | ≤ .06 mg/L | all year | 101 |
| 1,1,1-Trichloroethane | daily average | ≤ .022 mg/L | all year | 101 |
| 1,1,1-Trichloroethane | daily maximum | ≤ .059 mg/L | all year | 101 |
| 1,1,2-Trichloroethane | daily average | ≤ .032 mg/L | all year | 101 |
| 1,1,2-Trichloroethane | daily maximum | ≤ .127 mg/L | all year | 101 |
| Benzo[a]anthracene | daily average | ≤ .019 mg/L | all year | 101 |
| Benzo[a]anthracene | daily maximum | ≤ .047 mg/L | all year | 101 |
| 1,2-Dichlorobenzene | daily average | ≤ .196 mg/L | all year | 101 |
| 1,2-Dichlorobenzene | daily maximum | ≤ .794 mg/L | all year | 101 |
| 1,2-Dichloropropane | daily average | ≤ .196 mg/L | all year | 101 |
| 1,2-Dichloropropane | daily maximum | ≤ .794 mg/L | all year | 101 |
| trans-1,2-Dichloroethylene | daily average | ≤ .025 mg/L | all year | 101 |
| trans-1,2-Dichloroethylene | daily maximum | ≤ .066 mg/L | all year | 101 |
| 1,2,4-Trichlorobenzene | daily average | ≤ .196 mg/L | all year | 101 |
| 1,2,4-Trichlorobenzene | daily maximum | ≤ .794 mg/L | all year | 101 |
| 1,3-Dichlorobenzene | daily average | ≤ .142 mg/L | all year | 101 |
| 1,3-Dichlorobenzene | daily maximum | ≤ .38 mg/L | all year | 101 |
| 1,4-Dichlorobenzene | daily average | ≤ .142 mg/L | all year | 101 |
| 1,4-Dichlorobenzene | daily maximum | ≤ .38 mg/L | all year | 101 |
| 2-Nitrophenol | daily average | ≤ .065 mg/L | all year | 101 |
| 2-Nitrophenol | daily maximum | ≤ .231 mg/L | all year | 101 |
| 2,4-Dimethylphenol | daily average | ≤ .019 mg/L | all year | 101 |
| 2,4-Dimethylphenol | daily maximum | ≤ .047 mg/L | all year | 101 |
| 2,4-Dinitrophenol | daily average | ≤ 1.207 mg/L | all year | 101 |
| 2,4-Dinitrophenol | daily maximum | ≤ 4.291 mg/L | all year | 101 |
| 4-Nitrophenol | daily average | ≤ .162 mg/L | all year | 101 |
| 4-Nitrophenol | daily maximum | ≤ .576 mg/L | all year | 101 |
| 4,6-Dinitro-o-cresol | daily average | ≤ .078 mg/L | all year | 101 |
| 4,6-Dinitro-o-cresol | daily maximum | ≤ .277 mg/L | all year | 101 |
| Phenol | daily average | ≤ .019 mg/L | all year | 101 |
| Phenol | daily maximum | ≤ .047 mg/L | all year | 101 |
| Naphthalene | daily average | ≤ .019 mg/L | all year | 101 |
| Naphthalene | daily maximum | ≤ .047 mg/L | all year | 101 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily average | ≤ .095 mg/L | all year | 101 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ .258 mg/L | all year | 101 |
| Di-n-butyl phthalate | daily average | ≤ .02 mg/L | all year | 101 |
| Di-n-butyl phthalate | daily maximum | ≤ .043 mg/L | all year | 101 |
| Vinyl chloride | daily average | ≤ .097 mg/L | all year | 101 |
| Vinyl chloride | daily maximum | ≤ .172 mg/L | all year | 101 |
| Trichloroethylene | daily average | ≤ .026 mg/L | all year | 101 |
| Trichloroethylene | daily maximum | ≤ .069 mg/L | all year | 101 |
| Hexachlorobenzene | daily average | ≤ .196 mg/L | all year | 101 |
| Hexachlorobenzene | daily maximum | ≤ .794 mg/L | all year | 101 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| 1,3-Dichloropropylene | daily average | ≤ .196 mg/L | all year | 101 |
| 1,3-Dichloropropylene | daily maximum | ≤ .794 mg/L | all year | 101 |
| Chloroethane | daily average | ≤ .11 mg/L | all year | 101 |
| Chloroethane | daily maximum | ≤ .295 mg/L | all year | 101 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX1 |
| Whole effluent toxicity - retest #1 | single sample | report only (pass=0;fail=1) | all year | TXA |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | single sample | report only (pass=0;fail=1) | all year | TXA |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 165 Chemicals and Allied Products permits in Texas.
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