NPDES permit TX0095559 · Minor NON-POTW · effective, expires 2029-09-06 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31. Most often over: Zinc, total [as Zn] (1).
Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen, dissolved [DO] | MO MIN | >= 2 mg/L | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 29.2 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 80.6 lb/d | all year |
| 001 | Oil & Grease | DAILY AV | <= 7.7 lb/d | all year |
| 001 | Oil & Grease | DAILY MX | <= 15.5 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 3.5 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 6.7 lb/d | Jan, Feb, Mar, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 7 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 13.4 lb/d | Jan, Feb, Mar, Nov, Dec |
| 001 | Phosphorus, total [as P] | DAILY MX | <= 33.4 lb/d | all year |
| 001 | Carbon, tot organic [TOC] | DAILY AV | <= 167 lb/d | all year |
| 001 | Carbon, tot organic [TOC] | DAILY MX | <= 334 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .012 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .026 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= .13 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .28 lb/d | all year |
| 001 | Carbon tetrachloride | DAILY AV | <= .0096 lb/d | all year |
| 001 | Carbon tetrachloride | DAILY MX | <= .02 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY AV | <= .036 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY MX | <= .11 lb/d | all year |
| 001 | Chloroform | DAILY AV | <= .011 lb/d | all year |
| 001 | Chloroform | DAILY MX | <= .025 lb/d | all year |
| 001 | Toluene | DAILY AV | <= .014 lb/d | all year |
| 001 | Toluene | DAILY MX | <= .043 lb/d | all year |
| 001 | Benzene | DAILY AV | <= .02 lb/d | all year |
| 001 | Benzene | DAILY MX | <= .073 lb/d | all year |
| 001 | Acenaphthylene | DAILY AV | <= .012 lb/d | all year |
| 001 | Acenaphthylene | DAILY MX | <= .032 lb/d | all year |
| 001 | Acenaphthene | DAILY AV | <= .012 lb/d | all year |
| 001 | Acenaphthene | DAILY MX | <= .032 lb/d | all year |
| 001 | Acrylonitrile | DAILY AV | <= .051 lb/d | all year |
| 001 | Acrylonitrile | DAILY MX | <= .13 lb/d | all year |
| 001 | Anthracene | DAILY AV | <= .012 lb/d | all year |
| 001 | Anthracene | DAILY MX | <= .032 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY AV | <= .012 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY MX | <= .032 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY AV | <= .00008 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY MX | <= .00017 lb/d | all year |
| 001 | Chlorobenzene | DAILY AV | <= .008 lb/d | all year |
| 001 | Chlorobenzene | DAILY MX | <= .015 lb/d | all year |
| 001 | Chrysene | DAILY AV | <= .012 lb/d | all year |
| 001 | Chrysene | DAILY MX | <= .032 lb/d | all year |
| 001 | Diethyl phthalate | DAILY AV | <= .043 lb/d | all year |
| 001 | Diethyl phthalate | DAILY MX | <= .11 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY AV | <= .01 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY MX | <= .025 lb/d | all year |
| 001 | Ethylbenzene | DAILY AV | <= .017 lb/d | all year |
| 001 | Ethylbenzene | DAILY MX | <= .058 lb/d | all year |
| 001 | Fluoranthene | DAILY AV | <= .013 lb/d | all year |
| 001 | Fluoranthene | DAILY MX | <= .036 lb/d | all year |
| 001 | Fluorene | DAILY AV | <= .012 lb/d | all year |
| 001 | Fluorene | DAILY MX | <= .032 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY AV | <= .0069 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY MX | <= .0146 lb/d | all year |
| 001 | Hexachloroethane | DAILY AV | <= .011 lb/d | all year |
| 001 | Hexachloroethane | DAILY MX | <= .029 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY AV | <= .046 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY MX | <= .1 lb/d | all year |
| 001 | Methylene chloride | DAILY AV | <= .021 lb/d | all year |
| 001 | Methylene chloride | DAILY MX | <= .048 lb/d | all year |
| 001 | Nitrobenzene | DAILY AV | <= .014 lb/d | all year |
| 001 | Nitrobenzene | DAILY MX | <= .036 lb/d | all year |
| 001 | Phenanthrene | DAILY AV | <= .012 lb/d | all year |
| 001 | Phenanthrene | DAILY MX | <= .032 lb/d | all year |
| 001 | Pyrene | DAILY AV | <= .013 lb/d | all year |
| 001 | Pyrene | DAILY MX | <= .036 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY AV | <= .012 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY MX | <= .03 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY AV | <= .012 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY MX | <= .032 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY AV | <= .0085 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY MX | <= .013 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY AV | <= .011 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY MX | <= .029 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY AV | <= .011 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY MX | <= .029 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY AV | <= .0008 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY MX | <= .0017 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY AV | <= .041 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY MX | <= .087 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY AV | <= .082 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY MX | <= .12 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY AV | <= .011 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY MX | <= .029 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY AV | <= .036 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY MX | <= .075 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY AV | <= .017 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY MX | <= .023 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY AV | <= .008 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY MX | <= .015 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY AV | <= .017 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY MX | <= .052 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY AV | <= .022 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY MX | <= .037 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY AV | <= .021 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY MX | <= .06 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY AV | <= .0096 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY MX | <= .019 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY AV | <= .06 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY MX | <= .15 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY AV | <= .038 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY MX | <= .066 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY AV | <= .136 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY MX | <= .34 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY AV | <= .038 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY MX | <= .066 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY AV | <= .042 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY MX | <= .15 lb/d | all year |
| 001 | Phenol | DAILY AV | <= .008 lb/d | all year |
| 001 | Phenol | DAILY MX | <= .014 lb/d | all year |
| 001 | Naphthalene | DAILY AV | <= .012 lb/d | all year |
| 001 | Naphthalene | DAILY MX | <= .032 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY AV | <= .055 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY MX | <= .15 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY AV | <= .014 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY MX | <= .03 lb/d | all year |
| 001 | Vinyl chloride | DAILY AV | <= .056 lb/d | all year |
| 001 | Vinyl chloride | DAILY MX | <= .14 lb/d | all year |
| 001 | Trichloroethylene | DAILY AV | <= .011 lb/d | all year |
| 001 | Trichloroethylene | DAILY MX | <= .029 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY AV | <= .00002 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY MX | <= .00004 lb/d | all year |
| 001 | Phenols | DAILY AV | <= .08 lb/d | all year |
| 001 | Phenols | DAILY MX | <= .15 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= .2 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= .21 MGD | all year |
| 001 | Chlorine, total residual | MO MIN | >= 1 mg/L | all year |
| 001 | Chlorine, total residual | MO MAX | <= 4 mg/L | all year |
| 001 | E. coli | DAILY AV | <= 126 CFU/100mL | all year |
| 001 | E. coli | DAILY MX | <= 399 CFU/100mL | all year |
| 001 | 1,3-Dichloropropylene | DAILY AV | <= .015 lb/d | all year |
| 001 | 1,3-Dichloropropylene | DAILY MX | <= .023 lb/d | all year |
| 001 | 3,4-Benzofluoranthene | DAILY AV | <= .012 lb/d | all year |
| 001 | 3,4-Benzofluoranthene | DAILY MX | <= .033 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 16.7 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 33.4 lb/d | all year |
| 001 | Xylene [mix of m+o+p] | DAILY MX | <= 1.67 lb/d | all year |
| 001 | Chloroethane | DAILY AV | <= .056 lb/d | all year |
| 001 | Chloroethane | DAILY MX | <= .143 lb/d | all year |
| 002 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 200 mg/L | all year |
| 002 | pH | MINIMUM | >= 6 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 003 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 200 mg/L | all year |
| 003 | pH | MINIMUM | >= 6 SU | all year |
| 003 | pH | MAXIMUM | <= 9 SU | all year |
| 003 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 200 mg/L | all year |
| 004 | pH | MINIMUM | >= 6 SU | all year |
| 004 | pH | MAXIMUM | <= 9 SU | all year |
| 004 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
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