EXXONMOBIL OIL CORPORATION

NPDES permit TX0068934 · Major NON-POTW · administratively continued, expires 2026-02-05 · 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.

This permit expired on 2026-02-05 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

5values over a limit
0required values missing, on 0 form(s)
0of 64 forms filed late

Last period with anything received: 2026-08-31. Most often over: E. coli (5).

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 (308)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 70 mg/L all year
001Sulfate, total [as SO4]DAILY MX <= 312 mg/L all year
001AcrylonitrileDAILY AV <= .0057 mg/L all year
001AcrylonitrileDAILY MX <= .0122 mg/L all year
001Benzo[a]pyreneDAILY AV <= .0000035 mg/L all year
001Benzo[a]pyreneDAILY MX <= .0000075 mg/L all year
001ChryseneDAILY AV <= .0035 mg/L all year
001ChryseneDAILY MX <= .0075 mg/L all year
001HexachlorobutadieneDAILY AV <= .00031 mg/L all year
001HexachlorobutadieneDAILY MX <= .00066 mg/L all year
001HexachloroethaneDAILY AV <= .0033 mg/L all year
001HexachloroethaneDAILY MX <= .00702 mg/L all year
001Benzo[a]anthraceneDAILY AV <= .000035 mg/L all year
001Benzo[a]anthraceneDAILY MX <= .000075 mg/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .01 mg/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .022 mg/L all year
001Vinyl chlorideDAILY AV <= .0235 mg/L all year
001Vinyl chlorideDAILY MX <= .0497 mg/L all year
001HexachlorobenzeneDAILY AV <= .00000096 mg/L all year
001HexachlorobenzeneDAILY MX <= .00000204 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .1 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 75 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
101BOD, 5-day, 20 deg. CDAILY AV report only all year
101BOD, 5-day, 20 deg. CDAILY MX report only all year
101Oxygen demand, chem. [high level] [COD]DAILY AV <= 836 lb/d all year
101Oxygen demand, chem. [high level] [COD]DAILY MX <= 1667 lb/d all year
101Solids, total suspendedDAILY AV <= 182 lb/d all year
101Solids, total suspendedDAILY MX <= 598 lb/d all year
101Oil & GreaseDAILY AV <= 50 lb/d all year
101Oil & GreaseDAILY MX <= 75 lb/d all year
101Zinc, total [as Zn]DAILY AV <= 1.25 lb/d all year
101Zinc, total [as Zn]DAILY MX <= 2.65 lb/d all year
101Carbon tetrachlorideDAILY AV <= .0452 lb/d all year
101Carbon tetrachlorideDAILY MX <= .0955 lb/d all year
1011,2-DichloroethaneDAILY AV <= .17 lb/d all year
1011,2-DichloroethaneDAILY MX <= .53 lb/d all year
101ChloroformDAILY AV <= .0527 lb/d all year
101ChloroformDAILY MX <= .115 lb/d all year
101TolueneDAILY AV <= .0653 lb/d all year
101TolueneDAILY MX <= .2 lb/d all year
101BenzeneDAILY AV <= .0929 lb/d all year
101BenzeneDAILY MX <= .341 lb/d all year
101AcenaphthyleneDAILY AV <= .0553 lb/d all year
101AcenaphthyleneDAILY MX <= .148 lb/d all year
101AcenaphtheneDAILY AV <= .0553 lb/d all year
101AcenaphtheneDAILY MX <= .148 lb/d all year
101AcrylonitrileDAILY AV <= .241 lb/d all year
101AcrylonitrileDAILY MX <= .607 lb/d all year
101AnthraceneDAILY AV <= .0553 lb/d all year
101AnthraceneDAILY MX <= .148 lb/d all year
101Benzo[b]fluorantheneDAILY AV <= .0578 lb/d all year
101Benzo[b]fluorantheneDAILY MX <= .153 lb/d all year
101Benzo[k]fluorantheneDAILY AV <= .0553 lb/d all year
101Benzo[k]fluorantheneDAILY MX <= .148 lb/d all year
101Benzo[a]pyreneDAILY AV <= .0578 lb/d all year
101Benzo[a]pyreneDAILY MX <= .153 lb/d all year
101ChlorobenzeneDAILY AV <= .0377 lb/d all year
101ChlorobenzeneDAILY MX <= .0703 lb/d all year
101ChryseneDAILY AV <= .0553 lb/d all year
101ChryseneDAILY MX <= .148 lb/d all year
101Diethyl phthalateDAILY AV <= .203 lb/d all year
101Diethyl phthalateDAILY MX <= .509 lb/d all year
101Dimethyl phthalateDAILY AV <= .0477 lb/d all year
101Dimethyl phthalateDAILY MX <= .118 lb/d all year
101EthylbenzeneDAILY AV <= .0804 lb/d all year
101EthylbenzeneDAILY MX <= .271 lb/d all year
101FluorantheneDAILY AV <= .0628 lb/d all year
101FluorantheneDAILY MX <= .17 lb/d all year
101FluoreneDAILY AV <= .0553 lb/d all year
101FluoreneDAILY MX <= .148 lb/d all year
101HexachlorobutadieneDAILY AV <= .0502 lb/d all year
101HexachlorobutadieneDAILY MX <= .123 lb/d all year
101HexachloroethaneDAILY AV <= .0527 lb/d all year
101HexachloroethaneDAILY MX <= .135 lb/d all year
101Methyl chloride [Chloromethane]DAILY AV <= .216 lb/d all year
101Methyl chloride [Chloromethane]DAILY MX <= .477 lb/d all year
101Methylene chlorideDAILY AV <= .1 lb/d all year
101Methylene chlorideDAILY MX <= .223 lb/d all year
101NitrobenzeneDAILY AV <= .0678 lb/d all year
101NitrobenzeneDAILY MX <= .17 lb/d all year
101PhenanthreneDAILY AV <= .0553 lb/d all year
101PhenanthreneDAILY MX <= .148 lb/d all year
101PyreneDAILY AV <= .0628 lb/d all year
101PyreneDAILY MX <= .168 lb/d all year
101TetrachloroethyleneDAILY AV <= .0553 lb/d all year
101TetrachloroethyleneDAILY MX <= .14 lb/d all year
1011,1-DichloroethaneDAILY AV <= .0553 lb/d all year
1011,1-DichloroethaneDAILY MX <= .148 lb/d all year
1011,1-DichloroethyleneDAILY AV <= .0402 lb/d all year
1011,1-DichloroethyleneDAILY MX <= .0628 lb/d all year
1011,1,1-TrichloroethaneDAILY AV <= .0527 lb/d all year
1011,1,1-TrichloroethaneDAILY MX <= .135 lb/d all year
1011,1,2-TrichloroethaneDAILY AV <= .0527 lb/d all year
1011,1,2-TrichloroethaneDAILY MX <= .135 lb/d all year
101Benzo[a]anthraceneDAILY AV <= .0553 lb/d all year
101Benzo[a]anthraceneDAILY MX <= .148 lb/d all year
1011,2-DichlorobenzeneDAILY AV <= .193 lb/d all year
1011,2-DichlorobenzeneDAILY MX <= .409 lb/d all year
1011,2-DichloropropaneDAILY AV <= .384 lb/d all year
1011,2-DichloropropaneDAILY MX <= .577 lb/d all year
101trans-1,2-DichloroethyleneDAILY AV <= .0527 lb/d all year
101trans-1,2-DichloroethyleneDAILY MX <= .135 lb/d all year
1011,2,4-TrichlorobenzeneDAILY AV <= .17 lb/d all year
1011,2,4-TrichlorobenzeneDAILY MX <= .351 lb/d all year
1011,3-DichlorobenzeneDAILY AV <= .0779 lb/d all year
1011,3-DichlorobenzeneDAILY MX <= .11 lb/d all year
1011,4-DichlorobenzeneDAILY AV <= .0377 lb/d all year
1011,4-DichlorobenzeneDAILY MX <= .0703 lb/d all year
1012-ChlorophenolDAILY AV <= .0779 lb/d all year
1012-ChlorophenolDAILY MX <= .246 lb/d all year
1012-NitrophenolDAILY AV <= .103 lb/d all year
1012-NitrophenolDAILY MX <= .173 lb/d all year
1012,4-DichlorophenolDAILY AV <= .098 lb/d all year
1012,4-DichlorophenolDAILY MX <= .281 lb/d all year
1012,4-DimethylphenolDAILY AV <= .0452 lb/d all year
1012,4-DimethylphenolDAILY MX <= .0904 lb/d all year
1012,4-DinitrotolueneDAILY AV <= .283 lb/d all year
1012,4-DinitrotolueneDAILY MX <= .715 lb/d all year
1012,4-DinitrophenolDAILY AV <= .178 lb/d all year
1012,4-DinitrophenolDAILY MX <= .309 lb/d all year
1012,6-DinitrotolueneDAILY AV <= .64 lb/d all year
1012,6-DinitrotolueneDAILY MX <= 1.61 lb/d all year
1014-NitrophenolDAILY AV <= .18 lb/d all year
1014-NitrophenolDAILY MX <= .311 lb/d all year
1014,6-Dinitro-o-cresolDAILY AV <= .195 lb/d all year
1014,6-Dinitro-o-cresolDAILY MX <= .695 lb/d all year
101PhenolDAILY AV <= .0377 lb/d all year
101PhenolDAILY MX <= .0653 lb/d all year
101NaphthaleneDAILY AV <= .0553 lb/d all year
101NaphthaleneDAILY MX <= .148 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .258 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .7 lb/d all year
101Di-n-butyl phthalateDAILY AV <= .0678 lb/d all year
101Di-n-butyl phthalateDAILY MX <= .143 lb/d all year
101Vinyl chlorideDAILY AV <= .261 lb/d all year
101Vinyl chlorideDAILY MX <= .673 lb/d all year
101TrichloroethyleneDAILY AV <= .0527 lb/d all year
101TrichloroethyleneDAILY MX <= .135 lb/d all year
101HexachlorobenzeneDAILY AV <= .0377 lb/d all year
101HexachlorobenzeneDAILY MX <= .0703 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= 1 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= 1.5 MGD all year
101E. coliDAILY AV <= 126 MPN/100mL all year
101E. coliDAILY MX <= 399 MPN/100mL all year
1011,3-DichloropropyleneDAILY AV <= .0728 lb/d all year
1011,3-DichloropropyleneDAILY MX <= .11 lb/d all year
101ChloroethaneDAILY AV <= .261 lb/d all year
101ChloroethaneDAILY MX <= .673 lb/d all year
201BOD, 5-day, 20 deg. CDAILY AV report only all year
201BOD, 5-day, 20 deg. CDAILY MX report only all year
201Oxygen demand, chem. [high level] [COD]DAILY AV <= 751 lb/d all year
201Oxygen demand, chem. [high level] [COD]DAILY MX <= 1502 lb/d all year
201Solids, total suspendedDAILY AV <= 253 lb/d all year
201Solids, total suspendedDAILY MX <= 835 lb/d all year
201Oil & GreaseDAILY AV <= 75 lb/d all year
201Oil & GreaseDAILY MX <= 112 lb/d all year
201Carbon tetrachlorideDAILY AV <= .0505 lb/d all year
201Carbon tetrachlorideDAILY MX <= .106 lb/d all year
2011,2-DichloroethaneDAILY AV <= .19 lb/d all year
2011,2-DichloroethaneDAILY MX <= .591 lb/d all year
201ChloroformDAILY AV <= .0589 lb/d all year
201ChloroformDAILY MX <= .129 lb/d all year
201TolueneDAILY AV <= .0729 lb/d all year
201TolueneDAILY MX <= .224 lb/d all year
201BenzeneDAILY AV <= .103 lb/d all year
201BenzeneDAILY MX <= .381 lb/d all year
201AcenaphthyleneDAILY AV <= .0617 lb/d all year
201AcenaphthyleneDAILY MX <= .165 lb/d all year
201AcenaphtheneDAILY AV <= .0617 lb/d all year
201AcenaphtheneDAILY MX <= .165 lb/d all year
201AcrylonitrileDAILY AV <= .269 lb/d all year
201AcrylonitrileDAILY MX <= .678 lb/d all year
201AnthraceneDAILY AV <= .0617 lb/d all year
201AnthraceneDAILY MX <= .165 lb/d all year
201Benzo[b]fluorantheneDAILY AV <= .0645 lb/d all year
201Benzo[b]fluorantheneDAILY MX <= .171 lb/d all year
201Benzo[k]fluorantheneDAILY AV <= .0617 lb/d all year
201Benzo[k]fluorantheneDAILY MX <= .165 lb/d all year
201Benzo[a]pyreneDAILY AV <= .0645 lb/d all year
201Benzo[a]pyreneDAILY MX <= .171 lb/d all year
201ChlorobenzeneDAILY AV <= .0421 lb/d all year
201ChlorobenzeneDAILY MX <= .0785 lb/d all year
201ChryseneDAILY AV <= .0617 lb/d all year
201ChryseneDAILY MX <= .165 lb/d all year
201Diethyl phthalateDAILY AV <= .227 lb/d all year
201Diethyl phthalateDAILY MX <= .569 lb/d all year
201Dimethyl phthalateDAILY AV <= .0533 lb/d all year
201Dimethyl phthalateDAILY MX <= .131 lb/d all year
201EthylbenzeneDAILY AV <= .0897 lb/d all year
201EthylbenzeneDAILY MX <= .302 lb/d all year
201FluorantheneDAILY AV <= .0701 lb/d all year
201FluorantheneDAILY MX <= .19 lb/d all year
201FluoreneDAILY AV <= .0617 lb/d all year
201FluoreneDAILY MX <= .165 lb/d all year
201HexachlorobutadieneDAILY AV <= .0561 lb/d all year
201HexachlorobutadieneDAILY MX <= .137 lb/d all year
201HexachloroethaneDAILY AV <= .0589 lb/d all year
201HexachloroethaneDAILY MX <= .151 lb/d all year
201Methyl chloride [Chloromethane]DAILY AV <= .241 lb/d all year
201Methyl chloride [Chloromethane]DAILY MX <= .532 lb/d all year
201Methylene chlorideDAILY AV <= .112 lb/d all year
201Methylene chlorideDAILY MX <= .249 lb/d all year
201NitrobenzeneDAILY AV <= .0757 lb/d all year
201NitrobenzeneDAILY MX <= .19 lb/d all year
201PhenanthreneDAILY AV <= .0617 lb/d all year
201PhenanthreneDAILY MX <= .165 lb/d all year
201PyreneDAILY AV <= .0701 lb/d all year
201PyreneDAILY MX <= .187 lb/d all year
201TetrachloroethyleneDAILY AV <= .0617 lb/d all year
201TetrachloroethyleneDAILY MX <= .157 lb/d all year
2011,1-DichloroethaneDAILY AV <= .0617 lb/d all year
2011,1-DichloroethaneDAILY MX <= .165 lb/d all year
2011,1-DichloroethyleneDAILY AV <= .0449 lb/d all year
2011,1-DichloroethyleneDAILY MX <= .0701 lb/d all year
2011,1,1-TrichloroethaneDAILY AV <= .0589 lb/d all year
2011,1,1-TrichloroethaneDAILY MX <= .151 lb/d all year
2011,1,2-TrichloroethaneDAILY AV <= .0589 lb/d all year
2011,1,2-TrichloroethaneDAILY MX <= .151 lb/d all year
201Benzo[a]anthraceneDAILY AV <= .0617 lb/d all year
201Benzo[a]anthraceneDAILY MX <= .165 lb/d all year
2011,2-DichlorobenzeneDAILY AV <= .215 lb/d all year
2011,2-DichlorobenzeneDAILY MX <= .457 lb/d all year
2011,2-DichloropropaneDAILY AV <= .429 lb/d all year
2011,2-DichloropropaneDAILY MX <= .644 lb/d all year
201trans-1,2-DichloroethyleneDAILY AV <= .0589 lb/d all year
201trans-1,2-DichloroethyleneDAILY MX <= .151 lb/d all year
2011,2,4-TrichlorobenzeneDAILY AV <= .19 lb/d all year
2011,2,4-TrichlorobenzeneDAILY MX <= .392 lb/d all year
2011,3-DichlorobenzeneDAILY AV <= .0869 lb/d all year
2011,3-DichlorobenzeneDAILY MX <= .123 lb/d all year
2011,4-DichlorobenzeneDAILY AV <= .0421 lb/d all year
2011,4-DichlorobenzeneDAILY MX <= .0785 lb/d all year
2012-ChlorophenolDAILY AV <= .0869 lb/d all year
2012-ChlorophenolDAILY MX <= .274 lb/d all year
2012-NitrophenolDAILY AV <= .115 lb/d all year
2012-NitrophenolDAILY MX <= .193 lb/d all year
2012,4-DichlorophenolDAILY AV <= .109 lb/d all year
2012,4-DichlorophenolDAILY MX <= .314 lb/d all year
2012,4-DimethylphenolDAILY AV <= .0505 lb/d all year
2012,4-DimethylphenolDAILY MX <= .1 lb/d all year
2012,4-DinitrotolueneDAILY AV <= .316 lb/d all year
2012,4-DinitrotolueneDAILY MX <= .799 lb/d all year
2012,4-DinitrophenolDAILY AV <= .199 lb/d all year
2012,4-DinitrophenolDAILY MX <= .344 lb/d all year
2012,6-DinitrotolueneDAILY AV <= .715 lb/d all year
2012,6-DinitrotolueneDAILY MX <= 1.79 lb/d all year
2014-NitrophenolDAILY AV <= .201 lb/d all year
2014-NitrophenolDAILY MX <= .347 lb/d all year
2014,6-Dinitro-o-cresolDAILY AV <= .218 lb/d all year
2014,6-Dinitro-o-cresolDAILY MX <= .776 lb/d all year
201PhenolDAILY AV <= .042 lb/d all year
201PhenolDAILY MX <= .0729 lb/d all year
201NaphthaleneDAILY AV <= .0617 lb/d all year
201NaphthaleneDAILY MX <= .165 lb/d all year
201Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .288 lb/d all year
201Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .782 lb/d all year
201Di-n-butyl phthalateDAILY AV <= .0757 lb/d all year
201Di-n-butyl phthalateDAILY MX <= .159 lb/d all year
201Vinyl chlorideDAILY AV <= .291 lb/d all year
201Vinyl chlorideDAILY MX <= .751 lb/d all year
201TrichloroethyleneDAILY AV <= .0589 lb/d all year
201TrichloroethyleneDAILY MX <= .151 lb/d all year
201HexachlorobenzeneDAILY AV <= .0421 lb/d all year
201HexachlorobenzeneDAILY MX <= .0785 lb/d all year
201Flow, in conduit or thru treatment plantDAILY AV <= .9 MGD all year
201Flow, in conduit or thru treatment plantDAILY MX <= 1.6 MGD all year
2011,3-DichloropropyleneDAILY AV <= .0813 lb/d all year
2011,3-DichloropropyleneDAILY MX <= .123 lb/d all year
201ChloroethaneDAILY AV <= .291 lb/d all year
201ChloroethaneDAILY MX <= .751 lb/d all year
301BOD, 5-day, 20 deg. CDAILY AV <= 77 lb/d all year
301BOD, 5-day, 20 deg. CDAILY MX <= 188 lb/d 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] - C. dubia7 DA MIN >= 80 % all year
TX1Whole Effluent Toxicity [WET] - C. dubiaMO AV MN >= 80 % all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO 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 D. PulexSINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP 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