OCCIDENTAL CHEMIAL CORPORATION

NPDES permit TX0104876 · Major NON-POTW · administratively continued, expires 2026-06-02 · 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 2026-06-02 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

0values over a limit
0required values missing, on 0 form(s)
0of 39 forms filed late

Last period with anything received: 2026-07-31.

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 (175)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 110 deg F all year
001BOD, 5-day, 20 deg. CDAILY AV <= 407 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1021 lb/d all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Solids, total suspendedDAILY AV <= 672 lb/d all year
001Solids, total suspendedDAILY MX <= 2195 lb/d all year
001Copper, total [as Cu]DAILY AV <= 2.03 lb/d all year
001Copper, total [as Cu]DAILY MX <= 4.31 lb/d all year
001Carbon tetrachlorideDAILY AV <= .19 lb/d all year
001Carbon tetrachlorideDAILY MX <= .39 lb/d all year
0011,2-DichloroethaneDAILY AV <= .7 lb/d all year
0011,2-DichloroethaneDAILY MX <= 2.17 lb/d all year
001ChloroformDAILY AV <= .36 lb/d all year
001ChloroformDAILY MX <= .78 lb/d all year
001TolueneDAILY AV <= .27 lb/d all year
001TolueneDAILY MX <= .82 lb/d all year
001BenzeneDAILY AV <= .38 lb/d all year
001BenzeneDAILY MX <= 1.4 lb/d all year
001AcenaphthyleneDAILY AV <= .23 lb/d all year
001AcenaphthyleneDAILY MX <= .61 lb/d all year
001AcenaphtheneDAILY AV <= .23 lb/d all year
001AcenaphtheneDAILY MX <= .61 lb/d all year
001AcrylonitrileDAILY AV <= .99 lb/d all year
001AcrylonitrileDAILY MX <= 2.49 lb/d all year
001AnthraceneDAILY AV <= .23 lb/d all year
001AnthraceneDAILY MX <= .61 lb/d all year
001Benzo[b]fluorantheneDAILY AV <= .24 lb/d all year
001Benzo[b]fluorantheneDAILY MX <= .63 lb/d all year
001Benzo[k]fluorantheneDAILY AV <= .23 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= .61 lb/d all year
001Benzo[a]pyreneDAILY AV <= .003 lb/d all year
001Benzo[a]pyreneDAILY MX <= .006 lb/d all year
001ChlorobenzeneDAILY AV <= .15 lb/d all year
001ChlorobenzeneDAILY MX <= .29 lb/d all year
001ChryseneDAILY AV <= .23 lb/d all year
001ChryseneDAILY MX <= .61 lb/d all year
001Diethyl phthalateDAILY AV <= .83 lb/d all year
001Diethyl phthalateDAILY MX <= 2.09 lb/d all year
001Dimethyl phthalateDAILY AV <= .2 lb/d all year
001Dimethyl phthalateDAILY MX <= .48 lb/d all year
001EthylbenzeneDAILY AV <= .33 lb/d all year
001EthylbenzeneDAILY MX <= 1.11 lb/d all year
001FluorantheneDAILY AV <= .26 lb/d all year
001FluorantheneDAILY MX <= .7 lb/d all year
001FluoreneDAILY AV <= .23 lb/d all year
001FluoreneDAILY MX <= .61 lb/d all year
001HexachlorobutadieneDAILY AV <= .21 lb/d all year
001HexachlorobutadieneDAILY MX <= .5 lb/d all year
001HexachloroethaneDAILY AV <= .22 lb/d all year
001HexachloroethaneDAILY MX <= .56 lb/d all year
001Methyl chloride [Chloromethane]DAILY AV <= .88 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 1.95 lb/d all year
001Methylene chlorideDAILY AV <= .41 lb/d all year
001Methylene chlorideDAILY MX <= .92 lb/d all year
001NitrobenzeneDAILY AV <= .28 lb/d all year
001NitrobenzeneDAILY MX <= .7 lb/d all year
001PhenanthreneDAILY AV <= .23 lb/d all year
001PhenanthreneDAILY MX <= .61 lb/d all year
001PyreneDAILY AV <= .26 lb/d all year
001PyreneDAILY MX <= .69 lb/d all year
001TetrachloroethyleneDAILY AV <= .23 lb/d all year
001TetrachloroethyleneDAILY MX <= .58 lb/d all year
0011,1-DichloroethaneDAILY AV <= .23 lb/d all year
0011,1-DichloroethaneDAILY MX <= .61 lb/d all year
0011,1-DichloroethyleneDAILY AV <= .16 lb/d all year
0011,1-DichloroethyleneDAILY MX <= .26 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= .22 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= .56 lb/d all year
0011,1,2-TrichloroethaneDAILY AV <= .22 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= .56 lb/d all year
001Benzo[a]anthraceneDAILY AV <= .026 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .056 lb/d all year
0011,2-DichlorobenzeneDAILY AV <= .79 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= 1.68 lb/d all year
0011,2-DichloropropaneDAILY AV <= 1.57 lb/d all year
0011,2-DichloropropaneDAILY MX <= 2.36 lb/d all year
001trans-1,2-DichloroethyleneDAILY AV <= .22 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= .56 lb/d all year
0011,2,4-TrichlorobenzeneDAILY AV <= .7 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= 1.44 lb/d all year
0011,3-DichlorobenzeneDAILY AV <= .32 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= .45 lb/d all year
0011,4-DichlorobenzeneDAILY AV <= .15 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= .29 lb/d all year
0012-ChlorophenolDAILY AV <= .32 lb/d all year
0012-ChlorophenolDAILY MX <= 1.01 lb/d all year
0012-NitrophenolDAILY AV <= .42 lb/d all year
0012-NitrophenolDAILY MX <= .71 lb/d all year
0012,4-DichlorophenolDAILY AV <= .4 lb/d all year
0012,4-DichlorophenolDAILY MX <= 1.15 lb/d all year
0012,4-DimethylphenolDAILY AV <= .19 lb/d all year
0012,4-DimethylphenolDAILY MX <= .37 lb/d all year
0012,4-DinitrotolueneDAILY AV <= 1.16 lb/d all year
0012,4-DinitrotolueneDAILY MX <= 2.93 lb/d all year
0012,4-DinitrophenolDAILY AV <= .73 lb/d all year
0012,4-DinitrophenolDAILY MX <= 1.26 lb/d all year
0012,6-DinitrotolueneDAILY AV <= 2.62 lb/d all year
0012,6-DinitrotolueneDAILY MX <= 6.59 lb/d all year
0014-NitrophenolDAILY AV <= .74 lb/d all year
0014-NitrophenolDAILY MX <= 1.27 lb/d all year
0014,6-Dinitro-o-cresolDAILY AV <= .8 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= 2.85 lb/d all year
001PhenolDAILY AV <= .15 lb/d all year
001PhenolDAILY MX <= .27 lb/d all year
001NaphthaleneDAILY AV <= .23 lb/d all year
001NaphthaleneDAILY MX <= .61 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= 1.06 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 2.87 lb/d all year
001Di-n-butyl phthalateDAILY AV <= .28 lb/d all year
001Di-n-butyl phthalateDAILY MX <= .59 lb/d all year
001Vinyl chlorideDAILY AV <= 1.07 lb/d all year
001Vinyl chlorideDAILY MX <= 2.76 lb/d all year
001TrichloroethyleneDAILY AV <= .22 lb/d all year
001TrichloroethyleneDAILY MX <= .56 lb/d all year
001HexachlorobenzeneDAILY AV <= .0007 lb/d all year
001HexachlorobenzeneDAILY MX <= .0015 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 2.79 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 3.8 MGD all year
0011,3-DichloropropyleneDAILY AV <= .3 lb/d all year
0011,3-DichloropropyleneDAILY MX <= .45 lb/d all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001ChloroethaneDAILY AV <= 1.07 lb/d all year
001ChloroethaneDAILY MX <= 2.76 lb/d all year
102BOD, 5-day, 20 deg. CDAILY MX <= 65 mg/L all year
102Solids, total suspendedDAILY MX <= 65 mg/L all year
102Flow, in conduit or thru treatment plantDAILY AV report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
102Chlorine, total residualMO MIN >= 1 mg/L all year
102EnterococciDAILY AV <= 35 CFU/100mL all year
102EnterococciDAILY MX <= 104 CFU/100mL all year
202BOD, 5-day, 20 deg. CDAILY MX <= 65 mg/L all year
202Solids, total suspendedDAILY MX <= 65 mg/L all year
202Flow, in conduit or thru treatment plantDAILY AV report only all year
202Flow, in conduit or thru treatment plantDAILY MX report only all year
202Chlorine, total residualMO MIN >= 1 mg/L all year
202EnterococciDAILY AV <= 35 CFU/100mL all year
202EnterococciDAILY MX <= 104 CFU/100mL all year
TX1Whole effluent toxicity - retest #17 DA MIN 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 #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN 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 - retest #2MO AV MN report only 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 menidia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO 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 menidia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO 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 menidia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO 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 menidia7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO 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 menidia7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiaMO 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 Reproduction Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiaMO 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 menidiaSINGSAMP 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