Exxon Mobil Corporation - Baton Rouge Polyolefins Plant

NPDES permit LA0005479 · Major NON-POTW · effective, expires 2031-04-30 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 34 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (176)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 505 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1331 lb/d all year
001pHINST MIN report only all year
001pHINST MAX report only all year
001Solids, total suspendedMO AVG <= 1124 lb/d all year
001Solids, total suspendedDAILY MX <= 3632 lb/d all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
001Chromium, hexavalent [as Cr]MO AVG report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]MO AVG <= 14.67 lb/d all year
001Chromium, total [as Cr]MO AVG <= 14.67 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 36.6 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 36.6 lb/d all year
001Zinc, total [as Zn]MO AVG <= 13.87 lb/d all year
001Zinc, total [as Zn]MO AVG <= 13.87 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 34.49 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 34.49 lb/d all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #17 DA MIN report only all year
001Whole effluent toxicity - retest #17 DA MIN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #27 DA MIN report only all year
001Whole effluent toxicity - retest #27 DA MIN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #2MO AV MN report only all year
001WET, sublethal retest #2MO AV MN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001Carbon tetrachlorideMO AVG <= .23 lb/d all year
001Carbon tetrachlorideDAILY MX <= .56 lb/d all year
0011,2-DichloroethaneMO AVG <= 1.33 lb/d all year
0011,2-DichloroethaneDAILY MX <= 3.16 lb/d all year
001ChloroformMO AVG <= 1.47 lb/d all year
001ChloroformDAILY MX <= 4.29 lb/d all year
001TolueneMO AVG <= .37 lb/d all year
001TolueneDAILY MX <= .98 lb/d all year
001BenzeneMO AVG <= .75 lb/d all year
001BenzeneDAILY MX <= 1.77 lb/d all year
001AcenaphthyleneMO AVG <= .25 lb/d all year
001AcenaphthyleneDAILY MX <= .62 lb/d all year
001AcenaphtheneMO AVG <= .25 lb/d all year
001AcenaphtheneDAILY MX <= .62 lb/d all year
001AcrylonitrileA1 <= 1.24 lb/d all year
001AcrylonitrileM6 <= 3.07 lb/d all year
001AnthraceneMO AVG <= .25 lb/d all year
001AnthraceneDAILY MX <= .62 lb/d all year
001Benzo[b]fluorantheneMO AVG <= .26 lb/d all year
001Benzo[b]fluorantheneDAILY MX <= .63 lb/d all year
001Benzo[k]fluorantheneMO AVG <= .25 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= .62 lb/d all year
001Benzo[a]pyreneMO AVG <= .26 lb/d all year
001Benzo[a]pyreneDAILY MX <= .63 lb/d all year
001ChlorobenzeneMO AVG <= 1.88 lb/d all year
001ChlorobenzeneDAILY MX <= 5.02 lb/d all year
001ChryseneMO AVG <= .25 lb/d all year
001ChryseneDAILY MX <= .62 lb/d all year
001Diethyl phthalateMO AVG <= .61 lb/d all year
001Diethyl phthalateDAILY MX <= 1.49 lb/d all year
001Dimethyl phthalateMO AVG <= .25 lb/d all year
001Dimethyl phthalateDAILY MX <= .62 lb/d all year
001EthylbenzeneMO AVG <= 1.88 lb/d all year
001EthylbenzeneDAILY MX <= 5.02 lb/d all year
001FluorantheneMO AVG <= .29 lb/d all year
001FluorantheneDAILY MX <= .71 lb/d all year
001FluoreneMO AVG <= .25 lb/d all year
001FluoreneDAILY MX <= .62 lb/d all year
001HexachlorobutadieneMO AVG <= .02 lb/d all year
001HexachlorobutadieneDAILY MX <= .05 lb/d all year
001HexachloroethaneMO AVG <= 2.59 lb/d all year
001HexachloroethaneDAILY MX <= 10.49 lb/d all year
001Methyl chloride [Chloromethane]MO AVG <= 1.45 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 3.9 lb/d all year
001Methylene chlorideMO AVG <= .48 lb/d all year
001Methylene chlorideDAILY MX <= 2.25 lb/d all year
001NitrobenzeneMO AVG <= 29.56 lb/d all year
001NitrobenzeneDAILY MX <= 84.59 lb/d all year
001PhenanthreneMO AVG <= .25 lb/d all year
001PhenanthreneDAILY MX <= .62 lb/d all year
001PyreneMO AVG <= .26 lb/d all year
001PyreneDAILY MX <= .63 lb/d all year
001TetrachloroethyleneMO AVG <= .49 lb/d all year
001TetrachloroethyleneDAILY MX <= 1.16 lb/d all year
0011,1-DichloroethaneMO AVG <= .29 lb/d all year
0011,1-DichloroethaneDAILY MX <= .78 lb/d all year
0011,1-DichloroethyleneMO AVG <= .11 lb/d all year
0011,1-DichloroethyleneDAILY MX <= .27 lb/d all year
0011,1,1-TrichloroethaneMO AVG <= .29 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= .78 lb/d all year
0011,1,2-TrichloroethaneMO AVG <= .42 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= 1.68 lb/d all year
001Benzo[a]anthraceneMO AVG <= .25 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .62 lb/d all year
0011,2-DichlorobenzeneMO AVG <= 2.59 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= 10.49 lb/d all year
0011,2-DichloropropaneMO AVG <= 2.59 lb/d all year
0011,2-DichloropropaneDAILY MX <= 10.49 lb/d all year
001trans-1,2-DichloroethyleneMO AVG <= .33 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= .87 lb/d all year
0011,2,4-TrichlorobenzeneMO AVG <= 2.59 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= 10.49 lb/d all year
0011,3-DichlorobenzeneMO AVG <= 1.88 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= 5.02 lb/d all year
0011,4-DichlorobenzeneMO AVG <= 1.88 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= 5.02 lb/d all year
0012-NitrophenolMO AVG <= .86 lb/d all year
0012-NitrophenolDAILY MX <= 3.05 lb/d all year
0012,4-DimethylphenolMO AVG <= .25 lb/d all year
0012,4-DimethylphenolDAILY MX <= .62 lb/d all year
0012,4-DinitrophenolMO AVG <= 15.95 lb/d all year
0012,4-DinitrophenolDAILY MX <= 56.7 lb/d all year
0014-NitrophenolMO AVG <= 2.14 lb/d all year
0014-NitrophenolDAILY MX <= 7.61 lb/d all year
0014,6-Dinitro-o-cresolMO AVG <= 1.03 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= 3.66 lb/d all year
001PhenolMO AVG <= .25 lb/d all year
001PhenolDAILY MX <= .62 lb/d all year
001NaphthaleneMO AVG <= .25 lb/d all year
001NaphthaleneDAILY MX <= .62 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 1.26 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 3.41 lb/d all year
001Di-n-butyl phthalateMO AVG <= .26 lb/d all year
001Di-n-butyl phthalateDAILY MX <= .57 lb/d all year
001Vinyl chlorideMO AVG <= .09 lb/d all year
001Vinyl chlorideDAILY MX <= .21 lb/d all year
001TrichloroethyleneMO AVG <= .34 lb/d all year
001TrichloroethyleneDAILY MX <= .91 lb/d all year
001HexachlorobenzeneMO AVG <= .00005 lb/d all year
001HexachlorobenzeneDAILY MX <= .00012 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
0011,3-DichloropropyleneMO AVG <= 1.08 lb/d all year
0011,3-DichloropropyleneDAILY MX <= 2.56 lb/d all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #37 DA MIN report only all year
001Whole Effluent Toxicity - Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001ChloroethaneMO AVG <= 1.45 lb/d all year
001ChloroethaneDAILY MX <= 3.9 lb/d all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic Pimephales promelasMAXIMUM report only all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX 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