Ethyl Corp - Baton Rouge Plant

NPDES permit LA0004090 · Major NON-POTW · effective, expires 2031-03-31 · 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)
10of 34 forms filed late

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

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (76)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 120 mg/L all year
001pHINST MIN report only all year
001pHINST MAX report only all year
001Solids, total suspendedMO AVG <= 57 mg/L all year
001Solids, total suspendedDAILY MX <= 183 mg/L all year
001Lead, total [as Pb]MO AVG <= .32 mg/L all year
001Lead, total [as Pb]MO AVG <= .32 mg/L all year
001Lead, total [as Pb]DAILY MX <= .69 mg/L all year
001Lead, total [as Pb]DAILY MX <= .69 mg/L all year
001Whole effluent toxicity - retest #148HR MIN report only all year
001Whole effluent toxicity - retest #148HR MIN report only 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 #248HR MIN report only all year
001Whole effluent toxicity - retest #248HR 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
0011,2-DichloroethaneMO AVG <= .18 mg/L all year
0011,2-DichloroethaneDAILY MX <= .574 mg/L all year
001TolueneMO AVG <= .028 mg/L all year
001TolueneDAILY MX <= .074 mg/L all year
001BenzeneMO AVG <= .057 mg/L all year
001BenzeneDAILY MX <= .134 mg/L all year
001ChlorobenzeneMO AVG <= .142 mg/L all year
001ChlorobenzeneDAILY MX <= .38 mg/L all year
001EthylbenzeneMO AVG <= .142 mg/L all year
001EthylbenzeneDAILY MX <= .38 mg/L all year
001Methylene chlorideMO AVG <= .036 mg/L all year
001Methylene chlorideDAILY MX <= .17 mg/L all year
001TetrachloroethyleneMO AVG <= .052 mg/L all year
001TetrachloroethyleneDAILY MX <= .164 mg/L all year
0011,1-DichloroethaneMO AVG <= .022 mg/L all year
0011,1-DichloroethaneDAILY MX <= .059 mg/L all year
0011,1,2-TrichloroethaneMO AVG <= .032 mg/L all year
0011,1,2-TrichloroethaneDAILY MX <= .127 mg/L all year
001TrichloroethyleneMO AVG <= .026 mg/L all year
001TrichloroethyleneDAILY MX <= .069 mg/L 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
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN 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
001Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
001Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
001LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
001LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
001NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
001NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
001NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
001NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
001Coef Of Var Static Renewal 48Hr Acute D. pulexMAXIMUM report only all year
001Coef Of Var Static Renewal 48Hr Acute Pimephales promelasMAXIMUM report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
002Lead, total [as Pb]DAILY MX <= .69 mg/L all year
0021,2-DichloroethaneDAILY MX <= .574 mg/L all year
002Methylene chlorideDAILY MX <= .17 mg/L all year
0021,1-DichloroethaneDAILY MX <= .059 mg/L all year
0021,1,1-TrichloroethaneDAILY MX <= .059 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX 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
003Lead, total [as Pb]MO AVG report only all year
003Lead, total [as Pb]DAILY MX report only all year
003Aluminum, total [as Al]MO AVG report only all year
003Aluminum, total [as Al]DAILY MX report only 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