Occidental Chemical Corporation

NPDES permit LA0005983 · Major NON-POTW · effective, expires 2027-12-14 · 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 99 forms filed late

Last period with anything received: 2026-08-31.

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 (79)

OutfallParameterStatisticLimitMonths
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG <= 1895 lb/d all year
001Solids, total suspendedDAILY MX <= 4064 lb/d all year
001Oil & GreaseMO AVG <= 202 lb/d all year
001Oil & GreaseDAILY MX <= 303 lb/d all year
001Copper, total [as Cu]MO AVG <= 15.75 lb/d all year
001Copper, total [as Cu]DAILY MX <= 38.58 lb/d all year
001Lead, total [as Pb]MO AVG <= 7.72 lb/d all year
001Lead, total [as Pb]DAILY MX <= 18.97 lb/d all year
001Nickel, total [as Ni]MO AVG <= 11.9 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 31.19 lb/d 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 #148HR MIN 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 #2MO AV MN 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
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= 25.4 lb/d all year
001Chlorine, total residualDAILY MX <= 41.8 lb/d 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 #348HR MIN 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
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
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
004Chloride [as Cl]MO AVG report only all year
004Chloride [as Cl]DAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
1011,2-DichloroethaneDAILY MX <= 574 ug/L all year
101ChloroformDAILY MX <= 325 ug/L all year
1011,1,2,2-TetrachloroethaneDAILY MX <= 574 ug/L all year
101TrichloroethyleneDAILY MX <= 69 ug/L all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
201BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
201BOD, 5-day, 20 deg. CDAILY MX <= 65 mg/L all year
201Solids, total suspendedMO AVG <= 90 mg/L all year
201Solids, total suspendedDAILY MX <= 135 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
201Coliform, fecal generalMO AVG <= 200 #/100mL all year
201Coliform, fecal generalDAILY MX <= 400 #/100mL all year
CT01Cycles Of ConcentrationMO AV MN >= 3 c all year
CT02Cycles Of ConcentrationMO AV MN >= 3 c all year
CT03Cycles Of ConcentrationMO AV MN >= 3 c 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