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Trecora Monomers LLC

Industrial Organic Chemicals, major discharger, Baton Rouge, Louisiana. NPDES permit LA0000833, in force until Feb 29, 2028. Last 12 months: over a limit 5 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (15 values), outfall 001 form DA quarterly (11 values), outfall 001 form PI quarterly (11 values), outfall 002 form Q quarterly (6 values), outfall 101 form A monthly (4 values), outfall 201 form A monthly (4 values), and 2 more forms
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 2 required values missing, 0 of 51 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
October 2025001BOD, 5-day, 20 deg. C, daily maximum2437.9 lb/d≤ 251 lb/d871%
October 2025001BOD, 5-day, 20 deg. C, monthly average503.1 lb/d≤ 94 lb/d435%
October 2025101Solids, total suspended, daily maximum9.2 lb/d≤ 6 lb/d53%
October 2025101Solids, total suspended, monthly average4.2 lb/d≤ 2 lb/d110%
December 2025101Solids, total suspended, monthly average2.5 lb/d≤ 2 lb/d25%

Limits in force (161)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 94 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 251 lb/dall year001
pHminimumreport only (SU)all year001
pHmaximumreport only (SU)all year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Carbon, tot organic [TOC]monthly average≤ 308 lb/dall year001
Carbon, tot organic [TOC]daily maximum≤ 823 lb/dall year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Carbon tetrachloridemonthly average≤ .02 lb/dall year001
Carbon tetrachloridedaily maximum≤ .04 lb/dall year001
1,2-Dichloroethanemonthly average≤ .07 lb/dall year001
1,2-Dichloroethanedaily maximum≤ .21 lb/dall year001
Chloroformmonthly average≤ .02 lb/dall year001
Chloroformdaily maximum≤ .05 lb/dall year001
Toluenemonthly average≤ .03 lb/dall year001
Toluenedaily maximum≤ .08 lb/dall year001
Benzenemonthly average≤ .04 lb/dall year001
Benzenedaily maximum≤ .14 lb/dall year001
Acenaphthylenemonthly average≤ .02 lb/dall year001
Acenaphthylenedaily maximum≤ .06 lb/dall year001
Acenaphthenemonthly average≤ .02 lb/dall year001
Acenaphthenedaily maximum≤ .06 lb/dall year001
Acrylonitrilemonthly average≤ .1 lb/dall year001
Acrylonitriledaily maximum≤ .24 lb/dall year001
Anthracenemonthly average≤ .02 lb/dall year001
Anthracenedaily maximum≤ .06 lb/dall year001
Benzo[b]fluoranthenemonthly average≤ .02 lb/dall year001
Benzo[b]fluoranthenedaily maximum≤ .06 lb/dall year001
Benzo[k]fluoranthenemonthly average≤ .02 lb/dall year001
Benzo[k]fluoranthenedaily maximum≤ .06 lb/dall year001
Benzo[a]pyrenemonthly average≤ .02 lb/dall year001
Benzo[a]pyrenedaily maximum≤ .06 lb/dall year001
Chlorobenzenemonthly average≤ .01 lb/dall year001
Chlorobenzenedaily maximum≤ .03 lb/dall year001
Chrysenemonthly average≤ .02 lb/dall year001
Chrysenedaily maximum≤ .06 lb/dall year001
Diethyl phthalatemonthly average≤ .08 lb/dall year001
Diethyl phthalatedaily maximum≤ .2 lb/dall year001
Dimethyl phthalatemonthly average≤ .02 lb/dall year001
Dimethyl phthalatedaily maximum≤ .05 lb/dall year001
Ethylbenzenemonthly average≤ .03 lb/dall year001
Ethylbenzenedaily maximum≤ .11 lb/dall year001
Fluoranthenemonthly average≤ .02 lb/dall year001
Fluoranthenedaily maximum≤ .07 lb/dall year001
Fluorenemonthly average≤ .02 lb/dall year001
Fluorenedaily maximum≤ .06 lb/dall year001
Hexachlorobutadienemonthly average≤ .0032 lb/dall year001
Hexachlorobutadienemonthly average≤ .0032 lb/dall year001
Hexachlorobutadienedaily maximum≤ .0076 lb/dall year001
Hexachlorobutadienedaily maximum≤ .0076 lb/dall year001
Hexachloroethanemonthly average≤ .02 lb/dall year001
Hexachloroethanedaily maximum≤ .05 lb/dall year001
Methyl chloride [Chloromethane]monthly average≤ .09 lb/dall year001
Methyl chloride [Chloromethane]daily maximum≤ .19 lb/dall year001
Methylene chloridemonthly average≤ .04 lb/dall year001
Methylene chloridedaily maximum≤ .09 lb/dall year001
Nitrobenzenemonthly average≤ .03 lb/dall year001
Nitrobenzenedaily maximum≤ .07 lb/dall year001
Phenanthrenemonthly average≤ .02 lb/dall year001
Phenanthrenedaily maximum≤ .06 lb/dall year001
Pyrenemonthly average≤ .02 lb/dall year001
Pyrenedaily maximum≤ .07 lb/dall year001
Tetrachloroethylenemonthly average≤ .02 lb/dall year001
Tetrachloroethylenedaily maximum≤ .06 lb/dall year001
1,1-Dichloroethanemonthly average≤ .02 lb/dall year001
1,1-Dichloroethanedaily maximum≤ .06 lb/dall year001
1,1-Dichloroethylenemonthly average≤ .02 lb/dall year001
1,1-Dichloroethylenedaily maximum≤ .02 lb/dall year001
1,1,1-Trichloroethanemonthly average≤ .02 lb/dall year001
1,1,1-Trichloroethanedaily maximum≤ .05 lb/dall year001
1,1,2-Trichloroethanemonthly average≤ .01 lb/dall year001
1,1,2-Trichloroethanedaily maximum≤ .03 lb/dall year001
Benzo[a]anthracenemonthly average≤ .02 lb/dall year001
Benzo[a]anthracenedaily maximum≤ .06 lb/dall year001
1,2-Dichlorobenzenemonthly average≤ .08 lb/dall year001
1,2-Dichlorobenzenedaily maximum≤ .16 lb/dall year001
1,2-Dichloropropanemonthly average≤ .15 lb/dall year001
1,2-Dichloropropanedaily maximum≤ .23 lb/dall year001
trans-1,2-Dichloroethylenemonthly average≤ .02 lb/dall year001
trans-1,2-Dichloroethylenedaily maximum≤ .05 lb/dall year001
1,3-Dichlorobenzenemonthly average≤ .03 lb/dall year001
1,3-Dichlorobenzenedaily maximum≤ .04 lb/dall year001
1,4-Dichlorobenzenemonthly average≤ .01 lb/dall year001
1,4-Dichlorobenzenedaily maximum≤ .03 lb/dall year001
2-Chlorophenolmonthly average≤ .03 lb/dall year001
2-Chlorophenoldaily maximum≤ .1 lb/dall year001
2-Nitrophenolmonthly average≤ .04 lb/dall year001
2-Nitrophenoldaily maximum≤ .07 lb/dall year001
2,4-Dichlorophenolmonthly average≤ .04 lb/dall year001
2,4-Dichlorophenoldaily maximum≤ .11 lb/dall year001
2,4-Dimethylphenolmonthly average≤ .02 lb/dall year001
2,4-Dimethylphenoldaily maximum≤ .04 lb/dall year001
2,4-Dinitrotoluenemonthly average≤ .11 lb/dall year001
2,4-Dinitrotoluenedaily maximum≤ .28 lb/dall year001
2,4-Dinitrophenolmonthly average≤ .07 lb/dall year001
2,4-Dinitrophenoldaily maximum≤ .12 lb/dall year001
2,6-Dinitrotoluenemonthly average≤ .25 lb/dall year001
2,6-Dinitrotoluenedaily maximum≤ .64 lb/dall year001
4-Nitrophenolmonthly average≤ .07 lb/dall year001
4-Nitrophenoldaily maximum≤ .12 lb/dall year001
4,6-Dinitro-o-cresolmonthly average≤ 0 lb/dall year001
4,6-Dinitro-o-cresoldaily maximum≤ .28 lb/dall year001
Phenolmonthly average≤ .01 lb/dall year001
Phenoldaily maximum≤ .03 lb/dall year001
Naphthalenemonthly average≤ .02 lb/dall year001
Naphthalenedaily maximum≤ .06 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .1 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .28 lb/dall year001
Di-n-butyl phthalatemonthly average≤ .03 lb/dall year001
Di-n-butyl phthalatedaily maximum≤ .06 lb/dall year001
Vinyl chloridemonthly average≤ .1 lb/dall year001
Vinyl chloridedaily maximum≤ .27 lb/dall year001
Trichloroethylenemonthly average≤ .02 lb/dall year001
Trichloroethylenedaily maximum≤ .05 lb/dall year001
Hexachlorobenzenemonthly average≤ .000007 lb/dall year001
Hexachlorobenzenemonthly average≤ .000007 lb/dall year001
Hexachlorobenzenedaily maximum≤ .000017 lb/dall year001
Hexachlorobenzenedaily maximum≤ .000017 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
1,3-Dichloropropylenemonthly average≤ .03 lb/dall year001
1,3-Dichloropropylenedaily maximum≤ .04 lb/dall year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
pH range excursions, > 60 minutesmonthly total≤ 0 occur/moall year001
pH range excursions, monthly total accummonthly total≤ 446 minall year001
Chloroethanemonthly average≤ .1 lb/dall year001
Chloroethanedaily maximum≤ .27 lb/dall year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute D. pulexmaximumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmaximumreport only (%)all year001
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Solids, total suspendedmonthly average≤ 2 lb/dall year101
Solids, total suspendeddaily maximum≤ 6 lb/dall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Solids, total suspendedmonthly average≤ 12 lb/dall year201
Solids, total suspendeddaily maximum≤ 37 lb/dall year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201

Cited limits by parameter: Louisiana's rules and the federal ones.

Same industry: the 130 Chemicals and Allied Products permits in Louisiana.

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Your permit document is the final word. As JSON: /api/v1/permits/LA0000833 · MCP: https://passage-data.com/mcp