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W.R. Grace & Co.-Conn.

Chemical Preparations, major discharger, Baton Rouge, Louisiana. NPDES permit LA0113531, in force until Feb 28, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (12 values), outfall 001 form DA quarterly (11 values), outfall 001 form PI quarterly (11 values), outfall 001 form Q quarterly (92 values), outfall 101 form Q quarterly (4 values), outfall 001 form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 4 required values missing, 0 of 29 reports late

Limits in force (146)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 187 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 486 lb/dall year001
pHminimumreport only (SU)all year001
pHmaximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 241 lb/dall year001
Solids, total suspendeddaily maximum≤ 773 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Carbon, tot organic [TOC]monthly average≤ 216 lb/dall year001
Carbon, tot organic [TOC]daily maximum≤ 464 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≤ .45 lb/dall year001
Carbon tetrachloridedaily maximum≤ 1.2 lb/dall year001
1,2-Dichloroethanemonthly average≤ .57 lb/dall year001
1,2-Dichloroethanedaily maximum≤ 1.82 lb/dall year001
Chloroformmonthly average≤ .35 lb/dall year001
Chloroformdaily maximum≤ 1.03 lb/dall year001
Toluenemonthly average≤ .09 lb/dall year001
Toluenedaily maximum≤ .23 lb/dall year001
Benzenemonthly average≤ .18 lb/dall year001
Benzenedaily maximum≤ .42 lb/dall year001
Acenaphthylenemonthly average≤ .06 lb/dall year001
Acenaphthylenedaily maximum≤ .15 lb/dall year001
Acenaphthenemonthly average≤ .06 lb/dall year001
Acenaphthenedaily maximum≤ .15 lb/dall year001
Acrylonitrilemonthly average≤ .3 lb/dall year001
Acrylonitriledaily maximum≤ .74 lb/dall year001
Anthracenemonthly average≤ .06 lb/dall year001
Anthracenedaily maximum≤ .15 lb/dall year001
Benzo[b]fluoranthenemonthly average≤ .06 lb/dall year001
Benzo[b]fluoranthenedaily maximum≤ .15 lb/dall year001
Benzo[k]fluoranthenemonthly average≤ .06 lb/dall year001
Benzo[k]fluoranthenedaily maximum≤ .15 lb/dall year001
Benzo[a]pyrenemonthly average≤ .06 lb/dall year001
Benzo[a]pyrenedaily maximum≤ .15 lb/dall year001
Chlorobenzenemonthly average≤ .45 lb/dall year001
Chlorobenzenedaily maximum≤ 1.2 lb/dall year001
Chrysenemonthly average≤ .06 lb/dall year001
Chrysenedaily maximum≤ .15 lb/dall year001
Diethyl phthalatemonthly average≤ .15 lb/dall year001
Diethyl phthalatedaily maximum≤ .36 lb/dall year001
Dimethyl phthalatemonthly average≤ .06 lb/dall year001
Dimethyl phthalatedaily maximum≤ .15 lb/dall year001
Ethylbenzenemonthly average≤ .45 lb/dall year001
Ethylbenzenedaily maximum≤ 1.2 lb/dall year001
Fluoranthenemonthly average≤ .07 lb/dall year001
Fluoranthenedaily maximum≤ .17 lb/dall year001
Fluorenemonthly average≤ .06 lb/dall year001
Fluorenedaily maximum≤ .15 lb/dall year001
Hexachlorobutadienemonthly average≤ .45 lb/dall year001
Hexachlorobutadienedaily maximum≤ 1.2 lb/dall year001
Hexachloroethanemonthly average≤ .62 lb/dall year001
Hexachloroethanedaily maximum≤ 2.52 lb/dall year001
Methyl chloride [Chloromethane]monthly average≤ .35 lb/dall year001
Methyl chloride [Chloromethane]daily maximum≤ .93 lb/dall year001
Methylene chloridemonthly average≤ .11 lb/dall year001
Methylene chloridedaily maximum≤ .54 lb/dall year001
Nitrobenzenemonthly average≤ 7.09 lb/dall year001
Nitrobenzenedaily maximum≤ 20.29 lb/dall year001
Phenanthrenemonthly average≤ .06 lb/dall year001
Phenanthrenedaily maximum≤ .15 lb/dall year001
Pyrenemonthly average≤ .06 lb/dall year001
Pyrenedaily maximum≤ .15 lb/dall year001
Tetrachloroethylenemonthly average≤ .16 lb/dall year001
Tetrachloroethylenedaily maximum≤ .52 lb/dall year001
1,1-Dichloroethanemonthly average≤ .07 lb/dall year001
1,1-Dichloroethanedaily maximum≤ .19 lb/dall year001
1,1-Dichloroethylenemonthly average≤ .07 lb/dall year001
1,1-Dichloroethylenedaily maximum≤ .19 lb/dall year001
1,1,1-Trichloroethanemonthly average≤ .07 lb/dall year001
1,1,1-Trichloroethanedaily maximum≤ .19 lb/dall year001
1,1,2-Trichloroethanemonthly average≤ .1 lb/dall year001
1,1,2-Trichloroethanedaily maximum≤ .4 lb/dall year001
Benzo[a]anthracenemonthly average≤ .06 lb/dall year001
Benzo[a]anthracenedaily maximum≤ .15 lb/dall year001
1,2-Dichlorobenzenemonthly average≤ .62 lb/dall year001
1,2-Dichlorobenzenedaily maximum≤ 2.52 lb/dall year001
1,2-Dichloropropanemonthly average≤ .62 lb/dall year001
1,2-Dichloropropanedaily maximum≤ 2.52 lb/dall year001
trans-1,2-Dichloroethylenemonthly average≤ .08 lb/dall year001
trans-1,2-Dichloroethylenedaily maximum≤ .21 lb/dall year001
1,2,4-Trichlorobenzenemonthly average≤ .62 lb/dall year001
1,2,4-Trichlorobenzenedaily maximum≤ 2.52 lb/dall year001
1,3-Dichlorobenzenemonthly average≤ .45 lb/dall year001
1,3-Dichlorobenzenedaily maximum≤ 1.2 lb/dall year001
1,4-Dichlorobenzenemonthly average≤ .45 lb/dall year001
1,4-Dichlorobenzenedaily maximum≤ 1.2 lb/dall year001
2-Nitrophenolmonthly average≤ .21 lb/dall year001
2-Nitrophenoldaily maximum≤ .73 lb/dall year001
2,4-Dimethylphenolmonthly average≤ .06 lb/dall year001
2,4-Dimethylphenoldaily maximum≤ .15 lb/dall year001
2,4-Dinitrophenolmonthly average≤ 3.83 lb/dall year001
2,4-Dinitrophenoldaily maximum≤ 13.6 lb/dall year001
4-Nitrophenolmonthly average≤ .51 lb/dall year001
4-Nitrophenoldaily maximum≤ 1.83 lb/dall year001
4,6-Dinitro-o-cresolmonthly average≤ .25 lb/dall year001
4,6-Dinitro-o-cresoldaily maximum≤ .88 lb/dall year001
Phenolmonthly average≤ .06 lb/dall year001
Phenoldaily maximum≤ .15 lb/dall year001
Naphthalenemonthly average≤ .06 lb/dall year001
Naphthalenedaily maximum≤ .15 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .3 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .82 lb/dall year001
Di-n-butyl phthalatemonthly average≤ .06 lb/dall year001
Di-n-butyl phthalatedaily maximum≤ .14 lb/dall year001
Vinyl chloridemonthly average≤ .31 lb/dall year001
Vinyl chloridedaily maximum≤ .55 lb/dall year001
Trichloroethylenemonthly average≤ .08 lb/dall year001
Trichloroethylenedaily maximum≤ .22 lb/dall year001
Hexachlorobenzenemonthly average≤ .62 lb/dall year001
Hexachlorobenzenedaily maximum≤ 2.52 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≤ .62 lb/dall year001
1,3-Dichloropropylenedaily maximum≤ 2.52 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 minutesdaily maximum≤ 0 occur/dall year001
pH range excursions, monthly total accummonthly total≤ 446 minall year001
Chloroethanemonthly average≤ .35 lb/dall year001
Chloroethanedaily maximum≤ .93 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101

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/LA0113531 · MCP: https://passage-data.com/mcp