Shell Chemical LP- Geismar Plant — NPDES permit LA0005754: limits, due date and EPA's record

Industrial Organic Chemicals, major discharger, Geismar, Louisiana. NPDES permit LA0005754 expired Oct 31, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (226)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	report only (SU)	all year	001
pH	maximum	report only (SU)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
pH range excursions, > 60 minutes	monthly total	≤ 0 occur/mo	all year	001
pH range excursions, monthly total accum	monthly total	≤ 446 min	all year	001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex	monthly average minimum	report only (pass=0;fail=1)	all year	001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex	48-hour minimum	report only (pass=0;fail=1)	all year	001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas	monthly average minimum	report only (pass=0;fail=1)	all year	001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas	48-hour minimum	report only (pass=0;fail=1)	all year	001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex	monthly average minimum	report only (%)	all year	001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex	48-hour minimum	report only (%)	all year	001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas	monthly average minimum	report only (%)	all year	001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas	48-hour minimum	report only (%)	all year	001
Coef Of Var Static Renewal 48Hr Acute D. pulex	maximum	report only (%)	all year	001
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas	maximum	report only (%)	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	002
Oil and grease	daily maximum	≤ 15 mg/L	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	003
Oil and grease	daily maximum	≤ 15 mg/L	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	004
Oil and grease	daily maximum	≤ 15 mg/L	all year	004
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	005
Oil and grease	daily maximum	≤ 15 mg/L	all year	005
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	005
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
Oil & Grease	daily maximum	≤ 15 mg/L	all year	006
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	006
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	006
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	006
Chlorine, total residual	daily maximum	≤ .2 mg/L	all year	006
pH	instantaneous minimum	≥ 6 SU	all year	007
pH	instantaneous maximum	≤ 9 SU	all year	007
Solids, total suspended	daily maximum	≤ 90 mg/L	all year	007
Solids, total suspended	daily maximum	≤ 90 mg/L	all year	007
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	007
Lead, total [as Pb]	daily maximum	≤ 50 ug/L	all year	007
Oil and grease	daily maximum	≤ 15 mg/L	all year	007
Benzene	daily maximum	≤ 50 ug/L	all year	007
BTEX	daily maximum	≤ 250 ug/L	all year	007
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	007
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	007
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	008
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	008
pH	instantaneous minimum	≥ 6 SU	all year	008
pH	instantaneous maximum	≤ 9 SU	all year	008
Solids, total suspended	monthly average	≤ 30 mg/L	all year	008
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	008
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	008
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	008
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	008
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	008
pH	instantaneous minimum	≥ 6 SU	all year	011
pH	instantaneous maximum	≤ 9 SU	all year	011
Oil & Grease	daily maximum	≤ 15 mg/L	all year	011
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	011
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	011
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	011
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	012
Oil and grease	daily maximum	≤ 15 mg/L	all year	012
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	012
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	012
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	013
Oil and grease	daily maximum	≤ 15 mg/L	all year	013
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	013
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	013
BOD, 5-day, 20 deg. C	monthly average	≤ 1373 lb/d	all year	101
BOD, 5-day, 20 deg. C	daily maximum	≤ 3644 lb/d	all year	101
pH	instantaneous minimum	≥ 6 SU	all year	101
pH	instantaneous maximum	≤ 9 SU	all year	101
Solids, total suspended	monthly average	≤ 2001 lb/d	all year	101
Solids, total suspended	daily maximum	≤ 6378 lb/d	all year	101
Zinc, total [as Zn]	monthly average	≤ .88 lb/d	all year	101
Zinc, total [as Zn]	daily maximum	≤ 2.18 lb/d	all year	101
Carbon tetrachloride	monthly average	≤ .69 lb/d	all year	101
Carbon tetrachloride	daily maximum	≤ 1.45 lb/d	all year	101
1,2-Dichloroethane	monthly average	≤ 2.6 lb/d	all year	101
1,2-Dichloroethane	daily maximum	≤ 8.08 lb/d	all year	101
Chloroform	monthly average	≤ .8 lb/d	all year	101
Chloroform	daily maximum	≤ 1.76 lb/d	all year	101
Toluene	monthly average	≤ 1 lb/d	all year	101
Toluene	daily maximum	≤ 3.06 lb/d	all year	101
Benzene	monthly average	≤ 1.42 lb/d	all year	101
Benzene	daily maximum	≤ 5.21 lb/d	all year	101
Acenaphthylene	monthly average	≤ .84 lb/d	all year	101
Acenaphthylene	daily maximum	≤ 2.26 lb/d	all year	101
Acenaphthene	monthly average	≤ .84 lb/d	all year	101
Acenaphthene	daily maximum	≤ 2.26 lb/d	all year	101
Acrylonitrile	monthly average	≤ 3.67 lb/d	all year	101
Acrylonitrile	daily maximum	≤ 9.26 lb/d	all year	101
Anthracene	monthly average	≤ .84 lb/d	all year	101
Anthracene	daily maximum	≤ 2.26 lb/d	all year	101
Benzo[b]fluoranthene	monthly average	≤ .88 lb/d	all year	101
Benzo[b]fluoranthene	daily maximum	≤ 2.34 lb/d	all year	101
Benzo[k]fluoranthene	monthly average	≤ .84 lb/d	all year	101
Benzo[k]fluoranthene	daily maximum	≤ 2.26 lb/d	all year	101
Benzo[a]pyrene	monthly average	≤ .88 lb/d	all year	101
Benzo[a]pyrene	daily maximum	≤ 2.34 lb/d	all year	101
Chlorobenzene	monthly average	≤ .57 lb/d	all year	101
Chlorobenzene	daily maximum	≤ 1.07 lb/d	all year	101
Chrysene	monthly average	≤ .84 lb/d	all year	101
Chrysene	daily maximum	≤ 2.26 lb/d	all year	101
Diethyl phthalate	monthly average	≤ 3.1 lb/d	all year	101
Diethyl phthalate	daily maximum	≤ 7.77 lb/d	all year	101
Dimethyl phthalate	monthly average	≤ .73 lb/d	all year	101
Dimethyl phthalate	daily maximum	≤ 1.8 lb/d	all year	101
Ethylbenzene	monthly average	≤ 1.22 lb/d	all year	101
Ethylbenzene	daily maximum	≤ 4.13 lb/d	all year	101
Fluoranthene	monthly average	≤ .96 lb/d	all year	101
Fluoranthene	daily maximum	≤ 2.6 lb/d	all year	101
Fluorene	monthly average	≤ .84 lb/d	all year	101
Fluorene	daily maximum	≤ 2.26 lb/d	all year	101
Hexachlorobutadiene	monthly average	≤ .77 lb/d	all year	101
Hexachlorobutadiene	daily maximum	≤ 1.88 lb/d	all year	101
Hexachloroethane	monthly average	≤ .8 lb/d	all year	101
Hexachloroethane	daily maximum	≤ 2.07 lb/d	all year	101
Methyl chloride [Chloromethane]	monthly average	≤ 3.29 lb/d	all year	101
Methyl chloride [Chloromethane]	daily maximum	≤ 7.27 lb/d	all year	101
Methylene chloride	monthly average	≤ 1.53 lb/d	all year	101
Methylene chloride	daily maximum	≤ 3.41 lb/d	all year	101
Nitrobenzene	monthly average	≤ 1.03 lb/d	all year	101
Nitrobenzene	daily maximum	≤ 2.6 lb/d	all year	101
Phenanthrene	monthly average	≤ .84 lb/d	all year	101
Phenanthrene	daily maximum	≤ 2.26 lb/d	all year	101
Pyrene	monthly average	≤ .96 lb/d	all year	101
Pyrene	daily maximum	≤ 2.56 lb/d	all year	101
Tetrachloroethylene	monthly average	≤ .84 lb/d	all year	101
Tetrachloroethylene	daily maximum	≤ 2.14 lb/d	all year	101
1,1-Dichloroethane	monthly average	≤ .84 lb/d	all year	101
1,1-Dichloroethane	daily maximum	≤ 2.26 lb/d	all year	101
1,1-Dichloroethylene	monthly average	≤ .61 lb/d	all year	101
1,1-Dichloroethylene	daily maximum	≤ .96 lb/d	all year	101
1,1,1-Trichloroethane	monthly average	≤ .8 lb/d	all year	101
1,1,1-Trichloroethane	daily maximum	≤ 2.07 lb/d	all year	101
1,1,2-Trichloroethane	monthly average	≤ .8 lb/d	all year	101
1,1,2-Trichloroethane	daily maximum	≤ 2.07 lb/d	all year	101
Benzo[a]anthracene	monthly average	≤ .84 lb/d	all year	101
Benzo[a]anthracene	daily maximum	≤ 2.26 lb/d	all year	101
1,2-Dichlorobenzene	monthly average	≤ 2.95 lb/d	all year	101
1,2-Dichlorobenzene	daily maximum	≤ 6.24 lb/d	all year	101
1,2-Dichloropropane	monthly average	≤ 5.86 lb/d	all year	101
1,2-Dichloropropane	daily maximum	≤ 8.8 lb/d	all year	101
trans-1,2-Dichloroethylene	monthly average	≤ 80 lb/d	all year	101
trans-1,2-Dichloroethylene	daily maximum	≤ 2.07 lb/d	all year	101
1,2,4-Trichlorobenzene	monthly average	≤ 2.6 lb/d	all year	101
1,2,4-Trichlorobenzene	daily maximum	≤ 5.36 lb/d	all year	101
1,3-Dichlorobenzene	monthly average	≤ 1.19 lb/d	all year	101
1,3-Dichlorobenzene	daily maximum	≤ 1.68 lb/d	all year	101
1,4-Dichlorobenzene	monthly average	≤ .57 lb/d	all year	101
1,4-Dichlorobenzene	daily maximum	≤ 1.07 lb/d	all year	101
2-Chlorophenol	monthly average	≤ 1.19 lb/d	all year	101
2-Chlorophenol	daily maximum	≤ 3.75 lb/d	all year	101
2-Nitrophenol	monthly average	≤ 1.57 lb/d	all year	101
2-Nitrophenol	daily maximum	≤ 2.64 lb/d	all year	101
2,4-Dichlorophenol	monthly average	≤ 1.49 lb/d	all year	101
2,4-Dichlorophenol	daily maximum	≤ 4.29 lb/d	all year	101
2,4-Dimethylphenol	monthly average	≤ .69 lb/d	all year	101
2,4-Dimethylphenol	daily maximum	≤ 1.38 lb/d	all year	101
2,4-Dinitrotoluene	monthly average	≤ 4.33 lb/d	all year	101
2,4-Dinitrotoluene	daily maximum	≤ 10.91 lb/d	all year	101
2,4-Dinitrophenol	monthly average	≤ 2.72 lb/d	all year	101
2,4-Dinitrophenol	daily maximum	≤ 4.71 lb/d	all year	101
2,6-Dinitrotoluene	monthly average	≤ 9.76 lb/d	all year	101
2,6-Dinitrotoluene	daily maximum	≤ 24.54 lb/d	all year	101
4-Nitrophenol	monthly average	≤ 2.76 lb/d	all year	101
4-Nitrophenol	daily maximum	≤ 4.75 lb/d	all year	101
4,6-Dinitro-o-cresol	monthly average	≤ 2.99 lb/d	all year	101
4,6-Dinitro-o-cresol	daily maximum	≤ 10.6 lb/d	all year	101
Phenol	monthly average	≤ .57 lb/d	all year	101
Phenol	daily maximum	≤ 1 lb/d	all year	101
Naphthalene	monthly average	≤ .84 lb/d	all year	101
Naphthalene	daily maximum	≤ 2.26 lb/d	all year	101
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ 3.94 lb/d	all year	101
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 10.68 lb/d	all year	101
Di-n-butyl phthalate	monthly average	≤ 1.03 lb/d	all year	101
Di-n-butyl phthalate	daily maximum	≤ 2.18 lb/d	all year	101
Vinyl chloride	monthly average	≤ 3.98 lb/d	all year	101
Vinyl chloride	daily maximum	≤ 10.26 lb/d	all year	101
Trichloroethylene	monthly average	≤ .8 lb/d	all year	101
Trichloroethylene	daily maximum	≤ 2.07 lb/d	all year	101
Hexachlorobenzene	monthly average	≤ .57 lb/d	all year	101
Hexachlorobenzene	daily maximum	≤ 1.07 lb/d	all year	101
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	101
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	101
1,3-Dichloropropene	monthly average	≤ 1.11 lb/d	all year	101
1,3-Dichloropropene	daily maximum	≤ 1.68 lb/d	all year	101
Chloroethane	monthly average	≤ 3.98 lb/d	all year	101
Chloroethane	daily maximum	≤ 10.26 lb/d	all year	101
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	201
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	201
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year	301
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year	301
Carbon, tot organic [TOC]	daily maximum	≤ 5 mg/L	all year	301
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	301
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	301
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year	401
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year	401
Carbon, tot organic [TOC]	daily maximum	≤ 5 mg/L	all year	401
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	401
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	401
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	501
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	501
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	501
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	601
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	601
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	601
Oil & Grease	daily maximum	≤ 15 mg/L	all year	701
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	701
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	701
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	701

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/LA0005754 · MCP: https://passage-data.com/mcp