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Si Group, Inc.

Industrial Organic Chemicals, major discharger, Morgantown, West Virginia. NPDES permit WV0004740, in force until May 20, 2030. Last 12 months: over a limit 3 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form A monthly (12 values), outfall 001 form B quarterly (96 values), outfall 002 form B quarterly (6 values), outfall 101 form A monthly (10 values), outfall 101 form B quarterly (44 values), outfall 001 form C twice a year, and 3 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 40 reports late

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

Period endingParameterReportedLimitOver by
March 2026Aluminum, total recoverable, daily maximum2.03 mg/L≤ 1.8 mg/L13%
March 2026Iron, total [as Fe], daily maximum2.04 mg/L≤ 1.5 mg/L36%
June 2026Iron, total [as Fe], daily maximum1.68 mg/L≤ 1.5 mg/L12%

Limits in force (218)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Oct001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)May001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Nov001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Aug001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jan001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Mar001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Feb001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Dec001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jun001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Apr001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jul001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Sep001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Oct001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)May001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Nov001
Temperature, water deg. fahrenheitdaily maximum≤ 107.8 deg FAug001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jan001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Mar001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Feb001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Dec001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Apr001
Temperature, water deg. fahrenheitdaily maximum≤ 104.1 deg FJul001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Sep001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temp. diff. between samp. & upstrm deg. Fmonthly averagereport only (deg F)all year001
Temp. diff. between samp. & upstrm deg. Fdaily maximum≤ 22 deg Fall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Oil and grease, hexane extr methodmonthly average≤ 9 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 14 mg/Lall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year001
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year001
Chloride [as Cl]monthly averagereport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Arsenic, total recoverablemonthly averagereport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (mg/L)all year001
Iron, total recoverablemonthly averagereport only (mg/L)all year001
Iron, total recoverabledaily maximumreport only (mg/L)all year001
Zinc, total recoverablemonthly averagereport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
1,2-Dichloroethanemonthly averagereport only (ug/L)all year001
1,2-Dichloroethanedaily maximumreport only (ug/L)all year001
Chloroformmonthly averagereport only (ug/L)all year001
Chloroformdaily maximumreport only (ug/L)all year001
Chloroformmonthly averagereport only (lb/d)all year001
Chloroformdaily maximumreport only (lb/d)all year001
Phenolics, total recoverablemonthly averagereport only (ug/L)all year001
Phenolics, total recoverabledaily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]monthly averagereport only (ug/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]monthly averagereport only (lb/d)all year001
Methyl chloride [Chloromethane]daily maximumreport only (lb/d)all year001
1,2-Dichloropropanemonthly averagereport only (ug/L)all year001
1,2-Dichloropropanedaily maximumreport only (ug/L)all year001
1,2-Dichloropropanemonthly averagereport only (lb/d)all year001
1,2-Dichloropropanedaily maximumreport only (lb/d)all year001
2,4,6-Trichlorophenolmonthly averagereport only (ug/L)all year001
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all year001
2,4,6-Trichlorophenolmonthly averagereport only (lb/d)all year001
2,4,6-Trichlorophenoldaily maximumreport only (lb/d)all 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
Perfluorooctanoic acid (PFOA)monthly averagereport only (ng/L)all year001
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all year001
Perfluorooctanoic acid (PFOA)monthly averagereport only (lb/d)all year001
Perfluorooctanoic acid (PFOA)daily maximumreport only (lb/d)all year001
Perfluorobutanoic acid (PFBA)monthly averagereport only (ng/L)all year001
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all year001
Perfluorobutanoic acid (PFBA)monthly averagereport only (lb/d)all year001
Perfluorobutanoic acid (PFBA)daily maximumreport only (lb/d)all year001
Perfluoropentanoic acid (PFPeA)monthly averagereport only (ng/L)all year001
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all year001
Perfluoropentanoic acid (PFPeA)monthly averagereport only (lb/d)all year001
Perfluoropentanoic acid (PFPeA)daily maximumreport only (lb/d)all year001
Perfluorohexanoic acid (PFHxA)monthly averagereport only (ng/L)all year001
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all year001
Perfluorohexanoic acid (PFHxA)monthly averagereport only (lb/d)all year001
Perfluorohexanoic acid (PFHxA)daily maximumreport only (lb/d)all year001
Perfluoroheptanoic acid (PFHpA)monthly averagereport only (ng/L)all year001
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all year001
Perfluoroheptanoic acid (PFHpA)monthly averagereport only (lb/d)all year001
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (lb/d)all year001
Perfluorononanoic acid (PFNA)monthly averagereport only (ng/L)all year001
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all year001
Perfluorononanoic acid (PFNA)monthly averagereport only (lb/d)all year001
Perfluorononanoic acid (PFNA)daily maximumreport only (lb/d)all year001
Perfluorodecanoic acid (PFDA)monthly averagereport only (ng/L)all year001
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all year001
Perfluorodecanoic acid (PFDA)monthly averagereport only (lb/d)all year001
Perfluorodecanoic acid (PFDA)daily maximumreport only (lb/d)all year001
Perfluorododecanoic acid (PFDoA)monthly averagereport only (ng/L)all year001
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all year001
Perfluorododecanoic acid (PFDoA)monthly averagereport only (lb/d)all year001
Perfluorododecanoic acid (PFDoA)daily maximumreport only (lb/d)all year001
Perfluorobutanesulfonic acid (PFBS)monthly averagereport only (ng/L)all year001
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all year001
Perfluorobutanesulfonic acid (PFBS)monthly averagereport only (lb/d)all year001
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (lb/d)all year001
Perfluoroheptanesulfonic acid (PFHpS)monthly averagereport only (ng/L)all year001
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all year001
Perfluoroheptanesulfonic acid (PFHpS)monthly averagereport only (lb/d)all year001
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (lb/d)all year001
Perfluorohexanesulfonic acid (PFHxS)monthly averagereport only (ng/L)all year001
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all year001
Perfluorohexanesulfonic acid (PFHxS)monthly averagereport only (lb/d)all year001
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (lb/d)all year001
Perfluorooctanesulfonic acid (PFOS)monthly averagereport only (ng/L)all year001
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all year001
Perfluorooctanesulfonic acid (PFOS)monthly averagereport only (lb/d)all year001
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (lb/d)all year001
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)monthly averagereport only (ng/L)all year001
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all year001
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)monthly averagereport only (lb/d)all year001
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (lb/d)all year001
Perfluoropentanesulfonic acid (PFPeS)monthly averagereport only (ng/L)all year001
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all year001
Perfluoropentanesulfonic acid (PFPeS)monthly averagereport only (lb/d)all year001
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (lb/d)all year001
Hexafluoropropylene oxide dimer acid (HFPO-DA)monthly averagereport only (ng/L)all year001
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all year001
Hexafluoropropylene oxide dimer acid (HFPO-DA)monthly averagereport only (lb/d)all year001
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (lb/d)all year001
Toxicity [acute], Ceriodaphnia dubiamonthly average≤ .64 tox acuteall year001
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1.28 tox acuteall year001
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly average≤ .64 tox acuteall year001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1.28 tox acuteall year001
Mercury, total [as Hg]monthly averagereport only (ug/L)all year001
Mercury, total [as Hg]daily maximumreport only (ug/L)all year001
Chemical Oxygen Demand [COD]monthly averagereport only (mg/L)all year001
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year001
Chloroethanemonthly averagereport only (ug/L)all year001
Chloroethanedaily maximumreport only (ug/L)all year001
Chloroethanemonthly averagereport only (lb/d)all year001
Chloroethanedaily maximumreport only (lb/d)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year002
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year002
Oxygen demand, chem. [high level] [COD]monthly averagereport only (mg/L)all year002
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year002
pHinstantaneous minimumreport only (SU)all year002
pHinstantaneous maximumreport only (SU)all year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year002
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year002
Iron, total [as Fe]monthly averagereport only (mg/L)all year002
Iron, total [as Fe]daily maximum≤ 1.5 mg/Lall year002
Aluminum, total recoverablemonthly averagereport only (mg/L)all year002
Aluminum, total recoverabledaily maximum≤ 1.8 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
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year101
BOD, 5-day, 20 deg. Cmonthly average≤ 38 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 102 lb/dall year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101
Solids, total suspendeddaily maximumreport only (mg/L)all year101
Solids, total suspendedmonthly average≤ 49 lb/dall year101
Solids, total suspendeddaily maximum≤ 158 lb/dall year101
1,2-Dichloroethanemonthly averagereport only (ug/L)all year101
1,2-Dichloroethanedaily maximumreport only (ug/L)all year101
1,2-Dichloroethanemonthly average≤ .06 lb/dall year101
1,2-Dichloroethanedaily maximum≤ .186 lb/dall year101
Chloroformmonthly averagereport only (ug/L)all year101
Chloroformdaily maximumreport only (ug/L)all year101
Chloroformmonthly average≤ .019 lb/dall year101
Chloroformdaily maximum≤ .041 lb/dall year101
Toluenemonthly averagereport only (ug/L)all year101
Toluenedaily maximumreport only (ug/L)all year101
Toluenemonthly average≤ .023 lb/dall year101
Toluenedaily maximum≤ .07 lb/dall year101
Chrysenemonthly averagereport only (ug/L)all year101
Chrysenedaily maximumreport only (ug/L)all year101
Chrysenemonthly average≤ .019 lb/dall year101
Chrysenedaily maximum≤ .052 lb/dall year101
Pyrenemonthly averagereport only (ug/L)all year101
Pyrenedaily maximumreport only (ug/L)all year101
Pyrenemonthly average≤ .022 lb/dall year101
Pyrenedaily maximum≤ .059 lb/dall year101
1,2-Dichloropropanemonthly averagereport only (ug/L)all year101
1,2-Dichloropropanedaily maximumreport only (ug/L)all year101
1,2-Dichloropropanemonthly average≤ .135 lb/dall year101
1,2-Dichloropropanedaily maximum≤ .203 lb/dall year101
2,4-Dichlorophenolmonthly averagereport only (ug/L)all year101
2,4-Dichlorophenoldaily maximumreport only (ug/L)all year101
2,4-Dichlorophenolmonthly average≤ .034 lb/dall year101
2,4-Dichlorophenoldaily maximum≤ .099 lb/dall year101
Phenolmonthly averagereport only (ug/L)all year101
Phenoldaily maximumreport only (ug/L)all year101
Phenolmonthly average≤ .013 lb/dall year101
Phenoldaily maximum≤ .023 lb/dall year101
Di[2-ethylhexyl] phthalate [DEHP]monthly averagereport only (ug/L)all year101
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year101
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .091 lb/dall year101
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .246 lb/dall year101
Hexachlorobenzenemonthly averagereport only (ug/L)all year101
Hexachlorobenzenedaily maximumreport only (ug/L)all year101
Hexachlorobenzenemonthly average≤ .013 lb/dall year101
Hexachlorobenzenedaily maximum≤ .025 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
3,4-Benzofluoranthenemonthly averagereport only (ug/L)all year101
3,4-Benzofluoranthenedaily maximumreport only (ug/L)all year101
3,4-Benzofluoranthenemonthly average≤ .02 lb/dall year101
3,4-Benzofluoranthenedaily maximum≤ .054 lb/dall year101
Chloroethanemonthly averagereport only (ug/L)all year101
Chloroethanedaily maximumreport only (ug/L)all year101
Chloroethanemonthly average≤ .092 lb/dall year101
Chloroethanedaily maximum≤ .236 lb/dall year101

How strict are these limits?

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

Same industry: the 28 Chemicals and Allied Products permits in West Virginia.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WV0004740 · MCP: https://passage-data.com/mcp