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The Chemours Company FC LLC

Metal Ores, Macclenny, Florida. NPDES permit FL0435490 expired Sep 12, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 90 days after each period: outfall 001 form 1 monthly (22 values), outfall 001 form Q quarterly (2 values), outfall 002 form 1 monthly (28 values), outfall 002 form Q quarterly (2 values), outfall 003 form 1 monthly (28 values), outfall 003 form Q quarterly (2 values), and 30 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 153 reports late

Limits in force (267)

ParameterStatisticLimitMonthsOutfall
Turbiditymaximumreport only (NTU)all year001
Turbiditymaximumreport only (NTU)all year001
Turbiditymaximumreport only (NTU)all year001
Turbiditymaximum≤ 0 NTUall year001
pHdaily minimumreport only (SU)all year001
pHdaily maximumreport only (SU)all year001
pHdaily minimumreport only (SU)all year001
pHdaily maximumreport only (SU)all year001
pHdaily minimumreport only (SU)all year001
pHdaily maximumreport only (SU)all year001
pHdaily minimum≥ 0 SUall year001
pHdaily maximum≤ 0 SUall year001
Solids, total suspendedmonthly average≤ 20 mg/Lall year001
Solids, total suspendeddaily maximum≤ 30 mg/Lall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Iron, total recoverabledaily maximum≤ 1 mg/Lall year001
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year001
Mercury, total recoverabledaily maximumreport only (ug/L)all year001
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year001
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year001
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year001
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year001
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year001
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year001
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year001
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximum≤ 0 NTUall year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
Turbiditymaximumreport only (NTU)all year002
pHdaily minimumreport only (SU)all year002
pHdaily maximumreport only (SU)all year002
pHdaily minimumreport only (SU)all year002
pHdaily maximumreport only (SU)all year002
pHdaily minimumreport only (SU)all year002
pHdaily maximumreport only (SU)all year002
pHdaily minimum≥ 0 SUall year002
pHdaily maximum≤ 0 SUall year002
Solids, total suspendedmonthly average≤ 20 mg/Lall year002
Solids, total suspendeddaily maximum≤ 30 mg/Lall year002
Nitrogen, total [as N]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]daily maximumreport only (mg/L)all year002
Iron, total recoverabledaily maximum≤ 1 mg/Lall year002
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year002
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year002
Mercury, total recoverabledaily maximumreport only (ug/L)all year002
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year002
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year002
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year002
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year002
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year002
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year002
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year002
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximum≤ 0 NTUall year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
Turbiditymaximumreport only (NTU)all year003
pHdaily minimumreport only (SU)all year003
pHdaily maximumreport only (SU)all year003
pHdaily minimumreport only (SU)all year003
pHdaily maximumreport only (SU)all year003
pHdaily minimumreport only (SU)all year003
pHdaily maximumreport only (SU)all year003
pHdaily minimum≥ 0 SUall year003
pHdaily maximum≤ 0 SUall year003
Solids, total suspendedmonthly average≤ 20 mg/Lall year003
Solids, total suspendeddaily maximum≤ 30 mg/Lall year003
Nitrogen, total [as N]daily maximumreport only (mg/L)all year003
Phosphorus, total [as P]daily maximumreport only (mg/L)all year003
Iron, total recoverabledaily maximum≤ 1 mg/Lall year003
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year003
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year003
Mercury, total recoverabledaily maximumreport only (ug/L)all year003
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year003
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year003
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year003
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year003
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year003
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year003
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year003
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximum≤ 0 NTUall year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
Turbiditymaximumreport only (NTU)all year004
pHdaily minimumreport only (SU)all year004
pHdaily maximumreport only (SU)all year004
pHdaily minimumreport only (SU)all year004
pHdaily maximumreport only (SU)all year004
pHdaily minimumreport only (SU)all year004
pHdaily maximumreport only (SU)all year004
pHdaily minimum≥ 0 SUall year004
pHdaily maximum≤ 0 SUall year004
Solids, total suspendedmonthly average≤ 20 mg/Lall year004
Solids, total suspendeddaily maximum≤ 30 mg/Lall year004
Nitrogen, total [as N]daily maximumreport only (mg/L)all year004
Phosphorus, total [as P]daily maximumreport only (mg/L)all year004
Iron, total recoverabledaily maximum≤ 1 mg/Lall year004
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year004
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year004
Mercury, total recoverabledaily maximumreport only (ug/L)all year004
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year004
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year004
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year004
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year004
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year004
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year004
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year004
Turbiditymaximumreport only (NTU)all year005
Turbiditymaximumreport only (NTU)all year005
Turbiditymaximumreport only (NTU)all year005
Turbiditymaximum≤ 0 NTUall year005
pHdaily minimumreport only (SU)all year005
pHdaily maximumreport only (SU)all year005
pHdaily minimumreport only (SU)all year005
pHdaily maximumreport only (SU)all year005
pHdaily minimumreport only (SU)all year005
pHdaily maximumreport only (SU)all year005
pHdaily minimum≥ 0 SUall year005
pHdaily maximum≤ 0 SUall year005
Solids, total suspendedmonthly average≤ 20 mg/Lall year005
Solids, total suspendeddaily maximum≤ 30 mg/Lall year005
Nitrogen, total [as N]daily maximumreport only (mg/L)all year005
Phosphorus, total [as P]daily maximumreport only (mg/L)all year005
Iron, total recoverabledaily maximum≤ 1 mg/Lall year005
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year005
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year005
Mercury, total recoverabledaily maximumreport only (ug/L)all year005
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year005
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year005
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year005
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year005
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year005
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year005
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year005
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximum≤ 0 NTUall year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
Turbiditymaximumreport only (NTU)all year006
pHmonthly minimumreport only (SU)all year006
pHdaily maximumreport only (SU)all year006
pHdaily minimumreport only (SU)all year006
pHdaily maximumreport only (SU)all year006
pHdaily minimumreport only (SU)all year006
pHdaily maximumreport only (SU)all year006
pHdaily minimum≥ 0 SUall year006
pHdaily maximum≤ 0 SUall year006
Solids, total suspendedmonthly average≤ 20 mg/Lall year006
Solids, total suspendeddaily maximum≤ 30 mg/Lall year006
Nitrogen, total [as N]daily maximumreport only (mg/L)all year006
Phosphorus, total [as P]daily maximumreport only (mg/L)all year006
Iron, total recoverabledaily maximum≤ 1 mg/Lall year006
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year006
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year006
Mercury, total recoverabledaily maximumreport only (ug/L)all year006
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year006
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year006
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year006
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year006
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year006
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year006
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year006
Turbiditymaximumreport only (NTU)all year007
Turbiditymaximumreport only (NTU)all year007
Turbiditymaximumreport only (NTU)all year007
Turbiditymaximum≤ 0 NTUall year007
pHdaily minimumreport only (SU)all year007
pHdaily maximumreport only (SU)all year007
pHdaily minimumreport only (SU)all year007
pHdaily maximumreport only (SU)all year007
pHdaily minimumreport only (SU)all year007
pHdaily maximumreport only (SU)all year007
pHdaily minimum≥ 0 SUall year007
pHdaily maximum≤ 0 SUall year007
Solids, total suspendedmonthly average≤ 20 mg/Lall year007
Solids, total suspendeddaily maximum≤ 30 mg/Lall year007
Nitrogen, total [as N]daily maximumreport only (mg/L)all year007
Phosphorus, total [as P]daily maximumreport only (mg/L)all year007
Iron, total recoverabledaily maximum≤ 1 mg/Lall year007
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year007
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year007
Mercury, total recoverabledaily maximumreport only (ug/L)all year007
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year007
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year007
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year007
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year007
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year007
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year007
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year007
Turbiditymaximumreport only (NTU)all year008
Turbiditymaximumreport only (NTU)all year008
Turbiditymaximumreport only (NTU)all year008
Turbiditymaximum≤ 0 NTUall year008
pHdaily minimumreport only (SU)all year008
pHdaily maximumreport only (SU)all year008
pHdaily minimumreport only (SU)all year008
pHdaily maximumreport only (SU)all year008
pHdaily minimumreport only (SU)all year008
pHdaily maximumreport only (SU)all year008
pHdaily minimum≥ 0 SUall year008
pHdaily maximum≤ 0 SUall year008
Solids, total suspendedmonthly average≤ 20 mg/Lall year008
Solids, total suspendeddaily maximum≤ 30 mg/Lall year008
Nitrogen, total [as N]daily maximumreport only (mg/L)all year008
Phosphorus, total [as P]daily maximumreport only (mg/L)all year008
Iron, total recoverabledaily maximum≤ 1 mg/Lall year008
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year008
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year008
Mercury, total recoverabledaily maximumreport only (ug/L)all year008
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year008
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year008
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year008
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year008
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year008
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year008
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year008
Turbiditymaximumreport only (NTU)all year011
Turbiditymaximumreport only (NTU)all year011
Turbiditymaximumreport only (NTU)all year011
Turbiditymaximum≤ 0 NTUall year011
pHdaily minimumreport only (SU)all year011
pHdaily maximumreport only (SU)all year011
pHdaily minimumreport only (SU)all year011
pHdaily maximumreport only (SU)all year011
pHdaily minimumreport only (SU)all year011
pHdaily maximumreport only (SU)all year011
pHdaily minimum≥ 0 SUall year011
pHdaily maximum≤ 0 SUall year011
Solids, total suspendedmonthly average≤ 20 mg/Lall year011
Solids, total suspendeddaily maximum≤ 30 mg/Lall year011
Nitrogen, total [as N]daily maximumreport only (mg/L)all year011
Phosphorus, total [as P]daily maximumreport only (mg/L)all year011
Iron, total recoverabledaily maximum≤ 1 mg/Lall year011
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year011
Flow, in conduit or thru treatment plantdaily maximum≤ 5 MGDall year011
Mercury, total recoverabledaily maximumreport only (ug/L)all year011
Alpha, gross particle activitydaily maximum≤ 15 pCi/Lall year011
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year011
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year011
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year011
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year011
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year011
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 100 %all year011

How strict are these limits?

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

Same industry: the 5 Metal Mining permits in Florida.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/FL0435490 · MCP: https://passage-data.com/mcp