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Chemours Company FC LLC, the Delisle Plant

Inorganic Pigments, major discharger, Pass Christian, Mississippi. NPDES permit MS0027294 expired Sep 30, 2024; its limits still apply. 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 (21 values), outfall 002 form A monthly (8 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 24 reports late

Limits in force (31)

ParameterStatisticLimitMonthsOutfall
Tide stagedaily minimum≥ 12 inall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 60 mg/Lall year001
Solids, total suspendedmonthly average≤ 943.3 lb/dall year001
Solids, total suspendeddaily maximum≤ 1886.5 lb/dall year001
Nickel, total recoverablemonthly average≤ .212 mg/Lall year001
Nickel, total recoverabledaily maximum≤ .423 mg/Lall year001
Nickel, total recoverablemonthly average≤ 6.7 lb/dall year001
Nickel, total recoverabledaily maximum≤ 13.3 lb/dall year001
Chromium, total recoverablemonthly average≤ 1.276 mg/Lall year001
Chromium, total recoverabledaily maximum≤ 2.551 mg/Lall year001
Chromium, total recoverablemonthly average≤ 40.1 lb/dall year001
Chromium, total recoverabledaily maximum≤ 80.2 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
Temperature, summer [deg. F]monthly averagereport only (deg F)May–Oct001
Temperature, summer [deg. F]daily maximum≤ 100 deg FMay–Oct001
Temperature, winter [deg. F]monthly averagereport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec001
Temperature, winter [deg. F]daily maximum≤ 95 deg FJan, Feb, Mar, Apr, Nov, Dec001
pH range excursions, > 60 minutesdaily maximum≤ 0 occur/moall year001
pH range excursions, monthly total accummaximum≤ 446 minall year001
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 60 mg/Lall year002
Solids, total suspendedmonthly averagereport only (lb/d)all year002
Solids, total suspendeddaily maximumreport only (lb/d)all 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

How strict are these limits?

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

Same industry: the 23 Chemicals and Allied Products permits in Mississippi.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0027294 · MCP: https://passage-data.com/mcp