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Tokai Carbon GE LLC

Carbon And Graphite Products, Altus, Arkansas. NPDES permit AR0037851, in force until Dec 31, 2030. Last 12 months: over a limit 4 times (last August 2026), 1 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026Oil & Grease, daily maximum55.6 mg/L≤ 15 mg/L271%
February 2026Oil & Grease, monthly average34.9 mg/L≤ 10 mg/L249%
March 2026Oil & Grease, monthly average< 11.4 mg/L≤ 10 mg/L14%
August 2026pH, minimum5.7 SU≥ 6 SU—

Limits in force (16)

ParameterStatisticLimitMonths
Oxygen demand, chem. [low level] [COD]monthly average≤ 50 mg/Lall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 75 mg/Lall year
Oxygen demand, chem. [low level] [COD]monthly average≤ 74.2 lb/dall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 111.3 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 29.7 lb/dall year
Solids, total suspendeddaily maximum≤ 44.5 lb/dall year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Oil & Greasemonthly average≤ 14.8 lb/dall year
Oil & Greasedaily maximum≤ 22.3 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0037851 · MCP: https://passage-data.com/mcp