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Sofidel America Corp HQ

Paper Mills, Inola, Oklahoma. NPDES permit OK0100676, in force until Feb 28, 2029. Last 12 months: over a limit 4 times (last February 2026), 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 9 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily maximum334 mg/L≤ 120 mg/L178%
December 2025Solids, total suspended, monthly average87.8 mg/L≤ 80 mg/L10%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum111 mg/L≤ 90 mg/L23%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum94 mg/L≤ 90 mg/L4%

Limits in force (16)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 80 mg/Lall year
Solids, total suspendeddaily maximum≤ 120 mg/Lall year
Solids, total suspendedmonthly average≤ 2001.6 lb/dall year
Solids, total suspendeddaily maximum≤ 3002.4 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 250.2 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 375.3 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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 60 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 90 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1501.2 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 2251.8 lb/dall year

How strict are these limits?

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

Same industry: the 5 Paper and Allied Products permits in Oklahoma.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0100676 · MCP: https://passage-data.com/mcp