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Airgas USA, LLC

Industrial Gases, Blytheville, Arkansas. NPDES permit AR0046663, in force until Jan 31, 2031. Last 12 months: over a limit once (last March 2026), 8 of 34 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form AA monthly (4 values), form BA monthly (4 values), form AB quarterly, form BB quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 9 required values missing, 10 of 36 reports late

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

Period endingParameterReportedLimitOver by
March 2026Oil & Grease, monthly average3.48 lb/d≤ 2.7 lb/d29%

Limits in force (26)

ParameterStatisticLimitMonths
Total production - massmonthly averagereport only (1000 lb/d)all year
Total production - massmonthly averagereport only (1000 lb/d)all year
Oxygen demand, chem. [low level] [COD]monthly average≤ 100 mg/Lall year
Oxygen demand, chem. [low level] [COD]monthly average≤ 100 mg/Lall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 150 mg/Lall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 150 mg/Lall year
Oxygen demand, chem. [low level] [COD]monthly average≤ 59.2 lb/dall year
Oxygen demand, chem. [low level] [COD]monthly average≤ 59.2 lb/dall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 88.8 lb/dall year
Oxygen demand, chem. [low level] [COD]daily maximum≤ 88.8 lb/dall year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Oil & Greasemonthly average≤ 1.9 lb/dall year
Oil & Greasemonthly average≤ 2.7 lb/dall year
Oil & Greasedaily maximum≤ 3.7 lb/dall year
Oil & Greasedaily maximum≤ 5.4 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all 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
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

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

Same industry: the 15 Chemicals and Allied Products permits in Arkansas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0046663 · MCP: https://passage-data.com/mcp