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Air Liquide Large Industries US LP

Industrial Gases, Freeport, Texas. NPDES permit TX0065021, in force until Feb 24, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (34 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (34)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily average≤ 95 deg Fall year
Temperature, water deg. fahrenheitdaily maximum≤ 100 deg Fall year
Oxygen demand, chem. [high level] [COD]daily averagereport only (mg/L)all year
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year
Oxygen demand, chem. [high level] [COD]daily average≤ 230 lb/dall year
Oxygen demand, chem. [high level] [COD]daily maximum≤ 361 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily average≤ 115 lb/dall year
Solids, total suspendeddaily maximum≤ 192 lb/dall year
Oil & Greasedaily averagereport only (mg/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Oil & Greasedaily average≤ 15.7 lb/dall year
Oil & Greasedaily maximum≤ 21 lb/dall year
Cyanide, free [as free]daily average≤ .022 mg/Lall year
Cyanide, free [as free]daily maximum≤ .047 mg/Lall year
Cyanide, free [as free]daily average≤ .084 lb/dall year
Cyanide, free [as free]daily maximum≤ .18 lb/dall year
Copper, total [as Cu]daily average≤ .0557 mg/Lall year
Copper, total [as Cu]daily maximum≤ .117 mg/Lall year
Copper, total [as Cu]daily average≤ .214 lb/dall year
Copper, total [as Cu]daily maximum≤ .449 lb/dall year
Zinc, total [as Zn]daily average≤ .951 mg/Lall year
Zinc, total [as Zn]daily maximum≤ 2.01 mg/Lall year
Zinc, total [as Zn]daily average≤ 3.65 lb/dall year
Zinc, total [as Zn]daily maximum≤ 7.72 lb/dall year
Aluminum, total [as Al]daily average≤ .486 mg/Lall year
Aluminum, total [as Al]daily maximum≤ 1.03 mg/Lall year
Aluminum, total [as Al]daily average≤ 1.87 lb/dall year
Aluminum, total [as Al]daily maximum≤ 3.95 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .46 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .58 MGDall year

How strict are these limits?

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

Same industry: the 165 Chemicals and Allied Products permits in Texas.

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Your permit document is the final word. As JSON: /api/v1/permits/TX0065021 · MCP: https://passage-data.com/mcp