AIR LIQUIDE LARGE INDUSTRIES US LP

NPDES permit TX0065021 · Minor NON-POTW · effective, expires 2031-02-24 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (34)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY AV <= 95 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 100 deg F all year
001Oxygen demand, chem. [high level] [COD]DAILY AV report only all year
001Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
001Oxygen demand, chem. [high level] [COD]DAILY AV <= 230 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 361 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedDAILY AV <= 115 lb/d all year
001Solids, total suspendedDAILY MX <= 192 lb/d all year
001Oil & GreaseDAILY AV report only all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY AV <= 15.7 lb/d all year
001Oil & GreaseDAILY MX <= 21 lb/d all year
001Cyanide, free [as free]DAILY AV <= .022 mg/L all year
001Cyanide, free [as free]DAILY MX <= .047 mg/L all year
001Cyanide, free [as free]DAILY AV <= .084 lb/d all year
001Cyanide, free [as free]DAILY MX <= .18 lb/d all year
001Copper, total [as Cu]DAILY AV <= .0557 mg/L all year
001Copper, total [as Cu]DAILY MX <= .117 mg/L all year
001Copper, total [as Cu]DAILY AV <= .214 lb/d all year
001Copper, total [as Cu]DAILY MX <= .449 lb/d all year
001Zinc, total [as Zn]DAILY AV <= .951 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 2.01 mg/L all year
001Zinc, total [as Zn]DAILY AV <= 3.65 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 7.72 lb/d all year
001Aluminum, total [as Al]DAILY AV <= .486 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 1.03 mg/L all year
001Aluminum, total [as Al]DAILY AV <= 1.87 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 3.95 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .46 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .58 MGD all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states