LINDE AIR SEPARATION UNIT

NPDES ID: TX0135101

S — SNC: Compliance schedule violation

The facility missed a deadline in its compliance schedule by more than 90 days.

Violations

October 31, 2025

Copper, total [as Cu]

118% over limit

Discharged 0.095 mg/L against a permitted limit of 0.0435 mg/L (DAILY AV)

DMR, Limited - Numeric Violation

Copper, total [as Cu]

128% over limit

Discharged 0.21 mg/L against a permitted limit of 0.0921 mg/L (DAILY MX)

DMR, Limited - Numeric Violation

First flagged

April 14, 2026 (3 months ago)

Last confirmed

July 13, 2026 (24 days ago)