PIONEER CRYOGENIC GAS PLANT
NPDES ID: WY0056499
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
Violations
February 28, 2026
Fluoride
73% over limit
Discharged 3.45 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Fluoride
97% over limit
Discharged 3.93 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Fluoride
87% over limit
Discharged 3.73 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Fluoride
88% over limit
Discharged 3.76 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Fluoride
66% over limit
Discharged 3.32 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Fluoride
95% over limit
Discharged 3.9 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (6 days ago)