CARDINAL OPERATING COMPANY - CARDINAL PLANT
NPDES ID: OH0012581
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 1 effluent violation.
Violations
April 30, 2026
Oil and grease, hexane extr method
90% over limit
Discharged 38 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Selenium, total recoverable
121% over limit
Discharged 0.064 mg/L against a permitted limit of 0.029 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Arsenic, total recoverable
38% over limit
Discharged 0.011 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Oil and grease, hexane extr method
5% over limit
Discharged 21 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)