TRI COUNTY PIT
NPDES ID: COG500498
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations.
Violations
May 31, 2026
Selenium, potentially dissolvd
44% over limit
Discharged 0.013 mg/L against a permitted limit of 0.009 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Selenium, potentially dissolvd
38% over limit
Discharged 0.018 mg/L against a permitted limit of 0.013 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Selenium, potentially dissolvd
226% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Selenium, potentially dissolvd
215% over limit
Discharged 0.0145 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Selenium, potentially dissolvd
183% over limit
Discharged 0.013 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Selenium, potentially dissolvd
335% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Selenium, potentially dissolvd
280% over limit
Discharged 0.0175 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Selenium, potentially dissolvd
237% over limit
Discharged 0.0155 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Selenium, potentially dissolvd
117% over limit
Discharged 0.01 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Selenium, potentially dissolvd
237% over limit
Discharged 0.0155 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Selenium, potentially dissolvd
259% over limit
Discharged 0.0165 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Selenium, potentially dissolvd
89% over limit
Discharged 0.017 mg/L against a permitted limit of 0.009 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Selenium, potentially dissolvd
96% over limit
Discharged 0.009 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Selenium, potentially dissolvd
52% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 15, 2026 (6 days ago)