PRECOAT MEZZANINE LLC, DBA PRECOAT METALS
NPDES ID: MSP091052
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Copper, total recoverable
8% over limit
Discharged 0.0012258 kg/d against a permitted limit of 0.001135 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
76% over limit
Discharged 0.0019976 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Cyanide, total [as CN]
336% over limit
Discharged 0.0049486 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
990% over limit
Discharged 0.0049486 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
180% over limit
Discharged 0.003178 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
60% over limit
Discharged 0.001816 kg/d against a permitted limit of 0.001135 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Cyanide, total [as CN]
100% over limit
Discharged 0.000908 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Cyanide, total [as CN]
100% over limit
Discharged 0.000908 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Cyanide, total [as CN]
700% over limit
Discharged 0.00908 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
1900% over limit
Discharged 0.00908 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Cyanide, total [as CN]
44% over limit
Discharged 0.0016344 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
260% over limit
Discharged 0.0016344 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Cyanide, total [as CN]
696% over limit
Discharged 0.0090346 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
1890% over limit
Discharged 0.0090346 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Cyanide, total [as CN]
10630% over limit
Discharged 0.0487142 kg/d against a permitted limit of 0.000454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
4192% over limit
Discharged 0.0487142 kg/d against a permitted limit of 0.001135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Temperature, water deg. fahrenheit
7% over limit
Discharged 123 deg F against a permitted limit of 115 deg F (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)