MISSOURI AND NORTHERN ARKANSAS RAILROAD
NPDES ID: MO0139947
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: 24 effluent violations, 2 single-event violations.
Violations
May 31, 2026
Chlorine, total residual
62% over limit
Discharged 0.21000001 mg/L against a permitted limit of 0.13000001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
62% over limit
Discharged 0.21000001 mg/L against a permitted limit of 0.13000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil and grease [soxhlet extr.] tot.
60% over limit
Discharged 16 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
53% over limit
Discharged 0.763 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil and grease [soxhlet extr.] tot.
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
53% over limit
Discharged 0.763 mg/L against a permitted limit of 0.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)