TRIDENT LOGISTICS CENTER
NPDES ID: MAG912185
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: 8 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
766% over limit
Discharged 0.303 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
30% over limit
Discharged 0.303 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
486% over limit
Discharged 0.41000002 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
12% over limit
Discharged 0.261 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
380% over limit
Discharged 0.168 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
1370% over limit
Discharged 0.29400001 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
67% over limit
Discharged 0.39 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
114% over limit
Discharged 0.15000001 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1014% over limit
Discharged 0.39 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
131% over limit
Discharged 0.03 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
650% over limit
Discharged 0.15000001 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Cyanide, total [as CN]
2500% over limit
Discharged 0.026 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
680% over limit
Discharged 0.273 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
2500% over limit
Discharged 0.026 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
350% over limit
Discharged 0.09 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
29% over limit
Discharged 0.09 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Enterococci
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
17% over limit
Discharged 0.273 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Chlorine, total residual
131% over limit
Discharged 0.03 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
325% over limit
Discharged 0.991 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
14% over limit
Discharged 0.08 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
300% over limit
Discharged 0.08 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2731% over limit
Discharged 0.991 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Enterococci
135% over limit
Discharged 82.3 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
54% over limit
Discharged 0.02 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
61% over limit
Discharged 0.376 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
974% over limit
Discharged 0.376 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
1111% over limit
Discharged 0.424 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
113% over limit
Discharged 0.496 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Enterococci
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
595% over limit
Discharged 1.62 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
tert-Butyl alcohol [TBA]
458% over limit
Discharged 0.67000003 mg/L against a permitted limit of 0.12000001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
4529% over limit
Discharged 1.62 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Cyanide, total [as CN]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Overdue
tert-Butyl alcohol [TBA]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.12000001 mg/L (DAILY MX)
DMR, Limited - Overdue
Iron, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 5.00000024 mg/L (DAILY MX)
DMR, Limited - Overdue
Indeno[1,2,3-cd]pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.09513743 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Overdue
Benzo[b]fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Cyanide, total [as CN]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Phenols
0% over limit
Discharged 0 mg/L against a permitted limit of 1.08000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Naphthalene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved [TDS]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Phenanthrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Benzo[b]fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Overdue
Benzo[ghi]perylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (DAILY MX)
DMR, Monitor Only - Overdue
Enterococci
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Overdue
Benzo[a]anthracene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0001 mg/L (DAILY MX)
DMR, Limited - Overdue
Turbidity
0% over limit
Discharged 0 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00851735 mg/L (MO AVG)
DMR, Limited - Overdue
Fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Overdue
Methyl tert-butyl ether [MTBE]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Overdue
Fluorene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Acenaphthylene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Methyl tert-butyl ether [MTBE]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Overdue
Total Group I Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Nickel, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.07474748 mg/L (DAILY MX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (MO AVG)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Overdue
Acenaphthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.16000001 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.08562368 mg/L (MO AVG)
DMR, Limited - Overdue
Benzo[a]anthracene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Overdue
Dibenz[a,h]anthracene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Overdue
Indeno[1,2,3-cd]pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Overdue
Chrysene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00013 mg/L (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.069 mg/L (DAILY MX)
DMR, Limited - Overdue
Total Group II Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Chloride, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Benzo[a]pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
BTEX
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Benzene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.005 mg/L (DAILY MX)
DMR, Limited - Overdue
Benzo[k]fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nickel, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00828283 mg/L (MO AVG)
DMR, Limited - Overdue
Pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.03 mg/L (MO AVG)
DMR, Limited - Overdue
Fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.036 mg/L (MO AVG)
DMR, Limited - Overdue
Chrysene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0001 mg/L (DAILY MX)
DMR, Limited - Overdue
Benzo[a]pyrene
0% over limit
Discharged 0 mg/L against a permitted limit of 1.3e-7 mg/L (MO AVG)
DMR, Limited - Overdue
Anthracene
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Naphthalene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.02 mg/L (DAILY MX)
DMR, Limited - Overdue
Benzo[k]fluoranthene
0% over limit
Discharged 0 mg/L against a permitted limit of 0.000013 mg/L (MO AVG)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
June 30, 2025
Nitrogen, ammonia total [as N]
4429% over limit
Discharged 1.585 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
285% over limit
Discharged 0.05 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
591% over limit
Discharged 1.61 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
35% over limit
Discharged 0.027 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Methyl tert-butyl ether [MTBE]
20% over limit
Discharged 0.024 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
515% over limit
Discharged 0.08 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
397% over limit
Discharged 0.174 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
3310% over limit
Discharged 1.1935 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
630% over limit
Discharged 1.7 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
1214% over limit
Discharged 0.46 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
30% over limit
Discharged 0.13 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
97% over limit
Discharged 0.46 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
131% over limit
Discharged 0.03 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
tert-Butyl alcohol [TBA]
92% over limit
Discharged 0.23000001 mg/L against a permitted limit of 0.12000001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
270% over limit
Discharged 0.862 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
63% over limit
Discharged 0.163 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1540% over limit
Discharged 0.574 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 10.44 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
285% over limit
Discharged 0.05 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
191% over limit
Discharged 0.291 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.67 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
479% over limit
Discharged 1.35 mg/L against a permitted limit of 0.233 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1809% over limit
Discharged 0.668 mg/L against a permitted limit of 0.035 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)