COW CREEK PROJECT (JAN. 2021)
NPDES ID: WY0096679
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
Violations
December 31, 2025
pH
0% over limit
Discharged 0 SU against a permitted limit of 6.5 SU (INST MIN)
DMR, Limited - Overdue
Specific conductance
0% over limit
Discharged 0 umho/cm against a permitted limit of 7500 umho/cm (DAILY MN)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Calcium, dissolved [as Ca]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Sodium, dissolved [as Na]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Sodium, dissolved [as Na]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Alkalinity, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Iron, dissolved [as Fe]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Sulfate
0% over limit
Discharged 0 mg/L against a permitted limit of 3000 mg/L (DAILY MX)
DMR, Limited - Overdue
Manganese, dissolved [as Mn]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.68000003 mg/L (DAILY MX)
DMR, Limited - Overdue
Iron, dissolved [as Fe]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Fluoride, dissolved [as F]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Sodium adsorption ratio
0% over limit
Discharged 0 Ratio against a permitted limit of 0 Ratio (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Sulfate
0% over limit
Discharged 0 mg/L against a permitted limit of 3000 mg/L (DAILY MX)
DMR, Limited - Overdue
Manganese, dissolved [as Mn]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.68000003 mg/L (DAILY MX)
DMR, Limited - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Barium, total [as Ba]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.00000009 mg/L (DAILY MX)
DMR, Limited - Overdue
Alkalinity, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Magnesium, dissolved [as Mg]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Sodium adsorption ratio
0% over limit
Discharged 0 Ratio against a permitted limit of 0 Ratio (DAILY MX)
DMR, Monitor Only - Overdue
Specific conductance
0% over limit
Discharged 0 umho/cm against a permitted limit of 7500 umho/cm (DAILY MN)
DMR, Limited - Overdue
Calcium, dissolved [as Ca]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Barium, total [as Ba]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.00000009 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6.5 SU (INST MIN)
DMR, Limited - Overdue
Fluoride, dissolved [as F]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Bicarbonate as [CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Magnesium, dissolved [as Mg]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Bicarbonate as [CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
November 30, 2025
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (INST MAX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Manganese, dissolved [as Mn]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (MO TOTAL)
DMR, Monitor Only - Overdue
Barium, total [as Ba]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Calcium, dissolved [as Ca]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Sodium adsorption ratio
0% over limit
Discharged 0 Ratio against a permitted limit of 0 Ratio (DAILY MX)
DMR, Monitor Only - Overdue
Specific conductance
0% over limit
Discharged 0 umho/cm against a permitted limit of 0 umho/cm (DAILY MX)
DMR, Monitor Only - Overdue
Alkalinity, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Sulfate
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Magnesium, dissolved [as Mg]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Fluoride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Sodium, dissolved [as Na]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Iron, total [as Fe]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Bicarbonate as [CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
October 31, 2025
Sodium, dissolved [as Na]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Specific conductance
0% over limit
Discharged 0 umho/cm against a permitted limit of 0 umho/cm (DAILY MX)
DMR, Monitor Only - Overdue
Sodium adsorption ratio
0% over limit
Discharged 0 Ratio against a permitted limit of 0 Ratio (DAILY MX)
DMR, Monitor Only - Overdue
Calcium, dissolved [as Ca]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Barium, total [as Ba]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Alkalinity, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Sulfate
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Manganese, dissolved [as Mn]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (INST MAX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Bicarbonate as [CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Magnesium, dissolved [as Mg]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Fluoride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (MO TOTAL)
DMR, Monitor Only - Overdue
Iron, total [as Fe]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
September 30, 2025
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
August 31, 2025
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
July 31, 2025
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0 gal against a permitted limit of 1.8e-7 gal (MO TOTAL)
DMR, Limited - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 907 kg/d (DAILY MX)
DMR, Limited - Overdue
Duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (MO TOTAL)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)