Facility Profile

WESTON POWER PLANT
WEC ENERGY GROUP
Facility Summary
2491 OLD HIGHWAY 51, MOSINEE, WI, 54455 (MARATHON)
In 2022, this facility made toxic releases of:
- Concern to the air
- Onsite air release of Clean Air Act chemicals
- Onsite release Persistent bioaccumulative toxic substance (PBTs)
- Onsite release of known carcinogens
This facility reported the following greenhouse gas releases for 2022:
- 1,096.00 metric tons of Methane (CH4)
- 20,775.67 metric tons of Nitrous Oxide (N2O)
- 4,164,852.80 metric tons of Carbon Dioxide (CO2)
18-month enforcement and compliance history summary for this facility:
Facility: Violation Identified
Clean Air Act: Violation w/in 1 Year
Clean Water Act: Terminated Permit
Resource Conservation and Recovery Act : No Violation Identified
Total Penalties: $0
Last Penalty: 08/19/2013
2022 Toxic Substance Releases
Substance Total
(lbs)
Air
(lbs)
Water
(lbs)
Land
(lbs)
UnInj
(lbs)
Offsite
(lbs)
BARIUM COMPOUNDS
CASRN: N040
910,582.00 1,459.00 829.00 302,053.00 0.00 606,241.00
Substance Total Air Water Land UnInj Offsite
MANGANESE COMPOUNDS
CASRN: N450
30,910.00 168.00 242.00 10,146.00 0.00 20,354.00
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
VANADIUM COMPOUNDS
CASRN: N770
29,075.00 100.00 0.00 9,638.00 0.00 19,337.00
Substance Total Air Water Land UnInj Offsite
COPPER COMPOUNDS
CASRN: N100
25,917.00 124.00 34.00 8,557.00 0.00 17,202.00
Substance Total Air Water Land UnInj Offsite
ZINC COMPOUNDS
CASRN: N982
17,294.00 378.00 0.00 5,616.00 0.00 11,300.00
Substance Total Air Water Land UnInj Offsite
AMMONIA
CASRN: 7664-41-7
6,492.00 6,492.00 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
LEAD COMPOUNDS
CASRN: N420
5,841.30 26.40 2.00 1,931.20 0.00 3,881.70
Substance Total Air Water Land UnInj Offsite
SULFURIC ACID
CASRN: 7664-93-9
1,986.00 1,986.00 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
HYDROCHLORIC ACID
CASRN: 7647-01-0
1,524.00 1,524.00 0.00 0.00 0.00 0.00
This substance is a developmental or reproductive toxin. (Source: Plastichem Project)
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
HYDROFLUORIC ACID
CASRN: 7664-39-3
1,190.00 1,190.00 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
MERCURY COMPOUNDS
CASRN: N458
127.00 8.40 0.00 39.40 0.00 79.20
This is a persistent bioaccumulative toxic substance (PBTs). (Source: U.S. EPA Toxics Release Inventory (TRI))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
POLYCYCLIC AROMATIC COMPOUNDS (TRI CATEGORY)
CASRN: N590
9.90 8.10 0.00 0.60 0.00 1.20
This is a persistent bioaccumulative toxic substance (PBTs). (Source: U.S. EPA Toxics Release Inventory (TRI))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
DIOXIN AND DIOXIN-LIKE COMPOUNDS (TRI CATEGORY)
CASRN: N150
0.85 0.85 0.00 0.00 0.00 0.00
This is a persistent bioaccumulative toxic substance (PBTs). (Source: U.S. EPA Toxics Release Inventory (TRI))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
BENZO[G,H,I]PERYLENE
CASRN: 191-24-2
0.10 0.10 0.00 0.00 0.00 0.00
This is a persistent bioaccumulative toxic substance (PBTs). (Source: U.S. EPA Toxics Release Inventory (TRI))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite