Facility Profile

HARDIN GENERATING STATION
ROCKY MOUNTAIN POWER LLC
Facility Summary
643 INDUSTRIAL PARK RD, HARDIN, MT, 59034 (BIG HORN)
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:
18-month enforcement and compliance history summary for this facility:
Facility: Violation Identified
Clean Air Act: Violation w/in 1 Year
Clean Water Act: Not Applicable
Resource Conservation and Recovery Act : No Violation Identified
Total Penalties: $0
Last Penalty: 01/16/2013
2022 Toxic Substance Releases
Substance Total
(lbs)
Air
(lbs)
Water
(lbs)
Land
(lbs)
UnInj
(lbs)
Offsite
(lbs)
BARIUM COMPOUNDS
CASRN: N040
98,631.60 4,931.70 0.00 0.00 0.00 93,699.90
Substance Total Air Water Land UnInj Offsite
MANGANESE
CASRN: 7439-96-5
40,076.80 2,194.70 0.00 0.00 0.00 37,882.10
This substance is a developmental or reproductive toxin. (Source: Plastichem Project)
This substance is a mutagen. (Source: Plastichem Project)
This substance is an endocrine disruptor. (Source: TEDX (The Endocrine Disruption eXchange))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
SULFURIC ACID
CASRN: 7664-93-9
29,851.00 29,851.00 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
COPPER
CASRN: 7440-50-8
2,953.31 147.71 0.00 0.00 0.00 2,805.60
Substance Total Air Water Land UnInj Offsite
ZINC COMPOUNDS
CASRN: N982
2,799.10 140.00 0.00 0.00 0.00 2,659.10
Substance Total Air Water Land UnInj Offsite
LEAD COMPOUNDS
CASRN: N420
1,774.00 252.30 0.00 0.00 0.00 1,521.70
Substance Total Air Water Land UnInj Offsite
HYDROFLUORIC ACID
CASRN: 7664-39-3
355.40 355.40 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
HYDROCHLORIC ACID
CASRN: 7647-01-0
355.40 355.40 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
MERCURY COMPOUNDS
CASRN: N458
14.20 2.09 0.00 0.00 0.00 12.11
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
0.63 0.63 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