FRS Facility Detail Report


ROCKY MOUNTAIN POWER - HARDIN GENERATING STATION

EPA Registry Id: 110038363623
643 INDUSTRIAL PARK RD
HARDIN, MT 59034-9716


The facility locations displayed
come from the FRS Spatial
Coordinates tables. They are the
best representative locations for
the displayed facilities based on
the accuracy of the collection
method and quality assurance
checks performed against each
location. The North American
Datum of 1983 is used to display
all coordinates.

Environmental Interests

Information System System Facility Name Information System Id/Report Link Environmental Interest Type Data Source Last Updated Date Supplemental Environmental Interests:
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
HARDIN GENERATION STATION MTR000457 STORM WATER INDUSTRIAL ICIS

EMISSIONS & GENERATION RESOURCE INTEGRATED DATABASE
HARDIN GENERATING STATION 55749 ELECTRIC POWER GENERATOR (COAL BASED) EGRID 02/24/2020
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
ROCKY MOUNTAIN POWER, LLC MTR000735 STORM WATER INDUSTRIAL ICIS

COMPLIANCE AND EMISSIONS DATA REPORTING INTERFACE
HARDIN GENERATING STATION CEDRI10004148 COMPLIANCE AND EMISSIONS REPORTING CEDRI

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
ROCKY MOUNTAIN POWER MTG770017 ICIS-NPDES NON-MAJOR ICIS

RESOURCE CONSERVATION AND RECOVERY ACT INFORMATION SYSTEM
HARDIN GENERATING FAC ROCKY MTN POWER MTR000202481 VSQG (Y) RCRAINFO

EMISSION INVENTORY SYSTEM (EIS)
ROCKY MOUNTAIN POWER 7851511 HAZARDOUS AND CRITERIA AIR POLLUTANT MAJOR EIS 11/26/2024
AIR FACILITY SYSTEM
ROCKY MOUNTAIN POWER 3000300018 AIR MAJOR (OPERATING) AIRS/AFS 08/28/2014
AIR QUALITY SYSTEM
HARDIN POWER PLANT #1 92147 AIR MONITORING SITE AQS SITES TRANSACTION

MONTANA - CONSOLIDATED ENVIRONMENTAL DATA ACQUISITION AND RETRIEVAL SYSTEM
ROCKY MOUNTAIN POWER 123750 STATE MASTER MT-CEDARS
FITS-138977
AIR PROGRAM
FITS-159067
AIR PROGRAM
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
ROCKY MOUNTAIN POWER LLC / COLORADO ENERGY MGMT - HARDIN GENERATING STATION MTR101338 ICIS-NPDES NON-MAJOR ICIS 06/28/2007
ICIS-AIR (AIR)
ROCKY MOUNTAIN POWER MT0000003000300018 AIR MAJOR ICIS 05/18/2015
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
ROCKY MOUNTAIN POWER LLC / COLORADO ENERGY MGMT - HARDIN GENERATING STATION MTR101338 STORM WATER CONSTRUCTION ICIS 06/28/2007
TOXICS RELEASE INVENTORY SYSTEM
HARDIN GENERATING STATION 59034HRDNGSUGAR TRI REPORTER TRIS 06/21/2024
MONTANA - CONSOLIDATED ENVIRONMENTAL DATA ACQUISITION AND RETRIEVAL SYSTEM
ROCKY MOUNTAIN POWER 146737 STATE MASTER MT-CEDARS
FITS-153148
SOLID WASTE PROGRAM
ENERGY INFORMATION ADMINISTRATION-860 (EIA-860) DATABASE
HARDIN GENERATOR PROJECT 55749 ELECTRIC GENERATOR EIA-860 10/06/2020
CLEAN AIR MARKETS DIVISION (CAMD) BUSINESS SYSTEMS
HARDIN GENERATING STATION 55749 AIR PROGRAM CAMDBS 02/09/2016
OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION INFORMATION SYSTEM
ROCKY MOUNTAIN POWER 343236410 OSHA ESTABLISHMENT OSHA-OIS 09/12/2018
AIR QUALITY SYSTEM
HARDIN POWER PLANT #2 92146 AIR MONITORING SITE AQS SITES TRANSACTION

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
ROCKY MOUNTAIN POWER, LLC MTR000735 ICIS-NPDES MINOR ICIS

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
HARDIN GENERATION STATION MTR000457 ICIS-NPDES NON-MAJOR ICIS

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
NPDES
1541
GENERAL CONTRACTORS-INDUSTRIAL BUILDINGS AND WAREHOUSES

AIRS/AFS
4911
ELECTRIC SERVICES

NPDES
4911
ELECTRIC SERVICES

MT-CEDARS
4911
ELECTRIC SERVICES

AIR
4911
ELECTRIC SERVICES

NPDES
4911
ELECTRIC SERVICES

NPDES
4911
ELECTRIC SERVICES

NPDES
4911
ELECTRIC SERVICES

Facility Codes and Flags

EPA Region: 08
Duns Number: 148627446
Congressional District Number: 01
Legislative District Number:
HUC Code/Watershed: 10080015 / LOWER BIGHORN
US Mexico Border Indicator:
Federal Facility: NO
Tribal Land: NO

Alternative Names

Alternative Name Source of Data
HARDIN CAMDBS
HARDIN POWER PLANT #1 AIRS/AQS
HARDIN GENERATOR PROJECT EIS
ROCKY MOUNTAIN POWER AIR
ROCKY MOUNTAIN POWER LLC / COLORADO ENERGY MGMT - HARDIN GENERATING STATION NPDES
HARDIN POWER PLANT #2 AIRS/AQS
HARDIN GENERATING FAC ROCKY MTN POWER RCRAINFO
HARDIN GENERATION STATION NPDES

Organizations

Affiliation Type Name DUNS Number Information System Mailing Address
REGULATORY CONTACT
ROCKY MOUNTAIN POWER 148627446
MT-CEDARS
View
TRANSMISSION OR DISTRIBUTION SYSTEM OWNER
NORTHWESTERN ENERGY LLC - (MT)
EIA-860


OWNER
CENTENNIAL ENERGY RESOURCES
NPDES
View
MAILING ADDRESS
ROCKY MOUNTAIN POWER LLC
NPDES


MAILING ADDRESS
ROCKY MOUNTAIN POWER
NPDES
View
REGULATORY CONTACT
ROCKY MOUNTAIN POWER 148627446
MT-CEDARS
View
PERMITEE
ROCKY MOUNTAIN POWER
AIR
View
REGULATORY CONTACT
ROCKY MOUNTAIN POWER 148627446
MT-CEDARS
View
OPERATOR
HEOROT POWER MANAGEMENT
EGRID


MAILING ADDRESS
COLORADO ENERGY MANAGEMENT LLC
NPDES
View
MAILING ADDRESS
ROCKY MOUNTAIN POWER LLC
NPDES
View
PARENT COMPANY
HEOROT POWER MANAGEMENT
EIA-860
View
OWNER
ROCKY MOUNTAIN POWER LLC
CAMDBS


PARENT COMPANY
ROCKY MOUNTAIN POWER LLC
TRIS


PARENT COMPANY
NORTHWESTERN ENERGY LLC - (MT)
EGRID


MAILING ADDRESS
ROCKY MOUNTAIN POWER LLC
NPDES


REGULATORY CONTACT
ROCKY MOUNTAIN POWER 148627446
MT-CEDARS
View
MAILING ADDRESS
CENTENNIAL ENERGY RESOURCES
NPDES
View
OPERATOR
ROCKY MOUNTAIN POWER INC
RCRAINFO
View
MAILING ADDRESS
ROCKY MOUNTAIN POWER
NPDES
View
MAILING ADDRESS
ROCKY MOUNTAIN POWER LLC / COLORADO ENERGY MANAGEMENT ATTN STEVE FINLEY
NPDES
View
OWNER/OPERATOR
NORTHWESTERN ENERGY LLC - (MT)
EIA-860


PARENT COMPANY
ROCKY MOUNTAIN POWER
EIS


MAILING ADDRESS
ROCKY MOUNTAIN POWER LLC / COLORADO ENERGY MANAGEMENT ATTN STEVE FINLEY
NPDES


REGULATORY CONTACT
ROCKY MOUNTAIN POWER 148627446
MT-CEDARS
View
OPERATOR
COLORADO ENERGY MANAGEMENT LLC
CAMDBS


OWNER
ROCKY MOUNTAIN POWER
RCRAINFO
View

National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
AIR 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
MT-CEDARS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
OSHA-OIS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
AIRS/AFS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
EIA-860 22

TRIS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
RCRAINFO 22111 ELECTRIC POWER GENERATION
EIS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.
CAMDBS 221112 FOSSIL FUEL ELECTRIC POWER GENERATION.

Facility Mailing Addresses

Affiliation Type Delivery Point City Name State Postal Code Information System
REGULATORY CONTACT P.O. BOX 5558 BISMARCK ND 58506 MT-CEDARS
REGULATORY CONTACT SUGAR FACTORY RD HARDIN MT 59034 RCRAINFO
REGULATORY CONTACT ROUTE 1 BOX 1144A HARDIN MT 59034 MT-CEDARS
FACILITY MAILING ADDRESS P.O. BOX 5650 BISMARK MT 585065650 AIRS/AFS
PARENT COMPANY ROUTE 1 BOX 1144ASUGAR FACTORY HARDIN MT EIA-860
FACILITY MAILING ADDRESS SUGAR FACTORY RD HARDIN MT 59034 RCRAINFO
REGULATORY CONTACT SARPY CREEK RD HARDIN MT 59034 MT-CEDARS
OWNER 400 N 4TH STREET BISMARK ND 58501 RCRAINFO
MAILING ADDRESS ROUTE 1 BOX 1144A HARDIN MT 59034 NPDES
MAILING ADDRESS 2575 PARK LANE SUITE 200 LAFAYETTE CO 80026 NPDES
UNKNOWN CONTACT 2575 PARK LANE LAFAYETTE CO 80026 CAMDBS
MAILING ADDRESS RT 1, BOX 1144A HARDIN MT 59034 TRIS
FACILITY SITE CONTACT PO BOX 17356 IRVINE CA 92623 NPDES
MAILING ADDRESS ROUTE 1 BOX 1144A HARDIN MT 59034 MT-CEDARS
FACILITY MAILING ADDRESS P.O. BOX 5650 BISMARK MT 585065650 AIR
REGULATORY CONTACT 2575 PARK LANE LAFAYETTE CO 80026 CAMDBS
OWNER 400 NORTH FOURTH STREET BISMARK ND 58501 NPDES
MAILING ADDRESS PO BOX 5650 BISMARCK ND 58506-5650 NPDES
REGULATORY CONTACT RT 1 BOX 1144A HARDIN MT 59034 MT-CEDARS
PRIMARY FACILITY SITE CONTACT 103 NORTH WASHINGTON STREET EASTON MD 21601 CAMDBS
MAILING ADDRESS 103 NORTH WASHINGTON STREET EASTON MD 21601 NPDES
MAILING ADDRESS 2575 PARK LN STE 200 LAFAYETTE CO 80026 NPDES
MAILING ADDRESS SARPY CREEK RD HARDIN MT 59034 MT-CEDARS
PERMITEE RT 1 BOX 1144A HARDIN MT 59034 AIR
PERMIT CONTACT 2575 PARK LANE LAFAYETTE CO 80026 CAMDBS
MAILING ADDRESS 400 NORTH FOURTH STREET BISMARCK ND 585014092 NPDES
REGULATORY CONTACT P.O. BOX 1539 HELENA MT 59873 MT-CEDARS
UNKNOWN CONTACT 1600 W TACOMA STREET BROKEN ARROW OK 74012 CAMDBS
OPERATOR SUGAR FACTORY RD HARDIN MT 59034 RCRAINFO

Contacts

Affiliation Type Full Name Office Phone Information System Mailing Address
COMPLIANCE CONTACT
PAUL GATZEMEIER


AIR


UNKNOWN CONTACT
PAUL GATZEMEIER


AIR


REGULATORY CONTACT
DANIEL DUNLAP
3036075600
CAMDBS
View
PRIMARY FACILITY SITE CONTACT
DOUGLAS HALLIDAY
4107709500
CAMDBS


UNKNOWN CONTACT
RICHARD OLSEN
4107709500
CAMDBS
View
SITE CONTACT
KYLE MCCORMACK
3237753873
NPDES


COGNIZANT OFFICIAL
GARY ARNESON
4062470004
NPDES


UNKNOWN CONTACT
PAUL GATZEMEIER


AIRS/AFS


UNKNOWN CONTACT
THOMAS GRAHAM
9183078865X4170
CAMDBS
View
PRIMARY FACILITY SITE CONTACT
DOUGLAS HALLIDAY
4107709500
CAMDBS
View
UNKNOWN CONTACT
DANIEL DUNLAP
3036075600
CAMDBS
View
UNKNOWN CONTACT
RICHARD OLSEN
4107709500
CAMDBS


TECHNICAL CONTACT
KEVIN CALLOWAY
4066389140
TRIS


REGULATORY CONTACT
JIM D HUNT
4066653067
RCRAINFO
View
FACILITY SITE CONTACT
GARY ARNESON
4066389140
NPDES


PUBLIC CONTACT
KEVIN CALLOWAY
4066389140
TRIS


PERMIT CONTACT
DANIEL DUNLAP
3036075600
CAMDBS
View
REGULATORY CONTACT
JIM D HUNT
406-665-3067
RCRAINFO


COMPLIANCE CONTACT
PAUL GATZEMEIER


AIRS/AFS


PUBLIC CONTACT
KEVIN CALLOWAY
4066389140
TRIS


FACILITY SITE CONTACT
GARY ARNESON
4066389140
NPDES
View

Query executed on: OCT-14-2025


Additional information for CERCLIS or TRI sites:

This information resource is not maintained, managed, or owned by the Environmental Protection Agency (EPA) or the Envirofacts Support Team. Neither the EPA nor the Envirofacts Support Team is responsible for their content or site operation. The Envirofacts Warehouse provides this reference only as a convenience to our Internet users.

  • National Library of Medicine (NLM) TOXMAP