FRS Facility Detail Report


MAINLINE #4

EPA Registry Id: 110013327961
40 EAST BROADWAY STREET
BUTTE, MT 59701-9350


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:
EMISSION INVENTORY SYSTEM (EIS)
MAINLINE #4 7602811 AIR EMISSIONS CLASSIFICATION UNKNOWN EIS 08/16/2024
MONTANA - CONSOLIDATED ENVIRONMENTAL DATA ACQUISITION AND RETRIEVAL SYSTEM
MAINLINE #4 123241 STATE MASTER MT-CEDARS
FITS-138431
AIR PROGRAM
FITS-169166
HAZARDOUS WASTE PROGRAM
AIR FACILITY SYSTEM
MAINLINE #4 3004900015 AIR SYNTHETIC MINOR (PERMANENTLY CLOSED) AIRS/AFS 09/15/2014

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
MT-CEDARS
4922
NATURAL GAS TRANSMISSION

AIRS/AFS
4922
NATURAL GAS TRANSMISSION

Facility Codes and Flags

EPA Region: 08
Duns Number:
Congressional District Number: 01
Legislative District Number:
HUC Code/Watershed: 17010201 / UPPER CLARK FORK
US Mexico Border Indicator:
Federal Facility: NO
Tribal Land: NO

Alternative Names

Alternative Name Source of Data
NORTHWESTERN ENGERGY - MAIN LINE #4 AIRS/AFS
MONTANA POWER COMPANY - MAINLINE #4 MT-CEDARS

Organizations

Affiliation Type Name DUNS Number Information System Mailing Address
REGULATORY CONTACT
NORTHWESTERN CORPORATION
MT-CEDARS
View
REGULATORY CONTACT
NORTHWESTERN CORP GENERAL OFFICES
MT-CEDARS
View
REGULATORY CONTACT
NORTHWESTERN CORPORATION
MT-CEDARS


REGULATORY CONTACT
NORTHWESTERN CORPORATION
MT-CEDARS
View
REGULATORY CONTACT
NORTHWESTERN CORPORATION
MT-CEDARS
View

National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
MT-CEDARS 221110

EIS 486210 PIPELINE TRANSPORTATION OF NATURAL GAS.
AIRS/AFS 486210 PIPELINE TRANSPORTATION OF NATURAL GAS.

Facility Mailing Addresses

Affiliation Type Delivery Point City Name State Postal Code Information System
FACILITY MAILING ADDRESS 40 EAST BROADWAY BUTTE MT 59701 AIRS/AFS
REGULATORY CONTACT 40 EAST BROADWAY BUTTE MT 59701 MT-CEDARS
REGULATORY CONTACT 40 E BROADWAY ST BUTTE MT 59701 MT-CEDARS
MAILING ADDRESS 40 E BROADWAY ST BUTTE MT 59701 MT-CEDARS
REGULATORY CONTACT 40 E BROADWAY BUTTE MT 59701 MT-CEDARS

Contacts

Affiliation Type Full Name Office Phone Information System Mailing Address
UNKNOWN CONTACT
RICK WALSH
4064973917
AIRS/AFS


COMPLIANCE CONTACT
RICK WALSH
4064973917
AIRS/AFS


Query executed on: OCT-15-2025