FRS Facility Detail Report


ONEOK ROCKIES MIDSTREAM, L.L.C.-GRASSLANDS GAS PLANT

EPA Registry Id: 110010349587
36-T148-R105
MCKENZIE, ND 58572


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:
ICIS-AIR (AIR)
ONEOK ROCKIES MIDSTREAM, L.L.C. - GRASSLANDS GAS PLANT ND0000003805300023 AIR MAJOR ICIS 12/22/2020
AIR FACILITY SYSTEM
ONEOK ROCKIES MIDSTREAM, L.L.C. (GGP) 3805300023 AIR MAJOR (OPERATING) AIRS/AFS 12/17/2012
INTEGRATED COMPLIANCE INFORMATION SYSTEM BEAR PAW ENERGY, INC.: MCK 51848 ENFORCEMENT/COMPLIANCE ACTIVITY ICIS 06/24/2002

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
AIR
1311
CRUDE PETROLEUM AND NATURAL GAS

AIRS/AFS
1311
CRUDE PETROLEUM AND NATURAL GAS

Facility Codes and Flags

EPA Region: 08
Duns Number:
Congressional District Number: 01
Legislative District Number:
HUC Code/Watershed: 10130103 / APPLE
US Mexico Border Indicator:
Federal Facility: NO
Tribal Land: NO

Alternative Names

Alternative Name Source of Data
BEAR PAW ENERGY, INC.: MCK ICIS
ONEOK ROCKIES MIDSTREAM, L.L.C. (GGP) AIRS/AFS
BEAR PAW ENERGY, INC.: GRASSLANDS PLANT AIRS/AFS

Organizations

No Organizations returned.

National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
AIRS/AFS 211111 CRUDE PETROLEUM AND NATURAL GAS EXTRACTION.
AIR 211130

AIR 211111 CRUDE PETROLEUM AND NATURAL GAS EXTRACTION.

Facility Mailing Addresses

No Facility Mailing Addresses returned.

Contacts

Affiliation Type Full Name Office Phone Information System Mailing Address
COMPLIANCE CONTACT
WILLIAM W. GRYGAR II
5015215565
AIR


UNKNOWN CONTACT
WILLIAM W. GRYGAR II
5015215565
AIRS/AFS


PRIMARY CONTACT
JENNIFER ELLETTE
9187321467
AIR


PRIMARY FACILITY SITE CONTACT
DEBORAH PERRY-CHAMBERS
9185887530
AIR


UNKNOWN CONTACT
WILLIAM W. GRYGAR II
5015215565
AIR


PRIMARY CONTACT
LARRY D TILLSON
9185915138
AIR


COMPLIANCE CONTACT
WILLIAM W. GRYGAR II
5015215565
AIRS/AFS


PRIMARY CONTACT
KIMBERLY RUDNINGEN


AIR


PRIMARY CONTACT
KALE HANNER
9187321477
AIR


Query executed on: OCT-14-2025