MARKWEST LIBERTY GAS GATHERING CO LLC
dba MARKWEST ENERGY PARTNERS
WASHINGTON, PA
05/27/2014
1
Power Units
1
Drivers
Current
as of today
Active · 1 power units · 1 drivers · Washington, PA
2025
Jul 11, 2025
MCS-150 biennial update filed
Reported mileage: 964,487 (2022)
Reported power units: 1
Reported drivers: 1
Reported trailers: 5
2024
Aug 5, 2024
MCS-150 biennial update filed
Reported mileage: 964,487 (2022)
Reported power units: 5 → 1
Reported drivers: 5 → 1
2023
Dec 5, 2023
MCS-150 biennial update filed
Reported mileage: 964,487 (2022)
Reported power units: 45 → 5
Reported drivers: 45 → 5
~Mar 2023
Driver count changed 45 → 44
2022
Feb 15, 2022
MCS-150 biennial update filed
Reported mileage: 1,310,000 (2020)
Reported power units: 75 → 45
Reported drivers: 70 → 45
2021
Jul 12, 2021
MCS-150 biennial update filed
Reported mileage: 1,310,000 (2020)
Reported power units: 75
Reported drivers: 70
Mar 10, 2021
MCS-150 biennial update filed
Reported mileage: 1,310,000 (2020)
Reported power units: 1 → 75
Reported drivers: 1 → 70
2014
May 27, 2014
DOT registered
Company registered with the FMCSA.
May 27, 2014
MCS-150 biennial update filed
Reported power units: 1
Reported drivers: 1