Carrier profile · USDOT 4013855 · MC-1512057 · Updated Sep 6, 2026
G4 Tank Lines LLC
56 power unitsavg 12.7 yrMulti-region · 8 statesDENVER, CO100/100
CARRIER ACTIVEMC-1512057 ACTIVEHAZMAT
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 610 SOUTH LIPAN STREET, DENVER, CO, 80223
- Operation
- Interstate· Hazmat
Contact
- Phone
- (720) 210-8794
- Web domain
- g4tanklines.com
Registration
- Officer
- Guillermo Grossi-Roffi
- USDOT / docket
- 4013855 · MC-1512057
- First registered
- Jan 18, 2023
- Last MCS-150
- Apr 16, 2026 · 1,871,200 mi (2025)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.00
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.