G4 TANK LINES LLC

DOT# 4013855 MC# 1512057CARRIER

ACTIVE

Trust Score

35 / 100

F Critical

Components

Compliance · 40% 60

Safety · 35% 96

Insurance · 25% 25

Authority revocation is currently pending No active liability (BIPD) insurance on file No active cargo insurance on file

Confidence: high · based on FMCSA safety, insurance & authority data How is this calculated?

Overview

Address

610 SOUTH LIPAN STREET

DENVER, CO 80223

View on Google Maps ↗

Contact

Phone: (720) 210-8794

Email: ggrossi@g4tanklines.com

Company Officers

GUILLERMO GROSSI-ROFFI

Business Info

D&B #: 0

HazMat: HazMat Carrier

Fleet

228

Power Units

111

Drivers

Equipment Breakdown

Owned Tractors114

Authority

Status: ACTIVE

FMCSA add date: Jan 18, 2023

Common authority: Jun 14, 2023

Common Revocation Pending

Authority History (2)

Authority Type	Action	Date
MOTOR CARRIER OF PROPERTY (EXCEPT HOUSEHOLD GOODS)	ADMINISTRATIVE STATUS ADJUSTMENT → ACTIVE	Jun 17, 2026
MOTOR PROPERTY COMMON CARRIER	GRANTED	Jun 14, 2023

Cargo Types

Liquids/GasesDry Bulk

Active Certifications

Property

MCS-150

Last updated: Nov 10, 2026

Mileage: 1,871,200 (2025)

Operation Classification

AUTHORIZED FOR HIRE

Carrier Operation

Interstate

Recent Changes

Fleettotal drivers: 55 → 111Nov 13, 2026

Identitycompany officer 1: GUILLERMO GROSSI-ROFFI → GUILLERMO GROSSI-ROFFISep 5, 2026

Safetytotal crashes: 0 → 1Sep 4, 2026

Fleettotal drivers: 55 → 0Aug 18, 2026

Contactemail: ggrossi@G4TANKLINES.COM → ggrossi@g4tanklines.comAug 16, 2026

Safety

Out-of-Service Rates

Driver60 inspections

0.0%

6.3%

Carrier National avg

Vehicle53 inspections

17.0%

22.9%

Carrier National avg

Hazmat42 inspections

2.4%

2.5%

Carrier National avg

Overall60 inspections

15.0%

Carrier

Crash Summary

Fatal

Injury

1.0

per 1M miles

Towaway

Total

BASIC Violations

Unsafe Driving20

Driver Fitness0

Hours of Service8

Drug / Alcohol0

Vehicle Maintenance67

Safety Measurement System (SMS)

FMCSA's official per-BASIC roadside-performance measures over the trailing 24 months, computed from the 58 inspections below. A measure of 0 means no recorded violations in that BASIC — not necessarily a strong safety record on a small sample. FMCSA does not publish peer-group percentiles for property carriers, so the underlying measures — not percentile rankings — are shown; Hazmat Compliance and Crash Indicator are not published.

SMS Inspections (24 mo)

Total

Driver OOS

Vehicle OOS

BASIC Measures

Unsafe Driving1.003 insp w/ viol

Hours of Service0.295 insp w/ viol

Driver Fitness0.000 insp w/ viol

Controlled Substances0.000 insp w/ viol

Vehicle Maintenance4.6121 insp w/ viol

Insurance

$1,000,000

BIPD Coverage

—

Cargo Coverage

1 policy on file1 expired

Show 1 expired policy

Type	Status	Insurer	Policy #	Coverage	Effective	Expires	Form
BIPD	Expired	GUIDEONE MUTUAL INSURANCE COMPANY	62P101251	$1,000,000	Jun 5, 2023	Jun 5, 2026	91X

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