VCVioCodes
Carrier Vetting Report
Generated Oct 18, 2026
viocodes.yuriance.net
MARKWEST ENERGY OPERATING COMPANY LLC
USDOT 4151788 · EIN 27-0005448
1515 ARAPAHOE ST STE 1-600, DENVER, CO, 80202-2137
(419) 422-2121 · JONATHON JACKSON
100
Low risk
Risk factors
No red flags in the public FMCSA record
Snapshot
Operating authority
—
Liability insurance
No active filing
Safety rating
Not rated
Power units / drivers
310 / 146
Inspections / CSA pts (24mo)
9 / 6
Crashes (24 mo)
0
Roadside inspection performance
Vehicle OOS rate12.5% · nat 22%
Driver OOS rate0% · nat 6.7%
CSA breakdown — violations by BASIC
Vehicle Maintenance6 pts
Other1 pts
Top cited violations (by CSA points)
| Code | BASIC | Count | OOS | CSA pts |
|---|---|---|---|---|
| 393.43DBMA | Vehicle Maintenance | 1 | 1 | 6 |
| 393.95A | — | 1 | 0 |
Most inspected states
PA6
KY3
Next monthly SMS run — projection
| BASIC | Official (Oct 2026) | Projected | Est. %ile | Trend |
|---|---|---|---|---|
| Unsafe Driving | 0.00 | 0.00 | ≈0–0% | steady |
| Hours-of-Service Compliance | 0.00 | 0.00 | ≈0–0% | steady |
| Driver Fitness | 0.00 | 0.00 | ≈0–0% | steady |
| Controlled Substances/Alcohol | 0.00 | 0.00 | ≈0–0% | steady |
| Vehicle Maintenance | 1.00 | 1.33 | — | ▲ worse |
Latest inspection 2026-05-01. “Projected” recomputes the SMS formula on today’s record — an estimate, not an official FMCSA figure. “Est. %ile” is a VioCodes estimate of how the carrier ranks against its peers (FMCSA marks the percentile itself “Not Public”), shown as a likely range.
Recommendations — what's driving each score
Unsafe Driving needs attention · low impact
• Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Hours-of-Service Compliance needs attention · low impact
• Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Driver Fitness needs attention · low impact
• Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Controlled Substances/Alcohol needs attention · low impact
• Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Generated from the public inspection record. Percentiles/projections are VioCodes estimates, not official FMCSA figures.
Equipment — 7 vehicles seen in inspections
3 trailer2 incomplete vehicle2 truck
Company profile
Officer
JONATHON JACKSON
Recordable crash rate
0 / MM mi
Annual mileage
0.0M mi (2023)
CDL drivers
0
Registered since
2023-11-01
Operation
Interstate
Connections — 6 carriers
Shares identifiers with 6 carriers (1 via shared VINs).
| Carrier | USDOT | Link | Strength |
|---|---|---|---|
| ANDEAVOR FIELD SERVICES LLC | 311210 | strong | |
| MARATHON PIPE LINE LLC | 351594 | strong | |
| WESTERN REFINING PIPELINE LLC | 2476826 | email, phone | strong |
| WESTERN REFINING SOUTHWEST LLC | 154090 | strong |
Activity history (recent)
12/28/2023 — MCS-150 update filed
0.0M mi reported (2023)
11/01/2023 — Registered with FMCSA
PRIVATE PROPERTY
Generated by VioCodes from current public FMCSA data (Census, Licensing & Insurance, SMS/MCMIS, QCMobile). VioCodes is not affiliated with FMCSA. Informational only — verify current coverage and status directly before making a vetting decision. Full interactive profile at viocodes.yuriance.net/carrier/4151788.