Carrier profile · USDOT 4151788 · Updated Jul 18, 2026

Markwest Energy Operating Company LLC

DBA MPLX G&P

122 power unitsavg 6.6 yrRegional · 3 statesDENVER, CO96/100

AUTHORITY STATUS UNKNOWN

Observed fleet · trailing 24 mo daily

122Power units

4 observed · MCS-150

3Trailers seen

Decoded · vPIC

6.6Avg age (yr)

2014–2022 · vPIC

Call dispatch(419) 422-2121 Email dispatchepcimaroli@marathonpetroleum.com

Click to see how we scored it

Load decision · FMCSA snapshot · Jul 18, 2026

Clear to load

Active authority and a clean federal record. No blocking issues found.

Watch · 1

MCS-150 update dueThe biennial MCS-150 update is overdue.

In good standing · 2

Out-of-service rates below national averageBoth vehicle and driver OOS rates beat the national benchmark across 12 inspections.No reported crashesNo DOT-reportable crashes are on this carrier's record.

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo12.5%

▼ 22.26% nat'l

Crashes · fatal

Clean · 24 mo

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo12.5%

▼ 22.26% nat'l

Crashes · fatal

Clean · 24 mo

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots

Fleet typeIdentity

Small fleet

122 power units. Brokers price each fleet type apart.

Fleet age vs peersTypical

6.6 yr

Model years 2014–2022 · peer benchmark unavailable.

Identity stabilityStable

2 yr unchanged

Same registration since 2023 — no chameleon / reincarnation signal.

Safety

10 inspections · 24 mo · vs national benchmarks

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 12.5%24-mo cumulative

050%nat'l 22.26%

Driver OOS 0.0%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 8 vehicle and 10 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

14.3% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 13.3 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

10 inspections in the charted months · busiest month Nov '24 · 2

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.0 / unit·yr

thin signalabundant signal

Few roadside inspections for a 122-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.

Registered power units: 122
Inspections · 24 mo: 10
Annualized: ≈5 / yr
Coverage: ≈0.0 inspections / unit · yr

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

393.100 Cargo securement (general)Vehicle Maintenance1 · 1 OOS
393.43 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 1 OOS
393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1 · 0 OOS

Explore full safety record — inspections, BASICs, crashes

Authority & Insurance

Can they legally + adequately haul your load?

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.

Explore full authority & insurance record

Equipment

VIN-decoded · NHTSA vPIC

Capacity· power units = haulable capacity; trailers are towed

Registered power units (MCS-150): 122
Observed power (24 mo): 4
Trailers (towed): 3

Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.

Fleet age· model years · decoded VINs

6.6 yr

Average age

2022

Newest model yr

2014

Oldest model yr

57.1%

VINs decoded

Explore full fleet — VIN roster, equipment mix, age distribution

Operations & Lanes

Revealed by inspection density across 3 states · 24 mo

Operating footprint· revealed by roadside-inspection geography

Operating radiusRegional

revealed

States observed

US states

Inspections · 24 mo

PA busiest

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base

DENVER, CO

1515 ARAPAHOE ST STE 1-600

Top corridor

PA ⇄ CO

PA 6 · KY 3 · OH 1

Density

fewermore

Shade = roadside inspections, last 24 mo.

See the full operating map — state density, top lanes

Network & Fraud

Affiliated entities & reincarnation signals · for review, not a verdict

No shared-VIN flow in the last 12 months

None of this carrier's trucks were inspected under another USDOT in the last 12 months — any shared equipment is historical, not active.

Show all-time history (2 trucks · 1 carriers)

Across all inspections on record: USDOT 1379760

Shares a registration email domain with other carriers

@marathonpetroleum.com — 11 carriers: USDOT 154090 USDOT 311210 USDOT 351594 USDOT 1189299 USDOT 1379760 USDOT 2070369 USDOT 2400808 USDOT 2476826

Capacity consistency· registered vs roadside-observed power units

Registered (MCS-150)

122

Observed (24 mo)

Shared w/ other carriers

Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.

Explore the carrier network & VIN cross-links

Identity & Federal

FMCSA census + L&I dossier

Location

Physical address: 1515 ARAPAHOE ST STE 1-600, DENVER, CO, 80202-2137
Operation: Interstate

Contact

Phone: (419) 422-2121
Email: epcimaroli@marathonpetroleum.com
Web domain: marathonpetroleum.com

Registration

Officers: Kelly Hedglin · Jonathon Jackson
USDOT / docket: 4151788
First registered: Nov 1, 2023
Last MCS-150: Dec 28, 2023 · 100 mi (2023)
FMCSA safety rating: Not rated
Recordable crash rate: 0.00
D-U-N-S: 363343273

Fleet (self-reported · MCS-150)

122

Power units

135

Drivers

—CDL drivers

100

Annual mileage

Open the full identity & federal record

Federal activity

Daily-captured FMCSA licensing & insurance changes — monitored by Vektor

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.

Open the full federal-record activity feed

Reviews

Verified broker, shipper & driver reviews — moderated

Performance ratings only — never the Vektor risk score

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Verification summaryAuthority, insurance, safety and identity facts for MARKWEST ENERGY OPERATING COMPANY LLC.

MARKWEST ENERGY OPERATING COMPANY LLC (USDOT 4151788) has a Vektor safety score of 96/100 and a Clear to load verdict, from the carrier's FMCSA record refreshed Jul 18, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available as of Jul 18, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jul 18, 2026.

Its vehicle out-of-service rate was 12.5% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Jul 18, 2026.

The carrier received 10 roadside inspections in the last 24 months — 8 vehicle-level and 10 driver-level — across 3 states, according to FMCSA roadside-inspection data refreshed Jul 18, 2026.

The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Jul 18, 2026.

It reports 122 power units and 135 drivers in its most recent MCS-150 filing dated Dec 28, 2023.

It has no FMCSA-assigned safety rating in the federal record refreshed Jul 18, 2026.

Frequently asked

What is MARKWEST ENERGY OPERATING COMPANY LLC's USDOT number?

MARKWEST ENERGY OPERATING COMPANY LLC's USDOT number is 4151788.

Is MARKWEST ENERGY OPERATING COMPANY LLC authorized to operate?

As of Jul 18, 2026, MARKWEST ENERGY OPERATING COMPANY LLC is active in the FMCSA register.

What is MARKWEST ENERGY OPERATING COMPANY LLC's safety record?

MARKWEST ENERGY OPERATING COMPANY LLC has a 12.5% vehicle out-of-service rate (national average 22.26%) across 12 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 96/100 (tier: clear).

How big is MARKWEST ENERGY OPERATING COMPANY LLC's fleet?

MARKWEST ENERGY OPERATING COMPANY LLC operates 122 power units and 135 drivers per its most recent MCS-150 filing.

Where is MARKWEST ENERGY OPERATING COMPANY LLC based?

MARKWEST ENERGY OPERATING COMPANY LLC is based in DENVER, CO, with roadside inspections recorded across 3 states.

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