Carrierintel
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ENSIGN UNITED STATES DRILLING INC

Carrierintel Safety Score: 70/100. 14 inspection violations in 12 months. Last inspected Sep 2026.

DOT 659413MC 629716ActiveMotor CarrierInterstateZURICH AMERICAN INSURANCE COMPANY +2LASALLE, CO

COMPANY

Authority since
2008-01-14
MCS-150
2026-04-06 · 3,805,545 mi (2025)
Fleet
175 units · 521 trailers · 124 drivers
Annual mileage (VMT)
3,805,545 mi (2025)

ADDRESS

Physical
18287 WCR 394
LASALLE, CO 80645
Mailing
Same as physical

CONTACT

Phone
9703977322
Email
marcus.prochazka@ensignenergy.com

OFFICERS

Primary Officer
SPENCER THERIAULT
Title
VICE PRESIDENT

OPERATION & CARGO

Operation classification
Private Property · Authorized For Hire
Specialty
Tanker / Bulk Liquids
Cargo types
9
General FreightMetal: Sheets, Coils, RollsBuilding MaterialsMachinery, Large ObjectsLiquids / GasesOilfield EquipmentConstructionWater WellOther: PRODUCTION WATER
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
225 mo
Active authority
INSURANCE
3 active
ZURICH AMERICAN INSURANCE COMPANY
RISK GRADE
Elevated Risk
2 risk factors · 4 strengths
OOS RATE
6.3%
4 / 63 inspections

Carrierintel Safety Score

Rolling 12-month heuristic based on inspections, OOS, violations, crashes & fatalities. Not the official FMCSA SMS score.

70
out of 100
Good
Markers: OOS inspection Crash Fatality

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Declared (MCS-150)
175 power units
Unique power units seen
12
+ 10 trailer VINs
+ 1 unclassified VINs
Inspections
14
Discrepancy
0.1x

Elevated Risk

2 risk factors · 4 strengths · 6 data points

SAFETY PERFORMANCE

Crash Record
31 crashes · 4 fatal · 11 with injuries · 31 tow-away
Clean Inspection Rate
94% — 59 clean of 63 inspections
Out-of-Service Rate
6.3% — driver OOS 0 insp., vehicle OOS 4 insp.

COMPLIANCE & AUTHORITY

USDOT Registration
Status: Active
Operating Authority
Active: Motor Carrier
Out-of-service orders
None on record
Authority Events
1 historical event(s) on file
MCS-150 Filing
Last filed 2026-04-06

INSURANCE

Active Coverage
3 policy(ies) on file · total max coverage $1,000,000

SUMMARY

Fatal crash 24 months ago
3 injury crashes in the last 24 months
Low crash rate (1.1 per 100 trucks/yr)
94% clean inspections
Active insurance on file
Coverage $1.0M

INDUSTRY REPORTS

  • ELD Tampering — Carriers cited for ELD tampering under 49 CFR § 395.8(e), by carrier and state.
  • Top Violations — The ten most-cited FMCSA violation codes of the last 30 days.
  • Phantom Fleets — Declared power units against the vehicles seen at roadside inspections.
  • English Proficiency — Carriers whose drivers were cited under 49 CFR § 391.11(b)(2), by carrier and state.
  • Methodology — Where the data comes from and how the Safety Score and Risk Grade are built.

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