Carrierintel
SW

SIERRA WASTE SYSTEMS

Carrierintel Safety Score: 57/100. 21 inspection violations in 12 months. Last inspected Aug 2026.

DOT 1248630ActiveIntrastate Non-HazmatPHOENIX, AZ

COMPANY

Authority since
—
MCS-150
2026-03-05 · 510 mi (2020)
Fleet
11 units · — trailers · 12 drivers

ADDRESS

Physical
2211 WEST ROOSEVELT
PHOENIX, AZ 85009
Mailing
Same as physical

CONTACT

Phone
6022436555
Email
dave.pierzga@sierrawaste.com

OFFICERS

Primary Officer
DAVE PIERZGA
Title
SECRETARY

OPERATION & CARGO

Operation classification
Private Property
Specialty
Waste Hauler
Cargo types
1
Garbage, Refuse, Trash
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
269 mo
Since USDOT registration
INSURANCE
Insurance not verified
Federal insurance records may not cover this carrier's operation type. Verify coverage through state records or the insurer.
RISK GRADE
Elevated Risk
2 risk factors · 1 strengths
OOS RATE
26.3%
5 / 19 inspections

Carrierintel Safety Score

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

57
out of 100
Fair
Markers: OOS inspection Crash Fatality

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Declared (MCS-150)
11 power units
Unique power units seen
4
Inspections
6
Discrepancy
0.4x

Elevated Risk

2 risk factors · 1 strengths · 4 data points

SAFETY PERFORMANCE

Crash Record
2 crashes · 0 fatal · 0 with injuries · 2 tow-away
Clean Inspection Rate
74% — 14 clean of 19 inspections
Out-of-Service Rate
26.3% — driver OOS 0 insp., vehicle OOS 5 insp.

COMPLIANCE & AUTHORITY

USDOT Registration
Status: Active
Operating Authority
No operating authority on file
Out-of-service orders
None on record
Authority Events
No authority history events
MCS-150 Filing
Last filed 2026-03-05

INSURANCE

Active Coverage
Insurance not verified — Federal insurance records may not cover this carrier's operation type. Verify coverage through state records or the insurer.

SUMMARY

Severe OOS rate 40% (last 24 mo)
3.1 violations per inspection
No crashes in the last 24 months

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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