Excavation contractors · Arizona

Premier Underground Construction LLC - Arizona

Name: Premier Underground Construction LLC - Arizona Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Glendale, AZ · ~148 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 2.2
Avg TCR: 2.8
Industry avg: 0
Fatalities

Subscribe to safety-record updates (RSS)

The verdict

Premier Underground Construction LLC - Arizona runs at 78% of its industry's injury rate - safer than the typical Excavation contractors workplace, earning a grade B.

Premier Underground Construction LLC - Arizona: 2.2 TCR = 78% of Excavation contractors BLS 2.8 · 2y Form 300A (see methodology below)

Premier Underground Construction LLC - Arizona safety composite

Premier Underground Construction LLC - Arizona scores strongest on total case rate (tcr) (safer than 56% of same-industry peers) and weakest on dart rate (safer than 49%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

53/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 2.17 per 100 workers

Safer than 56% of industry peers
DART rate: D 0.75 per 100 workers

Safer than 49% of industry peers
Fatalities: D 0

Safer than 52% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−1.4

2020→2021

Premier Underground Construction LLC - Arizona injury rate improved

Premier Underground Construction LLC - Arizona's TCR fell 1.4 from 2.9 in 2020 to 1.5 in 2021. Peak filing year was 2020 at 2.9 TCR. In 2021, DART was 0.35× this establishment's average TCR (severity share of cases).

2020=2.9 · 2021=1.5

OSHA ITA Form 300A scorecard

Establishment book 238910 · Glendale, AZ AT/BELOW-IND · MID

Grade B · TCR 2.2 · 78% of ind

DART 0.8 DART
RANK #11/20
PHOTO Lan-Co Companies, Inc.
BOOK 2y book
INJ 6 inj
SIZE ~148 FTE

Nearest TCR peer: Lan-Co Companies, Inc. (0.0 TCR gap)

Read with this employer → · Industry book → · Arizona employers → · Look up another →

This site

2.2
Lan-Co Compani

2.2
J/K Excavation

2.2
Trinity Gradin

2.2
National Fuel

2.2

What this shows Premier Underground Construction LLC - Arizona averages 2.2 TCR (78% of the Excavation contractors BLS benchmark).

Premier Underground Construction LLC - Arizona TCR series: 2020=2.9 · 2021=1.5 · BLS 2.8

Where Premier Underground Construction LLC - Arizona falls in its industry

1,750 Excavation contractors establishments

Safer than 56% of graded establishments in this industry, whose median TCR is 2.5.

Grade B

More dangerous than peersSafer than peers

Narrower to Arizona alone (the establishments it most directly competes with for workers and contracts): ranked #11 safest of 20 Excavation contractors employers in Arizona.

Premier Underground Construction LLC - Arizona (148 employees, TCR 2.2) among 29 same-industry peers, split at the industry median of 51 employees and a TCR of 2.5

Premier Underground Construction LLC - Arizona has more employees than the Excavation contractors median and a lower injury rate than the industry's median TCR of 2.5. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries	Illnesses	Fatalities
2021	1.5	0.8	2	0	0
2020	2.9	2.1	4	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238910 · AZ · Glendale

1,750 Excavation contractors employers nationwide with a credible TCR · 9,594 rated employers in Arizona with headcount on file · 313 employers in Glendale, AZ · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Lan-Co Companies, Inc.	NORTH SYRACUSE, NY	2.2 TCR
NAICS-TCR	J/K Excavation & Grading Co., Inc.	RIALTO, CA	2.2 TCR
NAICS-TCR	Trinity Grading, Inc.	TEMECULA, CA	2.2 TCR
NAICS-TCR	National Fuel Production	BLOOMINGTON, IN	2.2 TCR
STATE-SIZE	Brothers Harvesting Inc	SOMERTON	148 FTE
STATE-SIZE	Meritage Homes of Texas - San Antonio Division	SCOTTSDALE	148 FTE
STATE-SIZE	Olympic West Fire Protection, LLC	TEMPE	148 FTE
STATE-SIZE	Andrews Refrigeration Inc	SCOTTSDALE	148 FTE
CITY-NEAR	730 ABRAZO ARROWHEAD CAMPUS	Glendale	1,429 FTE
CITY-NEAR	Glendale Elementary School District	Glendale	1,201 FTE
CITY-NEAR	4701-730	Glendale	1,051 FTE
CITY-NEAR	Ono-515	Glendale	910 FTE
NAT-TCR	Houlton Office	Houlton, ME	2.2 TCR
NAT-TCR	CBOC Meridian	Meridian, MS	2.2 TCR
NAT-TCR	Veritas Steel- Wausau	Wausau, WI	2.2 TCR
NAT-TCR	CHOMARAT North America (160 Alliance Bld)	Williamston, SC	2.2 TCR
NAT-SIZE	Sutter Medical Foundation (185-490)	Fairfield, CA	148 FTE
NAT-SIZE	Barrington Plant	Barrington, NJ	148 FTE
NAT-SIZE	Thorn Hill	Warrrendale, PA	148 FTE
NAT-SIZE	Avalon Care Center- Sonora LLC	Sonora, CA	148 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2021, 2020. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.