Utility line (i.e., communication, electric power), construction · California

American Underground Contractor

Name: American Underground Contractor Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Byron, CA · ~99 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

D
Poor Safety Record: 4.7
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

American Underground Contractor runs at 168% of its industry's injury rate - more dangerous than the typical Utility line (i.e., communication, electric power), construction workplace, earning a grade D.

American Underground Contractor: 4.7 TCR = 168% of Utility line (i.e., communication, electric power), construction BLS 2.8 · 2y Form 300A (see methodology below)

American Underground Contractor safety composite

American Underground Contractor scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 11%), 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).

26/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 4.71 per 100 workers

Safer than 22% of industry peers
DART rate: F 5.43 per 100 workers

Safer than 11% 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%).

Rising injury rate

American Underground Contractor: 4.0 → 5.4 TCR

Peak year 2020 @ 5.4 TCR · DART/TCR 1.15× in 2020

American Underground Contractor's TCR rose 1.4 from 4.0 in 2018 to 5.4 in 2020. In 2020, DART was 1.15× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 237130 · Byron, CA ABOVE-IND · SMALL

Grade D · TCR 4.7 · 168% of ind

DART 5.4 DART
RANK #99/147
PHOTO Main
BOOK 2y book
INJ 6 inj
SIZE ~99 FTE

Nearest TCR peer: Main (0.0 TCR gap)

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

This site

4.7
Main

4.7
429

4.7
prairie teleco

4.7
NFS:NFYUM - NF

4.7

What this shows American Underground Contractor averages 4.7 TCR (168% of the Utility line (i.e., communication, electric power), construction BLS benchmark).

American Underground Contractor TCR series: 2018=4 · 2020=5.4 · BLS 2.8

Where American Underground Contractor falls in its industry

1,605 Utility line (i.e., communicat establishments

Safer than 22% of graded establishments in this industry, whose median TCR is 2.0.

Grade D

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #99 safest of 147 Utility line (i.e., communicat employers in California.

American Underground Contractor (99 employees, TCR 4.7) among 29 same-industry peers, split at the industry median of 74 employees and a TCR of 2.0

American Underground Contractor has more employees than the Utility line (i.e., communication, elect median and a higher injury rate than the industry's median TCR of 2.0. 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
2020	5.4	5.4	4	0	0
2018	4.0	4.0	2	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

237130 · CA · Byron

1,605 Utility line (i.e., communication, electric power), construction employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 6 employers in Byron, CA · 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	Main	ANDALUSIA, AL	4.7 TCR
NAICS-TCR	429	WOBURN, MA	4.7 TCR
NAICS-TCR	prairie telecom services inc	SPRINGFIELD, IL	4.7 TCR
NAICS-TCR	NFS:NFYUM - NFYUM- Yuma, AZ	YUMA, AZ	4.7 TCR
STATE-SIZE	MARIA ELENA RUIZ MORALES	LODI	99 FTE
STATE-SIZE	La Verne Nursery, Inc.	PIRU	99 FTE
STATE-SIZE	California Sun Grower Services - North	COLLEGE CITY	99 FTE
STATE-SIZE	Santa Paula Plant #3	SANTA PAULA	99 FTE
CITY-NEAR	O&M - Delta Field Division	Byron	144 FTE
CITY-NEAR	SLDMWA TFO	Byron	62 FTE
CITY-NEAR	Marin Food Specialties Inc	Byron	51 FTE
CITY-NEAR	051080-BYRON PO	Byron	29 FTE
NAT-TCR	Ground Effects Kansas City	Kansas City, MO	4.7 TCR
NAT-TCR	Attleboro Retirement Village	Langhorne, PA	4.7 TCR
NAT-TCR	The Women's Treatment Center	Chicago, IL	4.7 TCR
NAT-TCR	Eagle Transport Corporation - Ashland	Ashland, KY	4.7 TCR
NAT-SIZE	St James Behavioral Health Hospital	Gonzales, LA	99 FTE
NAT-SIZE	WW4	Walworth, WI	99 FTE
NAT-SIZE	Carlile Transportation Systems, LLC - Tacoma Terminal	Tacoma, WA	99 FTE
NAT-SIZE	Houston Foam Plastics ELP	El Paso, TX	99 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: 2020, 2018. 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.