Machine shops · California

ARCH Medical Solutions - Sonora, LLC

Name: ARCH Medical Solutions - Sonora, LLC Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Sonora, CA · ~55 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

F
Failing Safety Record: 8.3
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

ARCH Medical Solutions - Sonora, LLC runs at 251% of its industry's injury rate - far more dangerous than the typical Machine shops workplace, earning a grade F.

ARCH Medical Solutions - Sonora, LLC: 8.3 TCR = 251% of Machine shops BLS 3.3 · 2y Form 300A (see methodology below)

ARCH Medical Solutions - Sonora, LLC safety composite

ARCH Medical Solutions - Sonora, LLC scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on total case rate (tcr) (safer than 12%), 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).

24/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 8.29 per 100 workers

Safer than 12% of industry peers
DART rate: F 3.64 per 100 workers

Safer than 18% of industry peers
Fatalities: D 0

Safer than 50% 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

−5.7

2020→2021

ARCH Medical Solutions - Sonora, LLC injury rate improved

ARCH Medical Solutions - Sonora, LLC's TCR fell 5.7 from 11.1 in 2020 to 5.5 in 2021. Peak filing year was 2020 at 11.1 TCR. In 2021, DART was 0.44× this establishment's average TCR (severity share of cases).

2020=11.1 · 2021=5.5

OSHA ITA Form 300A scorecard

Establishment book 332710 · Sonora, CA ABOVE-IND · SMALL

Grade F · TCR 8.3 · 251% of ind

DART 3.6 DART
RANK #113/126
PHOTO MAIN
BOOK 2y book
INJ 9 inj
SIZE ~55 FTE

Nearest TCR peer: MAIN (0.0 TCR gap)

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

This site

8.3
MAIN

8.3
Northern Gear

8.3
Sterling Machi

8.3
Production Eng

8.3

What this shows ARCH Medical Solutions - Sonora, LLC averages 8.3 TCR (251% of the Machine shops BLS benchmark).

ARCH Medical Solutions - Sonora, LLC TCR series: 2020=11.1 · 2021=5.5 · BLS 3.3

Where ARCH Medical Solutions - Sonora, LLC falls in its industry

1,821 Machine shops establishments

Safer than 12% of graded establishments in this industry, whose median TCR is 3.5.

Grade F

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #113 safest of 126 Machine shops employers in California.

ARCH Medical Solutions - Sonora, LLC (55 employees, TCR 8.3) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5

ARCH Medical Solutions - Sonora, LLC has more employees than the Machine shops median and a higher injury rate than the industry's median TCR of 3.5. 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	5.5	3.6	3	0	0
2020	11.1	9.3	6	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

332710 · CA · Sonora

1,821 Machine shops employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 65 employers in Sonora, 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	CANTON, MI	8.3 TCR
NAICS-TCR	Northern Gear and Machining	MUSKEGO, WI	8.3 TCR
NAICS-TCR	Sterling Machine Technologies, Inc.	PALMYRA, PA	8.3 TCR
NAICS-TCR	Production Engineering Corporation	MINNEAPOLIS, MN	8.3 TCR
STATE-SIZE	FARMING ADMINISTRATION	BAKERSFIELD	55 FTE
STATE-SIZE	Dwelley Family Farms LLC	OAKLEY	55 FTE
STATE-SIZE	Tri-Valley Vineyard Management	CLOVERDALE	55 FTE
STATE-SIZE	Cornerstone Certified Vineyard	WINDSOR	55 FTE
CITY-NEAR	Adventist Health Sonora	Sonora	1,442 FTE
CITY-NEAR	California Department of Transportation Facility 348	Sonora	779 FTE
CITY-NEAR	9292-AHSR001 - HOSPITAL	Sonora	511 FTE
CITY-NEAR	2030	Sonora	350 FTE
NAT-TCR	Godshall's Telford	Telford, PA	8.3 TCR
NAT-TCR	Village of Park Forest	Park Forest, IL	8.3 TCR
NAT-TCR	Haven of Lakeside, LLC	Lakeside, AZ	8.3 TCR
NAT-TCR	Community Place	Jackson, MS	8.3 TCR
NAT-SIZE	Jormac Aerospace - Largo, Florida	Largo, FL	55 FTE
NAT-SIZE	John Cook Painting	Elmira, NY	55 FTE
NAT-SIZE	CMI Industry	Salem, OH	55 FTE
NAT-SIZE	64 RCT Valdosta	Valdosta, GA	55 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.