Air-conditioning system (except window) installation · California

Marina Mechanical Services

Livermore, CA · ~86 workers · 2 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.3
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Marina Mechanical Services runs at 46% of its industry's injury rate - far safer than the typical Air-conditioning system (except window) installation workplace, earning a grade A.

Marina Mechanical Services: 1.3 TCR = 46% of Air-conditioning system (except window) installation BLS 2.8 · 2y Form 300A (see methodology below)

Marina Mechanical Services safety composite

Marina Mechanical Services scores strongest on total case rate (tcr) (safer than 82% 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).

C

63/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 1.29 per 100 workers

Safer than 82% of industry peers

DART rate
D 1.24 per 100 workers

Safer than 49% of industry peers

Fatalities
D 0

Safer than 51% 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%).

Marina Mechanical Services held a steady TCR band

Marina Mechanical Services's TCR held near 0.1 from 1.3 in 2023 to 1.2 in 2024. Peak filing year was 2023 at 1.3 TCR. In 2024, DART was 0.96× this establishment's average TCR (severity share of cases).

2023=1.3 · 2024=1.2

OSHA ITA Form 300A scorecard

Establishment book 238220 · Livermore, CA AT/BELOW-IND · SMALL

Grade A · TCR 1.3 · 46% of ind

  • DART 1.2 DART
  • RANK #92/594
  • PHOTO Northwest Plumbing O…
  • BOOK 2y book
  • INJ 2 inj
  • SIZE ~86 FTE

Nearest TCR peer: Northwest Plumbing Orlando, Inc (0.0 TCR gap)

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

Marina Mechanical Services in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Marina Mechanical Services averages 1.3 TCR (46% of the Air-conditioning system (except window) installation BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Marina Mechanical Services TCR series: 2023=1.3 · 2024=1.2 · BLS 2.8

Where Marina Mechanical Services falls in its industry

5,793 Air-conditioning system (excep establishments

Safer than 82% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #92 safest of 594 Air-conditioning system (excep employers in California.

Marina Mechanical Services (86 employees, TCR 1.3) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 050100150200250 05101520 Average employees Total Case Rate Marina Mechanical Services
Marina Mechanical Services (86 employees, TCR 1.3) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Marina Mechanical Services has more employees than the Air-conditioning system (except window) median and a lower injury rate than the industry's median TCR of 3.3. 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
2024 1.2 1.2 1 0 0
2023 1.3 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Livermore

5,793 Air-conditioning system (except window) installation employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 296 employers in Livermore, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Northwest Plumbing Orlando, Inc 1.3 TCR
NAICS-TCR Las Vegas Peach, LLC - Shared Services 1.3 TCR
NAICS-TCR Therma LLC 1.3 TCR
NAICS-TCR Blue Ridge 1.3 TCR
STATE-SIZE MALAGA HARVEST SHOP 86 FTE
STATE-SIZE Muller Ranch, LLC 86 FTE
STATE-SIZE OXNARD TERRACE 86 FTE
STATE-SIZE Mushroom Farms 86 FTE
CITY-NEAR Retail Merchandising Solutions, LLC 4,717 FTE
CITY-NEAR California Department of Transportation Facility 577 2,891 FTE
CITY-NEAR Gillig LLC 940 FTE
CITY-NEAR Fat Chance Entertainment 917 FTE
NAT-TCR Harken 1.3 TCR
NAT-TCR Rossman Apiaries LLC 1.3 TCR
NAT-TCR Fairless Plant 1.3 TCR
NAT-TCR Flickinger Industries, Inc. 1.3 TCR
NAT-SIZE San Antonio Division 86 FTE
NAT-SIZE Marion 86 FTE
NAT-SIZE Crookston High School 86 FTE
NAT-SIZE Ndwil - Williston 86 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: 2024, 2023. 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.