Central-mixed concrete manufacturing · California

Fontana Plant #4

Fontana, CA · ~20 workers · 5 years of OSHA Injury Tracking Application data.

C
Average Safety Record
3.2
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Fontana Plant #4 runs at 98% of its industry's injury rate - about level with the typical Central-mixed concrete manufacturing workplace, earning a grade C.

Fontana Plant #4: 3.2 TCR = 98% of Central-mixed concrete manufacturing BLS 3.3 · 5y Form 300A (see methodology below)

Fontana Plant #4 safety composite

Fontana Plant #4 scores strongest on total case rate (tcr) (safer than 66% of same-industry peers) and weakest on dart rate (safer than 14%), 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).

D

44/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 3.24 per 100 workers

Safer than 66% of industry peers

DART rate
F 7.76 per 100 workers

Safer than 14% 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%).

Rising injury rate

Fontana Plant #4: 4.8 → 7.8 TCR

Peak year 2024 @ 7.8 TCR · DART/TCR 2.4× in 2024

Fontana Plant #4's TCR rose 2.9 from 4.8 in 2017 to 7.8 in 2024. In 2024, DART was 2.4× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 327320 · Fontana, CA AT/BELOW-IND · SMALL

Grade C · TCR 3.2 · 98% of ind

  • DART 7.8 DART
  • RANK #36/128
  • PHOTO Mokena Yard 210
  • BOOK 5y book
  • INJ 4 inj
  • SIZE ~20 FTE

Nearest TCR peer: Mokena Yard 210 (0.0 TCR gap)

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Fontana Plant #4 in the TCR neighbourhood

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

TCR

What this shows Fontana Plant #4 averages 3.2 TCR (98% of the Central-mixed concrete manufacturing BLS benchmark).

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

Fontana Plant #4 TCR series: 2017=4.8 · 2020=0 · 2022=0 · 2023=3.6 · 2024=7.8 · BLS 3.3

Where Fontana Plant #4 falls in its industry

1,316 Central-mixed concrete manufac establishments

Safer than 66% of graded establishments in this industry, whose median TCR is 4.5.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #36 safest of 128 Central-mixed concrete manufac employers in California.

Fontana Plant #4 (20 employees, TCR 3.2) among 29 same-industry peers, split at the industry median of 33 employees and a TCR of 4.5 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 0100200300400500 051015 Average employees Total Case Rate Fontana Plant #4
Fontana Plant #4 (20 employees, TCR 3.2) among 29 same-industry peers, split at the industry median of 33 employees and a TCR of 4.5

Fontana Plant #4 has fewer employees than the Central-mixed concrete manufacturing median and a lower injury rate than the industry's median TCR of 4.5. 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
2024 7.8 7.8 2 0 0
2023 3.6 3.6 1 0 0
2022 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2017 4.8 4.8 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

327320 · CA · Fontana

1,316 Central-mixed concrete manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 363 employers in Fontana, 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 Mokena Yard 210 3.2 TCR
NAICS-TCR Hi-Grade Materials - Littlerock Ready Mix 3.2 TCR
NAICS-TCR USC Jenna 3.2 TCR
NAICS-TCR Los Angeles RM 3.3 TCR
STATE-SIZE Sills Farms, Inc. 20 FTE
STATE-SIZE F A Maggiore & Sons, LLC 20 FTE
STATE-SIZE CALMEX CONTRACTING INC 20 FTE
STATE-SIZE Velvet Antler Ranch LLC 20 FTE
CITY-NEAR North America Fulfillment Centers (FCs) : LAX9 2,844 FTE
CITY-NEAR Amazon.com Services LLC - LAX9 2,645 FTE
CITY-NEAR 08880314 FONTANA MEDICAL CENTER 2,635 FTE
CITY-NEAR 2032-08180314 2,236 FTE
NAT-TCR Capital Tire - Rossford 3.2 TCR
NAT-TCR Leggett & Platt - Berwick 3.2 TCR
NAT-TCR Las Vegas Store 3.2 TCR
NAT-TCR Sodexo at Epcot Discovery Diner 3.2 TCR
NAT-SIZE B&B Industrial Services, Inc. 20 FTE
NAT-SIZE Sweet Water Cattle Co 20 FTE
NAT-SIZE Eagle Contractor Inc. 20 FTE
NAT-SIZE Lexington District Office 20 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, 2022, 2020, 2017. 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.