Septic tanks, plastics or fiberglass, manufacturing · California

PRC Composites, LLC

Name: PRC Composites, LLC Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Ontario, CA · ~90 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

D
Poor Safety Record: 5.5
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

PRC Composites, LLC runs at 168% of its industry's injury rate - more dangerous than the typical Septic tanks, plastics or fiberglass, manufacturing workplace, earning a grade D.

PRC Composites, LLC: 5.5 TCR = 168% of Septic tanks, plastics or fiberglass, manufacturing BLS 3.3 · 2y Form 300A (see methodology below)

PRC Composites, LLC safety composite

PRC Composites, LLC scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on dart rate (safer than 15%), 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).

29/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 5.55 per 100 workers

Safer than 27% of industry peers
DART rate: F 5.32 per 100 workers

Safer than 15% 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%).

Rising injury rate

PRC Composites, LLC: 4.7 → 6.4 TCR

Peak year 2017 @ 6.4 TCR · DART/TCR 0.96× in 2017

PRC Composites, LLC's TCR rose 1.7 from 4.7 in 2016 to 6.4 in 2017. In 2017, DART was 0.96× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 326199 · Ontario, CA ABOVE-IND · SMALL

Grade D · TCR 5.5 · 168% of ind

DART 5.3 DART
RANK #71/117
PHOTO Mikron Industries
BOOK 2y book
INJ 9 inj
SIZE ~90 FTE

Nearest TCR peer: Mikron Industries (0.0 TCR gap)

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

1WW

5.6
South Holland

5.6
This site

5.5
Mikron Industr

5.5
Easypak - 30 J

5.5

What this shows PRC Composites, LLC averages 5.5 TCR (168% of the Septic tanks, plastics or fiberglass, manufacturing BLS benchmark).

PRC Composites, LLC TCR series: 2016=4.7 · 2017=6.4 · BLS 3.3

Where PRC Composites, LLC falls in its industry

2,838 Septic tanks, plastics or fibe establishments

Safer than 27% of graded establishments in this industry, whose median TCR is 3.5.

Grade D

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #71 safest of 117 Septic tanks, plastics or fibe employers in California.

PRC Composites, LLC (90 employees, TCR 5.5) among 29 same-industry peers, split at the industry median of 101 employees and a TCR of 3.5

PRC Composites, LLC has fewer employees than the Septic tanks, plastics or fiberglass, ma 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
2017	6.4	5.3	5	1	0
2016	4.7	4.7	4	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

326199 · CA · Ontario

2,838 Septic tanks, plastics or fiberglass, manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 599 employers in Ontario, 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	Mikron Industries	WINNEBAGO, IL	5.5 TCR
NAICS-TCR	Easypak - 30 Jytek	LEOMINSTER, MA	5.5 TCR
NAICS-TCR	1WW	BOLINGBROOK, IL	5.6 TCR
NAICS-TCR	South Holland	SOUTH HOLLAND, IL	5.6 TCR
STATE-SIZE	HM Clause - Davis West Research Station	DAVIS	90 FTE
STATE-SIZE	Holland America Flowers, LLC	ARROYO GRANDE	90 FTE
STATE-SIZE	Hettinga - California	ONTARIO	90 FTE
STATE-SIZE	A & R Contracting	BAKERSFIELD	90 FTE
CITY-NEAR	Prime Healthcare Services Inc. Location: St. Mary's, Passaic LLC 46-3499370 (HP29)	Ontario	10,997 FTE
CITY-NEAR	CAONA - ONTARIO HUB	Ontario	4,372 FTE
CITY-NEAR	ONTARIO HUB (CAONA)	Ontario	3,354 FTE
CITY-NEAR	Atlantic Solutions Group Inc, Inc. DBA Empire Workforce Solutions	Ontario	3,240 FTE
NAT-TCR	5472-Swy 0035 0853	Bethesda, MD	5.5 TCR
NAT-TCR	Lewistown (Palew)	Reedsville, PA	5.5 TCR
NAT-TCR	Greensboro Hub (Ncgre)	Greensboro, NC	5.5 TCR
NAT-TCR	Harrington (Demil)	Harrington, DE	5.5 TCR
NAT-SIZE	N and R of New Madrid LLC	New Madrid, MO	90 FTE
NAT-SIZE	Jade Equipment Corp.	Huntingdon Valley, PA	90 FTE
NAT-SIZE	Peapod S&S Framingham, Ma	Framingham, MA	90 FTE
NAT-SIZE	Augusta Nursing and Rehab	Fishersville, VA	90 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: 2017, 2016. 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.