Cellular phone tower construction · California

Diamond Engineering Services dba DES Builders

Name: Diamond Engineering Services dba DES Builders Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Benicia, CA · ~25 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · September 26, 2026

C
Average Safety Record: 0.0
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Diamond Engineering Services dba DES Builders runs at 0% of its industry's injury rate - about level with the typical Cellular phone tower construction workplace, earning a grade C.

Diamond Engineering Services dba DES Builders: 0.0 TCR = 0% of Cellular phone tower construction BLS 2.8 · 4y Form 300A (see methodology below)

Diamond Engineering Services dba DES Builders safety composite

Diamond Engineering Services dba DES Builders scores strongest on total case rate (tcr) (safer than 100% of same-industry peers) and weakest on fatalities (safer than 52%), 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).

80/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): A 0 per 100 workers

Safer than 100% of industry peers
DART rate: B 0 per 100 workers

Safer than 78% 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%).

Diamond Engineering Services dba DES Builders held a steady TCR band

Diamond Engineering Services dba DES Builders's TCR held near 0.0 from 0.0 in 2020 to 0.0 in 2023. Peak filing year was 2020 at 0.0 TCR.

2020=0.0 · 2021=0.0 · 2022=0.0 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 237130 · Benicia, CA AT/BELOW-IND · SMALL

Grade C · TCR 0.0 · 0% of ind

DART 0.0 DART
RANK #0/147
PHOTO 15-100 IN
BOOK 4y book
INJ 0 inj
SIZE ~25 FTE

Nearest TCR peer: 15-100 IN (0.0 TCR gap)

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

105185 - IPP R

0.1
103171 - Hunti

0.1
This site

0
15-100 IN

0
Hanwha Q Cells

0

What this shows Diamond Engineering Services dba DES Builders averages 0.0 TCR (0% of the Cellular phone tower construction BLS benchmark).

Diamond Engineering Services dba DES Builders TCR series: 2020=0 · 2021=0 · 2022=0 · 2023=0 · BLS 2.8

Where Diamond Engineering Services dba DES Builders falls in its industry

1,605 Cellular phone tower construct establishments

Safer than 100% of graded establishments in this industry, whose median TCR is 2.0.

Grade C

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #0 safest of 147 Cellular phone tower construct employers in California.

Diamond Engineering Services dba DES Builders (25 employees, TCR 0.0) among 29 same-industry peers, split at the industry median of 74 employees and a TCR of 2.0

Diamond Engineering Services dba DES Builders has fewer employees than the Cellular phone tower construction median and a lower 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
2023	0.0	0.0	0	0	0
2022	0.0	0.0	0	0	0
2021	0.0	0.0	0	0	0
2020	0.0	0.0	0	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

237130 · CA · Benicia

1,605 Cellular phone tower construction employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 91 employers in Benicia, 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	15-100 IN	REYNOLDS, IN	0.0 TCR
NAICS-TCR	Hanwha Q Cells USA Corp.	IRVINE, CA	0.0 TCR
NAICS-TCR	105185 - IPP Repowering- 840MW 2x2x1 CC	DELTA, UT	0.1 TCR
NAICS-TCR	103171 - Huntington Beach Energy Project	HUNTINGTON BEACH, CA	0.1 TCR
STATE-SIZE	Garden Court Inn	FREMONT	25 FTE
STATE-SIZE	4535-1202	SAN DIEGO	25 FTE
STATE-SIZE	Mantis Yard	GONZALES	25 FTE
STATE-SIZE	WasteXperts San Francisco	SAN FRANCISCO	25 FTE
CITY-NEAR	California Department of Transportation Facility 484	Benicia	2,891 FTE
CITY-NEAR	California Department of Transportation Facility 111	Benicia	2,859 FTE
CITY-NEAR	Bio-Rad Laboratories Benicia Campus	Benicia	649 FTE
CITY-NEAR	Underground Construction - Main	Benicia	625 FTE
NAT-TCR	Kinship Pointe Seward	Seward, NE	0.0 TCR
NAT-TCR	Carbro Constructors Corp Main	Warren, NJ	0.0 TCR
NAT-TCR	Chicago Corporate	Chicago, IL	0.0 TCR
NAT-TCR	Lawrenceburg	Lawrenceburg, TN	0.0 TCR
NAT-SIZE	Save a Lot 2185	Clarksdale, MS	25 FTE
NAT-SIZE	Foster Blue Water Oil	Bay City, MI	25 FTE
NAT-SIZE	Jen Air Inc.	Bohemia, NY	25 FTE
NAT-SIZE	Oxley	Oxley, AR	25 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: 2023, 2022, 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.