Foundation digging (i.e., excavation) · California

Granite Excavation

Name: Granite Excavation Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

South San Francisco, CA · ~37 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

F
Failing Safety Record: 9.7
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Granite Excavation runs at 345% of its industry's injury rate - far more dangerous than the typical Foundation digging (i.e., excavation) workplace, earning a grade F.

Granite Excavation: 9.7 TCR = 345% of Foundation digging (i.e., excavation) BLS 2.8 · 2y Form 300A (see methodology below)

Granite Excavation safety composite

Granite Excavation scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 3%), 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).

16/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 9.66 per 100 workers

Safer than 5% of industry peers
DART rate: F 9.6 per 100 workers

Safer than 3% 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%).

Granite Excavation held a steady TCR band

Granite Excavation's TCR held near 0.1 from 9.7 in 2017 to 9.6 in 2018. Peak filing year was 2017 at 9.7 TCR. In 2018, DART was 0.99× this establishment's average TCR (severity share of cases).

2017=9.7 · 2018=9.6

OSHA ITA Form 300A scorecard

Establishment book 238910 · South San Francisco, CA ABOVE-IND · SMALL

Grade F · TCR 9.7 · 345% of ind

DART 9.6 DART
RANK #173/184
PHOTO Engelke Construction…
BOOK 2y book
INJ 6 inj
SIZE ~37 FTE

Nearest TCR peer: Engelke Construction, Inc. (0.0 TCR gap)

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

This site

9.7
Engelke Constr

9.7
Baltimore8501

9.7
Empire Buildin

9.7
Headquarters

9.6

What this shows Granite Excavation averages 9.7 TCR (345% of the Foundation digging (i.e., excavation) BLS benchmark).

Granite Excavation TCR series: 2017=9.7 · 2018=9.6 · BLS 2.8

Where Granite Excavation falls in its industry

1,750 Foundation digging (i.e., exca establishments

Safer than 5% of graded establishments in this industry, whose median TCR is 2.5.

Grade F

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #173 safest of 184 Foundation digging (i.e., exca employers in California.

Granite Excavation (37 employees, TCR 9.7) among 29 same-industry peers, split at the industry median of 51 employees and a TCR of 2.5

Granite Excavation has fewer employees than the Foundation digging (i.e., excavation) median and a higher injury rate than the industry's median TCR of 2.5. 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
2018	9.6	9.6	3	0	0
2017	9.7	9.7	3	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238910 · CA · South San Francisco

1,750 Foundation digging (i.e., excavation) employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 136 employers in South San Francisco, 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	Engelke Construction, Inc.	HEALDSBURG, CA	9.7 TCR
NAICS-TCR	Baltimore8501	CHICAGO, IL	9.7 TCR
NAICS-TCR	Empire Building Diagnostics	DEPEW, NY	9.7 TCR
NAICS-TCR	Headquarters	PLACERVILLE, CA	9.6 TCR
STATE-SIZE	BULLSEYE FARMS LLC	WOODLAND	37 FTE
STATE-SIZE	KP Spraying LLC	MADERA	37 FTE
STATE-SIZE	KAN - 01	FRESNO	37 FTE
STATE-SIZE	Kimberlina Shop	BAKERSFIELD	37 FTE
CITY-NEAR	Genentech SSF	South San Francisco	13,259 FTE
CITY-NEAR	2032-02120951	South San Francisco	1,497 FTE
CITY-NEAR	Aspiranet	South San Francisco	1,182 FTE
CITY-NEAR	0206-02620951	South San Francisco	1,178 FTE
NAT-TCR	Sun Prairie Plant/Office/Garage	Sun Prairie, WI	9.7 TCR
NAT-TCR	Akron Family Dental / West Chester Dentistry	Akron, OH	9.7 TCR
NAT-TCR	Chester (Nycht)	Chester, NY	9.7 TCR
NAT-TCR	4769-6013-Williams Sonoma	Charleston, SC	9.7 TCR
NAT-SIZE	316-Folkston	Folkston, GA	37 FTE
NAT-SIZE	PharmaCann Hamptonburgh	Hamptonburgh, NY	37 FTE
NAT-SIZE	QSI Dawson	Dawson, GA	37 FTE
NAT-SIZE	Old Town Alexandria - Resort	Alexandria, VA	37 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: 2018, 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.