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Employers › CA

Mining, Quarrying, Oil & Gas · Napa, CA

Calmat CO.

According to OSHA enforcement records (2010–2026), Calmat CO. has a average safety record: 3 violations across 2 inspections. See the full breakdown below.

Top 25% by penalty33% serious
$17,500
OSHA penalties
3
Violations cited
2
OSHA inspections
#20,561
of 100,495 penalized employers

Calmat CO. in Napa, CA has been the subject of 2 OSHA workplace inspections and 3 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $17,500. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Calmat CO. 2 times over 2 years, roughly annually. These inspections resulted in 3 violations, averaging 1.5 per inspection. Its total OSHA penalty ranks in the top quarter of penalized employers nationally. Of these, 1 were classified as serious - indicating hazards that could cause death or serious harm. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this sits roughly in line with peers (0.9x the sector average) on inspection frequency. For comparison, Canyon Rock CO., INC. in Forestville, CA is another mining, quarrying, oil & gas employer with 3 OSHA inspections on record and $17,555 in current penalties.

1.5
violations per inspection
33.3%
of violations were serious
80%
of penalized employers rank lower

How Calmat CO. compares on OSHA penalties

Total current penalty vs the Mining, Quarrying, Oil & Gas per-employer average

in penalties

What this shows Calmat CO. runs well above peers (4.0x the sector average) in total OSHA penalties.

Source U.S. Department of Labor, OSHA enforcement extracts As of 2026

Where this penalty ranks nationally

Total current OSHA penalty vs every U.S. employer with a nonzero penalty

$17,500 Bottom 20% least affordable more affordable than 20% of 100,495 U.S. employers with a penalty

$0–$5,000: 44,435 U.S. employers with a penalty (44%). Below this entry. $5,000–$10,000: 20,628 U.S. employers with a penalty (21%). Below this entry. $10,000–$15,000: 11,165 U.S. employers with a penalty (11%). Below this entry. $15,000–$20,000: 6,629 U.S. employers with a penalty (7%). This entry sits in this band. $20,000–$25,000: 4,205 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,885 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,052 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,483 U.S. employers with a penalty (1%). Above this entry. $40,000–$45,000: 1,120 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 792 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,101 U.S. employers with a penalty (5%). Above this entry. This employer $0 $55,000 every penalized U.S. employer, bucketed by value

Each bar is a $5K-wide band; taller bars hold more U.S. employers with a penalty. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Department of Labor, OSHA enforcement extracts · 2026

What the Data Says About Calmat CO.

The federal enforcement record for Calmat CO. in Napa, CA includes 2 OSHA inspections and 3 violations, translating to 1.50 violations per inspection. Of those violations, 1 (33.3%) were classified as serious, 0 (0.0%) as willful, and 0 (0.0%) as repeat. Serious violations denote hazards likely to cause death or serious physical harm; willful and repeat categories indicate intentional disregard or recurrence of previously cited hazards.

OSHA assessed $17,500 in initial penalties against this employer, later adjusted to a current total of $17,500 - no reduction from the original assessment. Average penalty per inspection works out to $8,750. Against the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer, this record runs well above peers (4.0x the sector average).

Inspection activity spans from 2023-11-16 to 2026-04-03, a window of roughly 2 years.

Enforcement detail

OSHA Inspection History

Total Inspections

2

First Inspection

2023-11-16

Last Inspection

2026-04-03

Inspection Span

2 yrs

Violations / Inspection

1.5

Avg Penalty / Inspection

$8,750

Industry Avg / Inspection

$2,034

What this shows 2 inspections over 2 years, averaging 1.5 violations per visit. That's $8,750 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,034.

Enforcement detail

Violation Breakdown

1

Serious

33.3% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

2

Other-Than-Serious

66.7% of total

What this shows Serious violations involve hazards that could cause death or serious physical harm. Willful violations indicate intentional or knowing disregard of the law. Repeat violations are for hazards previously cited within the past 5 years.

Enforcement detail

Penalty Analysis

Initial Penalty Assessed

$17,500

Current Penalty Amount

$17,500

Penalty Reduction

None

What this shows No reduction on record. The current penalty matches the original OSHA assessment.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Calmat CO. compares to the Mining, Quarrying, Oil & Gas sector, which has 2,359 employers tracked by PlainWorker.

Metric Calmat CO. Industry Avg
Inspections 2 2.2
Violations 3 3.1
Total Penalty $17,500 $4,394
Avg Penalty per Inspection $8,750 $2,034
View all 2,359 employers in Mining, Quarrying, Oil & Gas →

Nearby & Similar Employers in Mining, Quarrying, Oil & Gas

Valley Oil Field Service, INC.
Bradford, PA
2 inspections $17,500
Canyon Rock CO., INC.
Forestville, CA
3 inspections $17,555
Simpson Stone Company, Inc.
Jarrell, TX
0 inspections $0
Thomas Brown Construction
Boone, NC
0 inspections $0
Spartan Materials, LLC.
Albany, NY
2 inspections $17,617

Compare Calmat CO. vs Valley Oil Field Service, INC. side-by-side →

Frequently Asked Questions

Is Calmat CO. safe to work at? ▼
Based on OSHA records, Calmat CO.'s workplace safety record is average, with typical for this industry. The employer has 3 violations across 2 inspections, including 1 serious violations. Compared to Mining, Quarrying, Oil & Gas industry peers, this is above average for penalties. Review the full inspection history below for details.
How many OSHA violations does Calmat CO. have? ▼
Calmat CO. has 3 OSHA violations on record, including 1 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $17,500.
How many OSHA inspections has Calmat CO. had? ▼
Calmat CO. has had 2 OSHA inspections, with the first recorded on 2023-11-16 and the most recent on 2026-04-03. This averages 1.5 violations per inspection.
What is the total penalty amount for Calmat CO.? ▼
Calmat CO. has been assessed $17,500 in current OSHA penalties.
Does Calmat CO. have any serious or willful violations? ▼
Yes. Calmat CO. has 1 serious violations. Serious violations involve hazards likely to cause death or serious physical harm. Willful violations indicate the employer intentionally or knowingly disregarded the law.
What industry does Calmat CO. operate in? ▼
Calmat CO. operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212319). This industry has 2,359 employers tracked by PlainWorker, with 5,096 total OSHA inspections and $10.36M in cumulative penalties.
How does Calmat CO.'s safety record compare to industry average? ▼
Calmat CO.'s total OSHA penalty of $17,500 is above the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer (4.0x the average). The employer has 2 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Canyon Rock CO., INC. in Forestville, CA is a similar mining, quarrying, oil & gas employer with $17,555 in current penalties.

Explore PlainWorker

Mining, Quarrying, Oil & Gas Industry

All 2,359 employers in this sector
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Safety Rankings

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What to check next

Calmat CO.'s record is one establishment in a larger pattern. Use it as a research checklist, not a verdict on the employer overall.

These figures are the federal enforcement record on file and reflect past inspections, not a statement about current workplace conditions. See the disclaimer for how to read them.

Data Sources & Methodology ▼

Data as of 2026. Source: U.S. Department of Labor (OSHA, WHD).

Source: OSHA Enforcement Data

Inspection and violation records from the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, covering the period 2010–2026. Includes inspection dates, violation types (serious, willful, repeat, other-than-serious), and penalty amounts. Penalties shown are current assessed amounts and may differ from original citations due to settlement, contest, or reduction.

Source: Wage and Hour Division (WHD)

Compliance actions from the WHD, covering enforcement of the Fair Labor Standards Act (FLSA), including minimum wage, overtime, and child labor violations. Back wages represent amounts owed to affected employees as determined by WHD investigations.

Employer Matching

Employers are matched across OSHA and WHD datasets by name, state, and city. Employers included in PlainWorker have 2 or more OSHA inspections or $1,000+ in WHD back wages. Data is updated monthly from data.dol.gov.

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Every figure on PlainWorker is rendered directly from official U.S. Department of Labor OSHA and Wage & Hour Division enforcement records, no number is typed in by an editor. This employer's ratios (penalty-per-violation, industry comparisons) are computed live from the 2 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.