Key Takeaway
Roblar Quarry LLC is a active facility mine producing SandAndGravel, located in Petaluma, Sonoma County, CA. It has 4 violations on record (0 S&S) and $596 in proposed penalties. Operated by Roblar Quarry LLC.
Roblar Quarry LLC
Operator: Roblar Quarry LLC
Controller: John Barella; Richard D Powell; James Ratto
Location: Petaluma, Sonoma County, CA
Employees: 12
Recent Violations
View all 4 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/12/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 09/08/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 10/08/2024 | 56.20014 | Non-S&S | LowNegligence | $147 |
| 10/07/2024 | 56.12004 | Non-S&S | LowNegligence | $147 |
Inspections
View all 5 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/12/2025 | 11/12/2025 | 12.50 | 1 |
| 09/08/2025 | 09/16/2025 | 18.50 | 1 |
| 04/23/2025 | 04/23/2025 | 6.50 | 1 |
| 10/07/2024 | 10/08/2024 | 15.50 | 1 |
| 06/24/2024 | 06/24/2024 | 12.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Roblar Quarry LLC have?
Roblar Quarry LLC has 4 MSHA violations on record, of which 0 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $596.
What type of mine is Roblar Quarry LLC?
Roblar Quarry LLC is a Facility mine producing SandAndGravel, located in Petaluma, Sonoma County, CA. It currently has 12 employees.
Has anyone been injured or killed at Roblar Quarry LLC?
According to MSHA records, Roblar Quarry LLC has 0 reported accident/injury records and 0 fatalities on file.
Who operates Roblar Quarry LLC?
Roblar Quarry LLC is operated by Roblar Quarry LLC and controlled by John Barella; Richard D Powell; James Ratto. MSHA Mine ID: 0405975.