Key Takeaway
Highway 175 Quarry is a active surface mine producing SandAndGravel, located in Lakeport, Lake County, CA. It has 49 violations on record (10 S&S) and $5K in proposed penalties. Operated by Granite Construction Co.
Highway 175 Quarry
Operator: Granite Construction Co
Controller: Granite Construction Inc
Location: Lakeport, Lake County, CA
Employees: 6
Recent Violations
View all 49 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/17/2025 | 56.14112(a)(1) | Non-S&S | ModNegligence | $151 |
| 03/03/2025 | 56.11001 | S&S | LowNegligence | $714 |
| 03/03/2025 | Non-S&S | $0 | ||
| 03/15/2024 | 56.12034 | Non-S&S | ModNegligence | $147 |
| 03/15/2024 | 56.12030 | Non-S&S | LowNegligence | $147 |
| 03/15/2024 | 56.20003(a) | Non-S&S | LowNegligence | $147 |
| 03/15/2024 | 56.12008 | Non-S&S | ModNegligence | $147 |
| 02/08/2022 | 56.20003(a) | Non-S&S | ModNegligence | $133 |
| 09/02/2021 | 56.15004 | Non-S&S | LowNegligence | $125 |
| 09/02/2021 | 56.12004 | Non-S&S | ModNegligence | $125 |
| 06/19/2019 | 56.14207 | Non-S&S | ModNegligence | $121 |
| 08/17/2017 | 56.12032 | Non-S&S | ModNegligence | $116 |
| 12/06/2016 | 56.11001 | Non-S&S | ModNegligence | $114 |
| 01/26/2016 | 56.14112(a)(1) | Non-S&S | LowNegligence | $100 |
| 04/01/2015 | 56.14207 | Non-S&S | LowNegligence | $100 |
| 11/16/2011 | 56.18002(a) | Non-S&S | ModNegligence | $100 |
| 11/16/2011 | 56.14100(b) | S&S | ModNegligence | $108 |
| 11/16/2011 | 56.14110 | S&S | ModNegligence | $108 |
| 04/27/2011 | 56.20003(a) | S&S | ModNegligence | $108 |
| 04/27/2011 | 56.11002 | Non-S&S | LowNegligence | $100 |
Accidents & Injuries
View all 8 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 08/29/2017 | FIRE | ACCIDENT ONLY | None |
| 03/31/2008 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 65d restricted |
| 01/26/2007 | STRIKING OR BUMPING | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/30/2006 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 240d lost |
| 06/06/2006 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 05/10/2006 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/22/2005 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 8d restricted |
| 09/27/2000 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 30d lost |
Inspections
View all 61 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/16/2025 | 12/17/2025 | 16.00 | 1 |
| 09/10/2025 | 09/10/2025 | 4.00 | 1 |
| 09/09/2025 | 09/11/2025 | 15.00 | 1 |
| 08/26/2025 | 08/27/2025 | 7.00 | 1 |
| 06/11/2025 | 06/12/2025 | 13.00 | 1 |
| 03/03/2025 | 03/04/2025 | 19.75 | 1 |
| 08/08/2024 | 08/15/2024 | 37.50 | 1 |
| 03/14/2024 | 03/16/2024 | 19.75 | 1 |
| 08/17/2023 | 08/19/2023 | 24.00 | 1 |
| 05/17/2023 | 05/17/2023 | 2.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Highway 175 Quarry have?
Highway 175 Quarry has 49 MSHA violations on record, of which 10 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $5K.
What type of mine is Highway 175 Quarry?
Highway 175 Quarry is a Surface mine producing SandAndGravel, located in Lakeport, Lake County, CA. It currently has 6 employees.
Has anyone been injured or killed at Highway 175 Quarry?
According to MSHA records, Highway 175 Quarry has 8 reported accident/injury records and 0 fatalities on file.
Who operates Highway 175 Quarry?
Highway 175 Quarry is operated by Granite Construction Co and controlled by Granite Construction Inc. MSHA Mine ID: 0405336.