Key Takeaway
SISQUOC AGGREGATES is a active surface mine producing SandAndGravel, located in Santa Maria, Santa Barbara County, CA. It has 191 violations on record (44 S&S) and $138K in proposed penalties. Operated by Martin Marietta Northern California Aggregates,LLC.
SISQUOC AGGREGATES
Operator: Martin Marietta Northern California Aggregates,LLC
Controller: Martin Marietta Materials Inc
Location: Santa Maria, Santa Barbara County, CA
Employees: 12
Recent Violations
View all 191 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 05/28/2025 | 56.14100(a) | Non-S&S | LowNegligence | $151 |
| 03/04/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 07/16/2024 | 56.18002(a) | Non-S&S | ModNegligence | $147 |
| 07/16/2024 | 56.12032 | Non-S&S | ModNegligence | $147 |
| 01/11/2024 | 56.4101 | Non-S&S | HighNegligence | $453 |
| 03/30/2023 | 56.14107(a) | Non-S&S | LowNegligence | $155 |
| 03/30/2023 | 56.4203 | Non-S&S | LowNegligence | $155 |
| 03/30/2023 | 56.12028 | Non-S&S | ModNegligence | $1,152 |
| 11/15/2022 | 56.14100(b) | Non-S&S | LowNegligence | $133 |
| 11/15/2022 | 56.14112(a)(1) | Non-S&S | LowNegligence | $133 |
| 11/15/2022 | 56.14107(a) | Non-S&S | ModNegligence | $133 |
| 11/15/2022 | 56.14115(b) | Non-S&S | LowNegligence | $133 |
| 09/08/2022 | 56.9300(a) | Non-S&S | ModNegligence | $183 |
| 09/08/2022 | 56.18002(a) | Non-S&S | HighNegligence | $183 |
| 06/14/2022 | 46.9(c)(3) | Non-S&S | HighNegligence | $133 |
| 04/12/2022 | 56.20003(c) | Non-S&S | LowNegligence | $133 |
| 11/16/2021 | 56.11001 | S&S | ModNegligence | $856 |
| 11/16/2021 | 56.15005 | S&S | LowNegligence | $383 |
| 11/16/2021 | 56.20003(a) | Non-S&S | ModNegligence | $125 |
| 11/16/2021 | 56.12004 | Non-S&S | LowNegligence | $125 |
Accidents & Injuries
View all 16 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 06/25/2015 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/01/2011 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/06/2010 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 28d restricted |
| 07/19/2010 | HANDTOOLS (NONPOWERED) | DAYS AWAY FROM WORK ONLY | 5d lost |
| 03/29/2010 | FALLING/SLIDING/ROLLING MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/11/2009 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 38d restricted |
| 09/02/2009 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 21d lost |
| 08/13/2008 | STRIKING OR BUMPING | DAYS AWAY FROM WORK ONLY | 220d lost |
| 06/29/2007 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 07/27/2006 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 75d restricted |
Inspections
View all 96 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/30/2025 | 12/30/2025 | 8.50 | 1 |
| 09/10/2025 | 09/10/2025 | 8.00 | 1 |
| 05/28/2025 | 05/28/2025 | 5.50 | 1 |
| 05/27/2025 | 05/29/2025 | 22.50 | 1 |
| 03/27/2025 | 03/27/2025 | 7.00 | 1 |
| 03/03/2025 | 03/04/2025 | 15.50 | 1 |
| 07/15/2024 | 07/16/2024 | 42.50 | 2 |
| 01/12/2024 | 01/12/2024 | 2.00 | 1 |
| 01/10/2024 | 01/12/2024 | 19.00 | 1 |
| 03/30/2023 | 03/30/2023 | 13.75 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does SISQUOC AGGREGATES have?
SISQUOC AGGREGATES has 191 MSHA violations on record, of which 44 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $138K.
What type of mine is SISQUOC AGGREGATES?
SISQUOC AGGREGATES is a Surface mine producing SandAndGravel, located in Santa Maria, Santa Barbara County, CA. It currently has 12 employees.
Has anyone been injured or killed at SISQUOC AGGREGATES?
According to MSHA records, SISQUOC AGGREGATES has 16 reported accident/injury records and 0 fatalities on file.
Who operates SISQUOC AGGREGATES?
SISQUOC AGGREGATES is operated by Martin Marietta Northern California Aggregates,LLC and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 0401959.