Grinding Rock Aggregates — Trucking Company in Independence, California
Grinding Rock Aggregates is a licensed, DOT-registered trucking company located in Independence, California (USDOT 3907306). The company operates 4 trucks and 6 drivers.
Company Overview
Grinding Rock Aggregates is an active DOT registered motor carrier operating under USDOT Number 3907306.
| Total Trucks | 4 | ||
| Tractors Owned | 0 | ||
| Trailer Owned | 0 | ||
| Total Drivers | 6 | ||
| USDOT | 3907306 | ||
| MCS-150 Mileage Year | 2023 | ||
| MCS-150 Date | 20241202 0000 | ||
| MCS-150 Mileage | 55000 | ||
| Does Grinding Rock Aggregates transport Hazardous Material? | No | ||
| Carrier Operation | N/A | ||
| Grinding Rock Aggregates in business since | 20220624 | ||
Company Contact Information
Grinding Rock Aggregates 
131 N Hwy 395
Independence, CA 93526
Mailing Address:
Po Box 331
Independence, CA 93526
760-878-5160
760-878-2311
131 N Hwy 395
Independence, CA 93526
Mailing Address:
Po Box 331
Independence, CA 93526
760-878-5160
760-878-2311
Cargo Hauled by Grinding Rock Aggregates
Grinding Rock Aggregates Safety Measurement System Data
Last Updated June 2026| Total Number of Inspections for the measurement period (24 months) | 3 |
| Total Number of Driver Inspections for the measurment period | 3 |
| Total Number of Driver Inspections containing at least one Driver Out-of-Service Violation | 0 |
| Total Number of Vehicle Inspections for the measurement period | 3 |
| Total Number of Vehicle Inspections containing at least one Vehicle Out-of-Service violation | 0 |
| Grinding Rock Aggregates Unsafe Truck Driving Data | |
| Number of inspections with at least one Unsafe Driving BASIC violation | 0 |
| Unsafe Driving BASIC Roadside Performance Measure Value | 0 |
| Unsafe Driving BASIC Acute/Critical Indicator (Yes = Acute/Critical from investigation within previous 12 months) | No |
| Grinding Rock Aggregates Hours-of-Service (HOS) Data | |
| Number of inspections with at least one Hours-of-Service BASIC violation | 0 |
| Hours-of-Service (HOS) Compliance BASIC Roadside Performance measure value | 0 |
| Hours-of-Service (HOS) Compliance BASIC Acute/Critical Indicator (Yes = Acute/Critical from investigation within previous 12 months) | No |
| Grinding Rock Aggregates Truck Driver Fitness Data | |
| Number of inspections with at least one Truck Driver Fitness BASIC violation | 0 |
| Truck Driver Fitness BASIC Roadside Performance measure value | 0 |
| Truck Driver Fitness BASIC Serious Violation Indicator (Yes = Acute/Critical from investigation within previous 12 months) | No |
| Grinding Rock Aggregates Controlled Substances and Alcohol Data | |
| Number of inspections with at least one Controlled Substances and Alcohol BASIC violation | 0 |
| Number of inspections with at least one Controlled Substances and Alcohol BASIC violation | 0 |
| Controlled Substances and Alcohol BASIC Acute/Critical Indicator (Yes = Acute/Critical from investigation within previous 12 months) | No |
| Grinding Rock Aggregates Vehicle Maintenance Data | |
| Number of inspections with at least one Vehicle Maintenance BASIC violation | 2 |
| Vehicle Maintenance BASIC Roadside Performance measure value | 2.8 | Vehicle Maintenance BASIC Acute/Critical Indicator (Yes = Acute/Critical from investigation within previous 12 months) | No |
Grinding Rock Aggregates Location on Google Map
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