Remote Hydrovac Excavation: Long-Distance Digging
7-step process guide with equipment, safety, and cost information.
Remote excavation is a hydrovac technique where the truck is positioned a significant distance from the dig site, using extended hose runs to reach locations inaccessible to the vehicle. This capability extends hydrovac service to areas behind buildings, inside fenced compounds, down slopes, across waterways, and other locations where truck access is impossible.
Standard hydrovac operations position the truck within boom reach (typically 18-26 feet) of the dig site. Remote excavation extends this range to 300 feet or more by running the suction hose and water line from the truck to the excavation point. While this reduces efficiency compared to direct boom operations, it enables hydrovac work in locations where no other non-destructive method is available.
Remote excavation requires careful planning for hose routing, adequate vacuum power to maintain suction over long distances, and sufficient water pressure at the nozzle after accounting for friction losses in extended hose runs. Experienced operators know how to optimize these factors to maintain productive excavation rates at distance.
Step-by-Step Process
Access Assessment
Survey the dig site and surrounding area to determine the optimal truck position and hose routing. Identify obstacles, grade changes, and any requirements for hose support or protection.
Equipment Selection
Select hose lengths and diameters appropriate for the distance. Calculate expected pressure and vacuum losses to ensure adequate performance at the dig point.
Truck Positioning
Position the hydrovac truck at the closest accessible point to the dig site. Ensure stable footing, adequate space for operations, and clear routing for hose runs.
Hose Deployment
Route suction hose and water line from the truck to the dig site, protecting hoses from vehicle traffic, sharp edges, and other hazards. Secure connections and test for leaks.
Excavation Operations
Perform hydrovac excavation at the remote site using standard techniques. Monitor vacuum performance and water pressure, adjusting as needed for the extended distance.
Material Management
Ensure continuous vacuum flow to the debris tank. Long hose runs may require periodic clearing of material buildup in the suction line.
Backfill and Cleanup
Complete backfill and restoration at the dig site, then retrieve and clean hose runs. Inspect hoses for damage before storage.
Equipment Recommendations
- High-vacuum hydrovac unit (positive displacement blower preferred for remote work)
- Extended suction hose inventory (6-inch and 8-inch diameter options)
- Extended water hose with adequate pressure rating
- Hose bridges for road crossings and traffic protection
- Portable power washer for cleanup at the dig site
Safety Considerations
- ⚠Protect hose runs from vehicle traffic with bridges or barriers
- ⚠Secure all hose connections to prevent separation under vacuum
- ⚠Maintain communication between the dig site and truck operator
- ⚠Account for reduced performance when planning project timelines
- ⚠Ensure adequate emergency egress from the remote dig location
Cost Factors
- ●Distance from truck to dig site (longer = more setup time and reduced efficiency)
- ●Number of excavation points per setup
- ●Hose routing complexity and protection requirements
- ●Reduced excavation rate at distance compared to direct operations
- ●Additional labor for hose deployment and retrieval
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