Professional Excavation Services in the Northern Sacramento Valley
GPS-controlled precision excavation for commercial pads, foundations, utility trenches, retention ponds, and bulk earthworks across Tehama, Butte, Shasta, Glenn, Colusa, and surrounding areas.
Excavation is the foundation of almost every construction project, and Walberg, Inc. has been delivering precision excavation services across Northern California since 1999. Whether you need a commercial building pad cut to grade, a basement excavated for a new home, utility trenches opened for underground services, or a retention pond built from scratch, our team has the equipment, technology, and experience to move earth accurately and efficiently.
Our excavation fleet includes excavators equipped with GPS machine control systems that deliver sub-inch accuracy on every cut and fill. This technology allows our operators to work directly from digital site plans, eliminating the need for constant survey staking and ensuring that finished grades meet engineered specifications on the first pass. The result is faster project completion, less material waste, and a finished product that meets the tightest tolerances required by engineers and building departments.
Walberg, Inc. has completed excavation projects across a wide range of applications in Tehama, Butte, Shasta, Glenn, Colusa, and surrounding areas. Notable recent projects include the Andersen Ranch Retention Pond, which required precise volume calculations and engineered slopes, and the Veterans Memorial Park Retaining Wall project in Oroville, which involved structural excavation in challenging soil conditions adjacent to existing infrastructure. These projects demonstrate our ability to handle complex excavation work that demands both heavy production capability and careful precision.
With over 100 pieces of heavy equipment in our fleet — all company-owned and maintained by our in-house mechanics — we can scale our operations to match project requirements. Small residential foundation excavations might require a single excavator and a few trucks, while large commercial earthwork projects may call for multiple machines running simultaneously. Our crew of 38 to 40 employees includes experienced operators who understand soil conditions throughout the Northern Sacramento Valley and can adapt their approach based on what they encounter in the field. As a BBB A+ Accredited contractor ranked in BuildZoom's top 3% in California, we bring both capability and accountability to every excavation project.
What's Included
- Commercial and residential building pad excavation
- Basement and foundation excavation
- Utility trench excavation for water, sewer, electrical, and telecom
- Retention pond and detention basin construction
- Bulk cut and fill earthwork operations
- Rock excavation and removal
- GPS machine control for sub-inch grading accuracy
- Spoil hauling and disposal
- Dewatering for wet excavations
- Compaction testing coordination
OUR PROCESS
How we deliver excavation.
Site Assessment & Survey Review
We review the project plans and engineered grading specifications, visit the site to evaluate access, soil conditions, and groundwater potential, and coordinate with the project engineer to confirm excavation depths, slopes, and tolerances.
Utility Locates & Mobilization Planning
We call USA North 811 for underground utility locates, plan equipment staging and haul routes, arrange for spoil disposal or stockpile locations, and schedule the work to align with the overall project timeline.
GPS-Controlled Excavation
Our operators execute the excavation using GPS machine control, cutting to precise grades and depths specified in the plans. Material is loaded and hauled as needed, and we maintain proper drainage and shoring throughout the excavation process.
Grade Verification & Project Closeout
We verify finished grades against the engineered plans, coordinate with the project surveyor for final confirmation, and prepare the site for the next phase of construction. All disturbed areas outside the work zone are restored to their pre-construction condition.
EQUIPMENT
Equipment used on this service.
AREAS SERVED
Available across Northern California.
RELATED SERVICES
Other services you might need.
FAQ
Frequently Asked Questions
Excavation costs in Northern California typically range from $5 to $15 per cubic yard for bulk earthwork, though the actual price depends on soil conditions, depth, access, haul distance, and project complexity. Rock excavation and wet conditions increase costs. We provide detailed estimates based on plan review and site inspection.
GPS machine control uses satellite positioning to guide excavator buckets to exact grades and depths shown on the digital site plan. This technology delivers sub-inch accuracy, reduces the need for survey staking, eliminates over-excavation, and produces a finished grade that meets engineered specs on the first pass, saving time and money.
Yes, California law requires calling USA North 811 at least two working days before any excavation. Walberg, Inc. handles this coordination as part of our standard service. We verify that all underground utilities have been properly marked before any digging begins to prevent damage to gas, water, electrical, and telecommunications lines.
Yes, we regularly excavate in the rocky and hardpan soils common throughout the Northern Sacramento Valley. Our fleet includes hydraulic hammers and breakers that can fracture rock for removal. We assess soil conditions during our initial site visit and plan our equipment and approach accordingly.
Our equipment can excavate to depths of 30 feet or more, depending on soil conditions and shoring requirements. For excavations deeper than 5 feet, Cal/OSHA requires engineered shoring or sloping plans, which we coordinate as part of the project. Dewatering is available for excavations that encounter groundwater.
Clean excavated soil can often be reused on-site as fill material elsewhere on the project. Excess material can be hauled to our yard or to an approved disposal site. If the excavated material is contaminated, we transport it to licensed disposal facilities in compliance with environmental regulations.