- CSLB Licensed #268555 • C-21 & C-12
Excavation Contractor in Colusa Junction, CA | Pina Excavating
- CSLB Licensed C-21 (Demolition) and C-12 (Earthwork) - License 268555
- 50 Plus Years of Northern California Industrial Experience
- Free Online Cost Estimator
- Fast Equipment Mobilization from Olivehurst






C-21 Commercial Demolition, Industrial Slab Prep, and Stormwater Retention Basins in Colusa Junction, CA
Licensed Demolition and Industrial Site Work at the CA-20 and I-5 Interchange
Commercial Demolition
Our C-21 license covers structural demolition of CMU buildings, reinforced concrete tilt-up panels, steel-framed industrial buildings, and large concrete slab foundations. We use a hydraulic breaker to break concrete and a demolition grapple to sort and load debris. Concrete and masonry go to a recycled aggregate facility.
Industrial Concrete Slab Preparation
Industrial slabs at Colusa Junction support heavy forklifts, loaded semi-trucks, and agricultural processing equipment. Our slab prep: demolish and remove existing deteriorated slab (C-21), excavate and replace soft subgrade with engineered fill, compact to 95 percent density, place 6 to 8 inches of Class II base, laser grade to plus or minus one-eighth inch.
Stormwater Retention Basin Excavation
Commercial sites disturbing more than 1 acre need a SWPPP-compliant stormwater detention basin. We dig basins to the size and depth on your civil engineer's drainage plan. We also grade the earthen berm and install the outlet control structure.
Equipment Deployed on Colusa Junction Projects:
- 135G Excavator with Hydraulic Breaker and Demolition Grapple
- Cat 950 Wheel Loader
- 140M Motor Grader
- 10-Ton Smooth Drum Vibratory Roller
- Side-Dump Trailer Fleet
Excavation Services for Colusa Junction, CA Commercial and Agricultural Properties
Commercial Utility Trenching for Colusa Junction, CA Industrial Sites
Commercial properties at Colusa Junction need large-diameter utility systems. Storm drains handle significant runoff from big impervious surfaces. Electrical conduit carries three-phase industrial power. We call 811 before every dig. Next, we trench to the specified depth and slope. We install correct pipe bedding material. Then we backfill in 6-inch compacted layers.
Services Include:
- Large-diameter storm drain trench digging in Colusa Junction
- Industrial electrical duct bank trenching for three-phase service
- Commercial sewer lateral and process waste line trench work
- Underground fire main trench digging for sprinkler system supply
- Water service line trench digging for commercial and agricultural use
Industrial Site Clearing and Legacy Structure Removal in Colusa Junction, CA
Commercial properties along CA-20 near Colusa Junction often have aging structures that need to go before new development can start. This includes old truck stop buildings, deteriorated concrete block warehouses, and abandoned agricultural storage facilities.We hold the C-21 demolition license that authorizes us to perform this work legally. Other general contractors must subcontract demolition. We own the full scope.
Services Include:
- Concrete block building demolition in Colusa Junction (C-21)
- Industrial concrete slab breaking and removal
- Old equipment storage building teardown
- Steel and scrap metal separation and removal
- Site rough grading after demolition and debris removal
Commercial Building Pad and Industrial Foundation Excavation in Colusa Junction, CA
New commercial and industrial buildings at Colusa Junction need pad elevations that keep the finished floor above the 100-year flood elevation in Colusa County. We work from your civil engineer's grading plan to achieve the specified finish pad elevation.
Services Include:
- Commercial building pad grading for truck stop and retail development
- Industrial pre-engineered metal building site preparation
- Loading dock excavation and truck well grading
- Grain storage and agricultural processing facility pad prep
- Foundation trench excavation for commercial concrete buildings
Stormwater Retention Basins and Industrial Drainage for Colusa Junction, CA
Commercial sites at Colusa Junction that disturb more than 1 acre trigger Regional Water Quality Control Board permit requirements. A properly designed and excavated stormwater detention basin is required before a grading permit is issued.Also, large impervious yard surfaces generate high runoff volumes. Catch basin networks, storm drain laterals, and detention ponds work together to manage that water.
Services Include:
- SWPPP stormwater detention basin excavation in Colusa Junction
- Industrial catch basin network installation
- Oil and water separator pit excavation for fuel-handling sites
- Bio-retention basin grading for LID stormwater credit
- Perimeter French drain systems for commercial buildings
Why Colusa Junction, CA Commercial Clients Work With Pina Excavating
C-21 Demolition License - Rare in This Market
Most excavating contractors in this region do not carry a C-21 license. We do. This means you deal with one contractor for demo, grading, and drainage instead of three.
50 Plus Years of Commercial Site Work
We have been doing commercial and industrial site work in Northern California for over five decades. We know Colusa County permit requirements and coordinate pre-construction inspections without delays.
Right-Sized Industrial Equipment
A 135G excavator with a hydraulic breaker, a 10-ton vibratory roller, and a 140M motor grader are the right tools for commercial slab demolition and industrial pad grading.
Free Online Cost Estimation
Use our Foundation and Commercial Pad Cost Calculator before the first site visit. Get a line-item estimate for your demolition, pad grading, and drainage basin work.