Cobble and Bulk Aggregates for Angwin, CA

California Rock Supply handles gravel and aggregate delivery in Angwin, CA, and the material most jobs here start with is Class 2 base. It is the standard California base, specified by Caltrans as Class 2 aggregate base, and it goes under driveways, parking pads and the compacted layer beneath pavers and slabs.

Angwin sits in Napa County, where clay soils hold winter water and slow a build. Getting the drainage layer right matters as much as the base itself.

Materials for Angwin Projects

Drainage is the work this area asks for most. Winter storms arrive fast, and water that cannot move through clay or off a slope will find the lowest point on your property. Washed stone is how you give it somewhere to go.

Start with the coarsest sizes for moving water. RipRap, also called rock slope protection, armors creek banks, culvert outlets and steep slopes against storm runoff. Drain Rock is clean stone with no fines, so water passes through it freely; use it in French drains, drywells, downspout runs and behind retaining walls.

Then the smaller washed sizes for tighter work. 3/4" Drain Rock, sold elsewhere as #57 stone, fills drainage trenches and drainage layers. 3/8" Crushed Stone handles fine drainage, pipe bedding and a topping over a compacted base.

Base and Surfacing, Coarse to Fine

For a walkable path, Walkway Gravel gives a finer surface than driveway stone. Around beds and borders, River Cobble and Large River Rock slow runoff in dry creek beds and swales, and Natural Pea Gravel covers play areas, walkways and bedding.

Ground and Conditions in Angwin

The working season runs from late spring into fall. That is when base, driveway and paver work goes in, because winter rain and saturated clay are what hold a job up. Plan the delivery so your base is compacted before the first big storm, not after.

Soils here change over short distances. Heavy clay that cracks when dry and swells when wet is extensive through the Coast Range valleys and hills. Clay does not drain, so a driveway or pad on it needs a compacted Class 2 base built to the right depth and a drainage layer that carries water away.

Hillside runoff and slides are the winter risk on steep slopes, and intense rain on recently burned ground can move debris fast. RipRap and cobble at slope toes, culvert outlets and swales reduce that. Fill Dirt raises grade and builds up pads before the Class 2 base goes down.

Delivery to Angwin and the Surrounding Area

Order online and choose your material by the ton or the yard. Bulk delivery to a site in Angwin brings the load on a dump truck, so tell us where it should sit and keep the approach clear.

We deliver across the city and the rest of the county, including Napa, American Canyon, St. Helena, Calistoga and Yountville. Lead time depends on the material and the haul, so confirm your date when you place the order.

Questions About Angwin Aggregate Orders

Do you deliver Class 2 base to Angwin, CA?

Yes. California Rock Supply delivers Class 2 base and the rest of our bulk materials to Angwin and addresses across Napa County. Order online by the ton or the yard, tell us where the truck should place the load, and keep the driveway or street approach clear on delivery day.

What gravel is best for a driveway in Angwin?

Class 2 base is the standard choice for the compacted layer, and it is specified by Caltrans as Class 2 aggregate base. On clay ground, build a drainage layer of clean Drain Rock or 3/4" Drain Rock first, then cap the drive with Driveway Gravel. Recycled Class 2 base works the same way for the base course.

Order Bulk Aggregate for Your Angwin Project

California Rock Supply delivers Class 2 base, washed drainage stone, sand, soil and cobble to Angwin and the surrounding Napa County area. Tell us the material, the quantity and where the truck should dump it. Place your order online and we will get your load on the way.