Class 2 Base, Sand and Gravel Delivery in Napa County, CA

California Rock Supply handles gravel, stone and aggregate delivery in Napa County, CA for two kinds of buyers: contractors building drives and pads, and homeowners fixing a path or a bed. Both usually start with Class 2 base, the standard California base material under drives, parking pads and pavers.

Soils here change over short distances, and that shapes what you put down. Heavy clay in the Coast Range valleys and hills cracks when dry and swells when wet, so base and drainage choices matter more than they would on sand.

Materials Delivered in Napa County

Material falls into four families: base, washed stone, sand, and soil and decorative rock. Base does the structural work. The rest handle drainage, bedding, planting or finish.

Base materials

Class 2 Base, also called Class II base or Class 2 aggregate base, is the one most jobs start with. Caltrans Standard Specifications Section 26 specifies California aggregate base as Class 2 or Class 3, in a 3/4 inch or 1-1/2 inch maximum grading. Class 2 is the higher-strength grade and the common base under drives, pads and pavers; Class 3 is a lower-strength grade. The spec allows processed reclaimed asphalt and concrete, which is why recycled Class 2 base is widely sold. Order it for driveways, parking pads and the compacted base under slabs and Stone Screenings paths.

Crusher Run is a compacting, binding material for base and drives. California buyers more often ask for Class 2 base for the same job, but crusher run works where you want the fines to lock up. Driveway Gravel surfaces an existing drive or tops a compacted Class 2 base.

Washed stone for drainage

Clean stone with no fines lets water move through it. 3/4" Drain Rock, also called #57 stone, goes in French drains, drainage trenches and drainage layers. Drain Rock covers French drains, drywells, downspout runs and drainage behind retaining walls. For drainage beds, drive surfacing and construction entrances, use 3/4" Crushed Stone; 3/8" Crushed Stone handles finer drainage, pipe bedding and topping.

On slopes and creek banks, RipRap, also called rock slope protection, armors against winter storm runoff. Caltrans calls placed rock on slopes rock slope protection.

Sand and soil

Mason Sand is for brick and block work, paver joints and play areas. Washed Sand, also called concrete sand, handles leveling, bedding and base under slabs. Top Soil builds up lawns and beds over clay, hardpan or sandy native soil, and Fill Dirt raises grade and backfills pads before a Class 2 base goes down.

Decorative rock

River Cobble fills decorative beds, borders and dry creek beds. Large River Rock slows runoff in swales and heavier erosion work, and Natural Pea Gravel covers play areas, walkways and bedding. Stone Screenings, or DG, is the fine, firm-packing choice for paths and patios laid over a compacted base.

Delivery Across Napa County

You order online, choose a quantity by the ton or the yard, size the load with the calculator, and pick a delivery date at checkout. A dump truck then delivers to the site. That covers Napa, American Canyon, St. Helena, Calistoga, Yountville, Angwin, Deer Park and Pope Valley.

Have the drop spot ready before the truck arrives. The load needs firm ground, a clear path for the bed, and enough overhead clearance. Bulk material is dumped, not placed, so decide where you want the pile and keep vehicles clear. If a gate, low wire or soft shoulder is in the way, pick a spot closer to the street.

Ground Conditions Across Napa County

Most rain falls from late fall to spring, much of it in a few large winter storms and atmospheric rivers. On sandy ground that water soaks in quickly. On clay it sits on top or runs off, and on slopes it runs fast.

For a drive or pad, that means compaction and drainage do the work. Compact Class 2 base in lifts over stable subgrade, and plan a drainage layer or trench where water collects. Clean drain rock and 3/4 inch crushed rock give water somewhere to go instead of pooling under the base.

Winter storms also drive hillside runoff and slides on steep slopes, debris flows when intense rain hits recently burned slopes, and wave and storm erosion along the shoreline. RipRap on slopes, creek banks and culvert outlets handles that. Timing matters too: the dry season from late spring into fall is the main window for base, driveway and paver work. Summer fog is common near the shore, but it is winter rain and saturated clay that hold jobs up.

Choosing the Right Material

Sonoma County sits in the same Bay Area region and the same Coast and Coast Ranges ground zone, so the ground is similar to Napa County's. The soils note is the same one: sandy dune and beach soils along parts of the shoreline, heavy clay in the Coast Range valleys and hills. Base and drainage choices there follow the same reasoning, so compare typical projects instead of soil.

Solano County spans more than one zone, the Coast and Coast Ranges plus the Central Valley floor. That changes the choice. Where ground runs toward valley floor conditions, drainage behaves differently than on Napa's clay hills, so a drainage layer and slope protection carry different weight. Base still goes down compacted either way.

Within Napa County, match the material to the job. Structural work: Class 2 base, fill dirt under it. Water: drain rock, 3/4 inch crushed rock, RipRap on slopes. Bedding and joints: mason sand, washed sand. Planting: top soil, garden soil, shredded mulch. Finish: river cobble, Natural Pea Gravel, Stone Screenings.

Order Class 2 Base and Aggregate for Your Napa County Project

Drives, parking pads, paver bases, drainage trenches, retaining wall backfill, planting beds and decorative beds all come down to the right material. California Rock Supply delivers Class 2 base, washed stone, sand, soil and decorative rock across Napa County. Size your load with the calculator, pick a delivery date, and place your order online.