Drain Rock, Stone and Soil Delivery in Pittsburg, CA

California Rock Supply handles gravel and aggregate delivery in Pittsburg, CA, by the ton. Class 2 base is the material most local jobs start with, for driveways and the compacted layer under pavers and slabs. Heavy clay soils that swell when wet are common in the Coast Range valleys here, so drainage matters as much as the base.

Materials for Pittsburg Projects

Water is the first problem on most Pittsburg sites. Winter storms drop rain fast, and clay holds it. Washed stone is how you move that water away from a foundation, a drive, or a retaining wall.

Every washed product below is clean stone with no fines. Water passes through instead of pooling on top.

For a drywell or a long downspout run, drain rock is the usual pick. It is sold as drain rock and also as 3/4 inch drain rock, which is the same clean washed stone at a set size. Water moves through it freely, so a trench lined with filter fabric stays open instead of silting shut.

Above the drainage layer, the base goes in. Class 2 Base is the standard California base material, specified by Caltrans as Class 2 aggregate base. Local yards also call it Class II base rock or base rock. It compacts hard under a drive, a parking pad, or the base under Stone Screenings paths.

For the surface itself, Driveway Gravel tops a compacted base and takes tire traffic. Stone Screenings, often called DG, packs firm for walkways and patios. Walkway Gravel gives paths a finer, walkable finish.

Ground and Conditions in Pittsburg

The dry season from late spring into fall is the window for base, driveway and paver work. Winter rain and saturated clay are what hold jobs up, not cold. Plan the dig and the base for the dry months and leave drainage work for whenever a trench is open.

Soils change over short distances across the Bay Area. Sandy ground along parts of the shoreline drains quickly. Heavy clay in the valleys and hills does not, and it cracks when dry and swells when wet. That swelling is what pushes a slab or lifts a driveway edge.

Two habits follow from that. First, put a compacted Class 2 base at the right depth before any paver or slab goes down, so the clay below is not carrying the load alone. Second, give water a path out with a drainage layer of clean washed stone. On steeper ground, winter runoff and slides are real, and rip rap armors slopes, creek banks and culvert outlets against storm flow.

Delivery to Pittsburg and the Surrounding Area

Order online and choose your material and quantity by the ton or by the yard. Bulk delivery to a site in Pittsburg is the standard way to buy base, drain rock and soil. A full truck is the practical unit on most jobs.

We cover Pittsburg and the rest of Contra Costa County, including Concord, Antioch, Richmond, Walnut Creek and San Ramon. Lead time depends on the material and the haul, so confirm timing before you schedule a crew or a pour.

Have the drop spot clear and reachable, and know where you want the pile set. Class 2 base, washed stone, sand, topsoil and mulch all arrive in bulk, ready to spread.

Order Base, Drain Rock and Soil for Your Pittsburg Job

California Rock Supply delivers Class 2 base, washed drain rock, gravel, sand and soil across Pittsburg and Contra Costa County. Tell us the material, the quantity and the site, and we will get it on a truck. Order online when you are ready to start.