Cobble and Bulk Aggregates for San Ramon, CA

Winter rain is the job site problem here. Storm after storm rolls in, and water that soaks into sandy ground in minutes sits on heavy clay instead. California Rock Supply delivers gravel and aggregate delivery in San Ramon, CA, and drainage stone is the first thing most crews ask for. Order online, and it ships by the ton.

Pair washed stone with Class 2 base and you have a driveway that drains instead of ponding.

Materials for San Ramon Projects

Start with size. Coarse washed stone moves water. Fine crushed stone beds pipe, backfill, and set pavers. Match the stone to the water, then pick your base.

• Drain Rock is clean stone with no fines, so water passes straight through. Use it in French drains, drywells, downspout runs, and behind retaining walls.
• 3/4" Drain Rock, also called #57 stone, is the workhorse size for drainage trenches and drainage layers under a yard. It stays open under load.
• RipRap, or rock slope protection, armors slope faces, creek banks, and culvert outlets against storm runoff.

Now the crushed side. 3/4" Crushed Stone has angular faces that lock together, which suits drainage beds, drive surfacing, and construction entrances.

3/8" Crushed Stone goes finer for pipe bedding and for topping a compacted base, and #89 Crushed Stone fills tight bedding and paver joints.

Under it all, Class 2 Base is the standard California base, specified by Caltrans as Class 2 aggregate base. It carries driveways, parking pads, and the compacted layer under pavers, slabs, and DG paths.

For the finished surface, Stone Screenings packs firm on paths and patios, and River Cobble handles decorative beds and dry creek beds.

Ground and Conditions in San Ramon

Build in the dry season. Base, driveway, and paver work runs best from late spring into fall, when clay is firm and grading holds shape. Winter rain and saturated clay are what stop a job, not the calendar.

Consider what the ground does. Coast Range valleys like this one carry heavy clay that cracks dry and swells wet, and that swelled clay heaves a base that was not built to drain. So dig the drainage layer first. Set clean stone below the base so water has somewhere to go, then compact the Class 2 base in lifts.

On slopes, runoff is the bigger threat. Hillside water moves fast in a winter storm, and it takes loose soil with it. RipRap on a slope face or at a culvert outlet slows that water down. Time a delivery for a dry window so the stone goes in before the ground softens.

Delivery to San Ramon and the Surrounding Area

Order online and pick your material by the ton or the cubic yard. Bulk delivery to a site in San Ramon drops the load where the truck can reach, so flag your access point and gate width when you order. A full load is heavy, and a narrow drive changes how the driver places it.

San Ramon sits in Contra Costa County, and coverage runs across the county, including Concord, Richmond, Antioch, Pittsburg, and Walnut Creek.

Lead time tracks the season. Book base and drainage stone ahead in the dry months, when crews across the Bay Area are all pouring and grading at once. Once your quantities are set, the order goes out and the stone arrives ready to place.

Order Drainage Stone and Base for Your San Ramon Job

California Rock Supply covers San Ramon and the rest of Contra Costa County with bulk stone, sand, and soil, delivered by the ton. Pick your washed stone, add your Class 2 base, and set your quantities online. Get your drainage layer and base on site before the rain returns, and place your order when you are ready to build.