Cobble, Stone and Soil Delivery in Mill Valley, CA

Wondering what to order for a slope that keeps washing out? For gravel and aggregate delivery in Mill Valley, CA, California Rock Supply supplies the coarse stone that holds ground in place. Class 2 base goes under drives and pads, and clean stone handles the water. Clay soils in the Coast Range hills push runoff hard once winter storms arrive, so the right rock size matters more than the volume.

Materials for Mill Valley Projects

Slope, swale and creek bank work starts with coarse, angular stone. The pieces lock together, slow the water and stay put when runoff hits. Order by size, coarsest first.

Rip rap, also called rock slope protection, is the heavy option for a bank that scours every winter. #4 crushed stone suits trench bottoms and heavy drainage. Where water needs to flow rather than be held back, 3/4 inch drain rock has no fines, so it stays open.

For the surface above, Class 2 base is the standard California base material, specified by Caltrans as Class 2 aggregate base. Recycled base rock, made from Road Base or asphalt, does the same job under drives and patios. Some suppliers call it crushed miscellaneous base or CMB. If you want a binding surface on a drive, ask for Crusher Run, or top a compacted base with Driveway Gravel.

Finer finishes round out an order. Stone Screenings, often shortened to DG, packs firm for paths and patios. Walkway Gravel and Natural Pea Gravel cover walkways and play areas. For planting, Top Soil and Garden Soil build up beds over heavy clay.

Delivery to Mill Valley and the Surrounding Area

Order online and pick a delivery date at checkout. You choose the quantity by the ton or by the yard, and the calculator sizes the load if you are unsure. A dump truck then brings it to your site.

Delivery covers Mill Valley and the rest of Marin County, including San Rafael, Novato, Larkspur, San Anselmo and Corte Madera. Tell us where the truck can pull in and where you want the pile dropped. On a tight hillside lot, that spot is worth planning before the load arrives.

Ground and Conditions in Mill Valley

Most rain here falls from late fall to spring, much of it in a few large winter storms and atmospheric rivers. That water soaks into sandy ground quickly but sits on or runs off clay soils and slopes. Heavy clay that cracks when dry and swells when wet is extensive in the Coast Range valleys and hills.

Hillside runoff and slides on steep slopes are the winter risk, along with wave and storm erosion along the shoreline. That is why coarse stone for swales, bank armoring and drainage layers earns its place on the order. Get those pieces in before the rain starts.

The dry season from late spring into fall is the main window for base, driveway and paver work. Summer fog near the shore is normal and does not stop a job. Winter rain and saturated clay do. Build the base in dry weather so it compacts properly, and time your delivery to match.

Questions About Stone and Delivery in Mill Valley

What stone should I use for drainage in Mill Valley?

Start with clean, washed stone that has no fines, because fines clog and hold water. 3/4 inch drain rock works in French drains and drainage trenches, and #4 crushed stone suits trench bottoms and heavy flow. For a swale or a creek bank, rip rap is the coarse option that resists storm runoff.

What should I have ready when the truck arrives?

Have a clear, firm spot for the pile, with room for the truck to pull in and out safely. Move vehicles and anything breakable out of the way first. If you need the load spread over a distance, plan how you will move it after it lands, and keep the drop point close to where the material is going.

Order Stone and Soil for Your Mill Valley Project

California Rock Supply delivers gravel, stone, sand and soil to Mill Valley and across Marin County. Whether you are armoring a slope, cutting a swale or building a base, pick your material, size the load with the calculator, and choose a delivery date at checkout. Place your order online when you are ready.