Bulk Material Delivery in Ontario, CA

For gravel and aggregate delivery in Ontario, CA, California Rock Supply stocks the materials local crews ask for by name. Class 2 base is the standard base here, the compacted layer under driveways, parking pads, pavers and slabs. It is specified by Caltrans as Class 2 aggregate base.

Ontario sits on alluvial ground, with soils that run from sandy loam to clay. Expansive clay is common in the basins, and it swells when wet and cracks when dry.

Materials for Ontario Projects

Drainage is the job that decides how a lot performs through winter. Rain arrives in a few big storms, and it sheets off hardscape and dry ground fast. Washed stone with no fines lets that water move instead of pooling.

Use 3/4 inch drain rock, also sold as #57 stone, in French drains, drainage trenches and drainage layers. It is clean stone, so water passes through it. 3/4" Drain Rock is the usual first pick for a trench or a drywell.

For downspout runs, drywells and drainage behind retaining walls, Drain Rock does the same work at a range of sizes. Pair it with filter fabric so fines do not clog the voids.

Angular stone handles load and drainage together. 3/4" Crushed Stone suits drainage beds, drive surfacing and construction entrances, while 3/8" Crushed Stone covers pipe bedding and topping over a compacted base.

Two more sizes round out a drainage plan. #67 Stone is a slightly smaller washed stone for drainage and concrete work, and #4 Crushed Stone takes heavy drainage, trench bottoms and construction entrances.

Below the washed stone, base and bedding materials finish the job. Class 2 base goes down first under drives, pads and slabs. Sand levels and beds the surface above it.

For the base itself, Class 2 base, also called Class II base rock, is the material to order. Recycled base rock made from Road Base or asphalt works the same way under drives, patios and slabs. Some suppliers list it as crushed miscellaneous base, or CMB.

Delivery to Ontario and the Surrounding Area

You order online and pick a delivery date at checkout. Choose your quantity by the ton or by the yard, and use the calculator if you need to size the load. A dump truck then delivers to the site.

Ontario sits in San Bernardino County. Deliveries also run to San Bernardino, Fontana, Rancho Cucamonga, Rialto and Victorville. If your job is anywhere in that part of the county, the same ordering process applies.

Have the drop spot clear and reachable before the truck arrives. Bulk loads are dumped, so the driver needs room to place the pile where you want the material worked from.

Ground and Conditions in Ontario

The long, warm, dry season suits base and paver work for most of the year. Winter storm days are the main interruption, so timing a delivery around them matters.

Alluvial ground here runs from sandy loam to clay, and expansive clay shows up in many basins. That clay swells when wet and shrinks and cracks when dry, which moves anything built on top of it.

Two things follow from that. First, compact the base in lifts so the material locks together before paving goes down. Second, give water somewhere to go. A drainage layer of clean washed stone, plus a French drain or drywell at the low corner, keeps storm runoff from sitting against the clay. Wetting that clay is what makes it swell under slabs and paving.

Order Bulk Aggregate for Your Ontario Job

California Rock Supply delivers bulk gravel, washed drainage stone, sand and soil across Ontario and San Bernardino County. Pick your material, set the quantity by the ton or yard, and choose a delivery date at checkout. Place your order online and get the load on its way to your site.