Pea Gravel, Stone and Soil Delivery in Onalaska, WA

How do you keep water moving away from a house or shop in Onalaska? You order washed stone and gravel and aggregate delivery in Onalaska, WA, and you order 5/8 minus with the fines still in it for the surfaces you want to pack hard.

Washington Rock Supply sells bulk gravel, washed rock, sand and soil by the ton or by the yard. Across the Lower Columbia, Chehalis valley and the Willapa Hills, fine-grained terrace and hill soils hold water instead of shedding it.

Materials for Onalaska Projects

Water is the job here, so start with the stone that drains. Drain rock, also called 7/8 clean, is washed with no fines, so it keeps its voids where a perched water table sits on till.

Use it in footing drains, French drains, curtain drains and infiltration trenches.

Next down the size range is 3/4" Crushed Stone, or 3/4 clean. It is the washed counterpart to a minus product, so it drains instead of compacting.

It suits trench backfill, pipe surround, drain fields and under-slab drainage, and it works around downspout runs that need to carry roof water away from a wall.

For drywells and the heaviest drainage, #4 Crushed Stone is the open-graded size.

4 as the alternative for gravel backfill for drywells.

Where the stone has to be smaller, #8 Crushed Stone is the same washed stone most Washington yards call 3/8 clean.

Then come the minus products, which compact rather than drain. 5/8 Minus is crushed surfacing top course, CSTC, the Washington default for driveways, parking pads and shed or shop slabs.

The fines left in the rock let it pack hard.

Under that top course, 1 1/4 Minus is the crushed surfacing base course, CSBC. It has a larger top size and fewer fines, so it carries load and stays workable on soft wet ground.

Delivery to Onalaska and the Surrounding Area

You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. Each product page has a calculator if you want to size the load before you commit.

A dump truck then tips the material in one pile on site. Onalaska sits in Lewis County, and delivery covers the town and the surrounding area, including Centralia, Chehalis, Winlock, Morton and Mossyrock.

Ground and Conditions in Onalaska

Plan the work around the wet season, because the region runs an October to April rule that limits exposed unworked soil to two days. Ground that softens in this part of the state softens because it is full of water, not because it froze and thawed.

That is why a pad or drive here wants a free-draining course under it. The fine-grained soils across the Lower Columbia, Chehalis valley and the Willapa Hills hold water rather than shed it, and the river valleys back up in winter storms.

Erosion follows the same pattern. Long rain brings shallow slides in the weathered hill soils, and cleared ground in the logged hill country sends sediment downhill.

Riprap and large round rock armour the places where moving water does the damage.

Frost is shallow here, and a depth figure is set by the county or city building department rather than by this page. Build for water, not for ice.

Order Gravel, Stone and Soil in Onalaska

Washington Rock Supply delivers bulk gravel, washed stone, sand and soil across Onalaska and the rest of Lewis County. Pick the material that matches what the ground is doing and the surface you need, size the load on the product page, and choose your delivery date at checkout.

Place your order online and the truck will bring it out.