Bulk Gravel Delivery to Hartline, WA

For gravel and aggregate delivery in Hartline, WA, the working season runs long on either side of a hard winter. Eastern Washington's wet weather season for erosion control runs October 1 through June 30.

Once snow falls or the ground freezes, placing and compacting base material stops being practical.

Washington Rock Supply delivers bulk material here, starting with 5/8 minus, the crushed surfacing top course this market calls by its inch size. Order online, size the load with the calculator on each product page, and a dump truck tips it on your site.

Ground and Conditions in Hartline

This part of the Columbia Basin is windblown loess over Columbia River basalt. Where the Ice Age floods ran, the loess was stripped off and the basalt left bare.

The floods also dumped sand and gravel bars in the coulees and along the rivers.

The silt sheds water rather than absorbing it, so a cloudburst or a rapid thaw lands on ground with no cover and cuts rills and gullies. Wind off bare, dry silt moves soil too.

Irrigation runoff moves it as well.

Across the Columbia Basin, Yakima Valley and the channeled scablands, that combination is what a thin base fails on first. Water sits and the surface loses its shape.

A compacted minus course carries the traffic instead, and a washed course under it gives water somewhere to go.

Grant County sets a frost depth of 18 inches, and the building department sets the figure that applies to your project. The ground freezes properly here, unlike west of the Cascades, so frost heave in an unbound base is worth designing around.

Materials for Hartline Projects

Paths and walkways are where fines and screenings do the work. A minus product packs down tight underfoot because the crusher fines stay in the blend and bind the stone together.

Walkway Gravel, sold as 1/4 minus or quarter minus, is the fine end of the minus range. It suits garden paths, side yards and firm walking surfaces.

Stone Screenings, also called crusher dust or 3/8 minus, beds pavers and flagstone, fills joints and sets a level bed, and it compacts rather than drains.

5/8 Minus, the crushed surfacing top course, is the Washington default surfacing layer. Crushed rock with the fines left in, it packs hard and sheds water instead of soaking it up.

Use it on driveways, parking pads and shed or shop slabs.

1 1/4 Minus, or crushed surfacing base course, is the structural course below that top layer. Its larger top size and fewer fines carry load and stay workable on soft wet ground.

Where a perched water table sits on till, Drain Rock keeps its voids because it is washed and fines-free.

Delivery to Hartline and the Surrounding Area

Hartline sits in Grant County, and the storefront also covers Moses Lake, Ephrata, Quincy, Mattawa and Warden. Quantities are ordered by the ton or by the yard.

Each product page has a calculator to help you size the load before you check out.

You order online and pick a delivery date at checkout. A dump truck arrives and tips the load in one pile on your site.

Have the delivery area clear and reachable, and know where you want that pile to land.

Order Gravel and Aggregate for Your Hartline Project

Start with the calculator on the product page to work out your tonnage or yardage, then order online and choose a delivery date. Washington Rock Supply delivers bulk gravel, stone, sand and soil across Hartline and Grant County.

Place your order when you are ready.