Bulk Aggregate Delivery Across Union County, OR
Gravel, Stone and Aggregate Delivery in Union County
Oregon Rock Supply brings gravel, stone and aggregate delivery in Union County, OR to driveways, shops and yard projects. Size the load with the calculator on each product page, then order by the ton or the yard.
Start with 3/4 minus, the dense-graded crushed rock this part of Oregon uses under drives and pads. Snowmelt off the high ranges feeds these valleys, so what sits under a base matters as much as the base itself.
Materials Delivered in Union County
Order by the job you are building. A driveway, a patio and a drain each call for a different stone, and the local names below are what you will see on the order.
3/4 Minus and How Oregon Specifies It
3/4 minus is crushed rock graded from 3/4 inch down to fines, so the whole blend compacts and locks up. Oregon yards also call it 3/4-0, 3/4 inch minus or dense-graded base rock.
Oregon specifies base material by top size with a minus notation.
The Oregon Standard Specifications for Construction set dense-graded base aggregate in Section 02630.10 at sizes of 2 1/2 inch - 0, 2 inch - 0, 1 1/2 inch - 0, 1 inch - 0 and 3/4 inch - 0, and Section 00641.10 states that base aggregate is dense-graded unless otherwise specified.
Open-graded aggregate is covered separately in Section 02630.11. That is the clean, fines-free material, and it is the other half of the pair: minus compacts, clean drains.
Ground Conditions Across Union County
This is some of the oldest rock in Oregon, accreted terranes with granitic intrusions, overlain by Columbia River Basalt. Volcanic ash caps the forested slopes and alluvial gravel fills the valleys.
That mix means ground that can be tight, patchy or soft in the same yard. An under-built base shows up fast when the ground moves under it.
Snowmelt is the main event across the Blue Mountains and Wallowas. The high ranges take 50 to 80 inches of precipitation a year and feed valleys that get far less.
That runoff scours stream banks and culverts in spring, works off steep forest roads, and runs hard off bare slopes after wildfire. Riprap and clean drainage stone are how those edges get held.
The working season is short between snowmelt and the first hard frosts. Frozen ground stops compaction through the winter, so base work is timed around it.
Long cold winters bring heavy mountain snow, and the range tops out at 9,106 feet on Rock Creek Butte. Frost depth is 18 inches from 2,500 to 4,000 feet and 24 inches at 4,000 feet and above, the figure the county sets.
Delivery Across Union County
Everything is ordered online. Pick the material, size the load by the ton or the yard, and choose your delivery date at checkout.
A dump truck then tips the load on site in one pile. That covers addresses in La Grande, Union, Elgin, Cove, North Powder, Imbler and Summerville.
Choosing the Right Material
Baker County, Wallowa County and Grant County all sit in Eastern Oregon on the same ground region as Union County. The oldest rock, the basalt, the ash caps and the valley gravel are the same story, so the material choice does not change across the line.
3/4 minus under a drive or pad, 1/4 minus over a compacted base or under pavers, drain rock in a footing drain, riprap on a scoured bank. Those calls hold here and in the counties around it.
Order 3/4 Minus and the Rest of the Load
3/4 minus is the base most of this work starts from, and it is one of more than twenty materials Oregon Rock Supply delivers across Union County. Size your load on the product page and set a delivery date at checkout.