Gravel, Stone and Soil Delivery in Turlock, CA

Hilmar loamy sand on a flat valley floor

The USDA soil survey maps Hilmar loamy sand, 0 to 1 percent, at the center point of ZIP 95380. Hilmar makes up 85 percent of the unit. Its top mineral layer is loamy sand, a loose, gritty soil that is mostly sand with a little silt and clay.^[1]

The survey rates Hilmar somewhat excessively drained, which means water leaves the upper soil quickly. The same survey places the soil in hydrologic group C, the slow-infiltration class. The two ratings describe different things. Drainage class is about how wet the soil stays, while the hydrologic group is about how much storm water runs off. Either way, plan for some runoff on flat ground after a hard rain.^[1]

Shrink-swell in the top meter is very low here, at 0.5 percent. Loamy sand barely changes volume as it wets and dries, so it will not heave a base the way clay can. The center point stands 100 feet above sea level.^[1],[2]

What loose sand means for a base

Sand is stable under a load once it is confined and packed, but loose sand shifts. A car tire on uncompacted loamy sand sinks and spins. The answer is a good layer of compacted, angular stone that spreads the weight. Road Base, wetted and rolled, binds into a hard crust on top of sand.^[1]

Before you spread base, compact the sand subgrade itself. Wet it lightly and run a plate compactor over it until it stops settling. Fabric is less important on clean sand than on clay, but a light fabric still helps keep the base separate and makes later repairs easier.^[1]

Edges matter more on sand than on firmer soil. Without a solid edge, the base can creep sideways under traffic. A steel, timber or concrete border, or a wider shoulder of compacted Road Base, keeps the drive the width you built.^[1]

Fill Sand has a place on this ground too. It suits leveling under a shed, a pool or a slab, since it compacts well when wet and drains freely. On a lot where the loamy sand has been disturbed or dug out, Fill Sand or Fill Dirt can bring the grade back up before the stone goes down.^[1]

Valley weather at the Turlock station

Weather numbers come from the NOAA normals station Turlock #2, CA, about 2 miles away. It averages 12.4 inches of precipitation and 0.0 inches of snow a year. Lows reach 32 F or colder on 7 days a year.^[3]

The median last freeze date at that station is January 6, and the median first freeze date is December 20. Those few cold nights fall in the middle of winter.^[3]

Summer heat is the season that tests a yard near Turlock. Dark stone and Asphalt Millings get hot in the sun, while lighter River Rock and Decomposed Granite stay cooler underfoot. Pick a light material for a patio or a play area where people walk barefoot, and save the darker ones for the drive.^[3]

With a dry year and only a handful of freezing nights, frost heave is not a real concern for gravel near Turlock. Dust and heat are. Long dry spells dry out loose surfaces, and fine material can blow off a drive. Choosing clean stone for the top layer and keeping the base compacted reduces both problems.^[3]

Irrigation brings the most regular water to many yards in a place this dry. Sprinkler overspray on a gravel drive or path keeps the edges damp, softens them over time and feeds weeds. Aim heads away from stone surfaces, and set a narrow strip of River Rock between the lawn and the drive to catch the spray.^[3]

A shop pad or drive on Hilmar soil

Many lots in this area have a shop, a barn or a wide parking area. For any of them, start by clearing and leveling the site, then compacting the loamy sand. Spread Road Base or Crushed Concrete in thin layers and pack each one wet. Build the pad a little higher than the ground around it so rain runs away from the building.^[1]

For the surface, #57 Crushed Stone gives a clean, open finish that drains instantly. Driveway Gravel gives a firmer, blended surface that is easier to walk on. Asphalt Millings make a firm, dark surface that binds in the summer heat and throws very little dust, which suits a busy work yard.^[3]

Where heavy equipment turns, a coarser bottom layer of 1-1/2" Crushed Gravel under the Road Base adds strength. Railroad Ballast is another option for a rugged, open layer that drains well and resists rutting under big loads.^[1]

Gardens in fast-draining ground

Loamy sand loses water and nutrients fast. Beds do best when the soil is enriched with Compost or built up with Garden Soil. Mixing Topsoil into the sand adds a little more silt and clay, so the soil holds water longer between waterings.^[1]

Mulch matters even more in a dry climate. Brown Shredded Mulch, Red Mulch and Wood Chips shade the soil and cut evaporation through the long dry season. A thick layer also keeps the sand from crusting after irrigation.^[3]

For low-water yards, Decomposed Granite makes a firm, natural surface for paths and sitting areas. River Rock and Pea Gravel around drought-tolerant plants give texture and let any rain soak straight in.^[3]

Wind-blown sand and dry leaves collect in stone beds over time. A yearly rake and a light top-up of River Rock or Pea Gravel keeps a stone yard looking clean. Fabric under the stone slows weeds, though a few will still root in the dust that settles on top.^[3]

Homes in ZIP 95380 and across Turlock

The Census counts 15,736 housing units in ZIP 95380. Detached single-family houses make up 66 percent of them, the median build year is 1975, and owners live in 49 percent of the occupied homes. Turlock as a whole has 26,323 housing units, 68 percent detached, with a median build year of 1984.^[4]

Older drives often just need a fresh top. Rake the old stone, fill the low spots with Road Base, compact them, and spread a new layer of Driveway Gravel. On sand, a solid edge keeps the new stone where it belongs.^[4]

Detached houses make up two thirds of the ZIP's housing, so many jobs here are classic yard work: a new side drive for a trailer, a strip of stone along a fence, a refreshed bed by the porch. Gravel Valet delivers each of those in the amount the job needs.^[4]

Caltrans lists the stone layer below state pavements as Class 2 Aggregate Base, Section 26-1.02B, in its Standard Specifications (2026).^[5]