Bulk Gravel, Rock and Garden Soil Delivery in Fremont, CA

Yolo Silt Loam at the Center Point

The USDA soil survey maps the center point of ZIP 94536 as Yolo silt loam, 0 to 3 percent slopes, dry, MLRA 14. The Yolo series makes up 85 percent of that unit. Its top mineral layer is silt loam, and the survey rates it well drained.^[1]

The Yolo soil sits in hydrologic group B, moderate infiltration, and its shrink-swell is low, at 2.4 percent in the top 100 cm. Water soaks in at a steady pace, and the soil barely changes volume between the wet winter and the dry summer. Deep, soft silt loam of this kind is easy to dig and among the better garden soils anywhere.^[1]

Silt loam has one weakness worth knowing. When it is dry, foot traffic and tires grind it to fine dust, and when it is wet, it turns slick and ruts. Any path, pad or drive here needs a stone surface on a compacted base instead of bare soil.^[1]

The slope of 0 to 3 percent is gentle, and the ground at the center point stands 70 feet above sea level. On ground this flat, give every new surface a slight fall so winter rain keeps moving.^[1],[2]

A Mild Climate With a Dry Summer

The NOAA normals station Fremont, CA, about 2 miles from the center point, averages 15.9 inches of precipitation a year and 0.0 inches of snow. Nearly all of that rain falls in the cooler months, and summers are long and dry.^[3]

Frost is rare. The Fremont station logs 3 days a year with a low of 32 F or colder. The median last freeze date there is January 7, and the median first freeze date is December 22.^[3]

That pattern rewards two habits. In winter, make sure water from roofs and paving drains away rather than pooling on flat ground. In summer, cover bare soil with rock or mulch and water deeply, so the moisture that silt loam holds stays in the root zone instead of escaping into dry air.^[3]

A dry climate also means lawns take a lot of water to keep green. Many owners swap part of a lawn for rock beds and drought-tolerant planting. The silt loam here makes that easy, since plants root quickly in it, and a layer of stone over fabric between the plants keeps the soil cool and the weeds down.^[1],[3]

Gravel Surfaces That Stay Put

A side-yard drive or a parking pad on silt loam starts with stripping the topsoil and compacting the subgrade. Lay a woven fabric to keep silt from rising into the stone after a soaking winter storm. Build a base of Road Base or Crushed Concrete in thin, wetted, compacted lifts.^[1],[3]

For the top, 3/4" Crushed Stone or Driveway Gravel gives a clean, firm surface. 1-1/2" Crushed Gravel handles heavier vehicles. Asphalt Millings pack harder each summer as the heat softens the old binder, which makes them a good fit for a dry climate. Crown the surface and keep a shallow swale along the low edge.^[3]

Caltrans keeps its own written standard for the crushed rock layer under California roadways. That standard is Class 2 Aggregate Base, Section 26-1.02B, found in the Caltrans Standard Specifications (2026).^[4]

A home pad does not need a highway book to work well. Thin lifts, steady moisture during compaction, and a base that drains toward the edges carry most of the load. Rent a plate compactor for the day, wet each layer until it darkens but does not puddle, and make several passes before adding the next.^[1]

Choosing Between Decomposed Granite and Pea Gravel

For paths and sitting areas, two materials come up again and again: Decomposed Granite and Pea Gravel. Decomposed Granite is crushed rock with fines that packs into a firm, nearly smooth surface when it is wetted and compacted. It suits wheelchairs, strollers and patio furniture, and it stays put on a gentle slope.^[1]

Pea Gravel is small, rounded stone. It feels soft underfoot, drains instantly and looks relaxed around a fire pit or under fruit trees. Its round shape means it shifts under weight, so it needs firm edging and is less suited to wheels or chair legs.^[1]

A simple rule helps. Choose Decomposed Granite where people walk, roll or set furniture, and Pea Gravel where the look and the drainage matter more than a hard surface. Each one works best over a compacted base on silt loam, which keeps the soil below from mixing into the stone.^[1]

Other materials fill in around those two. 3/8" Crushed Stone and Walkway Gravel sit between them, firmer than Pea Gravel but looser than a packed granite surface. Stone Dust Screenings fill the joints of a flagstone path and harden as they are wetted and tamped. Mason Sand works for tight joints in a brick walk.^[1]

Gardens on Deep Silt Loam

Yolo silt loam is fertile and holds water well. Vegetable beds and orchards on it need only a yearly dressing of Compost to stay productive. Garden Soil fills raised beds and large containers where paving covers the native ground.^[1]

With 15.9 inches of yearly precipitation at the nearby station, summer gardens rely on irrigation. A layer of Brown Shredded Mulch or Wood Chips over beds slows evaporation, keeps roots cool and stops the silt surface from crusting. Red Mulch brightens a front bed. Mulch breaks down steadily in a mild climate, so plan to renew it each year.^[3]

Topsoil is the right material for leveling a lawn, building a berm or filling a low spot before planting. Fill Dirt suits deeper grade changes, capped with a layer of Topsoil so plants can root.^[1]

Fruit trees and shrubs on deep silt loam benefit from a wide ring of mulch that reaches out toward the drip line. The mulch keeps the soil under the canopy cool and moist through the dry months, so a deep watering lasts longer. Pull it back a hand's width from the trunk to keep bark dry.^[1],[3]

Homes in ZIP 94536

The Census counts 26,533 housing units in ZIP 94536. Detached single-family houses make up 54 percent of them. Fremont as a whole has 81,579 housing units, with detached houses at 56 percent.^[5]

The median home in ZIP 94536 was built in 1975, a little earlier than the citywide median of 1979. Owners live in 59 percent of the occupied homes in the ZIP. Common projects in a neighborhood like this include lawn-to-rock conversions, side-yard parking pads, new paths and raised vegetable beds.^[5]

Play areas and vegetable plots are frequent backyard additions. Playground Sand inside a timber border makes a soft, clean play space that drains well. A vegetable plot beside it can be built as a few raised beds of Garden Soil, with Wood Chips or Pea Gravel on the paths between them.^[1],[5]