2A Modified, Sand and Gravel Delivery in Lancaster County, PA
Storm runoff scours stream banks, washes out ditches and cuts into sloped gravel drives across Lancaster County. Pennsylvania Rock Supply delivers the stone that answers it, plus gravel, stone and aggregate delivery in Lancaster County, PA for base work and drainage alike.
Start with 2A modified. It is the standard Pennsylvania base stone, crushed stone with the fines left in so it compacts hard. Heavy clay soils over limestone valleys make compaction and drainage the whole job here.
Materials Delivered in Lancaster County
Pennsylvania yards buy stone by size, and Lancaster County is no different. Coarsest to finest, this is what gets ordered for base work, drainage and finishing.
2A modified carries the most weight in this market. It is the trade name for a 2A-type base with extra fines added. Order it for drives, pads and any base that has to lock up hard. Crusher run does the same job when a buyer asks for it by that name. Crusher Run is crushed stone with fines mixed in, and most Pennsylvania buyers land on 2A modified for the same work.
For drainage, 2B stone and #57 Stone are the same size under different names. Both are clean, washed and free of fines. Use them behind retaining walls, in French drains and on shed pads in wet ground.
Ground Conditions Across Lancaster County
Lancaster County sits on mixed Piedmont ground: loamy soils weathered from schist and gneiss on the uplands, red shale and sandstone in the lowlands, and limestone valleys whose soils weather to heavy clay. A narrow strip along the Delaware River runs to loose sand and gravel instead of rock.
That mix drives material choices. Clay valleys hold water, so a base there needs clean stone under it to drain. Loose sand and gravel strips drain fast but shift, so compaction matters more than drainage.
Winters bring repeated freeze-thaw cycles. Frost depth runs about 30 to 36 inches, set by each municipality, and the City of Philadelphia uses 30 inches. Even where frost does not reach as deep as in most of the state, a thin or poorly drained base can heave and break up.
Time base, driveway and paver work from spring, once the ground has thawed and dried, into late fall. Base stone should not go down on frozen, soft or muddy ground.
Heavy summer storms and spring rain run off built-up ground under municipal stormwater rules. Over limestone, runoff concentrated from roofs, gutters and drives can open sinkholes. That is a limestone-valley issue, not one that reaches every part of the county.
Storm runoff from paved ground scours stream banks and washes out ditches, culvert outlets and sloped gravel drives. Riprap by R-number armor those spots, with R-4 for ditches and larger sizes for banks.
Delivery Across Lancaster County
Pennsylvania Rock Supply covers Lancaster County, from Lancaster and Lititz to Ephrata, Elizabethtown, Columbia, Willow Street, Millersville, Mount Joy, Leola, Pequea, New Holland, Manheim, East Petersburg and Akron. Order online and a dump truck delivers to the site.
Size the load by the ton or by the yard, and use the calculator to work out the quantity. Pick your delivery date at checkout. Have the drop spot clear and reachable so the truck can tailgate or dump where the material is needed.
Order base and drainage stone together when you can. The truck can usually place separate piles, which saves a second trip for a driveway and patio job.
Choosing the Right Material
Ground next door changes the material call. Lebanon County sits partly in the Great Valley and Ridge and Valley zone, with folded bedrock, long sandstone ridges and thin, stony soils. Valleys there are floored by shale or by limestone and dolomite that weather to clay. Thin stony ground drains better than Lancaster County clay, so a Lebanon base leans less on a clean drainage layer underneath.
Berks and Dauphin counties both span the Southeastern Piedmont and Delaware River lowland zone that Lancaster County sits in, plus the Great Valley and Ridge and Valley zone. Where the zones overlap, the ground is similar to Lancaster County and the same 2A modified base and clean stone drainage apply. Compare typical projects instead of soil. A limestone valley job in any of the three calls for the same base and drainage reasoning.
Order 2A Modified and Bulk Stone in Lancaster County
Pennsylvania Rock Supply delivers gravel, stone, sand, topsoil and mulch across Lancaster County, from Lancaster and Ephrata to Columbia, New Holland and Pequea. Choose your material, size the load by the ton or yard, and pick a delivery date at checkout. Place your order online and get the base and drainage stone your job needs.