Mass excavation is the single biggest variable in commercial site development. A 50,000-cubic-yard cut on clean sand runs completely different numbers than the same volume through glacial till loaded with cobbles. In Central New York, you're almost never working clean sand.
Excavation Costs by Soil Type
| Soil | Cost/CY (Cut Only) | Production (CY/hr) | Notes |
|---|---|---|---|
| Common Earth | $3.50 – $6.00 | 200 – 350 | Topsoil, loam, fastest production |
| Stiff Clay | $5.00 – $9.00 | 120 – 250 | Onondaga Lake plain clay |
| Glacial Till (mixed) | $7.00 – $14.00 | 80 – 180 | Cobbles and boulders slow bucket cycles |
| Weathered/Fractured Rock | $12.00 – $22.00 | 40 – 100 | Rippable with D8; hydraulic breaker on larger pieces |
| Solid Rock (blasting) | $18.00 – $35.00+ | Varies | Licensed blaster, separate mobilization |
Cut-only numbers, loading or stockpiling. Don't include hauling, disposal, or compaction. A project that looks like $4/CY in common earth can triple when geotech shows 8 feet of glacial till on limestone at target subgrade. Full excavation details.
Hauling Costs
| Distance | Cost/CY | Round Trip |
|---|---|---|
| On-site (under 1,000 ft) | $1.50 – $3.00 | 5 – 8 min |
| 1 – 5 miles | $4.00 – $7.00 | 20 – 30 min |
| 5 – 15 miles | $6.50 – $11.00 | 30 – 50 min |
| 15 – 30 miles | $10.00 – $16.00 | 50 – 80 min |
| 30+ miles | $14.00 – $22.00+ | 80+ min |
Self-hauling vs brokered trucking: $2-$4/CY difference. On 20,000 yards, that's $60,000. We run our own tri-axle and quad-axle fleet, no broker middleman, no markup, no scheduling gaps.
Fill Import and Compaction
| Fill Type | Material/CY | Delivered/CY (10-mi avg) |
|---|---|---|
| Common Fill | $4 – $8 | $8 – $14 |
| Select Granular (Item 4) | $12 – $18 | $18 – $26 |
| Structural Fill (engineered) | $14 – $22 | $22 – $32 |
| Recycled Concrete / RAP | $6 – $12 | $12 – $18 |
| Compaction | Cost/CY | Notes |
|---|---|---|
| Standard (8-12" lifts) | $1.50 – $3.50 | 95% Proctor typical |
| Moisture conditioning (dry) | $0.75 – $2.00 | Water truck, late summer |
| Moisture conditioning (wet) | $1.50 – $4.00 | Aerate and dry-back, spring/fall CNY reality |
| Proof rolling | $0.50 – $1.25 | Loaded dump truck grid, identifies soft spots |
How Cut/Fill Balancing Works
The ideal: every yard you cut gets placed as fill on the same property. No material leaves, no import. Hauling stays on-site at $1.50-$3/CY instead of $8-$16 off-site.
Three factors push CNY sites out of balance:
Shrinkage and swell. Soil swells 15-30% when excavated, shrinks below original volume when compacted. Engineers apply 1.15-1.30 shrink factor, a "balanced" site on paper actually needs 15-30% more cut.
Unsuitable material. Organics, peat, highly plastic clay, till with oversized boulders all get classified unsuitable. Must leave and be replaced with engineered fill. 4 feet of organics across a 3-acre pad = ~19,000 CY of waste-and-replace.
Building envelopes. Basements, detention ponds, utility corridors create net export. A 40,000 SF building with 8-ft basement generates ~12,000 CY of export with nowhere on-site to go.
Central New York Soil Conditions
Glacial till everywhere below topsoil. Camillus to Cicero, DeWitt to Liverpool, unsorted mix of clay, silt, sand, gravel, cobbles, boulders. Bucket teeth catch on cobbles, cycle times increase 30-50%. Rock excavation approach needed for larger embedded boulders.
Onondaga limestone close to surface in southern hills. Seneca Turnpike corridor, Onondaga Hill, Skaneateles, bedrock within 6-10 feet. Cuts below that mean breaking or blasting.
Syracuse valley = dewatering. Onondaga Lake, Inner Harbor, I-81 corridor, water tables 2-3 feet down. Dewatering adds $5,000-$30,000+ plus DEC discharge permits.
Seasonal moisture extremes. 40+ inches annual precipitation. Spring subgrades saturated through May. Compaction testing fails, lift gets stripped and re-placed. Schedule mass earthwork June-October when possible.
GPS Machine Control
Standard on any cut over 5,000 CY. GPS receiver on the excavator or dozer reads design surface in real time, operator sees exactly how deep to cut, down to a tenth of a foot. No grade stakes to wait for, no re-staking after rain.
On a 30,000-yard cut, GPS reduces overcut by 8-15%. At $10/CY combined cut-and-fill cost, reducing overcut by 3,000 CY saves $30,000. GPS rental and calibration: $2,500-$5,000. Math works every time on large cuts.
We run GPS-equipped dozers and excavators on all commercial site prep.
Equipment Sizing
30-ton class (CAT 330, Deere 300G): Workhorse for most commercial CNY excavation. 18-20 ft cut depth, handles till and weathered rock. 150-250 CY/hr. Projects under 15,000 CY.
50-ton class (CAT 352, Deere 470G): Larger cuts, deeper excavations, harder material. Extra hydraulic force drops cycle times 20-30% in dense till. 200-400 CY/hr. 15,000-50,000 CY projects.
80,000 lb+ class (CAT 374, Hitachi EX750): Major earthwork, highway corridors, 50,000+ CY. Loads a 40-ton artic in 3-4 passes. Mobilization alone: $5,000-$12,000. Volume must justify it.
Supporting: D6/D8 dozers for grading, vibratory rollers (smooth drum for granular, padfoot for cohesive), motor graders for finish, water trucks for dust/moisture.
Volume Calculation Basics
Engineers compare existing grade (topo survey) to proposed grade (grading plan). Average end area method: site divided into cross-sections at 25-50 ft intervals, area between surfaces calculated per section, volumes summed. Modern software (Civil 3D, Carlson, Agtek) does this from 3D surface models.
Plan quantities are estimates. A geotech report with 8 borings on 10 acres samples ~0.001% of the subsurface. The rest is interpolation. This is why excavation contracts include unit price adjustments, and why a contractor who's dug in CNY for years matters more than the lowest bid number. Grading services.
Frequently Asked Questions
How much does mass excavation cost all-in per cubic yard?
$6-$18/CY for common earth and clay (cut, load, haul, dispose). $20-$45+/CY with rock. Biggest variable: haul distance. A balanced site runs 40-60% cheaper than full export to a facility 15 miles away. Glacial till with boulders typically falls $12-$20/CY including loading and short-haul.
What's the difference between cut and fill?
Cut = material removed (existing grade down to proposed). Fill = material added (existing grade up to proposed). Balanced site means cut equals fill after shrinkage factors. Most CNY commercial sites don't balance due to unsuitable soils, basements, or stormwater features creating net export.
How do glacial conditions affect costs?
Glacial till increases costs 40-100% over clean common earth. Slower bucket cycles from cobbles, hydraulic breaker needed for boulders, material often unsuitable for structural fill (must be exported and replaced). Dominant subsurface material across Onondaga, Oswego, Cayuga, and Madison counties.
When does a project need rock excavation?
When proposed subgrade falls below top of bedrock. Southern hills (Onondaga Hill, Pompey, Tully) have shallow rock. Valley sites along I-81/I-690 typically have deeper overburden. Rock shallower than predicted is one of the most common change order triggers in CNY.
Get a Mass Excavation Estimate
Call (315) 400-2654 with your geotech and grading plans. We self-haul, run GPS on every large cut, and have been digging through CNY glacial soils for years. 25 five-star reviews.