Rock Doesn't Scare Us.
Austin, TX & Salt Lake City, UT · Hydraulic Hammer On-Site
Austin limestone. Caliche ledge. SLC hardpan. Every project gets a ground conditions assessment before we mobilize — so when we hit rock, it's already in the plan, not a phone call that wrecks your schedule.
The Ground in Austin &
Salt Lake City Isn't Soft.
Most of the country digs through soil. Austin and Salt Lake City make you earn it. These are the three formation types we encounter on nearly every residential and commercial excavation project.
Austin Limestone & Edwards Formation
The bedrock under most of Austin. From the surface in some Cedar Park and Westlake lots, to 8+ feet down in South Austin fill areas. Chip-and-break technique with hydraulic hammer — not blasting, no vibration risk to structures.
Caliche Layer
Calcium carbonate hardpan that forms a near-concrete layer typically 4–7 feet down. Stops standard excavation buckets cold. We identify caliche during site assessment, not when the machine stalls. Hydraulic hammer breaks it efficiently.
Hardpan Clay & Cobble
SLC's Wasatch Front soils compact into dense hardpan with glacial cobbles embedded throughout. Cobble behaves like distributed rock — it needs to be extracted, not pushed. Standard machines bog down. Correct technique and the right attachment matter.
Rock Excavation
From Assessment to Haul.
Pre-Dig Ground Assessment
Before any equipment is scheduled, we walk the site and assess likely ground conditions based on neighborhood geology, lot topography, and any prior excavation history. You get a clear picture — and a price range — before commitments are made.
Hydraulic Hammer Breaking
Chip-and-break technique for limestone ledge, caliche, and hardpan. No blasting, no vibration risk to adjacent structures. Hydraulic hammer is on the excavator before we mobilize on any site flagged for rock — not ordered after the standard bucket fails.
Rock Spoil Haul & Disposal
Rock spoil is dense — it fills trucks faster and weighs more per yard than soil. We quote rock haul separately when volumes are significant. Disposal at approved sites. No rock pile left on your client's property.
Profile Finish After Rock
Breaking rock is one thing. Hitting the specified grade and profile after it's broken is another. We finish to dimension — pool spec, foundation engineer plan, or rough grade elevation — not just "down to where the rock was." Tolerances communicated before the dig starts.
Right Tool.
Right Job. First Time.
Hydraulic Hammer Attachment
Mounted directly on the excavator arm. Delivers high-impact breaking force for limestone ledge and caliche layers. No secondary equipment mobilization — the hammer comes with the machine on rock-flagged sites.
Compact Excavator (Tight Access)
For residential lots where site access limits larger machine movement. Handles rock breaking at smaller scale without sacrificing capability. Side yard clearance down to 36 inches depending on site layout.
Full-Size Excavator + Rock Bucket
For large site cuts, commercial foundations, and high-volume rock removal. Paired with heavy-duty rock bucket teeth for ripping through softer limestone before the hammer is needed. Maximizes efficiency on larger projects.
Assessment to
Clean Handoff.
Quote + Ground Conditions Review
We quote based on your project type, location, and any available site information. For Austin projects, we give a base quote plus a rock range — not a single number that collapses when caliche shows up at 5 feet.
Pre-Mobilization Site Assessment
We walk the lot before anything is scheduled. Ground conditions, access, overhead clearance, utility locate, spoil staging. Any rock flags get communicated before you commit your subcontractors to a start date.
Equipment Selection + Mobilization
Machine and attachments confirmed for the conditions. Hydraulic hammer staged if rock is expected. We don't show up with a standard bucket on a known limestone site — that's how a 2-day job becomes a 6-day job.
Break + Excavate to Grade
Rock broken, excavated, and staged for haul. Profile finished to spec — pool dimension, foundation engineer plan, or rough grade elevation. If unexpected conditions appear mid-dig, we stop, photograph, and call you before proceeding.
Haul + Site Handoff
All rock spoil removed. Site staged clean for the next trade. Final photos sent before demobilization. Your shell crew, foundation crew, or concrete team arrives to a site that's ready — not a site with a rock pile in the way.
What Rock Excavation
Actually Costs Here.
Rock excavation pricing depends on formation type, depth, volume, and access. These ranges reflect actual Austin and Salt Lake City projects — not national averages from places where the ground is soft.
| Project Type | Rock Condition | Market | Est. Rock Add-On |
|---|---|---|---|
| Pool Shell (16×32) | Light caliche, no ledge | Austin | $2,500 – $5,000 |
| Pool Shell (16×32) | Limestone ledge at bench depth | Austin | $6,000 – $12,000 |
| Pool Shell (Freeform) | Heavy caliche + limestone | Austin | $10,000 – $18,000 |
| Foundation Cut | Caliche layer through footer depth | Austin / SLC | $3,500 – $9,000 |
| Foundation Cut | Limestone ledge at footer depth | Austin | $7,000 – $16,000 |
| Utility Trench (100 LF) | Caliche or hardpan throughout | Austin / SLC | $2,000 – $6,500 |
| Full Site Grade (0.5 ac) | Rock formation through cut depth | Austin | $12,000 – $28,000 |
| Hardpan / Cobble Removal | SLC Wasatch bench conditions | Salt Lake City | $4,000 – $14,000 |
| Hard Rock | Rock formation through cut depth | Austin | $65–$90/CY (large cuts $100,000+) |
Built for the Trades
That Hit Rock First.
Your Dig Spec, Our Problem
Pool shell excavation in Austin means caliche is a near-certainty. We bring the hammer and the assessment so your shell schedule doesn't move. Preferred sub rates for volume partners.
Foundation Cuts in Rock Country
Foundation excavation through limestone and caliche is a different job than soil. We quote the rock range upfront so you're not the one explaining a change order to your client six weeks into the build.
Tight Lots, Hard Ground
Infill projects in Austin's central neighborhoods often combine difficult access and rock conditions. Compact equipment, hydraulic hammer, and clean haul — no pile left on a lot that doesn't have room for one.
What Contractors
Ask About Rock.
Site walk, neighborhood geology, lot topography, and any prior excavation reports or soil borings you can share. Austin's formation maps give us a solid baseline. We also just ask — most experienced contractors in Austin know their site's rock history.
We quote rock jobs by the project, not by the day or the yard — because production rate varies too much with formation type. You get a range upfront. No day-rate billing that leaves you holding an open-ended invoice.
No. Hydraulic hammer only — chip-and-break technique. No blasting permit, no vibration risk to adjacent structures, no coordination with neighbors. Appropriate for residential and urban infill sites.
We stop, photograph the condition, and call you before continuing. You get a revised number and make the call. No crew plowing through and handing you a bill you didn't agree to.
Yes. Compact equipment for tight access, hydraulic hammer for rock near structures. Chip-and-break creates no meaningful vibration risk at residential scale distances. We confirm clearances on site walk.
Yes. SLC hardpan and cobble behave differently from Austin limestone — dense but not ledge rock. Equipment selection and technique change accordingly. Same process: assess before mobilizing, confirm conditions, quote the reality.
Know What You're
Getting Into Before You Quote It.
We'll walk the site, assess the ground conditions, and give you a number you can build a schedule around. No surprises after the dig starts.
Austin, TX · Salt Lake City, UT · Licensed + Insured