A safer, cleaner way to dig built for Arizona’s conditions
Vacuum (hydrovac or air-vac) excavation has become the preferred non-destructive digging method for commercial, industrial, and municipal work across Arizona. It limits utility strikes, keeps surfaces intact, and speeds inspections—key advantages when you’re navigating caliche, congested corridors, or monsoon-related drainage constraints.
New to Bunney’s? Learn who we are and explore our capabilities.
What vacuum excavation is (and when to use it)
Vacuum excavation uses a controlled stream of pressurized water or air to loosen soil while a high-powered vacuum conveys material to a debris tank. It excels at:
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Utility location & daylighting (visual verification within the tolerance zone)
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Potholing and test holes for design & as-built confirmation
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Slot trenching for conduit and small-diameter pipe
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Trenching near sensitive infrastructure and foundations
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Vault, sump, and pit cleaning; debris and ballast removal
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Exposing tie-ins around live plants and operating facilities
Why Arizona contractors prefer hydrovac
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Lower strike risk: Non-destructive methods reduce utility damage, outages, and claims.
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Surface protection: Minimal disruption around pavement, hardscape, and landscaped areas.
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Better QA/QC: Clean daylighting improves documentation and speeds inspections.
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Monsoon-ready: Tighter spoils control keeps urban work zones cleaner and safer.
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Compliance support: Aligns with Arizona utility-protection rules and project safety plans.
How to evaluate vacuum excavation companies (quick checklist)
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Relevant experience: Commercial/industrial scope, live-site work, and tolerance-zone digging.
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Fleet capability: Modern hydrovac trucks (water & air), hot-water options, long-reach booms.
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Safety record: Operator qualifications, OSHA compliance, documented JHAs/JSAs, near-miss reporting.
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Controls & documentation: Utility maps, pothole logs, photo records, traffic control plans, SWPPP awareness.
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Disposal plan: Permitted dump sites, manifests, and slurry handling that meets local requirements.
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Responsiveness: Dispatch capacity for emergency calls, night work, or phased outages.
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Local expertise: Knowledge of caliche, expansive soils, dust control, and monsoon-season constraints.
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Insurance & licensing: Adequate limits and current credentials for public and private work.
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Pricing transparency: Clear hourly/volume rates, travel, disposal, and standby policies.
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References: Recent, comparable Arizona projects you can verify.
What to expect from a professional provider
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Pre-task planning: 811 tickets, utility maps, site walk, traffic & access plan.
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Field execution: Controlled cut, continuous vacuum, spoil containment, and utility verification with photos.
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Closeout: Backfill or protection per spec, site cleanup, and documented locations for records.
Cost & schedule drivers (so you can plan accurately)
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Depth of excavation, soil type (caliche/rock vs. native), and required trench width
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Water vs. air excavation (and hot-water needs)
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Access constraints, lane closures, and traffic control requirements
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Volume and classification of spoils; distance to permitted disposal sites
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After-hours work, plant/outage windows, and inspection coordination
Bunney’s Inc. vacuum excavation for Arizona’s industrial & commercial work
Serving businesses across Arizona from our Phoenix base, Bunney’s Inc. focuses on non-residential hydrovac support: large construction sites, utilities and public works, plant maintenance, and infrastructure upgrades. Expect trained operators, well-maintained trucks, rigorous safety, and clean documentation that keeps your project moving.
FAQs
Q1: What’s the difference between air-vac and hydro excavation?
Air uses compressed air to loosen soil and preserves dry spoils for backfill. Hydro uses water (cold or hot) to cut faster in tight or compacted soils. Your site conditions and backfill plan typically decide the approach.
Q2: Do I still need to call 811 before hydrovac starts?
Yes. One-call tickets are required. Hydrovac verifies and refines utility locations within the tolerance zone after line-locate marks are placed.
Q3: How fast is vacuum excavation?
Production varies with soil and access. Expect a few to 20+ test holes per shift; slot-trench rates depend on width/depth, caliche, and traffic control.
Q4: What happens to the slurry or dry spoils?
Your contractor should handle approved transport and disposal. In some cases, dry air-vac spoils can be reused if specifications allow.
Q5: Is hydrovac suitable near critical facilities (plants, hospitals, data centers)?
Yes. It’s often preferred due to reduced vibration, precision, cleaner work zones, and better coordination with live systems.
Q6: Can you work during monsoon season?
Generally, yes—planning focuses on drainage, spoil containment, and weather windows. Expect schedule flexibility for storm events.
Q7: Do you provide traffic control?
Professional providers coordinate MOT plans, lane closures, and flagging as required by the jurisdiction and project specs.
