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GPR Services · Fraser Valley

Pre-Excavation Scanning in Chilliwack, BC

The last check before the bucket goes in — full-corridor GPR + EM sweep of the dig zone for utilities, tanks, and obstructions. Serving Chilliwack and the Fraser Valley region with certified technicians, non-invasive methods, and insurance-ready documentation — since 1999.

GPR + EM
Dual sweep
0.3–4 m
Coverage depth
Same-day
Marks + report

Free phone consult · No pressure · Mon–Sat 8am–6pm PT

Chilliwack ground conditions & what they mean for GPR

Local geology: Chilliwack sits on Fraser floodplain gravels and sands with mountain-fan gravels at the valley edges. Free-draining floodplain gravels are superb GPR ground — 3–4 m penetration is routine, among the best in the Lower Mainland.

Local building stock: Dairy and berry operations, fast-growing Sardis subdivisions, and military lands with legacy buried infrastructure.

Common pre-excavation scanning work in Chilliwack

  • Deep utility mapping in floodplain gravels
  • Dairy operation waterline tracing
  • Subdivision pre-dig locates in Sardis
  • Excavation contractors
  • Pool and foundation digs
  • Service trench routing

How the Chilliwack site visit works

  1. 1

    Walk the dig plan

    Corridor and depth of the planned excavation define the survey footprint, with a safety margin.

  2. 2

    Dual-technology sweep

    EM finds live and conductive services; GPR finds plastic lines, tanks, duct banks, and the abandoned surprises.

  3. 3

    Mark everything

    Industry-standard colour codes on the ground; depth estimates flagged where targets cross the dig.

  4. 4

    Clearance documentation

    Photo-documented marks and a written report — the contractor's damage-prevention record.

Chilliwack questions, answered

We already called BC One Call. Why scan privately?

One Call marks public utilities to the property line and only those registered. Private services — irrigation, gas to outbuildings, landscape lighting, old septic, abandoned lines — are invisible to it. Most strikes happen on exactly those, and liability lands on whoever dug.

What do you find most often that records miss?

Abandoned-in-place services, owner-installed plastic gas and water runs, buried oil tanks in pre-1965 neighbourhoods, and duct banks that left the drawings decades ago. Every one is a strike that didn't happen.

How close to your marks can the machine dig?

Standard practice: mechanical excavation to within 60 cm of a mark, hand exposure from there. Our depth flags tell the operator when targets enter the cut profile.

Can you scan the morning of the dig?

Yes — same-day scans within business hours are routine. Marks go down, photos are taken, the report follows by email, and the excavation proceeds the same morning where scheduling allows.

How deep can GPR scan in Chilliwack?

Chilliwack sits on Fraser floodplain gravels and sands with mountain-fan gravels at the valley edges. Free-draining floodplain gravels are superb GPR ground — 3–4 m penetration is routine, among the best in the Lower Mainland. We select antenna frequency to match — and where local ground limits radar depth, we pair GPR with electromagnetic locating, acoustic methods, or tracer gas so the survey objective is met regardless of soil conditions.

Do you actually work in Chilliwack, or dispatch from elsewhere?

Chilliwack is part of our standing Fraser Valley service area — the same certified technicians and equipment that cover the rest of the region. Scheduling is typically within 24–72 hours, with same-day response often possible during business hours (Mon–Sat, 8am–6pm Pacific).

What does pre-excavation scanning cost in Chilliwack?

Pricing matches our province-wide structure — no regional premium for Chilliwack. Most residential-scale work falls in the $350–$1,200 range depending on scope; commercial and multi-site projects are quoted after a free phone consult. Call 604-239-9934 and we will give you a tight estimate in five minutes.

Need pre-excavation scanning in Chilliwack?

Free phone consult with a certified GPR technician — we will tell you whether a survey is warranted and quote it in five minutes. No pressure.

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