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Request a Locate in Sarnia
Turning a field locate into a permanent CAD, GIS, or coordinate record that outlives the paint.
In Sarnia, Ontario — population 72,047, with buried infrastructure laid down over decades and recorded unevenly — utility mapping is how a site gets read before anyone breaks ground. Local petrochemical, manufacturing, construction work drives most of the demand.
Utility mapping is the locate plus the record. Field crews trace the lines the same way they would for a marking job, then capture every mark as a coordinate with survey-grade GNSS or a total station instead of leaving it as a paint dot. The output is a layered drawing, a GIS layer, or a point file tied to real survey control, annotated by quality level so a designer knows which positions were traced and which were physically verified. Paint is gone in a few weeks of weather and traffic; a map stays with the property and can be re-staked years later.
Project-planning data for Sarnia, ON — soil, climate, and regulatory factors that shape how locating crews scope work in this market.
Sarnia sits in a humid continental climate, with winter ground freeze reaching 36 inches — frost changes what ground penetrating radar returns, and it stops paint from bonding, so cold-season work leans on recorded offsets and coordinates. Local ground: Clay, Loam. Soil conductivity is the variable that decides how much of a locate radar can contribute, because conductive ground absorbs the radar pulse instead of reflecting it. Primary industries — petrochemical, manufacturing, construction — drive steady demand for utility mapping across the Lambton County area.
Ontario One Call (1-800-400-2255) requires advance notice — confirm the exact period with them before any excavation in Ontario. That notification is free and it is separate from utility mapping: it brings out the member facility owners to mark the lines they own, and stops at the meter or the right-of-way. Wait for every member to respond before ground is opened.
Locating is quoted per job rather than off a rate card, because the work is a search and a search scales with the site rather than with the clock. On a Sarnia job, the things that move the number are how much ground has to be covered, how many targets are in play, whether there are meters, valves, risers, or panels a transmitter can be clipped to, what the lines are made of, what the local ground (clay, loam) does to the instruments, and whether you need surface marks or a record you keep.
Describe the job once through Utility Hotline. Our team reviews the request, then locating companies covering Sarnia and Lambton County send you their own quotes, so you are comparing them against the same scope. It is free to request.
Tell us about your project and we’ll send your request to locating companies that handle utility mapping in Sarnia.
Get Free QuotesCommon questions about private utility locating in Sarnia
Finding and marking the buried lines on the owner side of the meter, the ones a one-call ticket does not cover.
ASCE 38 quality-level deliverables — records research, field designation, and test-hole verification, sealed by an engineer.
APWA color-coded paint and flags on the ground so the crew about to dig can see what is under them.
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Ontario One Call — Always call 1-800-400-2255 before excavation.
