TRACE: ACTIVE   DEPTH 3.5 FT   SITE_0451
Underground Utility Locating
Find the lines 811 won’t.

Private underground utility locating with ground penetrating radar and electromagnetic locating. We find the water, sewer, gas, electric, and communication lines, including the private ones 811 never marks, and paint them on the ground before you dig, trench, or bore. Serving all of Washington from Seattle and the Orlando metro in Central Florida, typically next-day.

★★★★★ 5.0 GoogleBeyond 811, private linesWA + FL
RAINIER-GPR · LIVE LOCATE● REC
Live GPR utility locate, subsurface data with the utility run traced on the site map
TRACE 142 FT  ·  DEPTH 3.5 FT  ·  UTILITY MAPPED
RainierGPR PinPointR GPR unit on APWA-marked pavement, SR-405 interchange locate
★ 5.0
Google reviews
5,000+
Jobs documented
2
States served
0
Lines struck blind
RainierGPR technician locating underground utilities with ground penetrating radar
ON SITE · GPR + EM UTILITY LOCATING
What it is

A map of what’s under the dirt: before you break it.

Ground penetrating radar and electromagnetic locating find buried utilities in minutes, and mark them on the ground before the first shovel or bit goes in.
01

How it works

We combine two tools. Electromagnetic locating traces conductive lines (power, metal pipe, and tracer-wired utilities) by their signal. Ground penetrating radar fills in everything else: PVC, concrete, clay, fiber, and even abandoned lines that carry no signal at all. Together they build a full picture, marked on the surface in APWA color code.

02

Why it matters

A single strike shuts a job down. Cut a live power line and it’s a safety incident; hit a gas line and you’re evacuating the block; nick fiber and the change order runs into five figures. Locating first is the cheapest insurance on the site. A couple of hours that keeps an excavator out of a line nobody knew was there.

Beyond 811

811 marks the public lines. We find the rest.

811 is free, required by law, and it works, for public utilities. Call it, and the utility companies mark their lines from the main to your meter. Everything past the meter is yours, and it’s invisible to 811. That’s where most strikes happen, and that’s exactly what we locate.

811 COVERS

Public lines to your meter

  Utility-owned water, gas & power mains
  Public sewer & storm to the connection
  Telecom to the demarcation point
  Marked free, but only up to the meter
WE COVER

Everything past the meter

  Private electrical to garages, gates & lighting
  Gas runs to pools, generators & fire pits
  Irrigation, reclaimed water & site plumbing
  Private fiber, comms & abandoned lines
What we locate

Every buried utility: marked in APWA color code.

We paint located lines on the ground in the same uniform color code your crews already read, so the site is safe to dig the moment we leave.

Electric
Power, conduit & lighting cable
APWA RED
Gas & oil
Gas service & petroleum lines
APWA YELLOW
Potable water
Water mains & service lines
APWA BLUE
Sewer & storm
Sanitary & storm drainage
APWA GREEN
Telecom & fiber
Phone, CATV & fiber optic
APWA ORANGE
Reclaimed & private
Irrigation, reclaimed & abandoned
APWA PURPLE
APWA paint marks over located underground utilities on pavement
OUR ACTUAL MARKS · APWA PAINT OVER LOCATED LINES · SR-405 INTERCHANGE
How it works

Locate. Mark. Map.

01
ON SITE

We locate

A technician sweeps the site with GPR and electromagnetic locating, tracing every line and reading depth live on-site, public and private, conductive and non-conductive.

02
APWA CODE

We mark

Every located line goes onto the ground in APWA color code with depth notes, so your crew can trench, bore, or dig with the whole map painted in front of them.

03
ON RECORD

We map

You get a documented record of what we found and where: marks on the ground for the crew, and a report for the GC, the engineer, and the permit file.

Real locates

Locates from the field, not stock photos.

A few recent utility-locating jobs. Every one is documented, real RainierGPR work, not a stock library.

Underground utility locating on the SR-405 interchange project

SR-405 interchange

PRE-EXCAVATION LOCATE · WASHINGTON
Underground utility locating at St. Mark's Cathedral, Seattle WA

St. Mark’s Cathedral

SITE UTILITY MAP · SEATTLE WA
Utility locating for a helipad relocation project

Helipad relocation

PRIVATE UTILITY LOCATE · WA
What contractors say

A 5.0-star crew, in their words.

★★★★★

Rainier GPR came out and located some mystery runs of pipes and buried wires under a slab. (An old DIY radiant heat floor) They were extremely easy to work with, and relatively cheap considering what it saved us in the long run. THANKS!!

JAY · GOOGLE REVIEW
★★★★★

Would give 10 stars if I could! We had Tony scan a project with an unknown amount of utilities under the slab, he is very professional, did an extremely thorough job, and to top it off he is just a great guy to work with! We can now cut the concrete safely and with confidence. Rainier GPR is the only scanning company I would recommend.

GAVIN R. · GOOGLE REVIEW
★★★★★

Landry was very good at locating. Very helpful explaining the process and results.

MARK B. · GOOGLE REVIEW
What it costs

Straight talk on price.

A private utility locate costs a fraction of a single strike. We quote every job before we roll a truck, and one avoided line (power, gas, or fiber) pays for the locate many times over.

TYPICAL UTILITY LOCATE
$650 $1,750
  Site size & how many utilities are in play
  Access, travel, and after-hours or traffic-control work
  Depth & soil, dry sandy ground vs. wet clay
  Deliverable, marks only vs. a full mapped report

Ranges are typical, not a quote. Tell us the site and we’ll give you a real number, usually the same day.

Locating, in plain terms

How deep we see: and how we find what carries no signal

Underground utility locating combines two methods because no single tool finds everything. Electromagnetic locating induces a signal onto conductive lines (power, metal pipe, and any utility with a tracer wire) and traces it from the surface, giving fast, accurate paths and depth on the majority of a site. Ground penetrating radar covers the rest: PVC water and sewer, fiber, clay pipe, and abandoned lines that carry no current at all. In typical Pacific-Northwest and Central-Florida soils we commonly locate utilities from about three to eight feet deep, deeper in dry sandy ground and shallower in wet clay.

The reason to call before you dig is simple: the record drawings are almost never complete. Private lines get added over decades: a run to a new garage, a gas line to a pool heater, an irrigation loop, a fiber drop, and none of it shows up in the utility company’s map or in an 811 ticket. We build the real picture on the day of the dig, mark it in APWA color code, and hand you documentation you can put in the file. It’s the difference between trenching with a map and trenching on faith.

WHAT WE LOCATE EVERY WEEK
  Private electrical, gas & water past the meter
  Public mains verification before excavation
  Sewer, storm & septic lines
  Fiber, telecom & site communications
  Irrigation, reclaimed water & site lighting
  Abandoned & unmarked lines with no signal
  Pre-trench, pre-bore & pre-drill site mapping

Digging soon? Call before you dig, WA (360) 584-0401 · FL (407) 493-3525, or read the answers below.

Questions before you book

Utility locating, answered straight.

811 is free and required by law, but it only marks public utility-owned lines up to your meter. Everything past the meter is private and invisible to 811: the electrical run to a detached garage, the gas line to a pool heater, irrigation, site lighting, private fiber, and abandoned lines nobody has a record of. That’s exactly what we locate, and it’s where most strikes happen. Always call 811 first; call us for the rest.

Most locates run $650 to $1,750, depending on the size of the site, how many utilities are in play, access, and depth. We quote every job before we roll a truck: tell us the site and the scope and we’ll give you a real number, usually the same day. One avoided strike pays for the locate many times over.

Water, sewer and storm, gas and oil, electric, telecom and fiber, plus private and reclaimed lines: irrigation, site lighting, and abandoned utilities that carry no signal. We combine electromagnetic locating for conductive lines with ground penetrating radar for everything else, so we find both the marked and the forgotten.

In typical soils we commonly locate utilities from about three to eight feet deep. Electromagnetic locating traces conductive lines accurately at depth; GPR depth depends on the soil: dry, sandy ground lets us see deeper, while wet clay limits penetration. We’ll tell you up front what we can and can’t reach on your specific site.

Often, yes. Abandoned lines carry no current, so electromagnetic locators miss them, but ground penetrating radar can pick them up by the disturbance they leave in the soil. Unmarked private lines are exactly what a private locate is for; we don’t rely on the record drawings, we find what’s actually there.

Yes. Pre-excavation site mapping is the core of what we do. Before you trench, bore, auger, or dig footings, we sweep the site, mark every located utility on the ground, and note depths, so your crew works around a full picture instead of guessing.

Next-day scheduling is standard in both the Seattle and Orlando metro areas, and same-day is often possible for time-critical digs. Call the local line and ask. WA (360) 584-0401 · FL (407) 493-3525.

Two things: every located line painted on the ground in APWA color code with depth notes, and a documented record of what we found and where. The marks keep your crew safe on the day; the report holds up for the GC, the engineer, and the permit file.

Yes. Our locating is non-destructive (no digging test holes, no radiation) so we work across active sites, finished landscaping, parking lots, and occupied properties without tearing anything up to find the lines.

Call before you dig

Locate it before you dig it.

Send us the site and we’ll get you a real quote, usually same day, and a crew on site as soon as next-day.

5.0 ★ GOOGLE · WA + FL · NEXT-DAY SCHEDULING