Ground Truth
Practical material for people who plan, locate, design, build or excavate. Articles retain their sources, review dates and category labels.
Field Guides
Plain-language guides for common field, planning and excavation questions.
A concrete scan is most useful before the drill is on site and least useful after the first core is wet. Here is what to have ready, how to read the markup, and what the marks do and don't say.
A trench discovers its mistakes one shovel-width at a time, in the open. A bore makes its mistakes in the dark, at depth, and tells you about them later. The locate has to be built for the difference.
Ask what radar can do here and the honest answer is a question back: mesa or valley? The region's ground splits into two radar environments — and the soil surveys, not the sales brochure, explain which one your site is.
A post-tensioned slab holds a large amount of stored energy in a small number of steel strands. Knowing whether you are standing on one changes how the next cut gets planned — and it is a question worth answering before the saw comes off the truck.
Utility quality levels are a statement about evidence, not a ranking of effort. Each level says what was actually done to produce the information on the drawing — and the single most consequential boundary is the one between designating a utility and verifying it.
Two locate reports can show the same marks and mean very different things. The difference lives in the parts people skip: the quality level, the coverage statement, and the method behind each mark.
Every developed lot accumulates buried lines the way a garage accumulates boxes — steadily, quietly, and with no inventory. The ones that get hit are rarely the ones on a drawing.
A free 811 ticket is the first thing you should do before you dig, and it is not the last. In both Texas and New Mexico the law that makes one-call work also draws a line around what it covers — and on most job sites that line sits at the meter.
Radar does not photograph the ground. It sends a pulse, listens for reflections, and produces a record that has to be interpreted. Understanding what creates a reflection — and what kills one — tells you when GPR is the right call and when it is the wrong one.
The paint and flags on a job site are a standardized language. Eight colors, each with a defined meaning, plus a set of conventions for what the marks are actually telling you about position, depth and age.
Most of what slows a locate down is decided before anyone arrives. Five minutes of preparation on your end usually buys back an hour on site, and it materially changes how much of the site we can actually cover.
When a public utility gets hit, a whole statutory machine engages. When a private line gets hit, there is no machine — just the property owner, the excavator, and whatever they knew and did beforehand. That difference is worth understanding before you dig, not after.
Tracing a line answers “where does it run?” Fault locating answers “where along it did it go wrong?” Those are different questions, they use different techniques, and confusing them is the fastest way to dig a hole in the wrong place.
Training
Method, equipment and field-practice material organized for deeper study.
No locating instrument measures depth. Every one of them calculates it from something else — field geometry, travel time, null spacing — and every calculation rests on assumptions the ground is free to violate.
A locator never lies about what it measures. It measures the field — and the field is not always centered on the line. The two mechanisms that move it are distortion and coupling, and recognizing them is what separates a mark from a guess.
A locator does not detect metal. It detects a magnetic field produced by current travelling along a conductor. Almost everything that goes wrong in the field follows from that one sentence.
A plastic pipe with no tracer wire gives an EM locator nothing to work with. The honest answers are a sonde pushed through the line, radar from the surface, or admitting the line can't be traced today — and knowing which applies is the skill.
A congested corridor is where every lesson in this track lands at once: coupling, distortion, non-conductive lines, unreliable depths. No single method survives it. A sequence does.
A tracer wire is the cheapest component on the job and the one that decides whether a plastic line can ever be traced again. Most tracer wire problems were installed, not developed — and a locator inherits all of them.
Industry Watch
Sourced summaries of news, regulation, equipment, events, recalls, safety alerts and litigation.
The Texas damage prevention calendar's main event, six weeks out. Early registration pricing ends September 2.
The Common Ground Alliance's annual damage data is out, and the direction is the wrong one: a record-high index, telecom and gas absorbing 87 percent of reported damages, and the same root causes as every year before.
Two standards changes that quietly invalidate boilerplate: the SUE standard was replaced and retitled in 2022, and residential post-tensioned slabs picked up a code reference in the 2024 IRC.
If your New Mexico ticketing habits were formed before April 2026, they are out of date. The Public Regulation Commission's damage prevention rules changed, and New Mexico 811 now issues ticket types that did not previously exist.
PHMSA used National Safe Digging Month to restate what it expects: adherence to CGA best practices, accurate and timely locating, and proactive coordination with excavators.
The interesting equipment trend is not better detection. It is that the point being marked now carries a survey-grade coordinate at the moment it is found.
Railroad Commission data reported in June puts Texas past 4,800 excavation-related pipeline strikes for the year — and roughly a third of the excavators involved had not contacted 811 before digging.
Three bills touching Texas's dig law died in committee in 2025 without a hearing between them advancing. The story didn't end there: the House stood up an interim Subcommittee on Underground Facility Safety, and it has already taken testimony.
A Missouri consent judgment reported in May 2026 is worth reading by anyone whose job involves telling somebody else that a site has been marked.
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