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Durango (970) 340-2357Farmington, NM →

Excavation and underground utility work

Sewer and water service lines, buried gas and electrical, utility trenching, culverts, storm drains and French drains — dug, installed, inspected and put back.

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Why one company

The trench and what goes in it are the same job

Most excavation outfits dig and leave. The pipe, the conduit, the connection, the pressure test and the inspection are then somebody else’s work, on somebody else’s schedule, under a second permit — and when a line fails two years later the two companies each point at the other.

M&R holds the plumbing and electrical licenses and owns the machines. One crew locates it, digs it, installs it, gets it inspected, backfills it properly and puts the surface back — and one company is answerable for all of it.

Our guarantees
An M&R crew working in an open trench on a sewer line excavation

What we dig

Eight kinds of underground work

Each of these is a different problem with a different answer. The one thing they share is that getting it wrong is expensive to reach again.

Sewer Line Excavation

Replacing a line that is past repair.

A camera goes down the line first, because the picture decides the job. A single offset joint or one crushed section is a spot repair and a short trench. A line that is bellied, collapsed, or has root intrusion through every joint gets replaced end to end. We locate the run and its depth before anything is dug, so the trench goes where the pipe is rather than where the plan says it should be.

Sewer line repair →

Water Service Line Excavation

From the meter to the house.

The service line is the one nobody thinks about until the pressure drops or a patch of lawn stays green through a dry spell. Galvanized lines corrode shut from the inside and old polybutylene splits at the fittings. The replacement goes in below the local frost depth, bedded in sand rather than laid on rock, with a new shutoff where it enters the building so the next repair does not need the street.

Repiping →

Gas Line Excavation & Installation

Buried runs to a shop, generator, grill or pool heater.

A buried gas run is sized for the appliance at the end of it and every appliance already on the system, which is the step most often skipped — a line that is one size light works perfectly until the second appliance fires. Tracer wire goes in with the pipe so it can be found again, the line is pressure tested, and it is inspected before the trench closes.

Gas lines →

Underground Electrical Trenching

Power out to a shop, barn, well, pump or gate.

Burial depth depends on what is in the trench — direct-burial cable, PVC conduit and a feeder behind a breaker are each held to a different minimum, and the inspector measures it. We pull the conduit, set the sweeps so the wire can actually be pulled later, keep the required separation from the gas and water in the same trench, and land it on a panel sized for what the building will eventually hold rather than what it holds today.

Wiring & repairs →

Utility Trenching

One trench, several utilities, done to spec.

Running water, gas, electric and low-voltage in a shared trench is cheaper than four trenches and is allowed, within rules about vertical separation, bedding and marking. Each utility gets its own bed and its own warning tape at the right height, and the backfill goes in lifts and is compacted rather than pushed back in and left to settle over the winter.

Culvert Installation & Repair

Driveway crossings and washouts.

A culvert is sized for the water the ditch actually carries in a hard rain, not for the pipe that happened to be there. One that is undersized, crushed at the inlet, or silted full sends the next storm across the driveway instead of under it. We set the invert so it drains, armor the inlet and outlet so the ends do not undercut, and rebuild the shoulder over the top.

Storm Drain Installation

Moving surface water off the property.

Surface water is collected at catch basins and carried to somewhere it can go — daylight on a slope, a dry well, or a legal tie-in. The whole job is grade: a line with a flat spot in it holds water, freezes, and fails at the flat spot. We shoot the grade rather than eyeball it, and size the basins and the pipe to the roof and paving area feeding them.

French Drains

Subsurface water, away from the foundation.

A perforated pipe in washed rock, wrapped in filter fabric, intercepting groundwater before it reaches a wall or a crawlspace. Fabric and clean rock are what decide whether it still works in ten years — a drain backfilled with native soil silts shut and becomes a buried pipe full of dirt. Where the water has nowhere to fall to, the trench feeds a sump instead.

French drains →

How it goes

What actually happens between the estimate and the grass growing back

Six steps, in this order, every time. The two that get skipped by the cheapest quote are the locate and the compaction, and both of them are found out later.

  1. 01Locate firstUtility locates are requested and marked before a blade touches the ground, and private lines the locator will not mark — a gas run to a shop, a sprinkler main, a septic line, a well feed — get located separately, because those are the ones that get hit.
  2. 02Permit and plan the trenchMost of this work is permitted and inspected. Pulling the permit up front is what keeps the trench open for one inspection rather than reopened for a second.
  3. 03Dig to the line, not through itThe last stretch to a known utility is hand-dug or vacuum-excavated. Walls are sloped or shored to depth, and nobody enters a trench that has not been made safe.
  4. 04Install, then prove itPressure test on gas and water, camera on sewer, continuity and insulation resistance on electrical. All of it happens while the trench is still open and the fix is still cheap.
  5. 05Inspection before backfillThe inspector sees the work in the ground. A trench closed before inspection is a trench that gets opened again at somebody’s expense.
  6. 06Backfill in lifts, then put the surface backBedding sand around the pipe, native fill in compacted lifts above it, and the driveway, concrete or lawn restored. A trench that is merely filled will show as a sunken stripe by spring.

La Plata County

What you get that a backhoe on its own does not

  • One company digs the trench and does the licensed work that goes in it — no coordinating a dirt contractor with a plumber and an electrician, and no second permit because the first trade left.
  • Licensed and bonded in New Mexico and Colorado, with plumbing, electrical and HVAC crews on the same payroll as the machines.
  • Utility locates, permits and inspections are handled as part of the job rather than left to the homeowner.
  • Camera and line-locating equipment, so the trench is dug where the pipe is.
  • Backfill is compacted in lifts and the surface is restored — driveway, concrete or lawn.
  • Serving the Four Corners since 1954, which means most of these lines were put in by somebody we know.

After the flooding

Washed-out culverts and drainage that gave up

A culvert that was undersized or silted before the storm is the reason the water went over the driveway instead of under it, and saturated ground has found every weak spot in the drainage around a lot of houses this month. That work is worth doing before the next one rather than after it.

Flood damage help →

Before you book a dig

Excavation, answered

Do I need a permit to dig on my own property?

For most of this work, yes — sewer, water service, gas and electrical are permitted and inspected in both states, and the inspection happens while the trench is open. Locating is not optional at all: a free utility locate has to be requested before any digging, on any property, by anyone, and hitting an unmarked line you did not have located is the homeowner’s liability.

How do I know whether my sewer needs a spot repair or a full replacement?

A camera inspection answers it and nothing else does. One offset joint, one crushed section or one root ball is a spot repair and a short trench. A line that is bellied along its length, or has roots coming in at every joint, is replaced — patching it repeatedly costs more than the replacement within a couple of years.

Can you dig in winter?

Yes. Frozen ground is slower and the spoil pile behaves differently, but emergencies do not wait for spring, and a failed water service or a sewer backup in January is an emergency. Surface restoration is sometimes the part that waits for the ground to thaw, and we will say so up front rather than after.

Will my yard look like a construction site when you are finished?

The trench line will be visible for a season — that is honest, and anybody who tells you otherwise is guessing. What we control is the part that matters: backfill compacted in lifts so it does not sink, topsoil back on top, and concrete, asphalt or pavers put back rather than patched with gravel.

My culvert washed out in the flooding. Is that an excavation job?

Usually yes, and it is worth doing before the next storm rather than after. A culvert that was undersized or silted before the flood is the reason the water went over the driveway instead of under it, and replacing it is a different job from digging out the one that failed.

Can you run power and water out to a shop in the same trench?

Yes — a shared trench is allowed and it is cheaper than digging twice, within rules about how far apart the utilities sit vertically, how each one is bedded, and where the warning tape goes. We do both trades, so one crew sets the whole trench to spec and one inspection covers it.

Tell us what is under the yard

Sewer, water, gas, power or drainage — call (970) 340-2357 and we will come and look at it before anybody quotes a number.

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