Dust control on a Mesa job site: where wind fencing fits and where it does not

Dust is regulated in Maricopa County in a way it is not in most of the country, because the region sits in a federal nonattainment area for particulate matter. That is why “wind fence” is a phrase contractors here use casually and contractors elsewhere have never heard.

This page is not a compliance document. The requirements belong to the Maricopa County Air Quality Department and they are the authority. What follows is the fencing side.

Where fencing fits

Screened and wind fencing is one of the recognised ways to keep windblown dust from leaving a disturbed surface. A solid screened barrier on the upwind side reduces wind velocity at ground level, which reduces how much material gets picked up.

Fencing, though, is not a dust control plan. The measures that usually do more work:

• Water, applied to the disturbed surface on the schedule the plan requires. This is the workhorse.
• Stabilising ground that is disturbed but sitting idle.
• Track-out control at exits: tyres dragging dirt onto the street start more complaints than anything else.
• Keeping the disturbed area small and phasing the work.
• Shutting down in high wind when the plan calls for it.

Screen backs up every item on that list and stands in for none of them. A contractor who sells you wind fence as your dust control plan has done you no favours.

What it costs

Published on the pricing page, and the fence cost calculator will assemble it for your footage.

The trade-off nobody mentions when selling screen

A screened fence is a sail. Bare chain link lets air through; screen makes the whole fence a solid surface and the wind load rises dramatically. Monsoon microbursts, roughly mid-June through September, produce brief violent gusts that lay a standard-ballasted screened line flat.

A screened line therefore needs:

• More ballast, at closer spacing
• Panels tied together so the line shares load
• Bracing on long straight runs
• In-ground posts wherever the ground allows and the job justifies it

And on some sites it needs the screen removed for July and August. That is a smaller invoice for us, and we will still say so for a line that cannot be set up properly. See blown over.

There is a genuine tension here: the season with the worst dust is also the season with the worst wind. Skipping the screen is not the fix; building the line for the season is.

Practical setup on a Mesa site

1. Start with the upwind side when only part of the line gets screen. Prevailing wind and the direction complaints come from are both good guides.
2. Watch the street edge. Complaints mostly come from dirt reaching the road, and tyres put it there as often as wind does.
3. Fence before grading starts, rather than after the first complaint.
4. Check the line every week in season. Bags migrate, ties work loose, and screen rips at the grommets, after which it peels.
5. Work with the water truck’s schedule. Screen cuts how much dust lifts; water keeps it from lifting at all.

Who this bites hardest in Mesa

The southeast growth corridor: large graded pads, open ground, few windbreaks, and neighbours close enough to complain. Those sites are where screened lines are most often required and most often under-built, because a 1,000-foot screened run on a flat pad in July is exactly the configuration that fails.

For those, in-ground chain link with screen is the honest specification, and at six months the per-month economics are close to panels anyway.

What to expect on the call

Footage, which sides need screening, duration, whether the job runs through monsoon, and what is downwind. Ask us to quote the line that stands up rather than the cheapest configuration, with the ballast, bracing and screen spec in writing. Fencing supports your dust obligations; it does not discharge them. We cover Mesa, East Mesa, Gilbert, Tempe, and Apache Junction.