ADEQ opens comment on proposed Yuma dust-control rules

Yuma residents and businesses have until Nov. 9 to weigh in on a proposed set of state rules intended to reduce windblown dust in the region’s federal PM10 nonattainment area. The Arizona Department of Environmental Quality’s proposal reaches beyond construction sites: it would amend agricultural best-management rules and add controls for construction, vacant lots and roads, with different requirements and exemptions for each source.

The public comment period opened Oct. 9. ADEQ scheduled a hearing for 11 a.m. Monday, Nov. 9, at the Yuma County Main Library, 2951 S. 21st Drive. Written comments must reach the department by Nov. 9. The proposal is not yet in force. It is a proposed rulemaking, published in the Arizona Administrative Register, and remains subject to public comment and later review.

The formal proposal would amend two existing sections, R18-2-613 and R18-2-613.01, and add three Yuma-specific sections in Article 13, plus a new appendix describing compliance tests. ADEQ says the agricultural amendments are meant to make existing rules clearer and easier to enforce. The new sections address fugitive dust from construction, vacant lots and roads. The agency says the package is intended to support a state implementation plan required under the federal Clean Air Act and reduce the risk that the area is reclassified from moderate to serious nonattainment, which could trigger federal sanctions and a federal implementation plan.

For construction operators, the proposal is detailed. Depending on the activity and site, requirements include stabilizing disturbed soil with water, chemical suppressant, gravel or pavement; controlling dust from demolition debris; preventing and cleaning trackout onto public roads; keeping dust-control plans and inspection records; and, for qualifying sites, obtaining authorization under a construction general permit. The proposal would require construction operations to stop during high winds when visible emissions exceed the proposed limits unless added controls prevent the excess. Sites with at least five acres of disturbed surface would need a trained dust-control coordinator on site during covered dust-generating work.

Farmers and ranchers would be affected under a separate proposed agricultural section. ADEQ’s rulemaking summary says the rules include applicability limits and exemptions, so the proposal would not automatically subject every farm, road, vacant parcel or construction site to the same requirements. The exact applicability depends on the rule text and defined terms, not simply whether an operation is agricultural or located in the nonattainment area. Businesses should check the proposed rule and its maps rather than assume a blanket exemption or blanket obligation.

PM10 means airborne particles 10 micrometers or smaller. ADEQ’s proposal cites the federal 24-hour standard of 150 micrograms per cubic meter and explains that exposure can worsen asthma, irritate airways and aggravate heart or lung disease. That health context does not mean the rule itself will guarantee a particular change in local concentrations. The proposal is aimed at controlling specified sources; the effect will depend on final language, compliance and measured conditions.

Residents can submit comments through the email address listed in ADEQ’s notice, by mail to the Air Quality Division, Attention Steven Burr, 1110 W. Washington St., Phoenix, AZ 85007, or at the hearing. The agency’s public notice and full proposed rule are linked on its rulemaking page. Comments submitted by the deadline become part of the record the department must consider before deciding what to do next.

Sources

• Arizona Administrative Register, Oct. 9 proposed rule, file R26-179
• ADEQ public notice and comment instructions
• ADEQ hearing location and time
• ADEQ Yuma PM10 project page and earlier stakeholder drafts