Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 2 - DEPARTMENT OF ENVIRONMENTAL - QUALITY AIR POLLUTION CONTROL › Article 6 - EMISSIONS FROM EXISTING AND NEW POINT SOURCES › Section R18-2-612 - Definitions for R18-2-612.01

Current through Register Vol. 30, No. 28, July 12, 2024
The definitions in
				  R18-2-101
				  and the following definitions apply to
				  R18-2-612.01:
1. "Access restriction" means reducing PM
				emission by reducing the number of trips driven on unpaved operation and
				maintenance and unpaved utility roads by restricting or eliminating public
				access by the used of signs or physical obstruction at locations that
				effectively control access to roads.
2. "Aggregate cover" means reducing PM
				emissions, wind erosion and stabilizing soil by applying and maintaining
				gravel, concrete, recycled road base, caliche, or other similar material to
				unpaved roads. The aggregate should be clean, hard and durable, and should be
				applied a depth sufficient to create soil stabilization in accordance with
				material specifications. A minimum depth of three inches is the standard in the
				absence of such specifications.
3.
				"Apply and maintain water" means reducing PM emissions and wind erosion by
				applying water to bare soil surfaces until the surfaces are visibly
				moist.
4. "Best management
				practice" means a technique verified by scientific research, that on a
				case-by-case basis is practical, economically feasible, and effective in
				reducing PM emissions from a regulated agricultural activity.
5. "Biological control of aquatic weeds"
				means reducing at least one trip, or to one trip if only one trip is needed,
				per treatment, made by vehicles for the purposes of removing aquatic weeds from
				canals by using fish, and other biologic means, within the canal through the
				use of to control the growth of aquatic weeds that reduce operating capacities
				and create debris that causes other operational issues.
6. "Canals" means facilities constructed for
				the sole purpose of the control, conveyance, and delivery of water. These
				facilities may be either open earthen channels, lined or unlined, or buried
				pipelines, which are used to convey water uphill and under obstructions, such
				as roadways and wash and river channels. These facilities include, but are not
				limited to, gate, inlet, outlet, safety, and measuring structures required to
				control water along the canals and deliver water to irrigation district
				customers, as well as compacted earthen banks constructed to protect these
				facilities from storm runoff events.
7. "Committee" means the Governor's
				Agricultural Best Management Practices Committee.
8. "Debris" means trash, rubble, and other
				non-soil materials.
9. "Dredge
				canals" means reducing PM emissions by mechanically removing muck, debris, and
				other foreign objects from canals while material is still wet or
				damp.
10. "Dust Control Forecast"
				means a forecast, which shall identify a low, moderate or high risk of dust
				generation for the next five consecutive days and shall be issued by noon on
				each day the forecast is generated. When developing these forecasts, the
				department shall consider all of the following:
a. Projected meteorological conditions,
				including:
i. Wind speed and
				direction,
ii.
				Stagnation,
iii. Recent
				precipitation, and
iv. Potential
				for precipitation;