Proposed Rule (PR) 403.2 has been developed to supplement the existing regulatory requirements in Rule 403 – Fugitive Dust, to reduce air quality impacts to nearby receptors resulting from fugitive dust generated by construction and demolition activities of a large roadway, including any adjacent bridge, overpass, or onramp. A large roadway is defined as any portion of a roadway that is designated as functional classification “Interstate” (FC1) or “Other Freeway or Expressway” (FC2) by the Federal Highway Administration, and most large roadway projects would be under the jurisdiction of California Department of Transportation or the authority of the local county in which the project is located. Specifically, PR 403.2 would not allow any person to conduct aggregate crushing and grinding operations or maintain a material pile within 100 feet of an area of public exposure or 250 feet of a sensitive receptor unless: 1) a water misting dust control system is used during aggregate crushing and grinding operations to prevent visible dust emissions from exceeding 100 feet in length in any direction, and the materials being recycled are generated from the large roadway project; and 2) for material piles, a material pile cover or equivalent method to control fugitive dust approved by Executive Officer is used. In addition, PR 403.2 would: 1) require the following for activities conducted within 500 feet of an area of public exposure or within 1,000 feet of a sensitive receptor: a) implementation of enhanced fugitive dust control measures as currently required for Rule 403 Large Projects, b) installation of signage around the project perimeter, and c) the appointment of a dust control supervisor responsible for ensuring rule compliance; 2) require advance notification prior to the commencement of work for activities conducted within 1,000 feet of an area of public exposure or sensitive receptor; and 3) exempt large roadway project activities conducted during emergency, life-threatening situations, or by essential service utilities to provide electricity, natural gas, telephone, water, or sewer during service outages and emergency disruptions. The requirements of PR 403.2 would become effective six months after the date of adoption.