Proposed Amended Rule 1193 clarified the applicability of requirements for public fleet operators, except federal fleets, to purchase alternative-fuel rolloff, transfer, and solid waste collection vehicles in consideration of the agreement between the Engine Manufacturers Association, Western States Petroleum Association, and the Air Quality Management District. The REMI PI+ model assessed the total socioeconomic impacts of a policy change by linking the economic activities in the counties of Los Angeles, Orange, Riverside, and San Bernardino and displayed the impacts by sector for two potential scenarios tied to this proposed amended rule. Overall, the projected increases in the cost of production and delivered prices indicated that the impact on the regional economy’s competitiveness relative to their national counterparts would be small.