Ariz. Rev. Stat. § 49-588
A. In each year of the regional program each major employer shall:
2. Participate in a survey and reporting effort as directed by the task force and as scheduled by the staff. The results of this survey shall form a baseline against which attainment of the targets in subsection D of this section shall be measured as follows:
3. Prepare and submit a travel reduction plan for submittal to the staff and presentation to the task force. The staff shall assist in preparing the plan. Major employers shall submit plans within nine weeks after they receive survey data results. The plan shall contain the following elements:
(c) A description of additional travel reduction measures to be undertaken by the major employer in the coming year. The following measures may be included:
C. Except as provided in subsection F of this section, an approvable travel reduction plan shall meet all of the following criteria:
4. For employers that, in any year, fall below the regional targets for travel reduction, the plan shall include commitments to implement:
E. Employers shall implement all travel reduction measures they consider necessary to attain the following reduction in the proportion of employees commuting by single occupancy vehicles or commuter trip vehicle miles travel reductions per regulated work site:
F. Notwithstanding any other requirements, a major employer may be in compliance with the requirements of subsections A, C and E of this section by submitting a plan that demonstrates achievement of emissions reductions equivalent to those that would have been obtained through compliance with the requirements of subsection E of this section. Emissions reductions achieved for the purpose of compliance with this subsection shall be in addition to any other emissions reductions that are otherwise required by law, rule, ordinance or permit. The plan may contain any of the following measures to achieve emissions reductions:
1. Voluntary polluting vehicle trade-outs only if both of the following conditions are met: