Section 62.602 - Effective date(a) The effective date of EPA approval of the plan is November 19, 1999.(b) The effective date of the plan submitted on July 24, 2018, by the Arizona Department of Environmental Quality for municipal solid waste landfills is August 27, 2020.85 FR 45329, July 28, 2020 85 FR 9390, 2/19/2020; 85 FR 45329, 8/27/2020