; and (B) hold at least 4 public hearings on such proposed protocol at times and in locations intended to maximize public input. (b) Final protocol Not later than 1 year after the date of enactment of this section, the Administrator shall— (1) finalize the proposed protocol published under subsection (a) by revising such proposed protocol as the Administrator determines necessary based on public comments received in writing and during the public hearings held pursuant to such subsection; and (2) publish in the Federal Register the final protocol for assessing and addressing the cumulative public health risks associated with multiple environmental stressors. (c) Implementation Not later than 3 years after the date of enactment of this section, the Administrator shall implement the final protocol described in subsection (b). 3. Environmental justice for communities overburdened by environmental violations (a) Identification of communities Not later than 180 days after the date of enactment of this section, the Administrator shall, in consultation with co-regulators in State and local agencies, identify at least 100 communities— (1) that are environmental justice communities; and (2) in which there have been, over the previous 5 years, a number of violations of environmental law that the Administrator determines to be greater than the national average of such violations. (b) Analysis and recommendations Not later than 1 year after the date of enactment of this section, with respect to each community identified under subsection (a), the Administrator shall— (1) undertake an analysis of the conditions that have led to the number of violations described in subsection (a)(2), including through engagement with the residents of each such community; (2) identify the root cause of the number of violations described in subsection (a)(2)