Within nine months after promulgation of an naaqs, each state was required to submit to EPA a plan designed to implement and maintain that standard within its boundaries.

  • 在《全国环境空气质量标准》颁布后的9个月时间内,要求各州报送环境保护局一份计划,说明在本州实施与维持该标准的措施。

  • provided by jukuu 2026-07-14 07:08:54

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