In the case of underground storage tanks regulated under this subchapter that have not undergone an inspection since December 22, 1998, not later than 2 years after August 8, 2005, the Administrator or a State that receives funding under this subchapter, as appropriate, shall conduct on-site inspections of all such tanks to determine compliance with this subchapter and the regulations under this subchapter (40 CFR 280) or a requirement or standard of a State program developed under section 6991c of this title.
After completion of all inspections required under paragraph (1), the Administrator or a State that receives funding under this subchapter, as appropriate, shall conduct on-site inspections of each underground storage tank regulated under this subchapter at least once every 3 years to determine compliance with this subchapter and the regulations under this subchapter (40 CFR 280) or a requirement or standard of a State program developed under section 6991c of this title. The Administrator may extend for up to one additional year the first 3-year inspection interval under this paragraph if the State demonstrates that it has insufficient resources to complete all such inspections within the first 3-year period.
Nothing in this section shall be construed to diminish the Administrator’s or a State’s authorities under subsection (a).