§ 52.1375 Control strategy: Lead.  


Latest version.
  • Determination—EPA has determined that the East Helena Lead nonattainment area has attained the lead national ambient air quality standards through calendar year 1999. This determination is based on air quality data currently in the AIRS database (as of the date of our determination, June 18, 2001).

    [66 FR 55098, Nov. 1, 2001]