text: EPA has considered numerous regulatory alternatives to the final provisions of the rule , which are discussed in both the preamble to the final rule and the Regulatory Impact Analysis , but has determined that the requirements expressed in the final rule constitute the most cost-effective and least burdensome alternative that would meet the mandate of section 206 ( h ) of the Clean Air Act .
  
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  EPA has not considered any numerous regulatory alternatives to the final provisions of the rule .