Text: Section 607 permits agencies, in complying with sections 603 and 604, to provide either a quantifiable or numerical description of the effects of a rule or more general descriptive statements if quantification is not practicable or reliable.
Entailment: Agencies can provide simple descriptive statements if they cannot reliably or practically quantify the effects of a rule, according to Section 607.
Contradiction: Agencies can submit a general descriptive statement on a rule because sections 607 and 603 disagree with one another.