If the Agency determines that additional information or a site visit is necessary for the Agency to evaluate an NPDES Permit application, it must notify the applicant and arrange to secure the additional information or make the site visit. If the Agency does not receive adequate information within the period specified by the Agency, the permit must either be issued or denied based on the information currently before the Agency, and the applicant so notified.
Ill. Admin. Code tit. 35, § 309.106