Environmental resource permitting rules have certain exemptions, limitations or requirements that are based on the amount of impervious surface either proposed or existing for a project. Long-standing District practice has been to include semi-impervious materials with impervious materials when addressing such provisions. Recently, the District adopted a specific definition of “semi-impervious,” which made the continued inclusion of semi-impervious material in requirements for impervious material unclear in some rules. The proposed amendments are part of a rulemaking package that includes Chapters 40D-4 and 40D-40, F.A.C., and is intended to eliminate any uncertainty concerning how semi-impervious material is to be addressed. The Joint Application for Environmental Resource Permit/Authorization to Use State Owned Submerged Lands/Federal Dredge and Fill Permit, Form No. 547.27/ERP (6/10) is revised to clarify that information on semi-impervious material is to be included with information submittals relating to impervious material.