What you Need to Know: Image 1: California State Water Boards, Los Angeles Region 4, CII Permit Big changes are coming for southern California businesses with more than 5 acres of impervious area. A new draft NPDES storm water permit (CII Permit) has been released for comment that applies to Commercial, Industrial, and Institutional (CII) sites in the following two Southern CA watersheds: Dominguez Channel/Greater Los Angeles and Long Beach Harbor Watershed Los Cerritos Chan