Phase I of the stormwater program required 11 industrial categories to obtain an NPDES permit for their stormwater discharges. Phase II does not add any new industrial categories to the program.
Phase I also included a "no exposure" exemption limited to certain "light industry" facilities. Phase II expands the "no exposure" exclusion to include all industrial facilities covered under Phase I except construction activities. If industrial materials or activities are not exposed to stormwater, an exemption can be requested under this exclusion. Illinois E PA notifies exemption applicants if the exemption is approved or if the request is denied or additional information is required. The condition of no exposure must be maintained by keeping all industrial materials or activities protected at all times. If "no exposure" conditions are not maintained, the operator must immediately apply for an NPDES stormwater permit. For a list of the Phase I "light industry" facilities, contact the Office of Small Business.
Under the Phase II "no exposure" exclusion, a written certification must be submitted every five years to verify that a condition of no exposure exists. All industrial facilities covered under Phase I of the stormwater program must either apply for an NPDES permit or complete a "no exposure" certification form every five years in order to comply with stormwater requirements. The Illinois EPA fact sheet entitled "Stormwater - Keep it Clean!" presents additional information.