How Do the Phase II Rules Affect Industry?
Phase I of the storm water program required 11 industrial categories to obtain an NPDES permit for their storm water 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 storm water, 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 storm water permit. For a list of the Phase I “light industry” facilities, contact the Off
