The violations stem from six rain events of one quarter inch or greater at the site, which resulted in a discharge of pollutants from the site into waters of the United States in violation of Section 301 of the Clean Water Act. Respondent did not develop and implement a site-specific Storm Water Pollution Prevention Plan ( SWPPP ) and apply for NPDES permit coverage, either by filing an individual permit application or an NOI to be covered by an applicable NPDES general permit, for discharges from the facility.