In response to the release or threatened release of hazardous substances at or from the Site, EPA undertook response actions at the Site pursuant to Section 104 of CERCLA. Such actions included but are not limited to the encapsulation and removal of asbestos material, the sampling and removal of PCB contaminated material, consolidation and removal of drums of lead contaminated sludge and piping, the removal and disposal of PCB light ballasts, and the removal and incineration of paint wastes. In performing such actions, EPA has incurred response costs at or in connection with the Site.