Scout Hall Youth Center, East Windsor, CT. Download Announcement & Registration Form. This class meets sewage sludge incinerator (SSI) operator training needs defined under the new U. S. EPA air regulations related to SSI air emissions. SSIs are required to have trained operators by March 21, 2016, the date on which the new SSI regulations take effect. SSIs must meet other requirements as well; see the EPA SSI regulation website to learn more. Contact NEBRA for further details. Co-produced by NEIWPCC, with support from NESCAUM.