Specifications include, but are not limited to: Diesel vehicles and equipment (including highway vehicles, non-road vehicles/equipment, and locomotives) can be replaced under this program with newer, cleaner vehicles and equipment that operate on alternative fuels (such as CNG or propane), zero tailpipe emission sources (battery electric, grid electric, or fuel cell), or diesel fuel and use engines certified by EPA (or CARB, if applicable) to meet more stringent emission standards. The proposed unit must resemble the existing unit in form and function. Projects seeking to replace an existing diesel unit with a newer diesel unit are only eligible if the existing unit is engine model year (EMY) 2009 or older. Replacement of an existing diesel unit with a unit with a Low NOx engine or zero-tailpipe emission power source is not subject to this EMY restriction. For electric vehicle projects, eligible costs may include the purchase and installation of one charging unit per vehicle, including the unit, charging cable, and the mount and/or pedestal. Zero tailpipe emissions vehicles and equipment do not require EPA or CARB certification. For alternative fuel projects and electric vehicle projects, eligible costs may include necessary training for mechanics and/or operators related to the maintenance and operation of new technologies.