Covanta Onondaga - Intern Dana Esposito is a senior at Rensselaer Polytechnic Institute, majoring in geosciences. Covanta Onondaga is a waste to energy facility located on the outskirts of Syracuse in central NY. The facility submitted a proposal to evaluate a manufacturer's claims on emission reductions of NOx and CO as well as improved fuel efficiency in a diesel fuel catalyst. Mr. Esposito selected two engines to study, collected a set of baseline emission measurements from the two engines using a portable emissions analyzer, installed the catalyst unit in two engines, and collected post installation measurements. Fuel consumption records were not kept, but efficiencies were inferred based upon CO readings. Results were mixed, and the student concluded that more study with additional testing be performed to more accurately assess costs and benefits. In addition, he recommended that fuel use be monitored for one year. His results indicated that on one engine, emissions decreased post installation, and fuel efficiency improved. Annually, the catalyst would reduce NOx by 5%, or 276 pounds, and CO by 2.8%, or 12 pounds. On the other engine however, emissions increased after an initial decrease, and there was no improvement in fuel efficiency.