This category represents equipment for conveying flue gas from the NGCC to the absorbers. This includes ductwork, blowers, modifications to the existing HRSG stacks, and conditioning of the flue gas stream. The higher cost in the Panda FEED can be attributed to differences in site layouts as well as the processes. In the Panda FEED, the capture unit is located further away from the NGCC unit. The flue gas from both HRSGs is combined into a common duct to the two absorbers, totaling 1290 feet (393 m). In the Mustang FEED, the capture unit is located adjacent to the HRSG flue gas stacks, allowing for relatively straight and short ductwork runs. The ductwork length from each HRSG stack to each absorber is approximately 600 feet (183 m). Section 6 includes further analysis of the cost of ductwork.