The battery limit of FGD Ammonia plant is the north of pelletizing plant stack. The FGD process unit to remove the SOx and also crystallization and packaging equipment should be located in this area. For more information please refer to the below CAD and PDF files: Ammonia FGD and Ammonium sulfate FGD Battery limit (CAD file): FGD FOOT PRINT AREA (Attachment 10) Ammonia FGD and Ammonium sulfate FGD Battery limit (PDF file): FGD FOOT PRINT AREA (Attachment 11) Note: the inlet battery limit of FGD plant is the nearest flanges to pelleting ESP’s fans of the outlet ducts.