Upgrade a 15 MGD Facility for removal of Nitrogen. Included construction of a new Flow Splitter Box. Demolition of equipment, piping & miscellaneous items in current primary clarifiers. Installation of mixers in anoxic basins, NRCY pumps in aeration basins. Demolition of existing air piping & diffusers in aeration basins, installation of new blowers in existing blower bldg. Installation of new stainless steel air piping & new diffusers in aeration basins. New 42-inch influent pipe to headworks. Relocation of existing odor control unit. New yard piping; Demolition of existing yard piping as needed. Electrical, instrumentation & controls, & civil works.