The existing Suffolk County Sewer District #9 – College Park (SCDPW owned and operated) Wastewater Treatment Plant is a 40,000 gpd single train extended aeration plant that is being operated similar to a Modified Ludzack Ettinger (MLE) process. Hayduk Engineering was the consulting engineer for the wastewater treatment plant improvements to the facility including a building expansion to house new blowers and new drum filters, electrical upgrades, new chemical storage facilities, and a newly emergency power generator. The project also included design of new splitter boxes, conversion of the existing abandoned chlorine contact chamber to a flow meter pit and effluent wet well, and replacement of all aeration equipment with new higher efficiency diffused aeration equipment and blowers. For budgetary purposes, SCDPW elected to install portions of the project in a phased approach. To date, the building extension, electrical upgrades, emergency generator, and new blowers have been installed. Hayduk Engineering provided preliminary design, final design, bidding phase and shop drawing review services for this project.