This New York State Department of Transportation (NYSDOT) project included storm drainage investigations and design improvements at six (6) separate locations in eastern Suffolk County on Long Island. Hayduk Engineering worked as a subconsultant to Hardesty and Hanover and completed location 6, which covered a 5 mile long section of Montauk Highway from Sayres Path to Skimhampton Road in East Hampton, NY. The purpose of this project is to improve drainage systems and the quality of road runoff to adjacent surface waters. Hayduk Engineering was responsible for the development of design alternatives, which included both construction and non-construction remediation improvements. The project included dry weather and wet weather inspection and cataloguing of over one-hundred seventy (170) storm drainage structures. Hayduk Engineering prepared engineering design plans for improvements and repairs to the drainage system along with a condition assessment report.