The CHPE is an innovative renewable power transmission project for the delivery of low cost renewable energy to New York State, which includes the installation of approximately 339 miles of underground and underwater transmission line from the United States-Canada border to Astoria, Queens, NY. At the Astoria Converter Station complex, KC is preparing the geotechnical design, including review of soil boring logs, classification of soils based on the United Soil Classification System, development of design soil parameters and wall sizing, sliding and overturning stability analyses, and bearing capacity analysis; preparing structural design (reinforcement design) of retaining walls; drafting plans, profiles, and sections for retaining walls; and performing buried pipe analysis to determine the adequacy of soil cover. KC is also designing and analyzing a permanent sheet pile wall to protect a sloping access roadway. The sheet pile wall is being designed for sudden draw down conditions to account for groundwater fluctuations due to tidal waves.
