The Department of Water Management is beginning a project to develop a hydraulic model of the sewer collection system which drains to the North Durham Water Reclamation Facility (NDWRF). As part of the model development process, survey crews will access large-diameter sanitary sewer outfall easements in order to perform survey and assessment activities. This survey and assessment activity is expected to begin in May 2019 and last approximately seven months. Crews also installed hydraulic flow meters in 27 locations throughout the sewer collection system which drains to the NDWRF. These meters will be installed from March 2019 through June 2019. Crews will return to these sites frequently to perform required maintenance and calibration activities.