Michael Baker International, Inc. was tasked by the NJDOT Bureau of Environmental Program Resources to inventory stormwater basins and outfalls for assessment purposes. The primary goal of the project was to obtain and compile assessments to identify maintenance requirements and remedial actions to address issues including erosion and sedimentation, which may affect downstream surface water quality. The project involved collecting stormwater outfalls and basins along 650 miles of roadway across central New Jersey, which was previously a paper based process. Two-person field crews were responsible for collecting characteristic information about each basin and outfall as well as additional data points such as inlets, manholes, control structures, ditches, swales, and basin boundaries. Multiple images were captured for each location to aid in identifying maintenance requirements and remedial actions. Field data collection was performed using Collector for ArcGIS and Survey123 using a high accuracy GPS receiver connected to iPad and Android tablets via Bluetooth. At the completion of each route inventory a final package was created based on field data analysis which included reports, recommendations, maintenance cost estimates, and photos in addition to the field collected data in multiple formats.
