The purpose was to provide habitat improvements and stabilize storm drain outfalls in support of DOEE’s MS4 permit goals. The design includes Step Pool Stormwater Conveyance (SPSC) used in combination with the design of a stream-wetland complex supporting the establishment of creation of approximately 4,200 square feet of floodplain wetlands within a forested corridor.
Straughan made significant improvements to the proposed approach working closely with the construction contractor upon contract award. Our team prepared a thorough Natural Resources Inventory (NRI), which included survey of all trees within the project area to enable the team to accurately select access and grading areas that would minimize impacts to forest canopy. The changes to the proposed approach (including reducing upstream excavation and relocating the stream wetland complex downstream) resulted in a major reduction in impacts to large trees in support of DOEE goals.
Straughan also proactively coordinated with DOEE, the US Army Corps of Engineers (USACE), the Department of Parks and Recreation (DPR), DC Water, and DDOT to accurately determine project constraints, document preconstruction site conditions, including aging infrastructure, and plan effective communication with stakeholders. The project was constructed in 2020 with Straughan providing construction inspection and engineering support.