Metro Transit redeveloped their Heywood Campus in Minneapolis, including the Police Department Headquarters building expansion and constructing an additional bus garage. To provide additional parking, two lots adjacent to the Transit Control Center (TCC) were purchased to construct a parking lot.
Metro Transit tasked Rani to redesign the current TCC parking lot and expand it into the adjacent properties with the goal of 200 additional stalls. It was requested that the parking lot have a minimal maintenance stormwater BMP to treat the new runoff. Due to highly contaminated soils infiltration was not allowed and all excavated material had to be disposed of offsite. To maximize the area for parking an underground stormwater storage chamber was designed to treat stormwater runoff and provide rate control.