Chastain Skillman (CS) was retained for civil engineering and surveying services for the construction of an industrial biomass electrical generating facility. The site is located in the City of Fort Meade, north of CR 630 and west of US 17. The site was formerly mined for phosphate and consisted predominately of upland pasture and various wetland/floodplain systems.
The facility included the design of the 25-acre plant site and 12,200-ft 24-ft wide access road from CR 630 to the new plant site. The improvements impacted 6.1 acres of wetlands and other surface waters that CS delineated and permitted through the FDEP and ACOE. CS assisted the client the purchase of mitigation credits through the local mitigation bank to offset wetland impacts. On-site stormwater management systems were proposed that addressed the on-site improvements as well as systems to address off-site contributing areas.
CS also performed threatened and endangered species survey. Gopher Tortoise burrows were present. CS worked closely with U.S. Fish and Wildlife Service to address their concerns.
The site contained many undetermined flood plain areas. CS performed detailed flood analyses that incorporated a 720-acre study area and established Base Flood Elevations (BFE) for the unmapped and undetermined flood hazard areas. A comprehensive H&H model was developed for the pre-and post-site conditions which incorporated floodplain fill and flood plain compensation areas. CS obtained a FEMA Letter Of Map Revision (LOMR) for the site which also revised the floodplain in areas that would have affected the structures proposed for the plant site.