Project

Building Atlanta’s Future: Clear Creek Sewer Basin Construction Project by Willmer Engineering

Located near City Hall East in Atlanta’s Historic Fourth Ward

The Clear Creek Combined Sewer Basin Relief Project integrates a storm water management detention pond in the Historic Fourth Ward Park along the Atlanta Beltline Corridor between North Avenue and Ralph McGill Boulevard. The park represents the collaborative efforts of residents, businesses and private stakeholders intent on creating greenspace to improve the quality of life for those in the Fourth Ward. The detention pond reduces flooding from the upstream drainage area including areas of North Avenue and City Hall East.

The project features the storm water detention pond, formed by 40 retaining walls (approximately 50,000 SF), connected to the adjacent City of Atlanta combined storm sewer trunk line. The Clear Creek Storm Water Basin, which is the central visual amenity of Historic Fourth Ward Park, is a two-acre lake that serves as a striking aesthetic feature while helping the City to meet Federal Consent Decree requirements.

Willmer conducted a geotechnical investigation in late 2008 and presented recommendations for foundation support, dewatering, excavation and wall design parameters. Concurrently Willmer completed a Phase II Environment Assessment to determine the extent and impact of petroleum impacted soil, chlorinated solvent impacted groundwater from an adjoining trucking facility and lead/asbestos contaminated soils.

During construction, Willmer conducted footing inspections and materials testing for all retaining walls and managed the remediation of the soil and groundwater for Atlanta BeltLine, Inc.