Atlanta, GA This combined project addresses both trunk infrastructure and collection system needs across the Sugar Creek Basin. The trunk sewer replacement component increases the capacity of the sanitary sewer system to convey additional flow resulting from a 2-year, 3-hour design storm event without Sanitary Sewer Overflows (SSO’s), meeting the City’s First/Second Amended Consent Decree performance requirements. Capacity-limited segments of the Sugar Creek Basin Outfall and Trunk Sewers are being replaced using a design-build delivery method, with all pipe and manholes installed in existing horizontal alignment at existing invert elevations, utilizing microtunneling technology in designated segments.
The collection system rehabilitation component encompasses renewal and rehabilitation of selected portions of the City of Atlanta sewer collection system at multiple locations. Work includes bypass pumping operations, preconditioning and cleaning of manholes, comprehensive CCTV inspection, point repairs, pipe replacement, jack and bore installations, and replacement of lateral sewer services from main to edge of right-of-way or easement. Various testing protocols ensure system integrity throughout the rehabilitation process, with erosion and traffic control measures protecting the public and environment.
Construction materials are specified as ductile iron pipe and precast concrete manholes without substitutions, ensuring long-term structural integrity. This comprehensive approach addresses both major trunk capacity requirements and distributed collection system rehabilitation needs, delivering enhanced system reliability and regulatory compliance across the Sugar Creek Basin.
Completing installation of over 24,000 linear feet of gravity sewer outfall in 11 months with up to 70 crew members operating simultaneously among 6 construction crews. The aggressive schedule required permitting & construction to occur in phases to achieve the completion date. Multiple scope changes & re-alignment of pipe & manholes took place due to unknown infrastructure, numerous obstructions and the addition of 2,000 linear feet of pipe with only weeks remaining in the schedule.
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