City of Atlanta | Department of Watershed Management
Read MoreCity of Atlanta | Department of Watershed Management
Read MoreCity of Atlanta | Department of Watershed Management
Read MoreDeKalb County Department of Watershed Management
Read MoreRoswell, GA
In coordination with GDOT’s GA-400 Express Lanes project, City of Atlanta Department of Watershed Management (DWM) agreed to relocate roughly 5200 LF of 48” water transmission main outside of the GA-400 right of way. Benchmark Management teamed up with Ruby-Collins for this design-build (DB) contract. The alignment follows Old Alabama Road in the City of Roswell beginning at the Chattahoochee River, which required extensive permitting.
The overall project delivery schedule was extremely aggressive so DWM ordered 70% of the material while writing the RFP to minimize material procurement time. Benchmark was responsible for figuring out where the material fit into the design, which added a level of difficulty. The project was also broken into phases to begin construction on the bulk of the pipeline while still working on design and permits for other phases.
The project was completed within the contract deadline, made possible by advanced material procurement, the design-build contract, and the phased approach to construction and permitting.
Atlanta, GA
The rehabilitation and repair of approximately 6,500 linear feet of various size existing sanitary sewer pipes, ranging in diameter from 8 inches to 36 inches, located throughout the northern and central airfield within SIDA, as well as outside of SIDA at South Cargo. The rehabilitation is classified as either Grade 4 or Grade 5 based on the NASSCO PACP scale. The chosen method for rehabilitation is the Sekesui spiral wound liner repair method, which is expected to reduce the need for extensive bypass systems on the airfield, can be installed during low-flow, off-peak hours overnight, and minimizes impacts to regular airport operations.
Atlanta, GA
The North Fork Peachtree Creek Tank and Pump Station Project will construct an off-line temporary 15-million-gallon storage tank for peak wet weather sewage flow, supported by a 75 MGD pump station. During significant wet weather events, peak flow will be diverted from the North Fork trunk sewer to the off-line storage tank. The stored flow will be returned to the trunk sewer after the wet weather event. The goal is to significantly reduce the number and volume of sewer overflows along the entire Peachtree Creek trunk sewer system, including eliminating sewer overflows during a 10-year, 4-hour storm and smaller back-to-back storms.
Clayton, GA
Benchmark Management is the engineer-of-record (EOR) for the 6 culvert replacement projects. Benchmark Management provided the Clayton County Water Authority with hydrological study, hydraulic modeling, and detailed engineering design. We also provided engineering support during construction.
Atlanta, GA
Atlanta, GA
DeKalb, GA