The R2T team assisted the City of Atlanta Department of Watershed Management (DWM) with the development and implementation of a sewer system hydraulic model and subsequent condition assessment with wastewater monitoring and master planning services for critical infrastructure at the Hartsfield-Jackson Atlanta International Airport (HJAIA).
The HJAIA sanitary sewer contains infrastructure built and owned by the City of Atlanta and the City of College Park, but it is managed by the Department of Aviation (DoA). The system is characterized by many stakeholders and dominated by commercial, industrial, and institutional users with several unique features: atypical discharges associated with passenger activity, first-flush systems, deicing discharges, and fire safety training events. R2T conducted a vulnerability assessment and managed internal inspection of a key pipeline and wastewater characterization through a sampling plan to identify waste load quality issues. R2T assisted the DWM’s Flow Monitoring Division in implementation of a sewer metering program in a challenging, limited-access environment and in ensuing data quality reviews. R2T’s expertise was key in managing the development of a hydraulic sanitary sewer model in InfoWorks ICM.
The model was used by the R2T team, in combination with pipeline assessments, wastewater quality findings, and input from workshops with DWM staff, to develop a sewer master plan for the airport. The master plan included projections of wastewater flows in the future year of 2030 and alternatives for new infrastructure to best meet the objectives of both the DWM and the DOA while eliminating excessive surcharge for a chosen design storm. Cost estimations, feasibility assessment, and follow-up support of negotiations and meetings were provided by the R2T team.