EXTRA-78176 - USA (Arkansas) - Wastewater Master Plan Services - Deadline November 20,2026

Vendor needs to provide wastewater master plan services to the government authority located in Arkansas.• Review the existing wastewater collection system through the city’s current GIS mapping, noting the existing size, material, and age of the pipe network, and determining if additional detailed survey information is needed on all or parts of the wastewater collection system prior to future phases; all project work completed or additional information gathered will be done utilizing the city’s survey control basis and will be incorporated into the city’s current GIS mapping system.• Review the 2018 wastewater master plan to understand deficiencies identified at that time, seasonal treatment volume changes, and recommended projects.• Review the 2025 5–year Repair and Replacement Plan to understand deficiencies, identify equipment upgrade needs, and treatment process improvements.• Work with city staff to develop a list of existing deficiencies and trouble areas within the wastewater collection system.• Compile and document historical WWTF and lift station flows.• Develop hydraulic modelling of the wastewater collection system and lift stations.• Perform flow monitoring to calibrate the wastewater model.• Perform hydraulic analyses on existing and future conditions to identify sanitary sewer mains near or over capacity.• Identify existing and future deficiencies that will impact the ability to meet system flow demand and comply with regulatory compliance requirements defined in the permit.• Develop a list of capital improvement projects for the collection system.• Develop a volumetric flow and process model.• Analyze the volumetric flow capacity and contaminant removal effectiveness of the WWTF.• Develop a WWTF capital improvement plan to meet future ADEQ and EPA requirements.