Title
Consider and take action on a resolution authorizing a professional services agreement with ARKK Engineers, LLC for analysis services related to the Sanitary Wastewater System Evaluation project (WW1801D) in an amount not to exceed $569,656 (Director of Budget and Project Management)
Background:
Approval of this resolution will authorize funding for the professional services agreement with ARKK Engineers, LLC for analysis services related to the Sanitary Wastewater System Evaluation Project (WW1801D).
In 2017, the City of League City embarked on a sanitary sewer infiltration and inflow reduction survey by performing a City-Wide evaluation of the sanitary sewer collection system by means of flow and rainfall monitoring and subsequent field investigations in selected basins that exhibited the highest amounts of inflow and infiltration. The purpose of the flow and rainfall monitoring was to prioritize the basins with excessive amounts of inflow and infiltration. The City-Wide flow and rainfall monitoring study identified basins LC-09, LC-19, and LC-22 to be exhibiting highest excessive amounts of inflow and infiltration and follow-up field investigations of these basins by smoke testing, dye testing, TV inspection, and manhole inspections were performed. The study recommendations from the field investigations were summarized in the “2017 Wastewater System Evaluation Report (2017 Study) submitted to the City in 2019”. The rehabilitation of the highest priority lines identified from the 2017 Study is scheduled to occur in 2020-2021.
This Phase 2 proposal incorporates the field investigations of the next highest inflow and infiltration priority basins (LC15, LC06, LC24, and LC09 (portion only - this basin was selected by the City due to on-going maintenance issues)) recommended from the City-wide flow and rainfall monitoring study (2017 Study) and recommended for further field investigation. The field investigation will include smoke testing, dye testing, T...
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