Lawrence Sanitary Sewer Evaluation Study and CMOM Program
American Structurepoint conducted a city-wide sanitary sewer evaluation study (SSES) to address wet weather capacity issues of Lawrence's over 800,000 feet of sewer. As part of the SSES, over 150 miles of sanitary collection system was evaluated, including the flow monitoring; manhole inspections; smoke testing; and sewer cleaning, televising, and dyed water-testing services.
The SSES includes flow monitoring and analysis of 54 basins to determine the areas that have the highest rain-derived inflow and infiltration. The flow monitoring led to conducting and evaluating field data (manhole inspection, television inspection of sewers, and smoke testing), creation of a sewer system model, evaluation of hydraulic capacity issues, determination of rehabilitation or replacement options to correct deficiencies, and development of a 20-year master plan. Preparations of a sanitary sewer overflow response plan and capacity management operation and maintenance (CMOM) program were also completed. The study also included review of operation and maintenance records for 23 pump stations located throughout the city, development of a plan to eliminate sanitary sewer overflows, and a comprehensive capital improvement plan for the sanitary collection system. An in-depth review of detailed record plans and GIS-based mapping allowed for development of project costs for rehabilitation and potentially eliminating lift stations by creating regional lift stations. The original study was funded with a State Revolving Fund Loan. With funds remaining at the conclusion of the study, a PER amendment was prepared to allow the funds to be utilized for rehabilitation of the collection system. The amendment presented the alternatives that were evaluated and considered the impact to the environment and benefits to the city.
GIS was utilized to track and maintain the incoming data. American Structurepoint worked closely with the City of Lawrence Utility Department and their in-house GIS Coordinator to supply the City with clean and accurate data collection. This data was then turned over to the City so it could be uploaded into the existing GIS. As a result, the Utility Department has recent and accurate system data at their fingertips.
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Awards + Recognition
Engineering Excellence Awards
Engineering Excellence Awards