Rolling Meadows, Illinois – RJN updated its 10-year master plan in 2014, providing a short- and long-term approach to identify and remediate “critical” sewers as required by the new MWRD Inflow/Infiltration Control Program (IICP). GIS maps illustrated recommended measures, outlined plans, provided estimated costs, and showed key areas of concern providing the basis for I/I reduction measures and annual reporting required under the IICP.
Wilmette, Illinois – The Village of Wilmette had been experiencing backups and flooding in its sewer system during storms. The Village enlisted RJN to construct and calibrate a hydraulic model to evaluate the collection system performance and identity recommendations to remediate overflow conditions. Modeling runs were executed to simulate 1-year, 3-year, and 5-year storm levels to assess system capacity during dry- and wet-weather and system bottlenecks, and to evaluate various I/I reduction measures.
Baltimore County, Maryland – RJN was selected to assist Baltimore County with developing Sewershed Repair, Replacement, and Rehabilitation plans (SRRR) and services in compliance with its Consent Decree. RJN prepared the SRRR plans for four sewersheds in the southeast portion of the County’s service area. These plans involved reviewing available data, performing condition field inspections, and developing recommendations for rehabilitation.
Jonesboro, Arkansas – Jonesboro City Water & Light sought RJN’s help to validate the accuracy of flow data collected through an ongoing program and to construct and calibrate a hydraulic model to evaluate the performance of their collection system. The flow data verification process required a complete review of the data including conducting in-situ calibration measurements to validate the equipment accuracies over the measurement period.
Jenks, Oklahoma – RJN was selected to assist the City with updating its current master plan that had been authored in 1998. The collection system—110 miles of sewer and 27 lift stations—needed a current plan to address future development needs and provide a basis for long-term capital planning. Master planning involved flow monitoring, hydraulic modeling, and analysis to develop recommendations for a 30-year planning period.