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Discussion: City of Hudson Sanitary Sewer Model, completed by CTI Engineers Inc.
Executive Summary: This sanitary sewer model was completed by Dave Kohlmeier and Todd Taylor of CTI Engineering, Inc. The new model included the monitoring, study and evaluation of the City's trunk sanitary sewer system, for sanitary sewers ten inches in diameter and greater, as well as other identified branches of the gravity sewer system.
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Legislative History
Resolution 13-144, passed November 20, 2013
Purpose & Explanation
Since 2004, the City of Hudson has completed a number of significant capital improvements and maintenance projects throughout the sanitary sewer system including sewer manhole rehabilitation, sanitary sewer lining and sewer replacement projects. As a result, an updated, comprehensive model was needed to determine the City's next course of action. The model's goal was to determine the areas of the system with the largest inflow and infiltration (I&I) and to identify methods to help in the effort to close the City's two remaining sanitary sewer overflows and potentially eliminate the Ohio EPA's consent order. In the fall of 2013, the City hired CTI Engineers Inc. to provide accurate flow metering data for dry and wet weather conditions within the sanitary sewer trunk system; create a new computer based sanitary sewer model; calibrate and analyze the data within the model. The model determined solutions to alleviate the number of sanitary sewer overflows from occurring and limit the amount of inflow and infiltration thereby reducing flows that are being treated by the Northeast Ohio Regional Sewer District.
The model identified the following:
o A total of 16 flow meter locations and corresponding drainage areas were chosen to target specific areas that may contribute high areas of inflow and infiltration.
o Of the 16 drainage areas, two (2) were identified has having relatively higher amounts of I&I. They are areas "J" (13%) and "L" (2...
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