R2010-100 AUTHORIZING AGREEMENT WITH TELE SCAN, INC

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2. Manhole Inspections: Manholes are often a weak link in the sewer system in that they are direct access points to the sewer system. Many manholes are located on streets and are subject to traffic loads and heavy storm water inflow. These forces often have a significant effect on the structural integrity of a manhole and the sewer system in general. A significant step in improving the overall reliability of the City's sewer system and decrease storm water inflow is to gain information on the condition of the City's manholes and improve them. 3. Smoke Testin�: This work involves forcing smoke through a sewer line to determine if there are holes in the line that allow storm water to flow into the line causing sewer overflows. Smoke testing can be used to identify illegal sewer connections and damaged pipe. 4. Manhole Rehabilitation: A contract unit price is provided to allow the contractor to repair damaged manholes without going to the expense to dig it out and replace them. If manhole deterioration is caught early enough, a significant amount of money is saved by lining to restore its structural integrity. 5. Point Repairs: Point repairs involve placing a small liner to repair a specific spot of damaged pipe without having to resort to digging the pipe up and replacing it. As with manhole rehabilitation, if pipe damage is caught early enough, there are significant cost savings in spot lining a damaged section ofpipe as opposed to digging it up. 6. Special Studies: This work involves investigating the sewer system to find unknown connections, unknown manholes or pipelines. Special studies have been made to identify sources of abnormally heavy flow in sewers, locations where storm water is infiltrating into the pipe causing overflows, or where there are incidents of heavy grease clogging the line causing sewer backups. 7. On-Call Inspections: On-call inspections are generally used to investigate critical sewer problem$ such as sinkholes, blocked sewer services or mains, maintenance problems and some residential complaints. The ability to quickly get a camera into a line that is experiencing a failure of some type provides maintenance staffwith a large amount of information to be used in determining a proper course of action. Staffproposes to focus televised inspection efforts on sewers in the city that currently have not been televised. Having televised data of all the sewers will assist staff in creating a GIS database for the City's sewer system condition assessment. Significant efforts will also be directed toward inflow and infiltration(I&I) reduction in the sanitary sewer system. Ground water and storm water intrusion intq the City's sanitary sewer system is a significant cause of backups and overflows. Televising and smoke testing are crucial elements in I&I reduction efforts. Request for Proposals In March 2009, the City's Engineering and Infrastructure Department obtained proposals from firms interested in providing pipeline inspection services for up to three fiscal years beginning with Fiscal Year 2010. Proposals were sent to ten firms who perform televising and inspection services within Illinois. Proposals were received from: Tele Scan, Inc. of Mt. Zion, Illinois Walden Associated Technologies, Inc. of Glen Carbon, Illinois Page � �