R2014-86 AUTHORIZING EXECUTION OF WATER DISTRIBUTION SYSTEM LEAK DETECTION SURVEY

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Reporting We will meet with the designated City representative on daily basis and deliver any leak reports from the previous day's work. Leak sheets will be prepared with a sketch of the location, leak classification and estimated water loss. We will also prepare a progression map with symbols that indicate leaks and classification corresponding to the leak report. ADS will prepare and submit a consultant's weekly report to City's designated representative that will include: • Miles or Feet surveyed that week • Miles or Feet surveyed to date • Total estimated water loss • Number of leaks and suspected locations • Hours worked that week Final Report Our final report will summarize the project and show the results of all tests and investigations.Three hard copies of this report will be included and will include: • A description of the area surveyed • An overview of the methodology and equipment used for the survey • A comprehensive list of all leak types and locations and estimated quantity of leakage found • An inventory of defective system components and map errors encountered during the survey • Sketches of the individual leak locations • Estimated benefits-to-costs resulting from completing the leak survey effort taking into account: Estimated water loss from the leaks discovered during the survey City's production/purchase price for water Cost of the survey itself Schedule of Work ADS will be available to start the survey within three weeks of having a signed agreement. Based on the number of miles, and for each year of this project, it is estimated that the field portion of the project will take 35 working days to complete.The technician can usually cover approximately five (5)to seven (7) miles of pipe per day during the sounding phase, depending on weather and traffic conditions.The time needed to pinpoint leaks depends upon the number of leaks discovered and their level of difficulty. As previously discussed,we have found that two days of sounding the system should be followed by one day of resounding and correlating at each potential leak location.The leak survey will be conducted primarily during normal working hours with additional leak detection being conducted during late evening and/or early morning hours if necessary in areas of high traffic volume.The final report will be submitted within 30 days of the end of the field work. ofiXVHK7W0ffAL 1880 W.Fullerton Ave. Chicago, IL 60614 Page 6 Client Initials