R2008-147 AUTHORIZING AN AGREEMENT FOR WATER DISTRIBUTION SYSTEM LEAK DETECTION SURVEY

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. • • Classifcation of Leaks ADS maintain the following classification of leaks,which will be shown on each individual leak sheet and in the final report: Class Definition ] Leaks that are hazardous in terms of potential underground washouts, possibly resulting in surface collapse,encroachment and/or damage to nearby utilities,commercial and private properties or leaks that indicate leakage to be severe enough to warrant immediate repair. 2 Leaks that display water losses significant enough to be placed on a" regular repair schedule 3 Relatively small leaks that should be repaired as work time permits Reporting We will meet with the designated City representative 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 the City's designated representative that will include: • Miles surveyed that week • Miles surveyed to date • Totai estimated water loss � • Number of leaks and suspected locations • Hours worked that week Safety All inspection work is performed in accordance with OSHA regulations for"confined space entry".All field personnel attend yearly training and certification in Confined Space Entry,First Aid and CPR,in addition to an on- going,in-house training program.All field personnel wear appropriate company uniforms and/or identification badges,along with safety vests.Each vehicle/crew is equipped with a cellular telephone. Final Report Our final report will summarize the project and show the results of all tests and investigations.This report will include: • A comprehensive list of all leak locations and estimated quantity of leakage found • An inventory of defective system components and map errors • 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 price for water — Cost of the survey itself Schedule of Work ADS will be available to begin the survey within four weeks of notice to proceed.Based on the number of miles,it is estimated that the field portion of the project will take approximately 35 working days to complete depending on weather conditions and the number of leaks located.The technician can usually cover approximately 5 to 6 miles of pipe per day during the sounding phase,depending on weather,traffic conditions and the number of leaks identified. E�chibits ADS Environmental Services