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<br /> <br />Meter and Billing <br />Activities Review <br />* Determine the extent of and reasons for unaccounted <br />for water. <br /> <br /> <br />Proposal <br />Comprehensive Water Distribution System Audit <br /> <br />Depending on the size of the elevated tank, a very large <br />leak may be required to permit detection by this method. <br /> <br />For instance, a typicaI500,000-gallon elevated tank has <br />a bowl with a 55-foot diameter. The bowl volume is 17,771 <br />gallons per foot, and if a one-foot draw down is needed in <br />a two-hour time, the minimum leakage rate that can be <br />detected is 150 gpm. For a 1 MG elevated tank with a 70- <br />foot diameter bowl, the minimum leak detection rate would <br />be 250 gpm. <br /> <br />An alternative method is to isolate portions of the distribution <br />system and pressure test the system with a portable pump <br />and water storage tank. The pump can be connected directly <br />to the outlet on any fire hydrant, and the leakage measured <br />reasonable precisely with a conventional water meter. <br /> <br />Once the areas with high leakage potential have been <br />identified, sonic leak detection methods will be employed to <br />canfirm the locations of major leaks. <br /> <br />Review Of Billing <br />Procedures <br />The Carter & Burgess management consulting staff will <br />review the existing billing system with the objectives of: <br /> <br />* Identifying inactive accounts that are actually active. <br /> <br />* Determining the small users. <br /> <br />* Identifying the large users, and checking the meter <br />size. <br /> <br />* Identifying duplicate accounts. <br /> <br />* Identifying unbilled customers, and determining how <br />to collect revenue. <br /> <br />Additionally, the metered revenues, meter routes, meter <br />schedules, etc. will be carefully reviewed and evaluated, <br />and Carter & Burgess will prepare recommendations an <br />improvements to the system. <br /> <br />Carter ::Burgess <br /> <br />. Gather data on "non customer" metered/non- <br />metered flows to account for uses not billed to <br />customers such as main flushing, fire usage, sewer <br />cleaning, hydrant testing, and other municipal <br />activity usage. <br />. Compare customer metered consumption with <br />purchased water amounts on a monthly, quarterly, <br />and annual basis noting any changes in <br />comparative data during peak and non-peak <br />periods. <br />. Determine the remaining unaccounted for water <br />amount after considering estimates of the known <br />uses noted above. <br />. Consider sectioning-off selected portions of the <br />distribution system for more detailed analysis of <br />unaccounted for water if warranted by the above <br />analysis. <br /> <br />* Review the procedures and processes of managing <br />meter activities. <br /> <br />. Gather data on: <br />- metered consumption by customer class <br />- meter sizes by customer class <br />- meter routes and number of meters per route <br />- types and age of meters by size currently active in <br />the system <br />. Review data and evaluate meter replacement policy, <br />route efficiency, effectiveness of meters by type and <br />brand, and repair versus replace policy. <br />. Provide a cost and benefit evaluation ofa scheduled <br />replacement and resizing program. <br />Review capabilities of the current utility billing <br />system and the interface to the meter reading system. <br /> <br />19 <br />