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?~Ol~OSal <br /> Comprehensive Water Distribution System Audit <br /> <br />Depending on the size of the elevated tank, a very large Meter and Billing <br />leak may be required to permit detection by this method. Activities Review <br /> · ' Determine the extent of and reasons for unaccounted <br />For instance, a typical 500,000-gallon elevated tank has for water. <br />a bowl with a 55-foot diameter. The bowl volume is 17,771 <br />gallons per foot, and if a one-foot diow down is needed in · Gather data on 'noncustomer" metered/non- <br />a two-hour time, the minimum leakage rate that can be metered flows to account for uses not billed to <br />detected is 150 gpm. For a 1 MG elevated tank with a 70- customers such as main flushing, fire usage, sewer <br />foot diameter bowl, the mini mum leak detection rate would <br /> cleaning, hydrant testing, and other municipal <br />be 250 gpm. activity usage. <br />Analternafivemethodistoisolateportionsofthedistribution · Compare customer metered consumption with <br />system and pressure test the system with a portable pump purchased water amounts on a monthly, quarterly, <br />andwaterstoragetank. Thepumpcanbeconnecteddirectly end annual basis noting any changes in <br />to the outlet on any fire hydrant, and the leakage measured comparative data during peak and non-peak <br />reasonable precisely with a conventiooal water meter, periods. <br /> · Determine the remaining unaccounted for water <br />Once the areas with high leakage potential have been amount after considering estimates of the known <br />identified, sonic leak detedion methods will be employed to uses noted above. <br />confirm the locations of major leaks. Consider sectioning-off selected portions of the <br /> distribution system for more detailed analysis of <br />Review Of Billing unaccounted for water if warranted by the above <br />Procedures analysis. <br />The Carter & Burgess management consulting staff will <br />review the existing billing system with the objectives of: '~' Review the procedures and processes of managing <br /> meter activities. <br />· ~' Identifying inactive accounts that ore actually adive. <br /> · Gatherdata on: <br />· Determining the small users. - metered consumption by customer class <br /> - meter sizes by customer class <br />'~' identifying the large users, and checking the meter - meter routes and number of meters per route <br />size. - types and age of meters by size currently active in <br /> the system <br />~ Identifying duplicate accounts. · Review data and evaluate meter replacement policy, <br /> route efficiency, effectiveness of meters by type and <br />'~' Identifying unbilled customers, and determining how brand, and repair versus replace policy. <br />to collect revenue. · Provide a cost and benefit evaluation of a scheduled <br /> replacement and resizing program. <br />Additionally, the metered revenues, meter routes, meter · Review capabilities of the curreat utility billing <br />schedules, etc. will be carefully reviewed and evaluated, system andthe inter~acetothe meterreading system. <br />and Carter & Burgess will prepare recommendations on <br />improvements to the system. <br /> <br />Carter Burgess 19 <br /> <br /> <br />