outcomes. The status of each asset is prioritised based on the risk and maintenance tasks and programmes planned accordingly. 4.3.4 Summary of Operational Costs The main items of operational costs are shown in Table 10 Summary of Main Operational Expenditure 2012-14. Operational Expenditure 2012 2013 2014 General $ 313,152 $ 267,366 $ 411,147 Backflow preven - 22010 $ 25,472 $ 15,407 $ 28,053 Meter maintenan - 22030 $ 34,570 $ 46,788 $ 38,174 Meter reading - 22040 $ 10,754 $ 10,648 $ 11,632 Pump Stn Power $ 441,920 $ 359,138 $ 330,685 Pump Station Maintenance $ 156,746 $ 167,263 $ 115,794 Connection Mtce $ 272,358 $ 248,716 $ 302,861 Hydrant Mtce $ 2 5,169 $ 2 8 , 113 $ 4 4,007 Mains Mtce $ 268,656 $ 338,567 $ 317,148 Toby Mtce $ 99,621 $ 91,083 $ 103,473 Valves Mtce $ 45,825 $ 43,803 $ 47,410 Tment: Power $ 202,243 $ 303,337 $ 298,429 Tment: monitor $ 87,644 $ 109,605 $ 132,238 Tment: costs $ 235,068 $ 243,925 $ 285,221 Table 10 Summary of Main Operational Expenditure 2012-14 4.4 Renewal/Replacement Plan The renewal strategy is designed to maintain the overall condition and performance of the asset infrastructure through a continuous, progressive cycle of replacement. The renewal programme is formulated from: Age – the age of each asset is recorded in the asset management information system. A nominal useful life for every asset is allocated based on industry standards, experience or factual assessment. Condition – the condition of assets will be assessed through systematic survey and asset condition grading and also through casual observation during reactive or routine maintenance. Performance – information is gathered on the performance of assets through post-storm analysis of surcharging and surface flooding. Consent compliance issues are recorded and contaminant ingress or inflow incidents are investigated and traced to the source. Maintenance Costs –routine and reactive maintenance is recorded against individual assets. Both the quantum of maintenance and the costs are used to assess full life cost of asset ownership. Customer Service Delivery– requests for service and customer complaints are analysed. Economic Obsolescence – the availability of spares, skills, techniques or restricted access through re-surfacing etc. may pre-empt the physical useful life an asset. Page 66