2019-02-12 Services & Organisation Committee Agenda

SERVICES & ORGANISATION COMMITTEE MEETING AGENDA                           12 FEBRUARY 2019


The operational and maintenance expenses for stormwater infrastructure make up approximately
4% of the $90m annual budget. The capital works program fluctuates from year to year, however,
in the 2018/19 capital works program the capital investment of $635k for stormwater
infrastructure equates to only 2% of the $29.5m capital works program.
2.   Stormwater Infrastructure Assets
There are many different asset types within the Plan, with various units of measurement. The
assets are summarised below:
           o 10,623 (223km)        Pipes
           o 9,640                 Pits
           o 3,312                 Structures
           o 14                    Bio-retention Basins
           o 15                    Gross Pollutant Traps (GPT)
           o 9                     Open Drains

Stormwater infrastructure assets are critical infrastructure to the management of stormwater run-
off across Council’s communities. This Plan consolidates Council’s available data and analysis
on the stormwater infrastructure assets. It also presents the output of how systematic
approaches are applied by Council to optimally balance cost, risk and performance. This is
essential to meet forecast demand and the levels of service required.
3.   Stormwater Infrastructure Asset Condition
In asset reporting, an approach to linking individual assets to the specific asset class has been
undertaken. These assets are grouped consistently and reported accordingly throughout this
document. Any stormwater infrastructure assets that have reached condition 5 will be included in
the relevant renewal programs of the 10-year Capital Works Program.
The significance of the graph below is that pipes and pits represent a high asset value with the
highest units in condition 4 at a combined value of $36m. The current condition is based on the
remaining life of the asset. Through the proactive stormwater CCTV inspection program, it is
assumed from current trends in the condition of assets rated so far, that the majority of these
asset’s conditions will have a better condition than the age based approach. The ongoing
delivery of the stormwater CCTV program will enable the development of a robust renewal
program for the pipes and pits assets. The development of renewal programs for each asset
class is essential in further improving the 10-year Capital Works Program.




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