2019-02-12 Attachment 1 to Item 3 - Stormwater Infrastructure Asset Management Plan

4. Lifecycle Management Plan
        Assets
Council’s Stormwater Infrastructure plays a vital role in managing stormwater drainage within the
Noosa Shire. There are many different asset types within the Stormwater Infrastructure asset
management plan, with various units of measurement.

These assets included in this AMP are summarised below:

            o   9,331           Pipes (223km)
            o   9,640           Pits
            o   3,312           Structures
            o   14              Bio retention Basins
            o   15              Gross Pollutant Traps (GPT)
            o   9               Open drains



        Asset Valuation
The value of the Stormwater Infrastructure Assets, at the end of the financial year 2017/2018 for the
purposes of this AMP is summarised below.

                     Current Asset               Accumulated
      2018                                                           Written Down Value
                         Cost                    Depreciation


  Totals            $ 177,738,098            $       57,692,742     $   120,045,357

Table 1: Stormwater Infrastructure Asset Valuation



        Asset Condition
Levels of service and asset management decision making is directly linked to asset condition; this
determines what condition the asset should be in before an asset management intervention. The
intent of current and future Condition Assessments (CA) is to:
•     Provide a robust and repeatable process for carrying out condition assessments on Council’s
      Stormwater Infrastructure assets;
•     Use condition assessments to develop programs for intervention with regards to further
      inspection, monitoring, maintenance and renewals;
•     Provide a basis for information for the modelling of condition data for likelihood of asset failure
      for those assets not inspected.

A consistent condition ranking scale has been chosen by Council as the framework for measuring
Stormwater Infrastructure assets, based on the 1 to 5 ranking according to the International
Infrastructure Management Manual (IIMM). Any asset scoring 4 (fair) to 5 (poor) will be considered
and prioritised under an asset specific renewal program.

On the completion of the data reconciliation process, the collected condition assessment attributes
will be loaded into the Technology One asset system, the data will be analysed and modelled to
create a renewal program for those assets. It is anticipated that it will take 3 -5 years to complete a
full stormwater network condition assessment.

Asset Management Plan: Stormwater Infrastructure                                                  Page 8