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

8. ANNEX A: Levels of Service
          STORMWATER DRAINAGE & FLOOD MITIGATION SERVICE LEVEL CATALOGUE



    Service Output                     Provision and maintenance of a stormwater drainage network and
                                       other measures to minimise impacts to the road transport network,
                                       infrastructure, private property and the environment.
    Service Activity                   The activities include regular inspections and routine works to
    (Maintenance)                      ensure drainage lines are free flowing, that the impact of
                                       contaminants being washed into the ocean/waterways is
                                       minimised, that flood mitigation measures perform to design
                                       criteria and that accurate information is available to respond to
                                       flooding events.
    Responsible Area2                  Department                           Branch
                                       Infrastructure Services              Civil Operations (Civil Works &
                                                                            Maintenance)
                                                                            Asset Management (Flood
                                                                            alert/gauges)
    Cost Centres                       Drainage                             2005
                                       Asset Management & Service           2105 (Flood Alert Stations / Height
                                       Programming                          Gauges only)
                                       Department Management –              1900
                                       Director Infrastructure Services
                                       Management Civil Operations          2000
                                       Works Operations Coordination        2021
                                       Works Operations                     2704
    Key Statistics3                    Stormwater Drainage assets           22,830 items
                                       Length of stormwater drainage           281 km
                                       network
                                       Stormwater Quality Improvement          18 (major)
                                       Devices’s (SQID’s - include gross       44 (minor installations)
                                       pollutant traps, pit baskets, trash
                                       racks etc.)
                                       Stormwater bio-retention basins         46
                                       Flood Alert Towers/structures           22
                                       Flood Alert Stations (tower in          23
                                         Pomona has 2 stations on
                                         structure)
                                       Flood Alert - Repeater hardware -       1
                                       Mt Wolvi
                                       Food Alert - Telemetry receiver         1
                                       hardware
                                       Flood Maximum Height Gauges             46
    Legislative responsibility to      None.
    provide this service
                                  ACTIVITY                                          SERVICE LEVEL TARGET
    Stormwater system maintenance & operations
    [Includes inspections and routine maintenance/repairs of culverts, pipes, inlet pits & outlets, subsoil
    drains, open channels, retardation basins, retention basins and gross pollutant traps to ensure the
    stormwater drainage network is operating effectively]




2
    Refer to Asset Responsibility Matrix for specific areas of responsibility
3
    Source Stormwater Asset Management Plan adopted 22 October 2015 – data subject to further validation.

Asset Management Plan: Stormwater Infrastructure                                                            Page 21