2017-09-12 P&E Agenda - Attachments 1, 2 & 3 to Item 8 - Local Government Infrastructure Plan

 PIA Service Catchment      IPA Planning Scheme Zone               Conversion Rate
                            Urban Development                  Urban Developable area to
                                                                   Impervious area
                                                                    (IPA Planning Scheme
                                                             max allowable non-landscaped area)
                            Village Mix                                     0.9
                            Detached Housing                               0.65
 7. Pomona Town             Semi-Attached Housing                          0.76
                            Industry                                       0.85
                            Community Services                             0.85
                            Detached Housing                                0.8
                            Attached Housing                               0.82
                            Semi-Attached Housing                          0.76
 8. Noosa Heads             Community Services                             0.85
                            Business Centre                                 0.9
                            Visitor Mixed Use                               0.9
                            Neighbourhood Centre                            0.9
                            Detached Housing                                0.8
                            Attached Housing                               0.82
                            Semi-Attached Housing                          0.76
                            Industry                                       0.85
 9. Noosaville              Community Services                             0.85
                            Business Centre                                 0.9
                            Visitor Mixed Use                               0.9
                            Neighbourhood Centre                            0.9
                            Shire Business Centre                           0.9
                            Detached Housing                               0.75
                            Attached Housing                               0.82
                            Semi-Attached Housing                          0.76
                            Community Services                             0.85
 10. Tewantin               Business Centre                                 0.9
                            Neighbourhood Centre                            0.9
                            Detached Housing                               0.75
                            Attached Housing                               0.82
                            Semi-Attached Housing                          0.76


The ultimate impervious area possible for each urban development zone/type was derived
from applying the ultimate urban developable lot areas with their respective conversion
rates. The resulting ultimate urban impervious areas were then apportioned according to the
LGIP’s PIA development planning assumptions (total dwellings and gfa projections) to derive
the projected demand over time for each Stormwater PIA service catchment (refer to excel
spreadsheet: Stormwater Demand Calc.xlsx). The resulting total Stormwater demand for the
service catchments is summarised in Table 1.3 below:
Table 1.3 – Total Stormwater Demand (Impervious Hectares)
   PIA Service Catchment       2014       2016      2021        2026        2031      Ultimate
  1. Boreen Point Village       11.34      12.43     13.13       13.28       13.35        14.38
  2. Kin Kin Village             9.56      10.48     11.16       11.56       11.75        13.76
  3. Cooroibah Village           4.48       4.59      4.91        4.91        4.91         4.95
  4. Cooroy Town               124.18     128.57    151.01      157.96      174.72      213.91
  5. Eastern Beaches           252.12     255.39    259.98      271.12      286.34      305.87
  6. Cooran Village             23.18      24.19     28.92       29.04       31.82        39.65
  7. Pomona Town                54.42      57.59     68.14       68.38       74.40      110.72
  8. Noosa Heads               156.37     161.72    169.06      170.85      171.43      183.00
  9. Noosaville                262.76     274.12    291.25      298.88      302.98      371.39
  10. Tewantin                 247.08     252.05    261.06      264.66      266.06     306.05




                                             3