080624 2383-01 FINAL Engineering Report for DA.pdf [As Published] · 132008.1128

BLUE CARE SUNRISE BEACH
ENGINEERING REPORT FOR DEVELOPMENT APPLICATION




3.            WATER SUPPLY & SEWERAGE INFRASTRUCTURE
              ASSESSMENT

3.1      SITE CHARACTERISTICS
The proposed development has the potential to impact on the reticulated water supply and
sewerage networks and cause the level of service provision to be reduced. This document
outlines the assessment undertaken to ensure that the proposed development does not
cause the level of service provision to fall below the minimum service standards adopted
by the Sunshine Coast Regional Council (SCRC).

3.2 DESIGN CRITERIA
The design criteria for water supply and sewerage were extracted from the Sunshine Coast
Regional Council (Noosa) Planning Scheme Policy 6 – Engineering Design Standards
Water Supply & Sewerage.

     3.2.1         Water

     Maximum Hour Demand
     The Maximum Hour (MH) unit demand is shown in Table 3.1. The land area method,
     when used, considers per hectare of lots only – excluding roads etc.

     Table 3.1, Maximum Hour Demand by Land Use Type
                        Zone                   Maximum Hour Flow
      Detached Housing                              0.0809               L/s/lot
      Commercial                                     4.91                L/s/ha
      All other development
                        Population Density
                                   100 EP/ha          3.3               L/s/ha
                                   160 EP/ha         5.28               L/s/ha
                                   250 EP/ha         8.35               L/s/ha
                                   320 EP/ha         10.56              L/s/ha


     Minimum Reticulation Size
     Water reticulation mains shall be a minimum size of 100mm diameter in residential
     developments and a minimum of 150mm diameter in commercial, industrial, and high
     density residential developments. Commercial and industrial developments shall be
     provided with a main on each side of the road reserve to eliminate the requirement for
     service crossings.

     Table 3.2, The Hazen Williams Coefficient, C
         Nominal Diameter (mm)                        C
                    100 - 300                        110
                     > 300                           120




Blue Care Property Development Unit                       Version 1.1                     24 June 2008
2008 06 24 2383-01 Engineering Report for DA         Commercial in Confidence                  Page 14