Response to Information Request - Received on 19/04/2012 · OPW11/0335

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           Inflow and outflow water needs to be collected as paired                                       samples within a short time
          frame, with each pair representing the same phase of stormwater activity. The volume
           of stormwater generated in the catchment can be calculated by the area of catchment
           and      intensity of rainfall during the event. The proportionate change in the
                  the
           suspended solids loads in stormwater flowing over the construction site will provide a
           measure of the sediment being generated from the construction site.



           Herbicide monitoring in stormwater entering and leaving the construction site should be
           performed           when     applications           are     known         to   occur, rather            than   routinely.          Some
           herbicides have a short residence time, so arrangements may need to be made with the
           laboratory for rapid courier service and turnaround time. The monitoring schedule is
           listed in Table 11-3


11.2       Water Quality Monitoring During Routine Operation of the Essence of Peregian


          Sampling should be performed at sites 1 to 9 (depending upon staging). The temporal
          sampling frequency is recommended at monthly intervals for the first 12 months, with
          quarterly sampling thereafter (Table 11-3). This temporal frequency is intended to show
          the proportional improvement from the existing water quality condition in response to
          improved stormwater management associated with the new development. Seasonal
          variations can be identified from the quarterly samples. Herbicide monitoring is as
          described for the construction phase.


    Table 11-3: Monitorin ~ Schedule for the Construction and Operational Development
                       Site     Site     Site          Site    Site     Site     Site     Site    Site        Site   Site   Site       Site   Site
 Parameter
                       1        2        3             4       5        6        7        8       9           10     11     12         13     14
                                                                       )’.                        .
                                                                                                          "




 Rainfall                                                                                                     S
                                                                                                          .

                           .        .        .                     .         .       .        .



 pH                    M        M        M         M’          M        M        M        M       M’      .

                           .        .        .                     .         .       .        .       .


 Dissolved             M        M        M         M’          M        M        M        M       M
 oxygen
                                                                                 ’                    .
                           .        .        .                     .         .       .        .
                                                                                                              .

 BODs                  M        M        M         M’          M        M        M        M       M
                           .        .        .                     .         .       .        .   ".

 Suspended             M        M        M         M’          M        M        M        M       M                  S      S         S       S
                                                                                                          r
 Solids
                           .        .        .                     .         .       .        .       .


 Total                 M        M        M         M’          M       M         M        M       M
 Nitrogen
                           .        .        .                     .         .       .        .       .


 Total                 M        M        M         M’          M        M        M        M       M
 Phosphorus
                           .        .        .                     .         .       .        .       .


 Herbicides            M        M        M         M’          M       M         M        M       M                  S      S         S       S
                           .        .        .             .       .         .       .        .       .


 Faecal                M        M        M         M           M       M         M        M       M
 coliforms
                           .        .        .                     .         .       .        .


 Enterococci           M        M        M         M’          M       M         M        M       M’
                           .        .        .                     .         .       .        .       .



 Turbidity             M        M       M          M’          M       M         M        M       M

M   _

        monthly monltonng dunng construction and dunng the first two years of operation; quarterly mOnltonng dunng
the second year and thereafter,
S = Monitoring during stormwater flow events




@2012 Simmonds & Bristow Pty LId                               Contrast Constructions                                J-1005-310   _
                                                                                                                                      22 March 2012
I :\CLlENTFILES\Contrast Constructions\1108-155c   -
                                                       Essence of Peregian SCEP Stage 1 Updatel09  _
                                                                                                       Output Documentsl11 08-155C_SWMP
SCEMP_Scanlon Property Group_V4 O_ta_120321,doc                                                                                       Page 21 of 24