Geotech Report - Initial Findings

Essence of Peregian
215-219 David Low Way, Peregian Beach
Project No. 007-160A,
27 April 2010




       SECTION 2 - THE SITE
       2.1       Previous Investigation

       Butler Partners has previously carried out an Acid Sulfate Soil (ASS) assessment at the site and the results
       of this investigation are detailed in the following report:

                 Acid Sulfate Soil Assessment
                 Residential Development
                 215-219 David Low Way, Peregian Beach
                 Project No: 07160       Dated: 18 June 2007

       The ASS assessment comprised the drilling and sampling of six bores (Bores 1 to 6) with samples taken for
       laboratory testing. The subsurface conditions encountered in the bores generally comprised a surface layer
       of either fill material (in Bores 1 to 4), that varied up to a maximum depth of 0.8m, or silty sand (in Bores 5
       and 6) to a maximum depth of 0.4m. In Bores 1 and 2 only, the fill was underlain by natural, dark grey-brown
       silty clays that were underlain in turn by silty sands that were indurated below 2m depth. In Bores 3 to 6, the
       surface fill or silty sand layer was underlain by sands.

       Free groundwater was encountered during the drilling of four of the six bores at the depths/levels given in
       Table 1.
       Table 1: Summary of Particle Size Distribution Test Results

                                                  Groundwater Observations from June 2007
               Bore                       Depth                                     Reduced Level
                                           (m)                                          (m)
                 1                         0.8                                           RL2.3
                 2                         0.8                                           RL2.3
                 3                         1.5                                           RL6.0
                 4                                              Not encountered
                 5                         1.6                                           RL5.9
                 6                                              Not encountered


       The results of the laboratory testing indicated that, in general, the fill material and natural sands and silty
       sands were not ASS. The natural silty clays indicated levels of actual acidity below laboratory reporting
       limits, with one exception. The silty clays were therefore considered to include an apparently limited amount
       of ASS, potentially at isolated locations.




butlerpartners.com.au                                                                                           Page 3