Acid Sulfate Report

                                25 EDWARD STREET, NOOSAVILLE
                                PROPOSED DUPLEX DEVELOPMENT

Given our understanding of the proposed development, ground disturbances are expected to be limited to
stripping of topsoil, filling of the site, construction of sewerage and stormwater infrastructure and construction
of footings. Construction of the pool at the rear of the site is also expected to extend up to 1.5 m into the
existing ground profile. These disturbances are all expected to be limited to within 2 m of the existing ground
surface level.

2.2       Regional Geology
Reference to the Geological Survey of Queensland 1:100,000 scale Gympie map indicates that the soil
profile at the subject site consists of Pleistocene age alluvium (Qpe), associated with estuarine and flood
plain conditions (sandy mud, muddy sand, minor gravel).
Regional geology for the subject site is illustrated on Text Figure 5 below.

   Qpe

   Age         Pleistocene
               Estuarine
               deposits:
   Lithology   sandy mud,
               muddy sand,
               minor gravel
               Miscellaneous
   Dominant
               Unconsolidated
   Rock
               Sediments




Text Figure 5: Extract from Gympie Special 1:100 000 Geological Map, Laguna Bay Sheet 9545 (1999)

2.3       Regional ASS Mapping
An extract from the Queensland Government’s Redcliffe to Teewah Acid Sulfate Soils Map 2 (NR&M-SEA-I-
A0 3261) covering the region is shown in Text Figure 6 on the following page. Mapping indicates the
presence of “SDL” land type, which indicates disturbed land likely to contain ASS, where in some cases
partial or full treatment may have been previously undertaken.
It should be noted that ASS risk mapping does not definitively indicate the presence nor absence of ASS at a
particular site, but rather provides an indication of terrain where ASS is likely to occur. The presence or
absence of ASS at a site may only be confirmed by completion of a site investigation, involving an
appropriate degree of site assessment and quantitative analysis.




25 August 2017
Report No. 17265-001-Rev0                               3