Appendix H Geotechnical Investigation - 14-16 Mary Street, Noosaville - Bounce Hostels 15.6.2018

J000605-001-R-Rev1                                                                                March 2018


Table B1.4: ASS Action Criteria.
                                                                                    Action Criteria
                                               Action Criteria
                                                                               > 1000 tonnes disturbed
          Type of Material                1-1000 tonnes disturbed
                                                                               (and major fill projects)
                                         Existing + Potential Acidity        Existing + Potential Acidity
                                                                          Equivalent sulfur Equivalent acid
Texture range            Approx. clay Equivalent sulfur Equivalent acid
                                                                          %S oxidisable     mol H+/ tonne
McDonald et al. (1990)   content (%) %S oxidisable      mol H+/ tonne
                                                                          (oven-dry basis) (oven-dry basis)
Coarse Texture
                              ≤5            0.03               18                0.03               18
Sands to loamy sands
Medium Texture
Sandy loams to light         5 – 40         0.06               36                0.03               18
clays
Fine Texture
Medium to heavy clays         ≥40           0.10               62                0.03               18
and silty clays


Results of the sixteen samples analysed are summarised below:

      All samples returned Titratable Actual Acidity (TAA) results below the action criteria of 18 mol H+/
       tonne (0.03%S), ranging from below the laboratory limit of reporting (2 mol H+/tonne) to 17 mol H+/
       tonne.

      Oxidisable Sulfur was present as SCR at levels above the action criteria of 0.03%S in seven of the
       samples analysed.

      One sample returned a pHKCl value exceeding pH 6.5 and therefore analysis for acid neutralising
       capacity (ANC). The sample contains low to moderate levels of ANC at 81 moles H+/t.