Acid Sulfate Management Plan · MCU16/0103

FPE Ref: 4956-161019-1.0


          pHFOX: A result of pH <3, plus a pHFOX reading >2 pH units below the pHF, plus a strong reaction
           with peroxide, strongly indicates the presence of PASS.

The results of field pH testing were then compared to the relevant criteria for interpreting field test results
specified in the above mentioned Guidelines to determine the presence of ASS. These criteria generally
relate to the reaction of soils to hydrogen peroxide, the pH of soils after oxidation and the difference
between pH before and after oxidation.


3.4 LABORATORY ANALYSIS
On the basis of field pH results selected samples of high reactivity and low pH were forwarded to the
laboratory for further analysis. All of these samples were analysed using the S CR methodology (Reducible
Chromium method).




October 2016                          Acid Sulfate Soil Investigation Report                                9
                                            New Duplex, Noosaville