07/1571 - Response to Information Request [As Published] · 142007.1571

Project 305-2325

~~~" “February, 2006 ° ~~ ~ oo “Page 15

 

80 ACID SULFATE SOILS ASSESSMENT

As shown in the summary table of quantitative ASS laboratory test results (Table 1), the
Scr values are 0.00 - 0.01 %S which is well below the DNR’s defined acid sulfate soil
“action level” of 0.03 %S, and this indicates there is only negligible levels of oxidisable
sulphur, or potential acid sulfate soils (PASS). The measured total actual acidity (TAA)
values are all 0 mol. H+/t, which indicates that the sand samples are not actual acid
sulfate soils (AASS).

It is concluded: from the observations made during the field investigation drilling and
sampling, as well as from subsequent laboratory testing, that the amount of acid sulfate
soil material present in the sand profile at this location, should be described as negligible
to non-existent. Thus it is recommended that no treatment of soil material would be
required for soil excavated from this location.

 

Y SOIL SURVEYS ENGINEERING