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Acid Sulfate Soil Test Results v1.2
© January 2024 Douglas Partners Pty Ltd
Summary of results - acid sulfate soils
Project No: 229073.00
Project Name: Proposed Residence
Location: 13 Mermaid Quay, Noosaville
Sample Information Screening Test Results Laboratory Analysis Results (Acid Base Accounting)
Depth from (m)
Reduced level
Corroborated
Depth to (m)
Location ID
Net Acidity
pH change
(pH units)
(pH units)
(pH units)
(pH units)
Reaction
Strength
Adopted
Texture
ANCBT
(AHD)
pHFOX
pHKCl
(Y/N)
ANC
(%S)
(%S)
(%S)
(%S)
(%S)
(%S)
(%S)
SNAS
TAA
pHF
SHCl
SKCl
Scr
Sample Description
Coarse texture: sands to loamy sands and peats 0.03
Assessment Criteria (pH units) <4 <3 - 1.0 Action Criteria (%S) Medium texture: clayey sand to light clays 0.06a/0.03b
Fine texture: light medium to heavy clays 0.1a/0.03b
1 0.00 0.25 2.00 to 1.75 FILL/Sandy CLAY - dark brown C 5.8 3.1 4 2.7
1 0.25 0.50 1.75 to 1.50 FILL/SAND - pale brown grey C 6.5 3.3 3 3.2
1 0.50 0.75 1.50 to 1.25 FILL/SAND - pale brown grey C 6.0 3.3 3 2.7
1 0.75 1.00 1.25 to 1.00 FILL/SAND - pale brown grey C 6.4 3.5 3 2.9 6.7 <0.005 0.007 <0.003 0.110 Y <0.02
1 1.00 1.25 1.00 to 0.75 FILL/SAND - pale brown grey C 5.6 3.4 3 2.2
1 1.25 1.50 0.75 to 0.50 SAND - grey white C 6.1 3.7 3 2.4
1 1.50 1.75 0.50 to 0.25 SAND - grey white C 5.8 3.6 3 2.2
1 1.75 2.00 0.25 to 0.00 SAND - grey white C 6.2 3.7 3 2.5
1 2.00 2.25 0.00 to -0.25 SAND - grey white C 6.6 3.2 3 3.4 5.6 <0.005 <0.005 0.005 <0.02
1 2.25 2.50 -0.25 to -0.50 SAND - grey white C 6.4 3.5 2 2.9
1 2.50 2.75 -0.50 to -0.75 SAND - grey white C 6.0 3.1 3 2.9
1 2.75 3.00 -0.75 to -1.00 SAND - grey white C 5.7 3.4 2 2.3
1 3.00 3.25 -1.00 to -1.25 SAND - grey white C 5.9 3.4 2 2.5
1 3.25 3.50 -1.25 to -1.50 SAND - grey white C 4.2 2.5 4 1.7 5.3 0.012 0.049 0.009 0.060
1 3.50 3.75 -1.50 to -1.75 SAND - dark grey C 4.3 2.6 4 1.7
1 3.75 4.00 -1.75 to -2.00 SAND - dark grey C 4.0 2.5 4 1.5
1 4.00 4.25 -2.00 to -2.25 SAND - dark grey C 4.2 2.5 4 1.7
1 4.25 4.50 -2.25 to -2.50 SAND - grey white C 3.9 2.4 4 1.5 4.6 0.027 0.051 0.024 0.080
1 4.50 4.75 -2.50 to -2.75 SAND - grey white C 4.1 2.4 4 1.7
1 4.75 5.00 -2.75 to -3.00 SAND - grey white C 3.9 2.5 4 1.4
1 5.00 5.25 -3.00 to -3.25 SAND - grey white C 3.9 2.4 4 1.5 4.6 0.019 0.055 0.018 0.070
1 5.25 5.50 -3.25 to -3.50 SAND - grey white C 4.2 2.5 4 1.7
1 5.50 5.75 -3.50 to -3.75 SAND - grey white C 7.6 2.4 4 5.2
1 5.75 6.00 -3.75 to -4.00 SAND - grey white C 8.3 2.7 4 5.6
2 0.00 0.25 0.90 to 0.65 FILL/Sandy CLAY - dark brown C 6.7 3.5 3 3.2
2 0.25 0.50 0.65 to 0.40 FILL/Clayey SAND - grey streaked orange C 6.7 4.0 2 2.7
2 0.50 0.75 0.40 to 0.15 FILL/Clayey SAND - grey streaked orange C 6.3 3.3 2 3.0
2 0.75 1.00 0.15 to -0.10 FILL/Clayey SAND - grey streaked orange C 5.9 2.7 2 3.2 5.5 0.006 0.025 0.007 0.030
2 1.00 1.25 -0.10 to -0.35 SAND - grey white C 5.8 3.4 4 2.4
2 1.25 1.50 -0.35 to -0.60 SAND - grey white C 6.9 3.3 3 3.6
Notes:
Adopted texutre - C = coarse, M = medium, F = fine
pHF - Soil pH in water
pHFOX - Soil pH in peroxide
Reaction strength:1 = No reaction to slight. 2.0 = Moderate reaction. 3.0 = Strong reaction with persistent froth. 4.0 = Extreme reaction.
pH change = pHF - pHFOX
pHKCL - KCl extractable pH
SKCl - KCl extractable sulfur
SHCl - HCl extractable sulfur
Scr - potential sulfidic acidity
TAA - titratable actual acidity (reported if pHKCL<6.5)
SNAS – retained acidity (reported if pHkCl < 4.5)
ANCBT – acid neutralising capacity (reported if pHKCl ≥ 6.5)
NT - Not tested
Blue depths indicate where samples have been collected at or below the groundwater table
Bold results are indicators of ASS conditions, noting:
- Assessment criteria are considered a reasonable initial screening for AASS or PASS
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