Attachment 4 - Geotech Report · MCU23/0030

                                                                                       BH1 - 3.0-            BH1 - 3.25-      BH1 - 3.5-       BH1 - 3.75-
Client Sample ID                                                                       3.25M                 3.5M             3.75M            4.0M
Sample Matrix                                                                          Soil                  Soil             Soil             Soil
Eurofins Sample No.                                                                    B23-Ja0016301 B23-Ja0016302 B23-Ja0016303 B23-Ja0016304
Date Sampled                                                                           Apr 29, 2022          Apr 29, 2022     Apr 29, 2022     Apr 29, 2022
Test/Reference                                                 LOR           Unit
Extractable Sulfur
Sulfur - KCl Extractable                                      0.005          %S                 -                      -           0.007                -
HCl Extractable Sulfur                                        0.005          %S                 -                      -            N/A                 -
Retained Acidity (S-NAS)
Net Acid soluble sulfur (SNAS) NLM-4.1                        0.005         %S                  -                      -            N/A                 -
Net Acid soluble sulfur (s-SNAS) NLM-4.1S02                   0.005         %S                  -                      -            N/A                 -
Net Acid soluble sulfur (a-SNAS) NLM-4.1                        2         mol H+/t              -                      -            N/A                 -
HCl Extractable Sulfur Correction Factor                        1          factor               -                      -            2.0                 -
Acid Neutralising Capacity (ANCbt)
Acid Neutralising Capacity - (ANCbt) (NLM-5.2)                 0.01       % CaCO3               -                      -            N/A                 -
Acid Neutralising Capacity - (s-ANCbt) (NLM-5.2)S03            0.02         %S                  -                      -            N/A                 -
Acid Neutralising Capacity - (a-ANCbt) (NLM-5.2)                 2        mol H+/t              -                      -            N/A                 -
ANC Fineness Factor                                                        factor               -                      -            1.5                 -
Net Acidity (Including ANC)
CRS Suite - Net Acidity - NASSG (Including ANC)                0.02        %S                   -                      -           0.08                 -
CRS Suite - Net Acidity - NASSG (Including ANC)                 10        mol H+/t              -                      -            50                  -
CRS Suite - Liming Rate - NASSG (Including ANC)S01               1        kg CaCO3/t            -                      -            3.8                 -
Chromium Suite (SKCl) - NASSG (Excluding ANC)
<2mm Fraction                                                 0.005           g                 -                      -            120                 -
>2mm Fraction                                                 0.005           g                 -                      -          < 0.005               -
Analysed Material                                              0.1            %                 -                      -            100                 -
Extraneous Material                                            0.1            %                 -                      -           < 0.1                -


% Moisture                                                       1            %                 -                      -            20                  -



                                                                                       BH2 - 0.0-            BH2 - 0.25-      BH2 - 0.5-       BH2 - 0.75-
Client Sample ID                                                                       0.25M                 0.5M             0.75M            1.0M
Sample Matrix                                                                          Soil                  Soil             Soil             Soil
Eurofins Sample No.                                                                    B23-Ja0016305 B23-Ja0016306 B23-Ja0016307 B23-Ja0016308
Date Sampled                                                                           Apr 29, 2022          Apr 29, 2022     Apr 29, 2022     Apr 29, 2022
Test/Reference                                                 LOR           Unit
Acid Sulfate Soils Field pH Test
pH-F (Field pH test)*                                           0.1       pH Units             5.5                   5.6            5.8                5.8
pH-FOX (Field pH Peroxide test)*                                0.1       pH Units             2.7                   3.0            3.1                3.3
Reaction Ratings*S05                                             0             -               3.0                   3.0            3.0                3.0
Actual Acidity (NLM-3.2)
pH-KCL (NLM-3.1)                                               0.1        pH Units              -                      -            5.1                 -
Titratable Actual Acidity (NLM-3.2)                           0.003       % pyrite S            -                      -           0.013                -
Titratable Actual Acidity (NLM-3.2)                             2         mol H+/t              -                      -            8.1                 -
Potential Acidity - Chromium Reducible Sulfur
Chromium Reducible Sulfur (s-SCr) (NLM-2.1)S04                0.005        %S                   -                      -          < 0.005               -
Chromium Reducible Sulfur (a-SCr) (NLM-2.1)                     3         mol H+/t              -                      -            <3                  -
Extractable Sulfur
Sulfur - KCl Extractable                                      0.005          %S                 -                      -          < 0.005               -
HCl Extractable Sulfur                                        0.005          %S                 -                      -            N/A                 -




                                          Eurofins Environment Testing 1/21 Smallwood Place, Murarrie, QLD, Australia, 4172                      Page 4 of 17
  Date Reported: Jan 19, 2023                           ABN : 50 005 085 521 Telephone: +61 7 3902 4600                               Report Number: 955951-S