Attachment 4 - Geotech Report · MCU23/0030

                                                                                       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
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                   -                      -          < 0.02                   -
CRS Suite - Net Acidity - NASSG (Including ANC)                 10        mol H+/t              -                      -           < 10                    -
CRS Suite - Liming Rate - NASSG (Including ANC)S01               1        kg CaCO3/t            -                      -           <1                      -
Chromium Suite (SKCl) - NASSG (Excluding ANC)
<2mm Fraction                                                 0.005           g                 -                      -            88                     -
>2mm Fraction                                                 0.005           g                 -                      -            1.2                    -
Analysed Material                                              0.1            %                 -                      -            99                     -
Extraneous Material                                            0.1            %                 -                      -            1.3                    -


% Moisture                                                       1            %                 -                      -            2.4                    -



                                                                                       BH2 - 1.0-            BH2 - 1.25-      BH2 - 1.5-          BH2 - 1.75-
Client Sample ID                                                                       1.25M                 1.5M             1.75M               2.0M
Sample Matrix                                                                          Soil                  Soil             Soil                Soil
Eurofins Sample No.                                                                    B23-Ja0016309 B23-Ja0016310 B23-Ja0016311 B23-Ja0016312
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             5.8                   6.1            6.3                   6.2
pH-FOX (Field pH Peroxide test)*                                0.1       pH Units             3.2                   3.9            3.9                   3.9
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              -                    5.5             -                     -
Titratable Actual Acidity (NLM-3.2)                           0.003       % pyrite S            -                   0.007            -                     -
Titratable Actual Acidity (NLM-3.2)                             2         mol H+/t              -                    4.4             -                     -
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              -                    3.3             -                     -
Extractable Sulfur
Sulfur - KCl Extractable                                      0.005          %S                 -                  < 0.005           -                     -
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             -                     -




                                          Eurofins Environment Testing 1/21 Smallwood Place, Murarrie, QLD, Australia, 4172                         Page 5 of 17
 Date Reported: Jan 19, 2023                            ABN : 50 005 085 521 Telephone: +61 7 3902 4600                                  Report Number: 955951-S