Reference Document - OPW23 0189

                                                                                              Acid Sulfate Soil Report
CLIENT:                                                     DD Sunnyside CD Sunnyside Pty Ltd                  PROJECT NUMBER:                                                         PG-10899
ADDRESS:                                                 30 Mossman Court, Noosa Heads                         REPORT NUMBER:                                         23-537                Rev. No.0
PROJECT NAME:                                                 Proposed Residence                               REPORT DATE:                                                            13.10.23


                                                                                                          SAMPLE LOCATION
                                         SAMPLING METHOD:                                                                                                         Disturbed
                                            SAMPLED BY:                                                                                                         Pacific Geotech
                                           DATE SAMPLED:                                                                                                            6.10.23
                                           DATE RECEIVED:                                                                                                           9.10.23
                                            DATE TESTED:                                                                                                            9.10.23
                                   PREPERATION/ANALYSIS METHOD:                                                                                                 ENV01/ENV02


Lab Ref Number                                                             E23-537-1            E23-537-2       E23-537-3            E23-537-4
Sample Description                            Unit             LOR           BH01                 BH01            BH01                 BH01
Depth (m)                                                                     1.0                  2.0             3.0                  4.0
pHKCL                                        pH Unit            0.1              6.4                     6.6          5.3                 5.1
Chromium Reducible Sulfur                    %w/w S           0.005            <0.005                0.017          0.037                0.056
Chromium Reducible Sulfur                   mol H+/t             3                <3                     11           23                   35
TAA pH to 6.5                               mol H+/t             2                <2                     <2           <2                   <2
s-TAA pH to 6.5                              %w/w S           0.005            <0.005               <0.005          <0.005              <0.005
KCl Ext S                                    %w/w S           0.005             0.006                0.005          0.006                0.006
HCl Ext S                                    %w/w S           0.005             0.012                0.010          0.015                0.012
Retained Acidity (SNAS)                      %w/w S           0.005              N/R                     N/R         N/R                  N/R
Retained Acidity (SNAS)                     mol H+/t             3               N/R                     N/R         N/R                  N/R
ANC                                         %CaCO3              0.1              0.1                     0.1          0.1                 0.1
ANC                                         mol H+/t             5                12                     13           13                   11
Net Acidity                                 mol H+/t             5                <5                     11           23                   35
Net Acidity                                  %w/w S           0.005            <0.005                0.018          0.037                0.056
Net Acidity - ANC                           mol H+/t             1                <1                     <1           10                   24
Liming Rate                                kg CaCO3/t            1                <1                      1            2                    3
Liming Rate - ANC                          kg CaCO3/t            1                <1                     <1            1                    2

Liming rate only includes ANC when its effectiveness has been corroborated by simulative oxidation procedures such as incubation. Unless corroborated, the results for ANC analyses should not be used when determining Net Acidity for
for comparison with action criteria. The Liming Rate-ANC calculation is only inluded when the amount of acid neutralising present in the soil is capable of buffering the soil at pH 6.5 or above. A liming safety factror of 1.5 has been applied.
Results apply to samples that have been dried at 85±5oC. LOR denotes Limit of Reporting. N/R denotes Not Required. The results in this report pertain only to the samples as received. This document shall not be reproduced except in full.
Method uncertainty data is available at www.pacgeo,com,au/safety-and -quality-assurance. This report supercedes anty previous report(s) isssued with this reference number.
Pacific Geotech accepts no responsibilty for the collection and transport of samples submitted by external parties.




                                               Accredited for Compliance with ISO/IEC 17025 - Testing                              Approved Signatory

                                                     Pacific Geotech Pty Ltd - Accreditation No. 21130
                                                                                                                                       Daryl Surkitt
                                                         Gold Coast Laboratory - Site No. 25487                              Environmental Laboratory Manager


Form ER004.1




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