REFERENCE DOCUMENTS - RAL25/0004 (As Published)

                         ○    DES (now DESI), 2018, Monitoring and Sampling Manual: Environmental Protection (Water)
                              Policy. Brisbane: Department of Environment and Science Government.

        6.6.2.      DATA QUALITY INDICIES
                    Key indices for data quality are presented in Table 13.
                    Table 13: Key Data Quality Indices
                      Item                        Detail
                      Documentation               Completion of field sheets and laboratory chain of custody documentation.
                                                  Reporting using standard measurements and nomenclatures.
                      Completeness                Selection and field monitoring or laboratory analysis of contaminants of
                                                  environmental concern based upon site history information and field
                                                  observations.
                      Comparability               Consistency of field sampling and monitoring techniques and use of a
                                                  NATA certified laboratory utilising traceable USEPA and APHA methods, or
                                                  similar.
                      Representativeness          Samples collected using a systematic approach.
                      Precision                   Calculation of Relative Percentage Difference (RPD) for field duplicate sets
                                                  to assess reproducibility of data against criteria and allow comment on
                                                  validity.
                      Accuracy                    Data accuracy is achieved through minimising bias effects on samples
                                                  collected and analysed, such as from cross contamination, incorrect
                                                  preservation or laboratory techniques. Measures of accuracy include
                                                  following correct sampling and transport procedures, absence of detectable
                                                  contamination in field blanks, and use of laboratory quality control samples
                                                  such as surrogates.

        6.6.3.      FIELD PROCEDURES
                    SAMPLING
                    Sampling was completed in accordance with the procedures described and the SAQP.
                    DOCUMENTATION
                    Field QC included sample transportation under Chain of Custody procedures. Completed Chain of
                    Custody documentation and Sample Receipt Advice forms, certifying the condition of the samples upon
                    arrival at the contract laboratory are reported along with the appended certificates of laboratory analysis.
                    STORAGE AND TRANSPORT
                    Samples were collected into laboratory supplied containers appropriate for the matrix and the proposed
                    analysis and stored in ice-cooled and insulated containers. Sample integrity was maintained by using
                    sealed plastic/glass jars (soil samples) or plastic/glass bottles (water).

        6.6.4.      LABORATORY PROCEDURES
                    HOLDING TIMES
                    Sample extraction commenced within recommended holding times from date of collection.
                    LABORATORY QA/QC
                    Laboratory QA/QC included the following routine quality control procedures for every analytical run:


        125 Lot 105 SP118458 Cooroy DSI 12062024 Rev0                                                  Lot 105 SP118458, Cooroy, QLD, 4563
        12/06/2024                                                      51                          Detailed Site Contamination Investigation
Document Set ID: 23717062
Version: 0, Version Date: 01/01/1900