REFERENCE DOCUMENTS - RAL25/0004 (As Published)

     Page                          : 2 of 10
     Work Order                    : EB2306000
     Client                        : ENVIRONMENTAL ADVISORS
     Project                       : 125 NSC LAKE McDONALD DVE, COOROY

     Outliers : Quality Control Samples
     Duplicates, Method Blanks, Laboratory Control Samples and Matrix Spikes
      Matrix: SOIL
       Compound Group Name                                Laboratory Sample ID   Client Sample ID      Analyte                               CAS Number        Data            Limits      Comment
     Duplicate (DUP) RPDs
      EG005(ED093)T: Total Metals by ICP-AES              EB2305781--001         Anonymous             Iron                                  7439-89-6        121 %          0% - 20%      RPD exceeds LOR based limits
       EG005(ED093)T: Total Metals by ICP-AES             EB2306000--028         TP11-0.1              Iron                                  7439-89-6       29.4 %          0% - 20%      RPD exceeds LOR based limits
       EG005(ED093)T: Total Metals by ICP-AES             EB2306000--028         TP11-0.1              Lead                                  7439-92-1       23.9 %          0% - 20%      RPD exceeds LOR based limits
       EG005(ED093)T: Total Metals by ICP-AES             EB2305781--017         Anonymous             Lead                                  7439-92-1       23.2 %          0% - 20%      RPD exceeds LOR based limits
     Matrix Spike (MS) Recoveries
      EG005(ED093)T: Total Metals by ICP-AES              EB2305781--003         Anonymous             Lead                                  7439-92-1        155 %          70.0-130%     Recovery greater than upper data
                                                                                                                                                                                           quality objective

     Outliers : Analysis Holding Time Compliance
     Matrix: SOIL
     Method                                                                                                                                       Extraction / Preparation                                      Analysis
      Container / Client Sample ID(s)                                                                                               Date extracted    Due for extraction       Days          Date analysed     Due for analysis    Days
                                                                                                                                                                              overdue                                             overdue
     EA001: pH in soil using 0.01M CaCl extract
      Soil Glass Jar - Unpreserved
       TP4-1.0                                                                                                                      06-Mar-2023         03-Mar-2023               3               ----               ----            ----

     Analysis Holding Time Compliance
     If samples are identified below as having been analysed or extracted outside of recommended holding times, this should be taken into consideration when interpreting results.
     This report summarizes extraction / preparation and analysis times and compares each with ALS recommended holding times (referencing USEPA SW 846, APHA, AS and NEPM) based on the sample container
     provided. Dates reported represent first date of extraction or analysis and preclude subsequent dilutions and reruns. A listing of breaches (if any) is provided herein.
     Holding time for leachate methods (e.g. TCLP) vary according to the analytes reported. Assessment compares the leach date with the shortest analyte holding time for the equivalent soil method. These are:                     organics
     14 days, mercury 28 days & other metals 180 days. A recorded breach does not guarantee a breach for all non-volatile parameters.
     Holding times for VOC in soils vary according to analytes of interest. Vinyl Chloride and Styrene holding time is 7 days; others 14 days.       A recorded breach does not guarantee a breach for all VOC analytes and
     should be verified in case the reported breach is a false positive or Vinyl Chloride and Styrene are not key analytes of interest/concern.
     Matrix: SOIL                                                                                                                                                              Evaluation: û = Holding time breach ; ü = Within holding time.
     Method                                                                                                          Sample Date                  Extraction / Preparation                                      Analysis
      Container / Client Sample ID(s)                                                                                               Date extracted    Due for extraction      Evaluation     Date analysed     Due for analysis   Evaluation

      EA001: pH in soil using 0.01M CaCl extract
     Soil Glass Jar - Unpreserved (EA001)
                                                                                                                                                        03-Mar-2023                                            06-Mar-2023
        TP4-1.0                                                                                                     24-Feb-2023     06-Mar-2023                                  û           06-Mar-2023                             ü
      EA002: pH 1:5 (Soils)
     Soil Glass Jar - Unpreserved (EA002)
                                                                                                                                                        03-Mar-2023                                            03-Mar-2023
        TP4-1.0                                                                                                     24-Feb-2023     03-Mar-2023                                  ü           03-Mar-2023                             ü
      EA010: Conductivity (1:5)
     Soil Glass Jar - Unpreserved (EA010)
                                                                                                                                                        03-Mar-2023                                            31-Mar-2023
        TP4-1.0                                                                                                     24-Feb-2023     03-Mar-2023                                  ü           03-Mar-2023                             ü

Document Set ID: 23717062
Version: 0, Version Date: 01/01/1900