REFERENCE DOCUMENTS - RAL25/0004 (As Published)

     Page                       : 5 of 6
     Work Order                 : EB2307800
     Client                     : ENVIRONMENTAL ADVISORS
     Project                    : 125 NSC LAKE McDONALD DVE, COOROY

     Brief Method Summaries
     The analytical procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the US EPA, APHA, AS and NEPM. In house
     developed procedures are employed in the absence of documented standards or by client request. The following report provides brief descriptions of the analytical procedures employed for results reported in the
     Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.
     Analytical Methods                                            Method                Matrix       Method Descriptions
     Moisture Content                                              EA055                  SOIL        In house: A gravimetric procedure based on weight loss over a 12 hour drying period at 105-110 degrees C.
                                                                                                      This method is compliant with NEPM Schedule B(3).
     Leachable Metals by ICPAES                                   EG005C                  SOIL        In house: referenced to APHA 3120; USEPA SW 846 - 6010: The ICPAES technique ionises leachate sample
                                                                                                      atoms emitting a characteristic spectrum. This spectrum is then compared against matrix matched standards for
                                                                                                      quantification. This method is compliant with NEPM Schedule B(3).
     Total Metals by ICP-AES                                      EG005T                  SOIL        In house: Referenced to APHA 3120; USEPA SW 846 - 6010. Metals are determined following an appropriate
                                                                                                      acid digestion of the soil. The ICPAES technique ionises samples in a plasma, emitting a characteristic
                                                                                                      spectrum based on metals present. Intensities at selected wavelengths are compared against those of matrix
                                                                                                      matched standards. This method is compliant with NEPM Schedule B(3)
     Leachable Mercury by FIMS                                    EG035C                  SOIL        In house: Referenced to APHA 3112 Hg - B (Flow-injection (SnCl2)(Cold Vapour generation) AAS) FIM-AAS is an
                                                                                                      automated flameless atomic absorption technique. A bromate/bromide reagent is used to oxidise any organic
                                                                                                      mercury compounds in the TCLP solution. The ionic mercury is reduced online to atomic mercury vapour by
                                                                                                      SnCl2 which is then purged into a heated quartz cell. Quantification is by comparing absorbance against a
                                                                                                      calibration curve. This method is compliant with NEPM Schedule B(3).
     Hexavalent Chromium by Alkaline                              EG048G                  SOIL        In house: Referenced to USEPA SW846, Method 3060. Hexavalent chromium is extracted by alkaline digestion.
     Digestion and DA Finish                                                                          The digest is determined by photometrically by automatic discrete analyser, following pH adjustment. The
                                                                                                      instrument uses colour development using dephenylcarbazide. Each run of samples is measured against a
                                                                                                      five-point calibration curve. This method is compliant with NEPM Schedule B(3)
     Trivalent Chromium by Alkaline                             EG049G-Alk                SOIL        In house: Referenced to APHA 3500 Cr-A&B & 3120 and USEPA USEPA SW846, Method 3060. The difference
     Digestion and DA Finish                                                                          between Total and Hexavalent Chromium. The total Chromium is determined by ICPAES and the Hexavalent
                                                                                                      chromium is extracted by alkaline digestion and the digest is determined by photometrically by automatic
                                                                                                      discrete analyser. The instrument uses colour development using dephenylcarbazide. This method is compliant
                                                                                                      with NEPM Schedule B(3)
     Preparation Methods                                           Method                Matrix       Method Descriptions
     Alkaline digestion for Hexavalent                           EG048PR                  SOIL        In house: Referenced to USEPA SW846, Method 3060A.
     Chromium
     Digestion for Total Recoverable Metals                        EN25C                  SOIL        In house: Referenced to USEPA SW846-3005. Method 3005 is a Nitric/Hydrochloric acid digestion procedure
     in TCLP Leachate                                                                                 used to prepare surface and ground water samples for analysis by ICPAES or ICPMS. This method is compliant
                                                                                                      with NEPM Schedule B(3)
     TCLP for Non & Semivolatile Analytes -                       EN33a-G                 SOIL        In house QWI-EN/33 referenced to USEPA SW846-1311: The TCLP procedure is designed to determine the
     Glass Leaching Vessel                                                                            mobility of both organic and inorganic analytes present in wastes. The standard TCLP leach is for non-volatile
                                                                                                      and Semivolatile test parameters.
     ASLP for Non & Semivolatile Analytes -                       EN60a-G                 SOIL        In house QWI-EN/60 referenced to AS4439.3 Preparation of Leachates
     Glass Leaching Vessel



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