REFERENCE DOCUMENTS - RAL25/0004 (As Published)

     Page                       : 21 of 22
     Work Order                 : EB2406372
     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).
     Asbestos Identification in Soils                              EA200                  SOIL        AS 4964 Method for the qualitative identification of asbestos in bulk samples Analysis by Polarised Light
                                                                                                      Microscopy including dispersion staining
     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)
     Total Mercury by FIMS                                        EG035T                  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. Mercury in solids are determined following an appropriate
                                                                                                      acid digestion. 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)
     Polychlorinated Biphenyls (PCB)                               EP066                  SOIL        In house: Referenced to USEPA SW 846 - 8270 Extracts are analysed by Capillary GC/MS and quantification is
                                                                                                      by comparison against an established 5 point calibration curve. This method is compliant with NEPM Schedule
                                                                                                      B(3).
     Pesticides by GCMS                                            EP068                  SOIL        In house: Referenced to USEPA SW 846 - 8270 Extracts are analysed by Capillary GC/MS and quantification is by
                                                                                                      comparison against an established 5 point calibration curve. This technique is compliant with NEPM Schedule
                                                                                                      B(3).
     TRH - Semivolatile Fraction                                   EP071                  SOIL        In house: Referenced to USEPA SW 846 - 8015 Sample extracts are analysed by Capillary GC/FID and
                                                                                                      quantified against alkane standards over the range C10 - C40. Compliant with NEPM Schedule B(3).
     Semivolatile Organic Compounds                                EP075                  SOIL        In house: Referenced to USEPA SW 846 - 8270 Extracts are analysed by Capillary GC/MS and quantification is
                                                                                                      by comparison against an established 5 point calibration curve. This technique is compliant with NEPM
                                                                                                      Schedule B(3).
     PAH/Phenols (SIM)                                          EP075(SIM)                SOIL        In house: Referenced to USEPA SW 846 - 8270. Extracts are analysed by Capillary GC/MS in Selective Ion Mode
                                                                                                      (SIM) and quantification is by comparison against an established 5 point calibration curve. This method is
                                                                                                      compliant with NEPM Schedule B(3)
     TRH Volatiles/BTEX                                            EP080                  SOIL        In house: Referenced to USEPA SW 846 - 8260. Extracts are analysed by Purge and Trap, Capillary GC/MS.
                                                                                                      Quantification is by comparison against an established 5 point calibration curve. Compliant with NEPM
                                                                                                      Schedule B(3) amended.
     Per- and Polyfluoroalkyl Substances                          EP231X                  SOIL        In-house: Analysis of soils by solvent extraction followed by LC-Electrospray-MS-MS, Negative Mode using MRM
     (PFAS) by LCMSMS                                                                                 using internal standard quantitation. Isotopically labelled analogues of target analytes used as internal
                                                                                                      standards and surrogates are added to a portion of soil which is then extracted with MTBE and an ion pairing
                                                                                                      reagent. A portion of extract is exchanged into the analytical solvent mixture, combined with an equal volume
                                                                                                      reagent water and filtered for analysis. Method procedures and data quality objectives conform to US DoD QSM
                                                                                                      5.3, table B-15 requirements.

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