REFERENCE DOCUMENTS - RAL25/0004 (As Published)

     Page                       : 6 of 6
     Work Order                 : EB2415832
     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)
     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).
     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.
     Preparation Methods                                           Method                Matrix       Method Descriptions
     Hot Block Digest for metals in soils                           EN69                  SOIL        In house: Referenced to USEPA 200.2. Hot Block Acid Digestion 1.0g of sample is heated with Nitric and
     sediments and sludges                                                                            Hydrochloric acids, then cooled. Peroxide is added and samples heated and cooled again before being filtered
                                                                                                      and bulked to volume for analysis. Digest is appropriate for determination of selected metals in sludge,
                                                                                                      sediments, and soils. This method is compliant with NEPM Schedule B(3).
     Methanolic Extraction of Soils for Purge                      ORG16                  SOIL        In house: Referenced to USEPA SW 846 - 5030A. 5g of solid is shaken with surrogate and 10mL methanol prior
     and Trap                                                                                         to analysis by Purge and Trap - GC/MS.
     Tumbler Extraction of Solids                                  ORG17                  SOIL        In house: Mechanical agitation (tumbler). 10g of sample, Na2SO4 and surrogate are extracted with 30mL 1:1
                                                                                                      DCM/Acetone by end over end tumble. The solvent is decanted, dehydrated and concentrated (by KD) to the
                                                                                                      desired volume for analysis.




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