REFERENCE DOCUMENTS - RAL25/0004 (As Published)

     Page                    : 22 of 22
     Work Order              : EB2406372
     Client                  : ENVIRONMENTAL ADVISORS
     Project                 : 125 NSC LAKE McDONALD DVE, COOROY

     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.
     QuECheRS Extraction of Solids                     ORG71       SOIL     In house: Sequential extractions with Acetonitrile/Methanol by shaking. Extraction efficiency aided by the addition
                                                                            of salts under acidic conditions. Where relevant, interferences from co-extracted organics are removed with
                                                                            dispersive clean-up media (dSPE). The extract is either diluted or concentrated and exchanged into the
                                                                            analytical solvent.




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