RESPONSE TO FURTHER ADVICE -Geotechnical Report · MCU25/0054

Page                    : 3 of 3
Work Order              : EB2510288
Client                  : PTG Consulting Pty Ltd
Project                 : PTG/02023 William Street Noosaville

Method Blank (MB) and Laboratory Control Sample (LCS) Report
The quality control term Method / Laboratory Blank refers to an analyte free matrix to which all reagents are added in the same volumes or proportions as used in standard sample preparation. The purpose of this QC
parameter is to monitor potential laboratory contamination. The quality control term Laboratory Control Sample (LCS) refers to a certified reference material, or a known interference free matrix spiked with target
analytes. The purpose of this QC parameter is to monitor method precision and accuracy independent of sample matrix. Dynamic Recovery Limits are based on statistical evaluation of processed LCS.

l No Method Blank (MB) or Laboratory Control Spike (LCS) Results are required to be reported.



Matrix Spike (MS) Report
The quality control term Matrix Spike (MS) refers to an intralaboratory split sample spiked with a representative set of target analytes. The purpose of this QC parameter is to monitor potential matrix effects on
analyte recoveries. Static Recovery Limits as per laboratory Data Quality Objectives (DQOs). Ideal recovery ranges stated may be waived in the event of sample matrix interference.
l No Matrix Spike (MS) or Matrix Spike Duplicate (MSD) Results are required to be reported.