Acid Sulfate Management Plan · MCU16/0103

                                                                  MATRIX SPIKE DUPLICATES                                                                   BE018333 R0



   Matrix spike duplicates are calculated as Relative Percent Difference (RPD) using the formula: RPD = | OriginalResult - ReplicateResult | x 100 / Mean

   The original result is the analyte concentration of the matrix spike. The Duplicate result is the analyte concentration of the matrix spike duplicate.

   The RPD is evaluated against the Maximum Allowable Difference (MAD) criteria and can be graphically represented by a curve calculated from the Statistical Detection Limit
   (SDL) and Limiting Repeatability (LR) using the formula: MAD = 100 x SDL / Mean + LR

   Where the Maximum Allowable Difference evaluates to a number larger than 200 it is displayed as 200.

   RPD is shown in Green when within suggested criteria or Red with an appended reason identifer when outside suggested criteria. Refer to the footnotes section at the end of
   this report for failure reasons.




                                                                       No matrix spike duplicates were required for this job.




21/10/2016                                                                                                                                                              Page 8 of 9