Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:1850:p80
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 1850 (pt 80/117)
Character Range: 572623–575677

situation.

The following techniques may be useful to clearly display results:
    * a separate site plan for each elevated analyte, which displays sample locations, sample identification numbers and depths, and shows different concentration ranges in different colours
    * a separate site plan displaying analyte results (including locations, identification numbers and depths) for each elevated analyte, highlighting any exceedences of the guidelines by concentration range.
    * a site plan displaying all analytes tested at each depth at each location and highlighting all results above environmental investigation thresholds in one colour and all results above health investigation thresholds in another colour (same colour regardless of analyte)
    * a site plan displaying all results at each depth at each location in a specific colour for each analyte
    * concentration contours, for each specific sample depth, to show plumes from a point source. Care should be taken when using this technique because inferred areas may be misleading if only a small number of sample locations are used
    * cross-sections (noting vertical exaggeration) to illustrate the distribution and concentrations of contaminants and to display complex local geology
    * statistical diagrams such as histograms and side-by-side boxplots.
It may be necessary to provide separate site plans for various depth ranges if plots are cluttered.
A particular technique will not be suitable in every situation. For example, choosing the third point above would not be useful if the majority of sampling results were above investigation levels. In this situation, a technique which showed concentration ranges in different colours would be more applicable.

To assist report assessors to review a site, a blank site plan which shows only sample locations, identification numbers and depths should also be provided. Examples of appropriate data presentation on site drawings are shown in Appendix D.

A separate site plan for validation samples should always be provided which clearly displays locations, depths and results of all relevant samples, including samples from Stage 1 and 2 reports.

14.6          Presentation of tabulated laboratory analytical results
Summary tables should show at least the essential details of sample locations and depths against the laboratory results. Results exceeding investigation threshold levels should be highlighted. For ease of reference, the addition of information such as date sampled, date received at laboratory, date analysed, and soil profile data to the summary table can expedite assessments by reducing cross-referencing. Examples are shown in Table 10 to Table 14.

Copies of the analytical results as originally received from the laboratory should be included as an appendix to the report together with details of relevant QA protocols, and QC results and chain-of-custody documentation. Further information is provided in Appendix C.

14.7          Presentation of bore logs
Bore logs and test pit logs are necessary