The Contaminated Land Module is specifically designed for the contaminated land industry. It provides visualisation of location and chemical data via a simple GIS and data-grid structure.

This module allows initial screening of chemical data against established environmental assessment levels such as EQS, SGV etc. Samples that fail this screening are flagged for further analysis.

On selection of an assessment level, the chemical and reporting unit data are filtered, sorted and displayed in a data grid and plotted on a GIS map to provide the initial analysis. The module allows multiple maps and data-grids to be displayed side-by-side enabling easy comparison of concentrations of different chemicals.

The significance of individual data points can be highlighted by choosing to graduate the symbol size according to the chemical concentration and/or changing the colour to indicate points that exceed the specified environmental assessment level. Upon the selection of a data point, an information window detailing all information relative to that location (Eastings, Northings, chemical concentrations etc) is displayed.

The module also provides statistical analysis as specified by the Environment Agency of England and Wales CLEA 2002 methodology. Contaminated Land Report 7 (CLR7) requires the use of statistical techniques to determine whether the samples are representative of the site as a whole. These tests, present in Appendix A of CLR7, are the ‘Mean Value Test’ and ‘Max Value Test’.

Both tests can be applied iteratively to determine instantly, which samples cause the population to fail the Mean Value Test and which are identified as outliers by the Max Value Test.

The user can specify percentile confidence levels for either of the tests. The analyses then can be applied across the entire site or just those locations selected by the user.

Locations identified as outliers, or as causing the population to fail the Mean Value Test, are displayed on the GIS plan with specific symbology. A customisable MS Word report is produced detailing the statistical values produced by the application. This includes a map (an export of the GIS plan) displaying the appropriate, test related symbology.

The system is supplied with comprehensive help files and tutorials and user support for the system is free.

Features