STATISTICAL ANALYSIS OF POLLUTION IN STORMWATER INFILTRATION BASINS

BARDIN J. P. / BARRAUD S. / DECHESNE M. / et al. - ARTICLE DE PERIODIQUE - 2005

In order to characterize soil pollution in stormwater infiltration basins, four basins of the Lyon area were selected and sampled. 66 soil samples were collected and analyzed (pH, cationic exchange capacity,...). Data was explored in a classic way (soil profiles) and using multivariate analysis techniques. Two methods were applied: Principal Component Analysis (PCA) and Cluster Analysis (CA). Main results are presented in this paper. It shows for example that pollutant concentrations decrease rapidly with depth while pH and grain size increase.