A chromate-contaminated site in southern Switzerland - Part 1: Site characterization and the use of Cr isotopes to delineate fate and transport

► Determination of present Cr(VI) inventory of a Cr(VI) contaminated site. ► Comparison of aq. Cr(VI) concentrations with solubility of identified Cr(VI) minerals. ► Demonstration of naturally occurring Cr(VI) reduction with Cr isotope measurements. ► Quantification of current extent of naturally occurring Cr(VI) reduction. ► Presentation of first δ53Cr data of subsoil samples of a Cr(VI) contaminated site.