the proviso that the remediating ions are peroxide free for example the remediating ions comprise ferrous ions peroxide free if the anode comprises an iron containing material the introduction of iron ions at an iron containing anode will dissolve the iron containing anode while the iron ions are adsorbed to a limited degree in the contaminated media ion migration will occur once an equilibrium is attained between adsorbed and dissolved iron ions the introduction of the ions in step s 3 comprises direct treatment such as chemical degradation by reductive dechlorination of contaminated material with ferrous ions for example ferrous ions in an aqueous solution alternatively the introduction of the ions in step s 3 comprises dissolution of ferrous ions that are provided by an interaction of iron bearing minerals with organic and inorganic reducing agents a further alternative for the introduction of the ions in step s 3 comprises dissolution of ferrous ions that result from iron metal corrosion another alternative of introduction of the ions in step s 3 within the scope of the invention comprises dissolution of ferrous ions that are formed by electrolytic processes at iron electrodes furthermore another alternative of the introduction of the ions in step s 3 comprises dissolution of ferrous ions produced.