[Sanitizing contaminated soil and groundwater pipes by microbiological and physico-chemical methods].

The contribution reports on two contamination cases, i.e., a waterwork "Durlacher Wald" and an industrial plant "Oberrheingraben" which were remedied using biological and physico-chemical methods. Furthermore, it deals with the laboratory investigations of the degradation of hydrocarbons, and also discusses briefly the advantages and problems of the microbiological remediation techniques.