In the course of the remediation of a PAH-contaminated site in Hamburg-Veringstraße (1) we evaluated the use of two different remediation strategies: 1. Stimulation of PAH degradation by activation of the autochthonous microflora. 2. Stimulation of the PAH degradation by supplementation of the soil with either the white rot fungus Pleurotus ostreatus (1), straw or compost (2).