In Table 4 a summary of results and a ranking of the toxicity of the samples in the different tests is presented. The sample St1 from the first sediment trap showed toxicity in all test methods except the umu-test and the intact sediment test with A. fischeri. It was also shown to be the most toxic sample in the test with H. incongruens and contained the highest level of dioxins. The samples from pond 10 and the well showed no toxicity and no dioxin compounds could be detected in P10.