Determination of cleaning intervals
Cleaning – Disposal of waste material
Since June 1, 2005, the dumping of biodegradable waste - including the waste material from sewer cleaning procedures - without a prior thermal or appropriate mechanical-biological treatment is only permitted, insofar as the organic portion of the dry residue (measured as loss due to heating) does not exceed the values given:
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3 % by weight: Geological barrier, Landfill class 0 and I
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5 % by weight: Landfill class II
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10 % by weight: Landfill class III