Article 2
For the purposes of this Directive: (a)'sludge' means: (i)residual sludge from sewage plants treating domestic or urban waste waters and from other sewage plants treating waste waters of a composition similar to domestic and urban waste waters; (ii)residual sludge from septic tanks and other similar installations for the treatment of sewage; (iii)residual sludge from sewage plants other than those referred to in (i) and (ii); (b)'treated sludge' means: sludge which has undergone biological, chemical or heat treatment, long-term storage or any other appropriate process so as significantly to reduce its fermentability and the health hazards resulting from its use; (c)'agriculture' means: the growing of all types of commercial food crops, including for stock-rearing purposes; (d)'use' means: the spreading of sludge on the soil or any other application of sludge on and in the soil.