The standard applies to activities of demolition, refurbishing, maintenance and servicing of building structures and building services, where contaminants are involved. It applies to the removal, coating and separation of contaminants and the consignment and handover of the waste generated to disposal. The guideline describes the essential aspects of the decontamination procedure from the census up to the disposal. Recommendations are given regarding required contractual agreements, which supplement those given in the VOB (Ordinance on Orders and Contracts in Civil Engineering).