20 Years ago ELOGplan (formerly BÜCHL Consult) started a cooperation with DEKRA Certifacation Company in the new field of certification of companies in the recycling and waste management business. One of the main reason for the long year collaboration was the very deep understanding of waste management business as well as the ELOGplan knowhow in specific legal matters, which had been changing quickly over the years. These collaboration was based on personal qualifications of the auditor. Because of focusing ELOGplan GmbH in planning and consulting, auditing activities will be reduced.