[Basic concept for the judgement of the results of dustfall measuring in the Alps (author's transl)]

At the time extensive measurements are made in the Austrian part of the Alps to find out the elevation of the fundamental load of dustfall according to the methode of BERGERHOFF. Thereby the authors had to solve the fundamental question to find a system for estimation. In Austria the results of measurements of dustfall were classified usually according to the "Technische Anleitung zur Reinhaltung der Luft 1964." It appeared that the introduction did not achieve the problem because of the special geografical, meteorological and economical data of the researched part of the Alps which at that time has about 30 000 km2. Similar applies to the new standards of the TAL 1974 and that recommendations of the "Deutscher Bäderverband" to estimate health resorts, recreation areas and mineral springs. Therefore a special model for estimating was developed which differentiate among the average of a year and the maximum of the average of a month, the general housing-areas, recreation areas and standards for industrial areas. The suggested limits are under the limits which are used today in Germany. The results of measurements of dustfall are discussed.