… over 90 over 50 over 240 over 100 over 100 poor 55-90 31-50 145-240 61-100 61-100 moderate 28-54 16-30 73-144 31-60 31-60 good 10-27 6-15 24-72 11-30 11-30 very good 0-9 0-5 0-24 0-10 0-10 * Hourly means in µg/m³ These threshold values were derived based on current health studies and taking into account the recommendations …

… Board (FBU) is the expert committee according to section 25 of the German Federal Soil Protection and Contaminated Sites Ordinance (Bundes-Bodenschutz- und … Advisory Board (FBU) The members of the FBU are recognised experts from federal and state institutions as well as from laboratories and engineering … with Section 25 BBodSchV. With the publication of the equivalence in the Federal Gazette by the Federal Ministry for the Environment, Nature Conservation, …