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COMMISSION NOTICE Assessment of plans and projects in relation to Natura 2000 sites – Methodological guidance on the provisions of Article 6(3) and (4) of the Habitats Directive 92/43/EEC · European Union

Plan or project/ | National Road B 252/B 62; 17,56 km of new road to bypass the municipalities Münchhausen, Wetter and Lahntal (Hesse). North-south connection between the regions Paderborn-Korbach and Marburg-Gießen. The National Road B 62 links Biedenkopf via Cölbe to the long-distance axes Gießen-Marburg-Kassel. The new alignment entails resizing and relocation of public infrastructure, such as communal roads, energy grids, a railway and a gas pipeline. Natura 2000 site affected | The scope of the appropriate assessment included several Natura 2000 sites. The conclusions were: Site DE 5017-305 ‘Lahnhänge zwischen Biedenkopf und Marburg’: not adversely affected by the project. Site DE 5018-401 ‘Burgwald’: positively affected by the project because the project will be further away from the site and will reduce most of the traffic load of the existing National Road B 252. Site DE 5118-302 ‘Obere Lahn und Wetschaft mit Nebengewässern’: there will be significant impacts on this site. Impact | The route alignment of the National Road B 252/B 62 intersects the Natura 2000 network at three locations. The direct pressures are habitat loss and habitat degradation; there are barrier effects and nitrogen deposition that have general effects on habitats and species through habitat disturbance and degradation. The assets subject to significant consequences out of these impacts are: — Habitats Directive Annex I habitat types — 91E0* (alluvial forests with Alnus glutinosa and Fraxinus excelsior) — 3260 (water courses of plain to montane levels with the Ranunculion fluitantis and Callitricho-Batrachion vegetation) — Habitats Directive Annex II species Cottus gobio and Lampetra planeri All Annex I habitat types and other habitats of species are subject to significant impact as a result of increased levels of nitrogen deposition. Increased sediment loads have adverse significant effects on all water-living species. The most significant damage, direct and indirect, is on habitat type 91E0* through fertilizing and acidifying by nitrogen gases. Compensatory measures | Loss of habitat type 91E0* alluvial forests with Alnus glutinosa and Fraxinus excelsior: Compensation of the direct impacts: ratio 1:3. Compensation of the indirect impacts: ratio 1:2. Source: C(2012) 3392 of 29.5.2012

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.