500m buffer zone at Item 53.3.4 (drainings)

500m buffer zone at VLAREM Heading 53.3.4 (drain rings). Buffer of 500m around areas in Flanders of Special Protection Areas or the Flemish Ecological Network or "valley area" or "valley and source area". The 500-metre buffer zones around Natura 2000 areas outside the Flemish region, cut off from the regional border, have also been added.