The 2005 regulations do not specificallyaim to reduce or increase any activity. Instead, the regulations adopt a risk-basedand proportionate approach to the regulation of all activities which impact on thewater environment.In relation to the culvertingand covering over of streams, the regulations aim to ensure that the environmentalimpacts caused by these activities are given due consideration in the design, constructionand maintenance of the structure, and will ensure that best practice is adopted.