Regulatory environment The Group —because of the industry in which it operates— is subject to strict environmental regulations, in terms of emissions, soil remediation and regulation of substances. a) Industrial emissions Directive prevention and control), transposed into Spanish legislation through Spanish Law 5/2013, requires that the integrated environmental authorisations be adapted at all facilities to which it applies and requires that the best available techniques (BAT) be applied in production processes within four years of publication of the conclusions from the reference documents on the best available techniques (BAT reference documents) applicable in each case.