These Regulations require persons with custody or control of a crop being made into silage, of livestock slurry or of certain fuel oil to carry out works and take precautions and other steps for preventing pollution of inland or coastal waters. The principal changes respect to past legislation are: (a) to redefine the meaning of the term "silage" as "any forage crop which is being, or has been, conserved by fermentation or preservation (including the use of additives), or both, and which is intended for consumption by livestock"; (b) to make provision to ensure that places where silage is proposed to be stored are at least 10 metres from inland or coastal waters; (c) to allow persons making bulk bagged silage on farms to do so without restrictions where bags in which that silage is kept incorporate a facility which allows for the safe removal of excess effluent; (d) to allow for substantial reconstruction of an exempt structure with the agreement of Scottish Environmental Protection Agency ("SEPA"), where the risk of pollution will be reduced; (f) to extend the powers available to SEPA to serve notices in respect of all structures used for purposes covered by the 1991 Regulations rather than being restricted to exempt structures where there is a significant risk of pollution identified; and (g) to allow SEPA in cases where a notice requiring works is necessary to require the drawing up and implementation of a Farm Waste Management Plan in accordance with methods identified for the collection, storage and land application of slurry and manure contained within guidance currently contained within the Code of Good Practice for the Prevention of Environmental Pollution From Agricultural Activity.