The Control of Pollution (Silage, Slurry and Agricultural Fuel Oil) Regulations 1991

6.—(1) Subject to sub-paragraph (2) below, the slurry storage tank shall have adequate storage capacity for the likely quantities of slurry produced from time to time on the premises in question having regard to—

(a) the proposed method of disposal of the slurry (including the likely rates and times of disposal); and

(b) the matters mentioned in sub-paragraph (3) below.

(2) Where it is proposed to dispose of the slurry on the premises by spreading it on the land nothing in sub-paragraph (1) above shall require the tank to have a greater storage capacity than is adequate, having regard to the matters mentioned in sub-paragraph (3) below, to store the maximum quantity of slurry which is likely to be produced in any continuous four month period.

(3) The matters to which regard is to be had under sub-paragraphs (1) and (2) above are—

(a) the storage capacity of any other slurry storage tank on the premises in question;

(b) the likely quantities of rainfall (including any fall of snow, hail or sleet) which may fall or drain into the slurry storage tank during the likely maximum storage period; and

(c) the need to make provision for not less than 750 millimetres of freeboard in the case of a tank with walls made of earth and 300 millimetres of freeboard in all other cases.