(1) Save as hereinafter provided no more than one interment shall be allowed in any grave space at any one time except where-
(a) the grave is non-exhumable; and
(b) the human remains of the second (or subsequent) burial are those of a close relative of the deceased first buried in the grave; and
(c) not more than one set of encoffined human remains is buried in the grave at any one time, unless the specific consent of the Board is given in writing.
(2) The Board may permit a second or subsequent burial in an exhumable lot where-
(a) the unexpired term of the lot is not less than 6 years; and
(b) the human remains of the second (or subsequent) burial are those of a close relative of the deceased first buried in the grave; and
(c) not more than one set of encoffined human remains is buried in the grave at any one time, unless the specific consent of the Board is given in writing; and
(d) the higher of the fee for a niche in an ossuary or in a columbarium is paid to the Board in addition to any other fees payable.