(1) The standards specified for that development are that the development must--(a) not have a water depth of more than 300mm, and(a1) not have a surface area of more than 10m 2, and(b) if it is constructed or installed in a heritage conservation area or a draft heritage conservation area--be located in the rear yard.
(2) Despite subclause 1(a), a pond sump may be placed in a water feature or pond below a water depth of 300mm if the sump is covered with a bolted or anchored grate that is capable of supporting a weight of 150kg.