L. The installation, alteration or replacement of a microgeneration ground source heat pump within the curtilage of a building other than a dwellinghouse or a block of flats.
L.1 Development is permitted by Class L subject to the following conditions—
(a)the total area of excavation must not exceed 0.5 hectares;
(b)the development must not result in the presence within the curtilage of more than 1 ground source heat pump; and
(c)a pump is removed as soon as reasonably practicable when no longer needed and the land is, as far as reasonably practicable, restored to its condition before the development took place, or to such condition as may have been agreed in writing between the local planning authority and the developer.