There's a plan to temporarily dump builder's rubble, soil and other inert waste up to 30 feet high at the Longue Hougue reclamation area.
Guernsey Waste is applying for planning permission to stockpile waste on the landfill area that sits south of St Sampson's harbour.
It will be on a temporary basis, when the reclaimed land project there comes to an end later this year.
Guernsey Waste say the 'hill' created will be extensive, roughly the size of 2.5 football pitches.
At 9 metres high, it will provide enough space for three and half years, at current tipping rates.
Material will also be added to the outside of the site so that the perimeter barrier, or bund, will protect the seaward edges.
It's expected this will swallow another 7,500 cubic metres of inert waste material.
Given the inert waste 'hill' will be temporary, the States will have to decide on whether to use Les Vardes quarry on the west coast for this sort of material, or, potentially, extend Longue Hougue southwards, across Spur Bay.
This is controversial, as a species of cricket, unique to the Channel Islands, lives there.
Guernsey Waste say rubble and other materials are screened before being tipped to see if they can be reused. Developers or also encouraged to reuse materials, for instance as hardcore, on new projects.
The application states there won't be any increase in traffic and measures will be taken to reduce dust in the drier months.
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