The Environment Agency has asked the High Court for an injunction to prevent waste going to a controversial refuse site in the West Midlands.
A hearing of the injunction case against Refuse Derived Fuel of Moor Street, Brierley Hill, will be held on 3 May
The firm has also been served notices by the Agency requiring waste to be cleared.
Residents of a local estate have complained about a rubbish mountain at the site, which reportedly towers above the level of their houses.
EA environment manager David Hudson said: ‘We appreciate the patience that local residents are showing and would like to thank them for their help and understanding.
‘We would also like to assure residents that we are doing everything we can to resolve the issue and have a dedicated project team working on this.’