Councillors are calling for a probe into huge amounts of rubbish left after a teenagers' dance party in the summer.
The Radio 1 dance party was held on Brighton beach in August and there were complaints about the debris.
Tory group leader Geoffrey Theobald and his deputy, John Sheldon, asked Brighton and Hove Council for a scrutiny investigation.
They asked: "How was it that the massive rubbish tip that the beach became was not cleared for some days?"
The scrutiny management committee will decide today whether to order an investigation.
A report from environment director Alan McCarthy and culture director Sarah Tanburn said the dance party had previously been staged on Madeira Drive as a road show.
This time it was moved to the beach to make it more of a party and to minimise traffic congestion.
The report says about 25,000 people went to the event and many took glass drinks bottles.
Cleansing firm Sita was supposed to clear up the mess but some litter pickers failed to turn up for the night and early morning shifts.
As there was a lot of rubbish and broken glass on the beach, the council took the decision to close a 200-metre stretch even though it was the height of the holiday season.
Litter bins had been provided but some were knocked over, leaving even more broken glass on the beach.
Glass was hard to remove from the beach and kept resurfacing as the shingle shifted.
The report says: "Clearly there are lessons to be learned from this in event planning and beach cleaning."
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