The following intervention measures may be taken to prevent or mitigate a substantial fall in prices: - aid for private storage, - buying in by intervention agencies. ... Intervention measures may be taken when the Community market price for pig carcases, as established by reference to the prices recorded in each Member State on the representative markets of the Community and weighted by means of coefficients reflecting the relative size of the pig herd in each Member State, is, and is likely to remain, at less than 103% of the basic price.