OPEC President Purnomo Yusgiantoro said on Thursday, the cartel would discuss whether to raise its official oil output ceiling at its Sept. 15 meeting and would want to see a faster retreat in oil prices. "That is part of the agenda that will be discussed. If we consider that needs to be done we will inventory how much spare capacity that we have from each member of OPEC, so we can increase the OPEC quota," he told reporters. "We will also meet with non-OPEC and other oil producers to discuss ways to cool down the oil price and to stablise the price." He said the current retreat in global oil prices was not moving fast enough. Crude oil prices have sank nearly $6 from last week's record highs of $49.40 a barrel for U.S. light crude . "The oil price is falling but not much at the moment. The downturn is slow. We hope the price will continue to fall. We hope it can fall to around $30 per barrel. That is good enough," said Purnomo, who is also Indonesian oil minister.///