Venezuela's refineries, including the 955,000-barrel-per-day Paraguana Refining Center, are in a state of severe decay with little ongoing maintenance, making them unlikely to attract foreign investment soon. Workers describe the facilities as ugly and rusty, with open-air waste pits nearly full and residue seeping across pipelines and valve stations. The Paraguana complex, which comprises the Amuay and Cardon refineries, has had no major repairs this year, and fully restoring Venezuela's refining capacity would require at least $20 billion, according to energy analyst Oswaldo Felizzola. While some U.S. and multinational oil companies have shown interest in Venezuela's crude and natural gas production, they have little incentive to rehabilitate local refineries, especially since U.S. refineries are already configured to process Venezuelan heavy sour crude. Recent legislation allows private companies to operate refineries, but analysts say the model is unattractive due to a new tax of up to 5% on refiners' gross income and the government's policy of selling fuel domestically at well below operating cost.