Venezuela’s state oil company PDVSA said on Tuesday that a storage tank at its Amuay refinery had overflown because of heavy rains and that a cleanup had begun to avoid the stain spreading further in the surrounding bay. Reuters reported earlier on Tuesday that a slop tank at Amuay had spilled over, polluting the bay and staining tankers, according to a union leader and two refinery workers. Union leader and government critic Ivan Freites said it was hard to quantify the size of the spill, but that it was significant and could be around 200,000 barrels of products, including gasoline and gasoil. PDVSA attributed the spill to heavy rains and did not provide details on its size. Critics of leftist President Nicolas Maduro’s administration say lack of investments and lax environmental safeguards have led to an increase in polluting oil spills in the oil-rich Maracaibo […]