Oxfam's Emily Greenspan writes about threats to a Peruvian law requiring the consultation of indigenous people before development occurs. Peru is apparently considering foregoing such consultation in its most productive oil block. "This would violate Peru’s indigenous peoples’ consultation law and the human rights of the indigenous communities inhabiting the area, as articulated in the International Labor Organization’s Convention 169 and the United Nations Declaration on the Rights of Indigenous Peoples," Greenspan writes. There already has been extreme pollution in that block: "Oil companies have dumped millions of barrels of production waters directly into the Tigre, Corrientes, Pastaza, and Marañon rivers in Block 192 over the last four decades," Greenspan further writes.