The park boundaries did not satisfy the requests of the social organisations who had been consulted, since it did not fully protect the geological formations holding the water supply aquifers. The area of Vale's R$4 billon Apollo iron ore project was excluded. On the other hand, the park included areas traditionally used by the surrounding communities, causing potential conflict.[2] Roberto Vizentin, president of ICMBio, defended the reduction from 38,200 to 31,200 hectares (94,000 to 77,000 acres) and the high risk of pollution from mining as a necessary compromise given the relatively low Human Development Index in the region.[6]