Decree 4.830 of 15 October 1997 defined the boundaries .
Decree 4.830 of 15 October 1997 gave an area of 2,833.26 hectares ( 7,001.1 acres ) .
Decree 4.830 of 15 October 1997 defined the boundaries , and gave an area of 2,833.26 hectares ( 7,001.1 acres ) .