| Extension direction | UTM Coordinate Centre | Length | Rate | |
| X (m) | Y (m) | (km) | (km/an) | |
| South-East | 695,670.87 | 2,712,995.17 | 2.83 | 0.24 |
| South | 679,605.44 | 2,712,045.97 | 5.48 | 0.46 |
| South-West | 664,306.42 | 2,709,481.76 | 9.23 | 0.77 |
| West-South-West | 652,292.83 | 2,716,305.38 | 1.09 | 0.09 |