| Borehole water samples | Sample code | Geographical GPScoordinates | |
| Point X | Point Y | ||
| Drilling 02 | F02 | −3.940513 | 5.385342 |
| Drilling 03 | F03 | −3.94452 | 5.379404 |
| Drilling09 | F09 | −3.941827 | 5.383102 |
| Drilling 10 | F10 | −3.942809 | 5.381667 |
| Drilling 16 | F16 | −3.939799 | 5.374182 |
| Drilling 18 | F18 | −3.943129 | 5.380795 |
| Drilling 20 | F20 | −3.938946 | 5.386214 |
| Control tower | TC | −3.940293 | 5.374087 |