The subsoil investigation report for New Ashgabat InternationalĀ Airport Project consists of field investigations such as boreholeĀ drillings (160nos), with standard penetration tests (SPT), permeability testing (lugeon or variable/constant head tests), pressuremeter tests, field CBR test, cone penetration tests (CPT), dynamic cone penetration tests, field vane tests, trial pits, in-situ density tests, plate loading tests, dynamic plate loading tests, seismic reflection tests, PS Logging and two dimensional electrical resistivity test.