Non-technical survey is a semi-intrusive, on-the ground activity conducted to verify information from the desk assessment. Well-trained survey teams study and analyse data from the desk assessment prior to gathering information from informants and visiting suspected sites.
The survey focuses particularly on visible evidence of cluster munition remnants (evidence points), bomb casings, and other evidence that may help establish the contaminated area. Non-technical survey staff will, when appropriate, walk randomly into suspected areas to look for evidence of cluster munition remnants.
The non-technical survey is sometimes combined with an impact assessment whose purpose is to identify socio-economic impact from cluster munition remnants and guide prioritisation of follow-on technical survey and clearance. Non-technical survey can sometimes define fairly accurate Confirmed Hazardous Area (CHA) polygons (affected areas). At other times, non-technical survey must be reinforced with elements of technical survey for improved accuracy of the CHA polygons