AF9 -Contamination impact survey

Activity factsheets


Contamination impact survey

What is it?

It is a survey, based on primary and secondary data[1] collection and analysis, to locate and mark hazards contamination, to inform local population and improve their safety. It also gathers useful information to prioritize further technical interventions (NTS, TS, Mines/ ERW/ IED clearance and disposal).
Two types of data collected:
• Evidence of hazards, number and type of accidents to evaluate the threat level
• Local socioeconomic impact of this contamination to inform and prioritize further humanitarian intervention (i.e. schools, health centres, roads, areas with economic potential).
In emergency and open conflict, the team will focus on preventing accidents by marking hazards and informing local residents based on evidences.

[1] Primary data: first-hand information – Secondary data: from previous surveys and files.


All affected population, Mine Action and local authorities,
future involved stakeholders and communities.

What FOR?

To improve human security, socio-economic situation of target-communities living around hazards, by allowing them to adopt safer behaviours and safer livelihood strategies.


The methodology to implement Contamination Impact Survey is inspired from Non-Technical Survey (NTS) methods and standards but, unlike NTS, it does not form part of the land release process.

It consists of 3 steps:

– The first step is to conduct a desk assessment of available information. This involves collecting information from past records (where these exist), seeking information from central institutions and other relevant sources of information such as the police, military, hospitals, local authorities, other local groups, etc.;

– The second step of the contamination impact survey is to visit the targeted area to meet with woman, girls, boys and men in the local community, conduct interviews and inspect, from a safe distance, any areas that may be contaminated by mines/ERW;

– The third step is to analyse the information in order to distinguish between irrelevant information and important evidence.

Required documents

  • Contamination impact survey / Marking SOP
  • Tailored contamination impact survey training package
  • List of trainee’s certificates delivered


Internal: Technical Advisors assess if contamination impact survey training package fulfils quality requirements

External: MAC/UNMAS assess contamination impact survey training package satisfies quality requirements, is in compliance with IMAS/NMAS and they control the quality of contamination impact survey training conducted by HI


The methodology to implement Contamination impact survey refers to some extent to the NTS methodology, which is explained in details into IMAS, and must be developed based on NMAS and integrated into internal SOPs.

Monitoring, Evaluation, Accountability and Learning references



RE: Contamination impact survey is combined with RE activities where local population is informed about hazards, marking signs, and safe behaviours to adopt.

VA: Collection information about victims and accidents is part of contamination impact survey, do transfer the information to VA actors.

Advocacy: Share key findings if relevant.


Keep in mind that women, men, girls and boys, and persons with disabilities, must all be included: they have different roles and experiences to share and as such, complementary information to give.

Photo credits

  1. Xavier Bourgois / Handicap International