Regional Solutions Co. Ltd. senior management and associates have been involved in surveys and appraisals including rapid rural and participatory appraisal in the Region and beyond. Examples include a survey “to evaluate the effect of domestic biodigester installations, as perceived by a representative number of households in four provinces of Cambodia with respect to the Programme’s activities such as promotion, construction, quality assurance, training and after-sales service” commissioned by the Netherlands Development Organisation (SNV), to adjust the implementation of a National Biodigester Programme (NBP). Present Managing Director U.W. Schmidt lead a survey team, designing survey methodology, supervising field testing and training of enumerators and writing the final report. Processing was done at home office using SPSS software, with a high share of multiple choice and ranking questions allowing for a very high number of computable variables which were the base for further development of the National Biodigester Programme.