Take the technical committee’s survey here
In its effort to target regions and topics needing more attention, the International Geosynthetics Society (IGS) Technical Committee on Filtration has created a 20-question online survey. Participants from the geosynthetics community are asked to take a few minutes to report on the state of practice from their region or from other areas where they work.
Take the survey at: https://www.surveymonkey.com/s/W9NTJMC