Soil particle size distributions related to subsurface drainage systems in the Netherlands, the United States and Canada

Abstract

In order to check the state of subsurface drain/envelope combinations, several dig-ups were made in the State of Michigan (United States), the Province of Ontario (Canada) and the southwestern part of the Netherlands, These opportunities were used to sample soil material in the vicinity of the pipe as well as sediment inside. No preparatory moves were made as regards sample containers, sample preservation etc., so all sampling activit1es have been fully incidental in their nature