By Sally Brown, University of Washington
Under the auspices of the USDA CREES program, every year a group of scientists get together to talk about their work related to municipal biosolids. It is the very same group who, decades back, started and carried out the research that became the backbone of the Part 503 regulations. Over the years many of the most famous members of the group have retired or moved on. Last year for example, we said goodbye to Rufus Chaney whose work at USDA over decades added immensely to our knowledge of metals in soils and biosolids.