NIMBY is the acronym of “Not in My Backyard”, the syndrome of which has been used in North America after Love Canal case, as a convenient label to discredit citizens' opposition to hazardous waste disposal siting. A symposium to de-mystify NIMBY syndrome was held in 1983 at York University with participants from various parties. In this paper, the key issues of the symposium are firstly introduced characterizing typical standpoints of senior/local governments, industries, activists or environmentalists, journalism/academism, etc. Referring to the recommendations of workshop in the symposium, risk assessment and environmental mediation are considered to be most expectable tools to resolve NIMBY disputes. These are nextly discussed here in comparison with Japanese situation of waste management policy. The most distinct difference may be the perception of democracy crisis brought by NIMBY-leading waste management. When NIMBY is based upon ultimate fear of woman's miscarriage or birth defect of children, an image to in-formàre socio-environmental system for waste management can be depicted by intrinsic matching of “individual” with “Lebenswelt”. The last part of this paper deals with an esquisse for the proposed system in terms of in der Welt sein vis-à-vis consumer.