Although there are no nuclear facilities in Clwyd, there are nuclear powers stations and reprocessing plants in neighbouring counties giving rise to concerns about raised radioactivity levels in Clwyd. Queries about the levels of radiation had to be researched and investigated from published government and generating board sources, which were often out of date. At the time of the Chernobyl reactor accident information was difficult to obtain and often issued too late for action to be taken by the local authorities. An independent radiation monitoring scheme for Clwyd was therefore set up at the beginning of 1988. The First Annual Report includes all the information relating to the running of the scheme together with all the results obtained within the county during 1988. The objectives of the report are to indicate the variation in levels of background radiation within the county and compare these results with those obtained by other local authorities, public utilities and government bodies. Air, beaches, sand and silt, seaweed, meat, milk and fish were sampled and radiation levels measured. (UK).