Steven Matthews (Wicklow, Green Party) | Oireachtas source

All right, and there is a certain level of sulphur or deleterious material that is kind of acceptable to have as it is naturally-occurring. Therefore, there are levels that are acceptable. When was the last time we saw concrete product either from a quarry or a producer that was tested and contained levels above the acceptable standard for sulphurous materials? I am aware NSAI only covers 95 clients and it could have been another body but when was the last time it was notified of such a product?