SNH have assessed the costs incurred for the work which they undertook in the 1990s (including the 1998 public consultation, research on impacts of beavers on hydrology, fish and forestry, feasibility of re-introduction, population modelling and identification and evaluation of candidate trial sites) at £71,411 and they estimate that associated staff costs over that period amounted to approximately £100,000.From 2000, when SNH decided to develop a proposal for a trial at Knapdale, their additional research costs are assessed at £82,202 and SNH estimate that associated staff costs over this period amounted to £197,235.Forestry Commission Scotland (which is the owner of part of the land in Knapdale identified as a potential trial site) estimates that it has incurred costs of approximately £25,000 in connection with their investigation of the proposal.No separate record has been kept of time taken by the Scottish Executive or other public bodies in considering the proposals.