According to ‘Environmental Information (Scotland) Regulations 2004’,

“Every Scottish public authority has a duty to make environmental information available on request.”

There are exemptions, one of which is

“Regulation 10(4)(d) - Material which is still in the course of completion, unfinished documents or incomplete data. Material which is still in the course of completion.”

For full details, see:

http://www.itspublicknowledge.info/Law/EIRs/EIRs.aspx