On the infrasound issue I suggest you look at the latest briefing notes:
RenewableUK - Low frequency noise and wind turbines
http://www.bwea.com/pdf/lfn-annex.pdf (BWEA technical annex, 2005)
RenewableUK - Low frequency noise and wind turbines - Keele rebuttal
Having said that if the turbine in question is going to be a 2-bladed device then it is quite likely to be a WES or a Vergnet machine.
The most likely WES candidate is an upwind machine
http://www.wes30.com/files/pdf/Compl...on%20WES30.pdf .
The most likely Vergnet candidate is a downwind design
http://www.vergnet.com/pdf/gev-mpr-en.pdf
For the eagle eyed amongst you note that the infrasound studies generally concentrate on the emissions from upwind turbines. The Vergnet is a downwind machine and as such should not be so quickly dismissed. Whilst it is smaller than the 2MW US machine where ground borne vibration was noted, and it has a very different tower layout, it is worth enquiring. My opinion is that the Vergnet is unlikely to be an emitter but this should be answerable as a straightforward technical query (they may already be checking themselves if they wish to erect in the Eskdalemuir protected zone).
You will ordinarily find that the wind industry is an evidence-based engineering industry and if you raise valid concerns they will themselves act correctly. Both WES and Vergnet and their respective UK partners are serious organisations, and a factual enquiry is likely to elicit a factual response.
Regards,
pp
(edited to correct typos)