Tony M May 29, 2011:

OK Well, it looks as though JdM might be on the right track, anyway, particularly with the issue of that singular 'le'

Bon courage !

AllegroTrans (asker) May 29, 2011:

Typo not ruled out completely but the rest of the document seems very well drafted, i.e. I haven't found any other errors (to the best of my knowledge and belief, says I)

Tony M May 29, 2011:

Only once... ... could mean a typo! I spent hours on a wild goose chase with one of these, only to have the customer gleefully tell me it was "just a tiny slip"!

I wonder, could it perhaps be CG DF, where the CG = Conditions Générales (very common in this sort of specifications, with CCTP, etc. etc.) — and cf CGDV = conditions générales de vente

I could hazard a guess that the 'F' might be 'fournitures' (since they seem to be talking about supplying something measurable, rather than any kind of 'prestation de services', for example.

I did just toy with the idea of Conditions Générales De Fourniture, but have to admit that's a pure leap in the dark.

Well, FWIW, "Conditions Générales de Fourniture" does get around 10k Ghits, at least some of which appear to be somewhat relevant; none, though, using the acronym.
I don't suppose, by any chance, you have acess to the rest of the tender package, which just might include this actual document (sounds like some kind of 'bordereau de prix')