JPMarks wrote:

I am traveling to Tuscany near the village of Gioranni d' Asso, 45
minutes south of Siena. Is anyone aware of any soaring available in
the area?

I guess you mean San Giovanni d'Asso. Well, you could bite the bullet
and drive to Rieti which is some 150km south of San Giovanni.

A complete list of Italian soaring sites can be found he
http://www.fivv.org/pagine/dove-volare.htm