Lots of people want to see new renewable energy projects spring up for things like solar and wind power.  But finding suitable locations for such large projects is often a huge challenge.  That’s why there’s much encouragement about a new effort by the Bureau of Land Management to begin looking at dozens of previously contaminated parcels of land that could be reused for new power projects.  According to Environment and Energy Publishing, 81 such sites are being considered in Arizona, including a 20-acre gravel pit in the rural northeast and an unused 3,000 acre landing strip north of Tucson.  Not surprisingly, industry and environmentalists alike are keen on this idea of cleaning up trouble spots and not having to disturb new lands for power projects.