Where are the various evap valves on a 2000 S70?
 

I found the "evap check valve" pictured here clipped to the right side cooling fan shroud (by the battery, under the air intake hose) on my 2000 non-turbo S70.

http://www.swedishautoparts.com/shop...ve-9470775.jpg

Most of the sites also sell an "evap purge valve" for that year:

http://www.swedishautoparts.com/shop...ve-9135444.jpg

I can't find that latter one. Anyone have a diagram showing the evap system routing, or able to tell me where the latter would be located? Should I replace both at the same time? Car is getting a gross leak code preventing it from passing emissions tests.

Your car should have the top one only. But it also has a canister shut off valve by the canister.