We have posted the recording for the two-part webinar, California Crawl Spaces: Integrated Solutions for Healthy Homes & Deep Energy Reductions, on the 1000 Home Challenge website. Your comments and questions/discussion from the webinar are welcome here.
Thanks to the presenters, Graham Irrwin and Gavin Healy, and respondants Don Fugler and Rick Cowperthwaite, and to Pacific Gas & Electric Company's Energy Training Center for making this webinar successful!
Here is the link to the webinars.
One of the resources referenced during the webinar was "Steps for Improving a Wall-vented Crawl Space" by Rick Cowperthwaite. This was drafted for California energy and housing professionals. It is attached to this post.