I’m not sure about this number, but on the Inform San Diego page about these fires (http://informsandiego.org/WebInform/ResourceDatabase/SearchEngine/Focus/FocusTopicResults.asp?FocusTopicID=6), I see the following number a few times:

“Volunteers to call Volunteer San Diego – (800) 865-8683 Toll-Free”

That might at least be a starting point.

By the way, I think the correct Web address for the church is http://www.fbcmm.org/