Where can one go in the Bay Area to meet other Dutch people, speak the language,
stay in touch with events on the home front, etc.?

You might want to join and/or talk to organizations in and around bay area. 
I found these organizations on Holland in bay area:

The Holland Club of San Francisco 
Contact: Mr. A. Koppen Drayer 
3950 Monterey Blvd. 
San Leandro, CA 94577
Tel: (415) 357-7987 

Holland America Society of California
Contact: Ms. Els Winters 
2 Southwaite Court 
Orinda, CA 94563 
Tel: (510) 367 1083

Netherlands Society of Northern California 
Contact: Ms. Joanne Moleski 
3271 Catalina Avenue 
Santa Clara, CA 95051 
Tel: (408) 241-5795 

Netherlands Benevolent Society 
Contact: Mrs. Henney Neys 
549 Ellesmere Dr. 
Walnut Creek, CA 94598
Tel: (510) 939 7128 

You might start by goign to one of the events held in the area. There is 
probably nothing coming up soon however you may check this site later:
For events calender on the west coast:
http://www.ncla.org/arts_cultural/events/events_calendar.html

Heres some additional information that I found on 
http://www.nacwest.net/Dutch%20Community.htm. 
Organizations in the West:

1. The Netherlands America University League of California:
It is a non-profit organization founded in 1985. It promotes the interaction of 
Dutch and Flemish culture with American arts and sciences in the San Francisco 
Bay Area. 
http://www.naul.org/sys-tmpl/door/
'Click on Calendar of Events' for whats coming up! 

2. Holland American Society of California
http://www.rexx.com/~ddc/has/
Click on calendar of events
They also publish a newsletter. Editor is Dennis de Champeaux, in case you need 
to contact:
14519 Bercaw Lane
San Jose, CA 95124
ph 408 559 9413 fax 559 7264

3.NLBorrels 
It is a non-profit network for Dutch expat professionals and entrepreneurs 
dedicated to increasing social interaction, career advancement and exchange of 
information of interest to the Dutch community living in the USA and Canada.
http://www.nlborrels.com/nl/index.html
Click on events for whats going on (west as well as east coast)

This is probably not the exact answer you are looking for but hopefully I have 
been able to get you headed in the right direction!