I was recently reminded that the Environmental Law Institute has a terrifc environmental jobs bulletin board, at http://www.eli.org/Associates/bb_jobs.cfm .
Unfortunately, there is a catch - only ELI members can access it. The bulletin board is a password-protected site designed only for members. An individual ELI membership costs $120 per year. For law students, however, there is a complimentary 1-year membership available. (http://www.elistore.org/member.asp)