Become familiar with important environmental legislation.
Clean Air Act
Clean Water Act
Comprehensive Environmental Response Compensation and Liability Act (CERCLA)
Safe Drinking Water Act
Toxic Substances Control Act
Environmental law has come to be an unbrella term encompassing many specific areas of practice for example:
International environmental law and environmental justice are two relatively new specialties but both are expanding rapidly.
Lawyers practicing environmental law can work for federal, state, and even local agencies where they may help to shape governmental policy. Of course many lawyers practicing environmental law work for nonprofit organizations, private law firms, and corporations.
Find law firms with environmental practices:
The Yale Law School Career Development Office has created an Environmental Law Guide. In Chapter 4 there are number of personal narratives. Attorneys working in government, nonprofit organizations, and law firms describe the kind of work they do. Highly recommended.
There are a number of job boards. Sign-up for feeds to get notification of new postings.
Probably the last thing a new law graduate wants to do in spend another year in school but earning an LL.M. in an environmental law subject may be an important factor in setting you apart from other job applicants.
You may be able to supplement your law school education with relevant graduate level classes or earn a certificate. UGA has a number of excellent programs.
One of the most effective job search strategies is to be current on the issues. Monitor blogs and publications of the active organizations. You'll be ready to answer and ask pertinent questions.