I'm not trying to discourage you, but I would echo chraya's sentiment. I have been practicing law for 11 years, mostly environmental law. I went into environmental law because of a love of the environment, namely hiking, biking, skiing, camping, etc., as did many of my colleagues. I first got a masters in environmental policy, which was a way to distinguish myself in a niche practice area. With all that said, the actual practice of law does not have much to do with the environment, and my job NEVER gets me outdoors. You might love law, and some do, but it doesn't necessarily have to be in a field that you have an outside interest in, since the actual work will not remotely give you the pleasure that your hobby/passion does. And to be at the top of the legal game often entails giving up many things you love to do. Many of my friends are trying to figure out where to go next.
Moreover, this is a terrible time to graduate from law school. The cost of the education is really too high for the few well-paying jobs that are out there. I fortunately graduated at a time that the big firms in New York would hire almost anyone from a top school, and it was pretty easy to get an overpaid job in the top quarter of a 2nd or 3rd tier law school. Those days are done, for better or worse. If you're not at an ivy or equivalent school, or at the very top of a regional school, then well paying jobs are few and far between, especially in a niche area. If you love engineering type work, I would pursue that, or at least think long and hard about law school.