What are options that I as an environmental engineer student have as going to grad school for civil engineering or environmental engineering. Or would getting an MBA would be much better
There are many graduate degree options: law, MBA, MD, MS, PhD, etc. Which is best for you depends entirely on your career goals.
My son just completed his Civil degree with an environmental engineering specialization. He is going on to a master to Phd program in the fall. Some of the best advice he got when I explored this forum for him was from boneh3ad! There are endless possibilities so it really depends on what you want to do. My son was interested in doing research and thus is pursuing that route. If you have good grades based on his experience I expect that you could get a good job without an advanced degree at all. Your question is really broad. You need to figure out your interest.