My son is an Environmental Engineer. He was employed locally in less than two weeks after graduation in an environmental consultant firm.
He studied courses in chemistry, biology, bio-chemistry and all of the standard required courses for an engineering degree.
The opportunities and demand for environmental engineers and environmental scientists seems to be very good. My son is constantly traveling around to different road projects and construction sites, analyzing, mapping and surveying wet lands, determining if the projects are detrimental to the environment or wildlife and consulting with the contractors to suggest alternative options when the projects need to set aside wet lands or be rerouted or, in some cases, relocated completely. He uses maps and GPS equipment and puts up little, different colored flags all over the area. Constantly writing reports and sending maps and areal photos to the EPA and local businesses that will or might be impacted by a proposed project.
He is doing well and really seems to like the work he is doing.
The reputation in the engineering department? A lot of ribbing for being a "tree hugger", but it is all in good fun - and he feels he is doing his part to help preserve the environment and wildlife, and that's a pretty noble goal.