Career outcome? I work in the environmental science field. Most people do well in the field. Many move from being field technicians to being project managers or even vice presidents during their environmental science careers (over decades). Some leave the field for other fields for various reasons.
It seems to be steady work though because the laws are always changing and there are many drivers forcing companies to clean up sites, from community pressure, to government regulators, to insurance companies, to people just looking to improve a property as a real estate investment.