We'll try to help answer that question in this article. Most credential programs have requirements for minimum educational level, professional experience, and knowledge or qualifications. There are some certifications available for entry level personnel but these are generally not recognized by most industry professionals. These credentials are primarily managed by licensing boards and appear to be the most widely recognized. The recent surge in underground storage tank removals and groundwater and soil remediation projects have enhanced the PG status.
Plans require a PE stamp.
However, most states do not recognize any single environmental credential as necessary proof of competence. Other environmental credential programs are offered by professional associations for their members or by institutions or boards. These are typically aimed at environmental professionals in non-specific disciplines who require recognition in their field. A brief overview of some of the credentials is also included below. The Professional Engineer license is among the most recognized and rigorous of environmental credentials.