Impacts of Petroleum Product Marketing Terminals on the Aquatic Environment Examines the potent ial impact of petroleum pr oduct marketing terminal (PPMT) wastewater discharges to aquati c environments to ascertain if there is a need for more stringent regulations. Wastewater discharges by PPMTs were evaluated, the constituents normally present in these waste streams were identified, and their possible aquatic impacts were investigated. It was determined that PPMT wastewater discha rges pose little environmental risk; therefore, stricter regulations for PPM T dischargers are unwarranted