RPI Group Trusted to Work in Yellowstone National Park The RPI Group Companies, including AST Environmental and Alpine Remediation, successfully installed a 215-foot long (65.5-meters) permeable reactive barrier parallel to the Yellowstone River to safeguard the river from petroleum contamination. The RPI Laboratory processed both soil...

Over 22 years ago, RPI revolutionized the remediation industry by inventing carbon-based injectates. A key goal was to develop a process requiring no maintenance, starkly contrasting the pump-and-treat and dual-phase extraction systems so prevalent then, as well as ephemeral injectates like oxygenates. These remedies require...