This chemical manufacturing plant, classified as a TSDF (Treatment Storage and Disposal Facility), was the subject of a RCRA Facility Assessment (RFA) conducted by EPA Region 4. The RFA identified Solid Waste Management Units (SWMUs) at the facility and a draft Administrative Order on Consent was subsequently issued mandating that RCRA Facility Investigations (RFIs) be performed on eleven SWMUs. Like many historical industrial operations under RCRA, the subject SWMUs include a multiple legacy waste handling areas. Hart & Hickman presented the findings of on-going assessment and remedial design efforts and was successful in obtaining for more favorable placement of the subject SWMUs within the RCRA process. Corrective measures completed to date include installing HDPE liners in multiple solids handling basins, installing an 800 ft long horizontal groundwater recovery system utilizing a one-pass trencher, removal of 30,0000 tons of waste sludge from two industrial wastewater treatment lagoons and subsequent pond restoration, and removal & restoration of a 30,000 ton disposal area within a flood plain.