Pennoni Associates assisted a manufacturer in the implementation of a treatment process to remove acetone from pharmaceutical process wastewater. This manufacturer was found in violation of the Pharmaceutical Category Pretreatment Standards by the City of Philadelphia. The company entered a consent decree with the City to have a treatment system in place within 16 months. This project was complicated when it was discovered that the sanitary, rainwater, and process drains were combined into two building outfalls. Shallow tray air stripping was selected as the removal technology. A plan was completed to segregate the process wastewater that included the installation of three pump stations, the segregation of two bathroom drains, and the installation of the 6 to 15 inch cast iron rain water conductors. Prior to the development of the plan, Pennoni assisted in the under slab investigation of the floor drain system. Pennoni provided construction support and inspection services for the pump station installation, drain segregation, and roof conductor installation. A plan was devised for six water meters to be strategically placed throughout the plant to determine the process water consumption. As part of the process development and a consent decree millstone, Pennoni completed a treatability report and oversaw the completion of treatability testing. The process wastewater was sampled over a three-day period, and Pennoni arranged for shipment for offsite treatability testing. This testing confirmed the process and provided equipment-sizing information. Pennoni also designed the modular air stripper system that was constructed off site as a process skid. The process skid is enclosed in a building and is designed to sit outside. Pennoni acted as the owner’s representative in the purchase of the process skid and an influent FRP tank, and provided mechanical, structural, and electrical design installation services.