Legacy industrial and pharmaceutical manufacturing sites create complicated mitigation challenges due to chlorinated solvents and hydrocarbons, like benzene, while active pharmaceutical sites introduce unique underlying soil conditions, clean work rules, and strict air pressure requirements. Clean Vapor’s diagnostic, design, and construction teams are experienced in overcoming these challenges while delivering customized mitigation systems with patented response-driven controls and remote management solutions for these unique conditions.
Clean Vapor designed and installed a passive vapor intrusion mitigation system as a preventative measure against a known groundwater plume. The system included a specified aggregate, an engineered plenum, and riser vents above the building.
Because of the sensitive nature of pharmaceutical manufacturing, conventional sub-slab sampling ports located throughout the floor space were deemed an unacceptable contaminant exposure risk to the production process. Therefore, the sub-slab matrix and monitoring equipment included sub-slab monitoring pressure probes, riser monitoring probes, pressure differential tubing, conduit routing vacuum tubing to a centrally located monitoring pane, and a vapor membrane with sprayed seams.
This 55-acre brownfield redevelopment project is constructed over shallow groundwater and a BTEX/VOC plume attributed to a neighboring airport and former manufacturing facilities. The project included designing and installing vapor installation mitigation systems for five large buildings, covering more than 1 million square feet of retail, office, hotel, and light industrial space. The project included a 158,000-square-foot Walmart Supercenter and numerous other retail and restaurant establishments.
Clean Vapor provided oversight of the construction of the mitigation system and installed the sub-slab monitoring system, which features sub-slab vacuum probes to verify pressure differentials.
In 2015, following building construction, post-mitigation sampling of the passive system revealed no soil gas exceedances applicable to NJDEP criteria resulting in no requirement for system activation.
This large pharmaceutical manufacturing and packaging facility operates under high security, using proprietary formulas with variable pressure clean rooms to maintain product purity standards. The manufacturer required elevated industrial hygiene precautions to be in place during the installation, which occurred during almost continuous manufacturing. The project also required a minimally invasive OM&M solution.
The system features response driven controls that automatically adjust the blower speeds during clean room manufacturing pressure changes and for seasonal variability. Web based monitoring and control functions record performance for quality assurance and limiting long term liability. Independent continuous indoor air contaminant and pressure monitoring verified the high function and effectiveness of these systems.
