Prior to any groundwater or soil remediation project, a site assessment must be performed. This is necessary to determine the extent of the below ground contamination and whether the contaminants of concern are in the soil, groundwater or both. Since the location of below ground contaminants are not easy to identify, many sampling methods are used to prepare an underground model of the site. McWong Environmental and Energy Group has learned this process and is able to apply these techniques to properly evaluate a site and then determine the most feasible remediation alternative for the site.

McWong's engineering staff has been involved with pump and treat groundwater systems and with soil vapor extraction systems for difficult contaminants such as ethylene dibromide and ethylene dichloride. McWong's staff has even been involved with novel in-situ treat systems such as steam injection methods to enhance soil vapor extraction outputs. Above ground treatment systems that have been operated by McWong engineers include components such as liquid ring vacuum pumps, air strippers, catalytic and thermal oxidizers, and acid gas scrubbers among other technologies.

McWong engineers have first hand knowledge of how to design, build and operated pump-and treat systems, soil vapor extraction systems, and in-situ or ex-situ ground water treatment systems. Our US and China offices are well versed at how to identify the need for soil and/or groundwater treatment and then how to remediate the need to the regulatory clean up standards.