Denny’s Muffler Service Chemical Injection

An unknown volume of gasoline was released from a leaking gasoline underground storage tank site in Cedar Rapids, Iowa that presented a risk of petroleum vapor intrusion into nearby commercial structures and sanitary sewer utilities in the area. VJ Engineering designed a remediation plan to reduce the risk of petroleum vapor intrusion by means of an injection of chemical oxidizers into the subsurface in order to degrade residual petroleum hydrocarbons residing in soil and shallow groundwater at the site. Recent soil sampling and analysis revealed that previously high concentrations of benzene in the in soil at the site have declined below applicable risk target levels. Additional groundwater sampling and analysis is scheduled for the site.