Pollution Remediation for a Closed Gas Station

Site Background

This remediation site is a closed gas station located in Gangshan District, Kaohsiung City, near the Gangshan Interchange of the Zhongshan Expressway, on land owned by the Expressway Bureau. 

Pollution Status

In 2009, the Ministry of Environment designated this site as a remediation area for soil and groundwater pollution, primarily impacted by benzene and TPH* in soil, and methylene chloride, benzene, MTBE*, and TPH* in groundwater. The pollution was concentrated primarily between 2 and 4 meters below the ground surface.

Remediation Approach

In 2011, ApolloTech was contracted to conduct a pollution survey, remediation planning, and execution. During the project, we collaborated with academic institutions to identify and apply local diesel-degrading bacterial strains to enhance bioremediation. This approach enabled us to treat roughly 3,000 tons of contaminated soil. For groundwater remediation, we implemented in situ biological aeration combined with low-concentration hydrogen peroxide infusion, successfully treating the groundwater pollution. The project was verified and de-listed as a control site in 2013. Through this work, ApolloTech assisted the client in successfully remediating the polluted land, enabling its redevelopment and reuse.

Note:  *Total Petroleum Hydrocarbons (TPH)
               Methyl Tert-Butyl Ether (MTBE)