Chlorinated solvents are widely used in various industries in Taiwan. Once solvents leak and spread into subsurface, the difficulty of investigation and remediation of these solvents are higher than heavy metal and total petroleum hydrocarbons (TPH) contaminants due to their higher mobility in the heterogeneous, hydrogeological conditions. The following tasks have been completed in accordance to the objectives of the project: conducted the three-stage investigation of soil and groundwater contamination at the ten chlorinated solvent operating factories selected; assisted EPA in performing the investigation and verification of contaminations of other potential sites; updated and modified the guidelines of DNAPL investigation issued by EPA. The final report of this project encompasses the feedbacks of site screening and investigation procedure, in hoping that these will assist EPA to set up an economical and effective method in processing future chlorinated solvent operating cases.

Chlorinated Solvent, Operating Factory, Soil and Ground Water