Site Background

The Southern Taiwan Science Park is home to a variety of high-tech manufacturing facilities, including those specializing in semiconductor packaging and testing, passive electronic components, printed circuit boards, metal products, machinery, power equipment, and rubber products.

The contaminated factories, operated by various companies since 1979, are distributed throughout the park’s northeast, southwest, and northwest zones.

Pollution Status

Groundwater contamination caused by tetrachloroethylene (PCE) and trichloroethylene (TCE) has impacted an area of 111,354 m², resulting in several official designations for groundwater pollution control sites.

Since its establishment in 1971, the park’s frequent turnover of factories has resulted in a complex legacy of historical pollution with difficult-to-trace sources, posing significant challenges to effective remediation.

Approach

Faced with the challenges of dense factory layouts and limited construction access, GTE provided a comprehensive solution that integrated site investigation, remediation design, and remediation implementation, ensuring highly efficient project progress.

We innovatively implemented a dual-packer injection method, successfully addressing the limitations of traditional techniques. Utilizing advanced permeation technology, we effectively delivered remediation agents to contaminated areas beneath buildings, thereby accelerating the remediation process without disrupting normal factory operations.

Through an effective remediation strategy, we achieved compliance within 1.5 to 3.5 years, securing verification for all affected land parcels between 2018 and 2022. As a result, the site was successfully de-listed.

Follow-up monitoring indicated stable results, with no resurgence in pollutant levels. This allows businesses to confidently meet regulatory requirements without future concerns.