Page 31 - CPC 2018 Annual Report

POLLUTION PREVENTION AND ENVIRONMENTAL PROTECTION 29
CPC CLEANS UP: GROUNDWATER AND SOIL REMEDIATION
Since the promulgation of the Soil and Groundwater Pollution Remediation Act by the administration of President Chen Shui- Bian in 2000, the EPA has several times announced the Soil and Groundwater Pollution Remediation Act Enforcement Rules, subsidiary legislation and related control standards. Many CPC plant locations have been listed as pollution response sites, as pollution control sites or pollution remediation sites. The appropriate and respective pollution response, control and remediation plans have been proposed and the company has implemented the related soil and groundwater pollution surveys and pollution remediation measures in accordance with the EPA regulations. CPC currently has 4 listed response sites, 23 listed control sites, and 5 listed remediation sites while remediation has been completed at 25 sites in recent years.
CPC's Kaohsiung Port Terminal site was leased by the company from the Port of Kaohsiung and used for loading and unloading oil cargoes until operations were suspended in 1996. The Environmental Protection Agency (EPA) listed it as a soil control site on December 23, 2015 and the control plan subsequently
proposed by the company was approved by the Agency on November 4, 2016. Over 105,000 tons of gravel have been lifted from the site and stored outside at two locations to await remediation. The greater part has now been fully cleared and some has been returned to the site; the work of remediation goes on and the company aims to finish it as quickly as possible so that the previously imposed controls can be lifted.
CPC's Kaohsiung Refinery ceased working at the end of November 2015. As it was built a long time ago and operated for many years, almost all of the soil and groundwater across its total area have been listed as contaminated sites. The company is dismantling structures above ground - including workshops, process plant, pipelines and related facilities - and also removing pipelines from two meters beneath the ground. In addition, gas pumping/injection pollution control technology is being deployed as also is strengthening the downstream gas injection interception system to prevent pollutants from flowing out of the site. The natural flow of groundwater frm upstream to downstream will be incorporated into the process. The overall remediation process will take 17 years and the plans call for the work to be carried out across separate areas in discrete phases.