Project

Churngold selected from a list of five other European specialist remediation contractors on the basis of innovative technology and experience.

First major remediation contract of its kind in South Africa, won with alternative bid against a specified air sparge vacuum extraction remediation strategy.

Contaminant

Free product oil contamination in shallow sands aquifer. Wide range of volatile and semi-volatile dissolved phase contaminants in groundwater and pesticide contamination in soils.

Challenges

Design of barrier wall to provide structural support to adjacent buildings and prevent recontamination of sitefrom off-site impacted areas. Hitting stringent risk based site specific clean up levels for dissolved phase contaminants. Design support and operation of an overseas project.

Churngold Solution

Innovative in-situ groundwater remediation technology Oxygen generation and delivery systems (electrolytic and direct infusion) utilized to achieve remedial target concentrations with projected £300k cost saving and 12 months reduction in timeframe. Soils excavation and specialist surface free product skimming technology used to tackle areas of oil contamination.

Technologies employed

• Oxygen generation and delivery systems - electrolytic and direct infusion
• Oxygen release powder in excavations Specialist floating free product skimming unit