To treat contaminated ground water on a 3 Hectare site to remove high levels of cyanide, PAH's ammonical compounds and some Heavy metals to normal water consents. Whilst Contractor is removing all contaminated material and replacing with 3 metres of infill.
Pumping commenced 1st week of November 1999 treating 100 - 150 tonnes of highly contaminated ground water per day. Typical levels of contaminate requiring treatment were:
|Cyanide||100-300ppm||> 1.2 ppm|
|PAH'S||400-750ppm||> 2 ppm|
|Phenols||40-100ppm||> 2 ppm|