...ject is to demonstrate the feasibility and cost-effectiveness of full-scale bioaugmentation (BA) for the remediation of a significant CAH groundwater contamination at the projectâs location, the Punch Metals site. CAH groundwater contamination at the site is estimated at 500 000 m3 and this contamination has migrated about 1 km off-site, underneath a forest, reaching a depth of 50 m. The benefic ...