The removal of ground or surface water from a site can result in contaminants entering the receiving environment such as heavy metals and polymers from drilling slurry, as well as sediments, clay, dirt which cause water quality degradation.
Dewatering and the removal of excess stormwater require authorisation if water is being released back into the natural environment.
Dewatering application form (88kb pdf) Stormwater authorisation application (88kb pdf)
Fees
- Dewatering authorisations: incorporates application review, authorisation preparation and time and costs associated with one site visit and one round of discharge monitoring - $450 (or actual costs if initial monitoring round analytical fees exceed $20).
- Stormwater authorisations: incorporates application review, authorisation preparation and time and costs associated with one site visit and one round of discharge monitoring - $670 (or actual costs if initial monitoring round analytical fees exceed $50).