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.
Fees
- Dewatering authorisations: incorporates application review, authorisation preparation and time and costs associated with one site visit and one round of discharge monitoring - $463.50 (or actual costs if initial monitoring round analytical fees exceed $20.60).
- Stormwater authorisations: incorporates application review, authorisation preparation and time and costs associated with one site visit and one round of discharge monitoring - $690.10 (or actual costs if initial monitoring round analytical fees exceed $51.50).
Dewatering and Stormwater authorisation
You will need 30 minutes to successfully complete this form providing you have all the relevant documents listed below.
If you need additional time to complete this form, it will stay active within this browser (on this device) for 10 working days.
- A site plan
- Proposed treatment plan
- Contaminated site management plan
- Detailed site investigation report
- Discharge flow rate and pipe capacity engineering drawings
- Knowledge of the soil type on your site.
Once submitted your permit should be approved within 10 working days, providing you have provided all the necessary information.
If you have any questions or require clarification on what is required then please contact james.piddock@tauranga.govt.nz
Dewatering and Stormwater authorisation form