Water

Environment Protection Licences

 

The Snowy Mountains Scheme is operated in accordance with three Environment Protection Licences. These Licences issued by the NSW Office of Environment and Heritage outline the conditions relating to pollution prevention and monitoring.

Environment Protection Licences regulate air, noise, water and waste impacts and are issued to the owners or operators of various types of premises under the Protection of the Environment Operations Act 1997.

Copies of Snowy Hydro’s Environment Protection Licences can be viewed below;
- EPL 13161 Transporter of Waste

- EPL 10379 Cabramurra Town Sewage Treatment Plant

- EPL 10515 Scheme Wide Operations

This Pollution Incident Response Management Plan has been developed and made publicly available in accordance with Part 3A clause 98D(2) & 98D(3) of the Protection of the Environment Operations (General) Amendment (Pollution Incident Response Management Plans) Regulation 2012 for Snowy Hydro Limited Environmental Protection Licences (EPL) 10515, 10379 & 13161.

- Public Pollution Incident Response Management Plan

 

Monitoring data collected as a result of a licence condition can be seen below:
EPL10515 Monitoring Results Power and Pumping Stations

EPA Identification No. Description of Location Discharge Volume TPH Concentration Monitoring Data
1 Murray 1 Power Station North Drainage Pit Chart Chart Link
2 Murray 1 Power Station South Drainage Pit Chart Chart Link
4 Murray 2 Power Station Drainage Pit Chart Chart Link
7 Tumut 1 Power Station Drainage Pit Chart Chart Link
9 Tumut 2 Power Station Drainage Pit Chart Chart Link
10 Tumut 3 Power Station Drainage Pit Chart Chart Link
11 Guthega Power Station oil/water separator discharge line Chart Chart Link
13 Blowering Power Station Drainage Pit Chart Chart Link
14 Jindabyne Pumping Stationoil/water separator outlet Chart Chart  Link
16 Eucumbene Dam River Outlet Worksoil/water separator discharge Chart Chart  Link
26 Jounama Power Station Drainage Pit Chart Chart Chart Chart  Link


EPL10515 Pollutant Discharge Limit Conditions
Pollutant Unit of Measure 50 percentile concentration limit
 90 percentile concentration limit 100 percentile concentration limit
Total Petroleum Hydrocarbons mg/L 8 10 15

These conditions apply to all TPH discharges from power/pumping stations across the scheme. 


EPL10515 Volume Discharge Limit Conditions
EPA Identification No. Site Unit of Measure Volume Limit
1 M1 North Drainage Pit kL/day 1080
2 M1 South Drainage Pit kL/day 1080
4 M2 Drainage Pit kL/day 5000
7 T1 Drainage Pit kL/day 2160
9 T2 Drainage Pit kL/day 2160
10 T3 Drainage Pit kL/day 5500
11 GPS oil water separator discharge line kL/day 250
13 Blowering Drainage Pit kL/day 225
14 JPS oil water separator discharge line kL/day 750
16 Eucumbene ROW kL/day 150
26 Jounama Drainage Pit kL/day 2000

These discharge limits apply at all times, except during penstock draining, pump unit pipeline draining and tunnel dewatering.

EPL10379 Monitoring Results – Cabramurra Sewage Treatment Plant

EPA

Identification

No.

Location

 Monitoring

Data
2 Discharge from STP Outlet Tap Link
3 Upstream of STP discharge point Link
4 Downstream of STP discharge poin Link

 

EPL10379 Volume Discharge Limit Conditions -Cabramurra Sewage Treatment Plant
Pollutant Unit of Measure 60 Percentile concentration limit 90 Percentile concentration limit 100 Percentile concentration limit
Oil & Grease mg/L 2 2 10
pH pH units 6.5-8.5 6.5-8.5 6.5-9
Nitrogen (total) mg/L 10 10 15
Phosphorous (total) mg/L 0.3 0.3 1
BOD mg/L 10 10 20
Total Suspended Solids mg/L 15 15 30
Faecal Coliforms CFU/100ml 200 200 600
Nitrogen (Ammonia) mg/L 2 2 3


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