Sydney
9.10 Direct discharge by user
Supporting Information
Delta Electricity discharged a total metered volume of 4,885 ML from Wallerawang Power Station to the Coxs River (upstream of Lake Lyell). Industrial wastewater from the power station was treated and discharged to the river.
Quantification Approach
Data Source
Provided by
Method
Ultrasonic flow meters were used to measure discharge from the power stations.
Assumptions, Limitations, Caveats and Approximations
Discharge from power stations flows to the Coxs River and its tributaries.
Uncertainty Information
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/– 2%. Meters are regularly calibrated. The NSW Office of Water conducts an annual verification review on Delta Electricity's water data.
Comparative year
The following table compares the value for the 2009–10 year reported in this account with the corresponding value reported in the 2010 Account.
2011 Account line item |
2010 Account line item |
Value reported in the 2010 Account (ML) |
Value reported in the 2011 Account (ML) |
Additional information |
9.10 Direct discharge by user |
13.7.3 Discharge after use by industries |
6,160 |
6,160 |
Change in line item name |