"Produced water - quality and disposal method"

Project,"Volume of produced water (kL)","Average EC (uS/cm)",Characterisation,"Average TPH (ug/L)","Estimated TPH disposed (kg)","Disposal method"
"Camden Gas Project",3464,7566,"Slightly saline",198,2.7,"Majority of produced water sent to third party waste water treatment facility. Residual used for downhole maintenance programs."
"Gloucester Gas Project",4729,5518,"Slightly saline",12431,58.8,"Stored in aboveground dam. Majority of produced water was used  in irrigation trial, blended with fresh water."
"Galilee Gas Project",114089,1834,Brackish,<50,<5.7,"Stored in aboveground dam."

Notes
"TPH: Total petroleum hydrocarbons"
"EC: Electrical conductivity"
"Data relates only to the  volume of water produced from coal seam gas wells. Data does not include water produced during the installation and use of groundwater monitoring bores. It is assumed that the water produced during installation and use of monitoring bores would have TPH = 0 mg/L. "
"Average conductivity data for Camden was based on data from 80% of wells, covering 67% of the water produced at Camden during FY2014. Average TPH data for Camden was based on TPH concentrations at 10 of 12 wells where TPH data was available (representing 54% of the water produced at Camden during FY2014). The additional two wells had high concentrations of TPH which were due to maintenance operations and not consistent with coal seam formations. "
"No water was produced at the Hunter Gas Project in FY2014."
"Data shows a calculated mass of total petroleum hydrocarbons based on the volumes of water produced during FY2014."
"Data is based on the volume of water produced, as it is not possible in all cases to measure disposal volumes given water is often stored in dams prior to disposal. The actual amount of water disposed in FY2014 is likely to be higher than shown due to some water that was produced in prior periods (and stored on site) was also disposed during FY2014."
"Water quality characteristics relate to the quality of the water as measured from the well, not at the point of disposal."
"Characterisation is defined as follows:Fresh water quality - water with a salinity <800 mS/cm.Marginal water quality - water that is more saline than freshwater and generally waters between 800 and 1,600 mS/cm.Brackish quality - water that is more saline than freshwater and generally waters between 1,600 and 4,800 mS/cm.Slightly saline quality - water that is more saline than brackish water and generally waters with a salinity between 4,800 and 10,000 mS/cm.Moderately saline quality - water that is more saline than brackish water and generally waters between 10,000 and 20,000 mS/cm.Saline quality - water that is almost as saline as seawater and generally waters with a salinity greater than 20,000 mS/cm.Seawater quality - water that is generally around 55,000 mS/cm."
"Fresh water quality - water with a salinity <800 mS/cm."
"Marginal water quality - water that is more saline than freshwater and generally waters between 800 and 1,600 mS/cm."
"Brackish quality - water that is more saline than freshwater and generally waters between 1,600 and 4,800 mS/cm."
"Slightly saline quality - water that is more saline than brackish water and generally waters with a salinity between 4,800 and 10,000 mS/cm."
"Moderately saline quality - water that is more saline than brackish water and generally waters between 10,000 and 20,000 mS/cm."
"Saline quality - water that is almost as saline as seawater and generally waters with a salinity greater than 20,000 mS/cm."
"Seawater quality - water that is generally around 55,000 mS/cm."
"GRI Reference: OG-5"