Pollution Monitoring

Under the NSW Protection of the Environment Operations (POEO) Act 1997, Hill End Gold Limited (HEGL) is required to formulate a Pollution Incident Response Management Plan (PIRMP) and to make this plan publicly available on our website. A link to the plan in .pdf format is below: You will need a .pdf reader to open and read the file, if you do not already have one please download a free copy of Adobe Reader by following this link Free Adobe Reader

 icon HEGL PIRMP 15/05/2017 (329.49 kB)

 

The following is a link to HEGL's Environmnet Protection Authority Licence No. 12008

The licence requires HEGL to monitor and publish pollution monitoring data.

Maximum concentration limits for three Pollutants for both Monitoring Point 1 and Monitoring Point 2 have been set by the Environment Protection Authority, please see table below:

Maximum Concentration Limits
Pollutant Unit of Measure 100 percentile concentration Limit
 Oil and Grease Milligrams per litre 10
 pH  pH 6.5-8.5
 Total suspended solids Milligrams per litre 50

Point 1 requires HEGL to monitor daily any outflow from the Reward Mine. As the Reward Mine is in Care and Maintenance and not producing any outflow there is consequently no data available.

Point 2 requires HEGL to monitor quarterly during discharge the groundwater seepage emanating from the Amalgamated Portal to the Reward Mine. Monitoring is in the form of a Grab Sample which is forwarded to a laboratory for analysis. The results of past and recent testing at Point 2 are below:

 Discharge & Monitoring Point 2 - Analysis Results

 icon Amalgamated Outflow Analysis 2013 (35.46 kB)

icon Amalgamated Outflow Analysis 2014 (36.32 kB)

icon Amalgamated Outflow Analysis 2015 (36.14 kB)

  icon Amalgamated Outflow Analysis 2016 (207.02 kB)

 

 Current Year 2017

Pollutant Unit of Measure
Monitoring frequency required by licence Number of times measured

 

03/01/2017

Result

 

31/03/2017

Result

 

 

Result

 

 

Result

100 percentile limit

 Exceedence

Yes/No

Alkalinity (as calcium carbonate) Milligrams per litre Quarterly during discharge  2  <1  <1
Arsenic (total) Milligrams per litre Quarterly during discharge  2  0.002 0.002 
Cadmium (total) Milligrams per litre Quarterly during discharge  2  <0.0001 <0.0001 
Calcium Milligrams per litre Quarterly during discharge  2  77  68
Chloride Milligrams per litre Quarterly during discharge  2 70   73
Chromium (total) Milligrams per litre Quarterly during discharge  2 <0.001   <0.001
Copper (total) Milligrams per litre Quarterly during discharge  2  0.002  0.003
Electrical Conductivity Microsiemens per centimetre Quarterly during discharge  2  847  876
Iron Milligrams per litre Quarterly during discharge  2  <0.05  <0.05
Lead (total) Milligrams per litre Quarterly during discharge  2  <0.001 <0.001 
Magnesium Milligrams per litre Quarterly during discharge  2  34  36
Mercury (total) Milligrams per litre Quarterly during discharge  2 <0.0001   <0.0001
Nickel (total Milligrams per litre Quarterly during discharge  2 0.003  0.003 
Oil & Grease Milligrams per litre Quarterly during discharge  2 <5   <5 10 No
pH  pH Quarterly during discharge  2 8.3   8.4 6.5-8.5 No
Potassium Milligrams per litre

Quarterly during discharge

 2  3  3
Sodium Milligrams per litre Quarterly during discharge  2  49  50
Sulfate Milligrams per litre Quarterly during discharge  2 135  131 
Total Suspended Solids Milligrams per litre Quarterly during discharge  2 <1  <1  50 No
Zinc (total) Milligrams per litre Quarterly during discharge  2  0.015  0.007