000A88A4.129.tif · 132003.221037

 

¢ MN Cardno
MBK

Table 6.2.1: Groundwater Quality — Exploration Bores

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

 

 

 

 

 

 

 

 

 

 

General '
Parameters
pH Value 0.01 |e 7 & 6.5 to 8.5 Aesthetics
Total Dissolved Solids mg/L 1 106 108 178 500 Aesthetics
Major Ions
Sodium mg/L i 45 31 65 180 Aesthetics
Potassium mg/L I 3 <i <1 NSGV
Calcium mae/L} I 4 3 <1 NSGV
Magnesium mg/L 1 3 3 2 NSGV
Chloride mg/L 1 75 33 74 250 Aesthetics
Bicarbonate mg/L} 1 16 9 4I NSGV
Sulphate mg/L} 1 7 4 7 200 Aesthetics
Metals . : ‘
Antimony mg/L | 0.001} <0.001 <0.001 <0.001 0.003 Health
Arsenic mg/L | 0.001 0.004 6.004 0,001 0.007 Health
Barium mg/L | 0.01 0.11 0.03 0.25 0.7 Health
Boron mg/L] 0.1 <0.1 <0.1 <0.1 03 Health
Cadmium mg/L | 0.0001] <0.0001 | <0.0001 | <0.0001 0.002 Health
Chromium mg/L} 0.01 <0.01 <0.02 <0.01 0.05 Health
Copper mg/L} 0.01 <0.01 <0.01 0.06 2.0, 1.0 HA
Lead mg/L | 0.01 <0.01 <0.01 0.01 Health
Manganese mg/L | 0.01 0.02 0.02 0.5, 0.1 HA
Mercury mg/L} 0.0001; <0.0001 <9.0001 0.0004 0.001 Health
Molybdenum mg/L} 0.01 <0.01 <0.01 <0.01 0.05 Health
Nickel mg/L} 0.01 <0.01 <0.61 <0.01 0.02 Health
Selenium mg/L} 0.01 <0.01 <0.01 <0.01 0.01 Health
Silver mg/L| 0.01} <0.01 <0.01 <0.01 0.1 Health
Nutrients & Others |
Nitrite as N mg/L| 0.01 <0,01 <0.01 <0.04 3 Health
Nitrate as N mg/L | 0.01 0.01 0.02 0.01 30 Health
Total Cyanide mg/L | 0.004 <0.004 <0.004 <0.004 0.08 Health
Fluoride mg/L| 0.8 0.1 <0.1 0.3 15 Health

 

 

 

 

 

 

 

 

 

 

Groundwater from all three exploration bores is outside the preferred range for pH. Low pH
would need to be rectified by the addition of lime or pass age of water through a /imestone bed
filter. The results also showed that groundwater from Bore GW3 is slightly elevated in lead and
manganese. mo OPE egies ,

A water treatment plant will be designed to reduce the concentrations of iron and manganese by
conventional methods using coagulants or lime softening. A detailed treatment process will be
derived during the detailed design phase to ensure that the groundwater extracted from the
proposed bore complies with all the required standards and guidelines relevant for potable
water. It should be noted that a representative of the Department of Natural Resources and
Mines indicated there is no requirement for a groundwater extraction license for the proposed .
bore as the area is not a declared sub-ariesian zone.

 

PETRAS LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
LA7296-03\ReportiFINAL REPORT - 18Sept03.dac Commercial in Confidence Page 21