Screens Open hole, Perforated – – – – (metres) section not casing encased 273.8 (246) Year drilled 1927 1948 1951 1972 1958 – Standing 33 (1972) 64.7 (1972) 1.2 (1958) – –32.91 – water level (1970) (natural surface elevation) Total depth 42.7 61 152.4 157.3 246 273.7 (metres) Natural 157 154 157 163.5 – – surface elevation (mAHD) Facility Existing Existing Existing Existing Existing Existing status Facility type Artesian Artesian Artesian Artesian Artesian Artesian bore, bore, bore, bore, bore, bore, controlled ceased to controlled controlled controlled controlled flow flow flow flow flow flow Physicochemical parameters EC (µS/cm) 690 709 744 788 776 – pH (field/lab) 8.3 8.5 8.8 8.5 8 – Temperature 27.3 30.8 32.9 32.3 39.2 – (°C) Chemical parameters (milligrams per litre) Dissolved – – – – – – oxygen TDS – – – – – – TSS 415 435.65 453 478 468 – Sodium (Na) 162 172.9 176 190 184 – Potassium 1.4 0.3 1.6 1.1 1.5 – (K) Calcium (Ca) 1.2 2.9 2 0.9 2 – Magnesium 0.5 0.3 0.5 0.1 0.2 – (Mg) Chlorine (Cl) 39 38.3 38 38 48 – Sulfate 1 0 1 1 1 – (SO4)
Screens (metres) – – – – Open hole, section not encased (246) Perforated casing 273.8 Year drilled 1927 – 1948 1951 1972 1958 Standing water level (natural surface elevation) – –32.91 (1970) 33 (1972) – 64.7 (1972) 1.2 (1958) Total depth (metres) 42.7 61 152.4 157.3 246 273.7 Natural surface elevation (mAHD) – – 157 154 157 163.5 Facility status Existing Existing Existing Existing Existing Existing Facility type Artesian bore, controlled flow Artesian bore, ceased to flow Artesian bore, controlled flow Artesian bore, controlled flow Artesian bore, controlled flow Artesian bore, controlled flow Physicochemical parameters EC (µS/cm) 690 – 709 744 788 776 pH (field/lab) 8.3 – 8.5 8.8 8.5 8 Temperature (°C) 27.3 – 30.8 32.9 32.3 39.2 Chemical parameters (milligrams per litre) Dissolved oxygen – – – – – – TDS – – – – – – TSS 415 – 435.65 453 478 468 Sodium (Na) 162 – 172.9 176 190 184 Potassium (K) 1.4 – 0.3 1.6 1.1 1.5 Calcium (Ca) 1.2 – 2.9 2 0.9 2 Magnesium (Mg) 0.5 – 0.3 0.5 0.1 0.2 Chlorine (Cl) 39 – 38.3 38 38 48 Sulfate (SO4) 1 – 0 1 1 1
gab-springs-survey-vol-2_0.docx