South African Weather Service
Appointment of service provider to assist with assessment of underground water table for purpose of borehole drilling.
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Appointment of service provider to assist with assessment of underground water table for purpose of borehole drilling.
Tender Close Date:
Appointment of service provider to assist with assessment of underground water table for purpose of borehole drilling.
Tender Close Date:
Drilling
Annexure a building maintenance boq
1 x pressure pump and control panel 0, 75kw replacement of pressure pump 0, 75kw replacement of pressure pump 1, 7kw min to 3, 5kw drilling: unconsolidated and consolidated sediments and igneous and metamorphic rocks for bore holes. rotary air percussion 152 mm diameter m section external works casing, including supply, delivery and installation, but not including reaming, casing upvc casing class 6 to be perforated at the bottom where water table is reached for borehole. 110 mm m steel casing slotted 165 mm state wall thickness here as 4 mm m 215 mm state wall thickness here as 4. 5 mm m 254 mm state wall thickness here as 4, 5 mm m 273 mm state wall thickness here as 6 mm m reaming of boreholes up to **** 165 mm to 203 219 mm diameter m 203 219 mm to 254 mm diameter m 152 165 mm to 254 mm diameter m sitting borehole sitting site assessment no desk study m sitting no testing supervision sampling for water quality test and reporting no blow yield tests hr operations and maintenance manuals 4 copies yearly
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Drilling
Chemical and mechanical cleaning services of deep production and monitoring boreholes: table mountai
Tender Close Date:
Water Table Analysis/ Borehole Drilling
**** - Perform a comprehensive hydrogeological studies in Tjovitjo Informal Settlement
perform a comprehensive hydrogeological studies in tjovitjo informal settlement johannesburg water is seeking quotations from qualified service providers to perform a comprehensive borehole investigation. the objective is to assess the feasibility and characteristics of potential borehole sites for water extraction and ensure the selection of the most suitable location for drilling. the service provider is expected to complete the following scope while ensuring that all activities comply with relevant environmental and safety regulations the identification of potential locations using existing geological maps, aerial photos and field mapping as required. using geophysics to identify optimal positions andor to move drilling positions to more accessible or favorable places. 1. desktop study potential determination 1. source all historical information, as well as geographic information relating to the geohydrological setting. 1 2. use aerial photographic data and satellite imagery to identify target areas for on
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