At request by the Investor, two exploitation wells have been constructed in order to improve the water supply of the Zhelino municipality - Tetovo. For this purpose, on-site and office activities have been conducted. Field prospection and terrain investigations have been conducted in order to determine locations for two exploitation wells in Quaternary sediments represented by alluvial sediments.
Two exploitation wells have been constructed with the following phases: preparation works and construction of well drilling bases, rotational well drilling with diameter of 600 mm and using water as drilling fluid, installing well structure of plastic PVC pipe with diameter 300 mm, incorporating filter plug - granulate with grain size 4mm-8mm, incorporating base material in upper zone, purifying the wells by using clean water, purifying the wells by using compressed air (airlifting), and well testing.
Physical and chemical, bacteriological, and radiological analyzes have been made of the groundwater and qualitative characteristics have been obtained. During the hydrogeological investigations and construction of the exploitation wells, the following has been determined: filtration coefficient, porosity coefficient, radius of well depression, groundwater capacity, proposal and selection of pumps, manner of exploitation for both exploitation wells, and conclusions and draft recommendations.
With the construction of the two exploitation wells, additional 30 l/s have been achieved, the capacities and hydrogeological parameters have been determined with which the goal for improvement of the water supply for the municipality of Zhelino – Tetovo, has been reached.