‘Inspection of alternative water supply from underground water sources to drilling wells, experimental and filtration studies, full chemical analysis of groundwater , Shumen Municipality’ in five lots: PO1: Examination of wells, testing and filtration studies, full chemical analysis of groundwater 1, 1A, 2,4, 7, 8 water supply system ‘Mutnitsa’, Shumen municipality; PO4: Examination of a well, experimental and filtration studies, full chemical analysis of groundwater, village of Belokopitovo Municipality of Shumen; CP5: Exploration drilling well, exploratory and filtration studies, full chemical analysis of groundwater, location. Strumba Municipality of Shumen; PO2: Examination of drilling wells, experimental and filtration studies, full chemical analysis of groundwater, village of Drumevo, village of Ivanski, two shaft wells, Shumen municipality; CP3: Examination of drilling wells, experimental and filtration studies, full chemical analysis of groundwater, drilling well Tsarev Brod village, Shumen municipality 41188.1.47; Conducting a full technical, geophysical, hydrogeological and analytical survey of five existing wells in order to assess their current condition, structural integrity, water productivity and hydrogeological characteristics, as well as preparing the necessary documentation for their restoration and commissioning, including preparation for issuing permits for water abstraction, in accordance with the requirements of the Water Act and Regulation No 1 of 10 October 2007. Activities under the contract that the Contractor will carry out: Preparation of the necessary documents for the issuance of a permit for water abstraction from groundwater through new water abstraction facilities from the BDHR-Varna, including: Justification for water abstraction from the water source – in accordance with the Water Act and Regulation No 1 of 10 October 2007 on the exploration, use and protection of groundwater; Project for a water-supply zone in accordance with the Water Act and Regulation No 3 of 16 October 2000 on the conditions and procedure for the study, design and operation of water-supply zones. Opening of the wells and surveying by video recording of the trunk to its full depth in order to determine: the overall condition of the operating column; the state of the exposed trunk (if any); the integrity and connection of individual pipe sections; presence of cracks, gaps, leaks from burning aquifers; the condition and location of filters, as well as the quality of the back-pipe cementation; presence of fallen objects; monitoring of crack systems, karst formations and other geological structures; presence and position of quicksand; determination of the water level; effective depth of the facility. Geophysical examination of the trunks for: establishing the design of the wells; measuring the diameter of the trunks; localization of areas with water inflow. Experimental filtration studies (experienced abstractions) to determine: hydraulic efficiency of water sources; hydrogeological parameters of the aquifer. Preparation of complete technical documentation for issuing a permit for water abstraction, including: Characteristic of the part of the water body; Determination of the parameters of water abstraction; Hydrogeological parameters; Geodetic surveying. Water survey: full chemical analysis with microcomponents; microbiological analysis; radiological analysis. All samples shall be taken with accredited sampling and analysed in an accredited laboratory. Preparation of hydrogeological survey of the well, accompanied by: well design data; results of hydrogeological tests; records of laboratory water tests. Preparation of a report on the necessary construction and installation works for the restoration of the facilities, including: a summary of the state of play of the wells; proposals with technical justification for the repair of the drilling shafts; recommendations for commissioning.
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