Topographic and Geodetic Measurements in Bulgaria

This contract involves the re-measurement of four first-class leveling lines from the State Leveling Network (SLN) with a total length of 716.8 km, as well as two leveling lines to connect the main leveling benchmarks of the tide gauge stations in Burgas and Varna with the SLN. The project is divided into five specific positions: Position 1: Re-measurement of leveling line No. 17 from VNR 13 (Dobrich) to VNR 28 (Varna) with a length of 203.8 km. Position 2: Re-measurement of leveling line No. 18 from VNR 13 (Dobrich) to VNR 28 (Varna) with a length of 52 km and a connection line to the main leveling benchmark of the Varna tide gauge station with a length of 11.4 km. Position 3: Re-measurement of leveling line No. 20 from VNR 28 (Varna) to VNR 63 (Burgas) with a length of 153 km and a connection line to the main leveling benchmark of the Burgas tide gauge station with a length of 15 km. Position 4: Re-measurement of part of leveling line No. 50 from VNR 63 (Burgas) to VNR 79 (Elhovo) from VNR 63 (Burgas) to VNR 85 (Malko Tarnovo) with a length of 168 km. Position 5: Re-measurement of part of leveling line No. 50 from VNR 63 (Burgas) to VNR 79 (Elhovo) from VNR 85 (Malko Tarnovo) to VNR 79 (Elhovo) with a length of 140 km.