The project involves the repair of 3 gas regulating stations from the system of “Bulgarttransgaz” EAD /Gas Regulating Station (GRS) “Kremikovtsi”, GRS “Sofia 1 – Kazichene” and GRS 3 “Voluyak”/, a purification facility “Gorni Bogorov,” and 8 valve nodes along the main gas pipeline (southern branch) in the regions of Plovdiv and Haskovo. In the buildings, installations were replaced, and architectural finishing works were carried out (updating of facades, floors, floorings, and ceilings), as well as the execution of vertical planning. Existing fences were dismantled, and new ones were built using metal panels made of profile steel and galvanized mesh. Concrete paving slabs were installed, and information signs were placed along the fences.