Dot. point II.1.1) of the announcement – due to the limited number of characters, the full name of the contract is: "Construction and reconstruction of rainwater sewage system and adaptation of the rainwater sewage system to climate change in the city of Bydgoszcz. Construction and reconstruction. Completion of construction works. IIIb. Part 1A, Part 1B." The subject of the contract is: - construction of gravity rainwater sewage system, - construction of outlets, - construction of rainwater and meltwater pre-treatment plant, - reconstruction of existing utilities colliding with the planned investment, - liquidation of the existing inactive utilities of the area colliding with the planned investment, - reconstruction of road surfaces after works related to the implementation of the contract, - construction of exits and access roads, - restoration of green areas, - execution and implementation executive designs of temporary traffic organization, - felling of trees and shrubs, replacement plantings, - preparation of as-built documentation.

Part 1A of the contract covers the execution of construction works specified in the tasks: 1) C2_K8K9_4.13 "Rain channel no. 1 in Jagiellońska street and in Krakowska street to property no. 18 and 21 along with reconstruction of the water, sanitary and gas network", 2) C2_K8K9_4.13 "Rain channel ø0.6m in Krakowska street – replacement of the existing rain channel on the section from property no. 18 and 21 to the Brda river – section 1", 3) C2_K8K9_4.13 "Construction of a new outlet to the Brda River in Bydgoszcz", including m.in.: - rain channels with diameter: 1.25x0.75m; 0.9m; 0.6m; with a total length of 292m, - outlets. A detailed description of the subject of the contract is presented in the Description of the Subject of the Order (hereinafter OPZ), constituting Part III of the SWZ.

Part 1B of the contract includes the execution of construction works specified in task C2_K18K30_5.2b_5.4 "Extension of the rainwater sewage system in Bydgoszcz in the area of Kard. Stefan Wyszyńskiego", including m.in.: - outlet, - rainwater treatment plant W10A, - Channels and inter-facility networks with diameters: 1.6m; 0.8m; 0.6m; 0.63m with a total length of approx. 97m, A detailed description of the subject of the contract is presented in the OPZ.