The subject of this study is a project covering investment tasks aimed at increasing the resilience of the city of Bydgoszcz to the influence of climate change and excessive amount of rainwater appearing in increasingly frequent extreme rainfall through the construction of retention reservoirs, development of small retention facilities and organization of rainwater distribution using green-blue infrastructure and nature-based solutions. The existing rainwater drainage network is: •requiring an increase in the management and use of rainwater or meltwater, •overloaded in many parts of the city due to the continuous expansion of the catchment area and its progressive sealing, •requiring, despite ongoing modernisation, adaptation to changes in the rainfall structure due to climate change, •prepared only for partial use of rainwater, •requiring the continuation of previous investments, both in the infrastructure and socio-ecological context. The above problems cause, among others, flooding and flooding of buildings and real estate and problems with maintaining the growing area of greenery in the city in good condition (problems with withering vegetation), damage and destruction of roads, tram tracks. In addition, climate change, resulting in increased rainfall and rainfall intensity, translates into network congestion, forcing appropriate measures to prevent damage caused by flooding caused by heavy rainfall. The material scope of the Project includes the construction and modernization of rainwater sewerage, the construction of retention tanks, the construction of technological chambers for pre-treatment of rainwater and the use of green-blue infrastructure. It is described in more detail in Section 6.3.1 of the Feasibility Study. The infrastructure built as part of this project will contribute to increasing the resilience and retention capacity of Bydgoszcz against natural hazards such as floods or floods. In addition, the green-blue solutions used in the project will allow for the use of accumulated water, among others, for watering urban greenery, powering the sanctuary and fountain, and open water reservoirs. New retention reservoirs and built and modernized rainwater sewerage will contribute to reducing the effects of forecast rainfall, which will allow the system to adapt to ongoing climate change. In addition, the built technological chambers and green-blue solutions will allow the use of rainwater or meltwater for greenery, which will increase the use of these waters in dry periods. In addition, information and promotion activities will be carried out, which are aimed, among others, at promoting the project and raising the awareness of residents about the need for rational and responsible management of rainwater or meltwater and making them aware of the risks associated with climate change and the effects of drought, and at the same time will allow to shape attitudes and pro-ecological behavior and conscious use of the natural environment, especially regarding the resources of water intended for consumption. The actions will target diverse target groups and will not discriminate on the basis of sexual orientation and gender identity, race, ethnic origin, religion, belief or any other criterion leading to so-called negative discrimination. The list of building permits is annexed to this application and the applicant plans to award the following contracts: preparation of design documentation for part of the tasks, construction works (stage I, stage II, stage III, stage IVA and IVB, stage V) and information and promotion activities. The proposed scope of contracts, contract procedures, timetable for tendering and signing contracts (summary of procedures) is shown in Chapter 8.3. SW.