The project involves the design and execution of construction works in the field of investment “Countering natural disasters in Wieliczka”. The scope of the Order includes all necessary actions to correct, comply with the provisions, terms of the Agreement, the requirements specified in the Functional-Use Program for Part 1 and 2 and the best available knowledge to design and execute the Order Object. The order will be carried out in the area of the town of Wieliczka, in the Lesser Poland Voivodeship.

Part 1 - Construction and repair of rain drains from the outlet to the Serafy River to Sienkiewicza Street.

Part 2 - repair of rainwater drains in Goliana Street by trench-free method

The subject of this part of the Order is the design and execution of the construction, reconstruction and repair (renovation) of the rainwater sewer network and facilities in the city of Wieliczka, including:

- Construction of approx. 1.2 km of rain sewer network with diameters Ø 1200-1800 mm,

- Repair (renovation) approx. 0.18 km of rain sewer network with a section of 2200x1900 mm,

- Construction of 1 stormwater retention reservoir, closed, with an active capacity of at least 1000 m3, with a drainage zone of at least 500 m3, together with a stormwater supply plant with a nominal capacity of at least 540 l/s, a storm overflow chamber and infrastructure accompanying,

- Construction of 1 stormwater retention and evaporation reservoir, open, with an active capacity of at least 100 m3, with an evaporation zone of at least 30 cm deep, including a stormwater supply plant with a nominal capacity of at least 450 l/s, a storm overflow chamber and infrastructure accompanying,

- Construction of 1 rainfall water supply plant discharged to the receiver, i.e. the Serafy River, with a nominal capacity of at least 540 l/s, together with accompanying infrastructure and storm overflow chamber in front of the undertreatment plant,

- Construction of 1 stormwater outlet together with reinforcement of the bottom and slopes of the receiver,

- Repair of 1 stormwater outlet with reinforcement of the bottom and slopes of the receiver

and related to the construction, demolition and restoration of road pavements and pedestrian strings, as well as the reconstruction of infrastructure colliding with planned facilities.

The order also includes:

- Development of a hydrodynamic model for the rainwater sewer network (existing and planned in order), together with retention tanks, within the limits of the sewer catchment, from which rainfall water will be discharged to the planned rainfall water supply plant at Dembowskiego Street in Wieliczka,

- Implementation of a system for monitoring, visualization and data archiving for the rainfall water supply plant, retention tank and vaporization reservoir implemented in the scope of the Order.

The object of this part of the Order is the design and execution of the renovation (renovation) of an existing rain collector with sections 1200/800 and 1350/900 in Goliana Street, on the section between Uprising Warszawskiego Street and Sienkiewicza Street, approximately 171 m in length, including:

- Repair of the collector by excavation method, using on-site hardened lining,

- Repair of the wells and sewer chambers on the renovated section of the collector, using construction chemistry,

- Treatment and reinforcement of places of inclusion of connectors to the collector using hat fittings.