The subject of this order is the implementation of Contract IV, which includes the following tasks:
• Task 2 — Construction of rainwater drains in the area of Sulechowska and Gorzowska streets;
• Task 7 — Section of the drainage system through the construction of a rainwater drainage system and the construction of a retention and spreading reservoir in the area of Zyta and PodUpper streets;
• Task 10 — Construction of rainfall and melt water cleaning equipment and outlet of rainwater drains at M. Curie-Skłodowska Street in the Gęśnik canal catchment;
• Task 11 — Construction of rainfall and melt water cleaning equipment in the Gęśnik canal catchment for the existing outlet of the rainwater drainage at Giżycka Street.
3.1. The subject of this order is the implementation of Contract IV, which includes the following tasks:
• Task 2 — Construction of rainwater drains in the area of Sulechowska and Gorzowska streets;
• Task 7 — Section of the drainage system through the construction of a rainwater drainage system and the construction of a retention and spreading reservoir in the area of Zyta and PodUpper streets;
• Task 10 — Construction of rainfall and melt water cleaning equipment and outlet of rainwater drains at M. Curie-Skłodowska Street in the Gęśnik canal catchment;
• Task 11 — Construction of rainfall and melt water cleaning equipment in the Gęśnik canal catchment for the existing outlet of the rainwater drainage at Giżycka Street.
Task 2 will consist of:
• construction of rainwater drains with diameters from DN 200 to DN 500 from Ronda Rada Europa, through Trasa North Street to Gorzowska Street in Zielona Góra,
• construction and reconstruction of rainwater drains and canals in the catchment of the streets covered by the investment.
Task 7 includes:
• construction of rainwater channels:
about DN 400 - approx. 0.17 km,
about DN 300 - with a length of approx. 0,32 km,
o DN 200 (rain drain connection) - approx. 0.08 km,
• decommissioning and dismantling (demolition) of existing kd200 channels with a total length of 0.04 km,
• construction of equipment for the cleaning of rainwater and melt water - a two-chamber vortex settler with a lamell cartridge of 15l/s -1 pcs. ,
• construction of a retention tank with an active capacity of 200 m3.
Task 10 includes:
• construction of two parallel running stormwater cleaners (settler and petroleum separator),
• construction and reconstruction of rainwater drains with diameters from DN 800 to DN 1000,
• construction of the outlet into the waters,
• construction of control and measuring elements (well or measuring chamber and sampling pit).
Task 11 includes:
• construction of two parallel running stormwater cleaners (settler and petroleum separator),
• construction of control and measuring elements (well or measuring chamber and sampling pit),
• construction and reconstruction of a rainwater drainage network with diameters from DN 1000 to DN1200 length 46.0 m,
• construction of a culvert (spurning) with a length of up to 30m,
• construction of landscaping elements around the cleaning plant facilities, including fencing, site hardening, lighting and downhill.