Investment activities will be carried out in the area where degraded retention tanks are located, i.e.: tank “Browary I” and “Browary II” and tank “Old mill”. The total area of the reclaimed area is 7.33 ha, of which 6.14 ha occupies an area of 3 storage tanks, 0.19 ha of the area of colmatisation tanks. The remaining area of the area. 1 hectares are directly adjacent areas. The shores and bottoms of the reservoirs are largely natural. The bottom of the reservoir is highly muddy (with a significant proportion of organic fraction in the form of rotting plant elements). The Brewery I and II reservoirs, from the west, border with the PGR area, where the sewage treatment plant currently operates, and to the east with asphalt road and industrial and service areas. On the north side of the “Old Mill” reservoir there is a newly built object of sporting and recreational character. The remaining banks of the reservoir are not in any way developed, and are heavily overgrown. Further surroundings of the reservoir are characterised by a significant extent of land development, mainly on the western side there are industrial areas (e.g. cast iron foundry), which play an important role in the environmental status of the above-mentioned reservoir. At present, the reservoirs constitute the so-called "wild swimming pool for the inhabitants of the city. The proposed tanks are contaminated with substances of the group “metals and Metaloids” and “polycyclic aromatic hydrocarbons”. The substance of the first group that exceeds the limit values is copper (Cu), whereas the substances of the second group, which have trans-normative values, are: benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluorantene, benzo(k)fluorantene. The nature of the contamination and the ground-water conditions affect the spread of pollutants.