Its disposal can be made in several ways, which are to be decided following technical, economic and environment protection considerations. The earth quantity removed from the tunnels and engineering structures in the phase of construction, as specified above, consists of various kinds of soils and soil categories.
Soils mined out from the place of engineering structures: In normal situations the refilling made with clean soil excvataed from the place of engineering structure or with debris, as well as with the soil mined out from metro tunnels, does not belong to the category of hazardous wastes.
These are polluted materials either by their original composition, or in case of soils used for refilling, due to contained pollution or wastes (or other materials, e.g. In this latter case, hazardous wastes are those soil categories removed from tunnels and the place of other engineering structures that can form aggressive groundwater hazardous for concrete if mixed with air and water, or comprise chemical components in the presence of which the soil can be considered as a hazardous waste.
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plus Metro TC90BB TC90 FlavorHold Series Half Height Heated Holding Cabinet with Bumper - Holds Nine 18' x 26' Bun Pans. In the period of construction of the new metro line, associated production wastes will include also those earth masses which are to be removed from Metro tunnels, as well as from the place of the engineering structures, connecting tunnels with station buildings (escalators, elevators), and further from the base structure of station buildings. plus Metro C517-CFC-4 C5 1 Series Non-Insulated Heated Proofing and Holding Cabinet - Clear Door. Production wastes in the period of construction In accordance with the above descriptions, the quantity of non hazardous (marketable) wastes produced in the operation period of Metro 4 and estimated on the basis of actual data amounts to 30 or 40 tons/year, and the hazardous production wastes to 60 tons/year. (In compliance with the regulations in force, collection of the material considered as hazardous should be carried out by official collection sites, including their treatment and neutralisation.) All these belong to the group of hazardous materials. Production wastes could be the following:Īnother group of operation wastes includes the wastes produced in the period of metro operation, like oily linen originated from mechanical repair (maintenance) workshops, as well as lubrication oil and grease wastes, paint residues, paint cans etc. Production wastes include wastes of the depot or "by-products" of maintenance and reconstruction works (no dangerous wastes, but marketable materials). Production wastes in the period of operation 1,800 cu.m./year, and that produced in the depot of Kelenfld app. 46 months) amount to about 1,760 to 1,800 tons.īased on the data obtained from the presently operating metro lines, in the period of operation of Metro 4 line the waste quantity is estimated to be app.
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