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HEADING PAGE - port of ploce authority * welcome

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ENVIRONMENTAL IMPACT STUDY<br />

Rn: 03-033 CONTAINER TERMINAL PLOCE <strong>PAGE</strong>:59<br />

Municipal sewage waters contain different kinds <strong>of</strong> heavy metals, high amount<br />

<strong>of</strong> suspended and dissolved organic matter and nutritious salts. These loads<br />

as well as less intensive streaming within the <strong>port</strong> aquatorium are the main<br />

factors influencing the limpidity reduction, sedimentation <strong>of</strong> suspended matter<br />

and increase <strong>of</strong> nutritious matter amount within the <strong>port</strong> aquatorium, which, in<br />

conditions <strong>of</strong> increased temperature and a proper illumination <strong>of</strong> water column<br />

may lead to an accelerated overgrowing or a mass development <strong>of</strong> algae.<br />

These processes may have unfavourable impact on the sea ecosystem as<br />

well as on aesthetic properties <strong>of</strong> sea water.<br />

The <strong>port</strong> itself may load the <strong>port</strong> aquatorium by its activities, the freight<br />

tranloading from ships.<br />

Emptying <strong>of</strong> untreated waste water from the equipment maintenance facilities<br />

is a considerable source <strong>of</strong> sea pollution.<br />

Concentration <strong>of</strong> heavy metals (cadmium, lead, copper, zinc, vanadium and<br />

nickel) and polycyclic hydrocarbons in sediment <strong>of</strong> the Ploce <strong>port</strong> are<br />

characteristic for areas under a very low anthropogenic influence.<br />

Polychlorinated biphenyls have been not detected. Sediment load with heavy<br />

metals is quite possible result <strong>of</strong> discharge <strong>of</strong> untreated sewage into the <strong>port</strong>.<br />

RIJEKAPROJEKT d.o.o.

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