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ENVIRONMENTAL IMPACT STUDY Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE: 3 B.1.1. OVERVIEW OF POTENTIAL ENVIRONMENTAL IMPACTS DURING THE CONSTRUCTION PHASE B.1.1.1. ON LAND The selected construction method, the suction dredging of the sea bottom between Quay 5 (existing) and Quay 7 (new), has partially reduced the environmental impact during the construction phase. Heavy traffic of trucks transporting the embanking material has fallen off, which has eliminated its harmful impact upon the immediate and remote environment. The phased and long-lasting realization, in accordance with the selected construction conception and technology, does not generate additional environmental impacts. B.1.1.2 ON THE SEA In terms of the sea dynamic the present site has already been affected by activities on the neighboring Quay 5, where the same type of ships berth. Tugboats are used to operate the entering/departing, eliminating thus probability of crash incidents or bottom disturbances caused by the propellers. Shallow and undeveloped shore at the site of the future Quay 7 causes uncontrolled inflow of swimming and floating pollutants that usually are not cleaned. The waves impact is insignificant and does not affect the capacity. Sea currents develop from the rise and fall of tide, that is, under the influence of the tides in the channel, so that the water exchange in the immediate aquatorium is practically affected only by the sea tides. The half-confined aquatorium between Quay 5 and Quay 7 is also a discharge point for the sewage system, which worsens the sea condition (current quality measurement values are enclosed). The sea tides are the key natural factor of quality conservation. Therefore, at present the site capacity is already as usual for confined harbours. The bottom inspection results revealed strong terrigenous material inflows via river stream, which sediments increasingly under conditions of diminished dynamic. Consequently, conditions for the establishment of the close-tobottom populations are worsened and this partially explains the low diversity of the registered species. Furthermore, according to some information, the port basin in the study area has been deepened. This may be substantiated by the steep bottom sections with sudden depth increases that have been registered at the beginning of both inspected transects. By dredging the sediment the surface stratum that may have been more densely populated was removed. In this case, the population of the silt sediments is expected to be recovering, which is slowed down by the aforementioned sedimentation. The enclaves of the solid bottom of anthropogenic origin on both transects are populated with numerous sciafile filtration organisms. Their presence in shallow waters confirms the constant inflow of suspended substance that RIJEKAPROJEKT d.o.o.
ENVIRONMENTAL IMPACT STUDY Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE: 4 considerably diminishes the light penetration, while the rich organic component suspension benefits the population density. The construction activities will muddle the water, in particular during the phase of deepening the aquatorium for the purpose of reaching the necessary basin depth. The increased quantities of suspended substances in the water column will be reflected on the reduced amount of the light that algae need for assimilation. Since all this occurs on the already degraded sea bottom, new activities do not degrade the existing condition. RIJEKAPROJEKT d.o.o.
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OBALA 4 OBALA 3 60 000 DWT 50 000 D
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ENVIRONMENTAL IMPACT STUDY Rn: 03-0
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A1. PURPOSE OF PROJECT CONSTRUCTION
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A1. PURPOSE OF PROJECT CONSTRUCTION
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HEIGHT OF SEA LEVEL (m) HEIGHT OF S
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IRANA PLANIRANI 50 000 DWT l=290,0m
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PLANIRANI PLANIRANA PLANIRANI OBALA
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KV 2 PLS-02 KV 1 PL-02 SOK 1 PLS-01
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