HEADING PAGE - port of ploce authority * welcome

ENVIRONMENTAL IMPACT STUDY
Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE:56/1
A.3.5.2.2.1. SUPPLEMENT - WORLD BANK
The revision of the Environmental Impact Assessment for Container terminal
at the Port of Ploce made by the World Bank has asked for to supplement the
Assessment in the part referring to problems relating to deepening of the port
maritime zone on the area planned for terminal construction (between 5 th and
7 th pier). It has been asked for to supplement the Assessment as follows:
1. To estimate maximal content of contaminants based on results obtained
from analysis of excavated sediment;
2. To discuss about dredging technology and water volume estimate to be
removed together with excavated sediment and to be drained into the sea via
proposed storage reservoir. The time necessary to carry out dredging works
has to be estimated too and an optimal period for their carrying out has to be
defined;
3. To discuss about possible contaminant leaching from excavated masses
when depositing them on soil;
4. To classify sediment on spot of planned intervention in view of its disposal:
deposit in sea or deposit on land for the purpose of embankments of port
quays;
5. To show on map the area on which dredging shall take place and location
where excavated material shall be deposited. Storage reservoir –coagulation
tank for water to be drained from excavated material has to be shown on the
same map.
In terms of outlined problems the target of this study has been:
• To estimate maximal content of contaminants based on results
obtained from analysis of excavated sediment,
• To estimate possibility for contaminant leaching from excavated
masses when depositing them on soil;
• To classify material anticipated to be excavated in view of possibility of
its disposal: deposit in sea or deposit on land for the purpose of
embankments of port quays.
Work Method
Within the development framework of the Environmental Impact Assessment
for Container terminal at Ploce (Rijekaprojekt d.o.o. Rijeka, 2004), in the year
2003 the sediment surface layer (0 to 5 cm depth) has been examined on two
stations PLS 01 and PLS 02 on the area of planned intervention, shown on
the Fig. 1. The diver took a sample of the sediment by means of
polyethylene container. The sediment analysis included determination of
heavy metals (Pb, Cd, Cr, Ni, V and Zn) and organic contaminant: polycyclic
aromatic hydrocarbon (PAH) and polychlorinated biphenyls (PCB).
For the purpose of better assessment of sediment characteristics and
contaminant content, a sample of sediment has been taken on the previous
stations (PLS01 and PLS02) once again. By this occasion, the diver took the
sample by corer : on the station PLS01 up to depth of 60 cm and on the
station PLS02 up to depth of 40 cm.
Physical and chemical properties has determined done by the
HIDRO.LAB.d.o.o Rijeka on following samples:
RIJEKAPROJEKT d.o.o.