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ENVIRONMENTAL IMPACT STUDY
Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE:57
A.3.5.2.3. EXISTING POLLUTION SOURCES IN THE PROJECT AREA
In the area of the Project the main pollution sources are sewage waters and
activities in the port.
SEWAGE WATERS
Waste waters from the main sewer of the town Ploce sewage system are let
without treatment into the sea, by coastal outlet situated beside the bulk
freight ramp base. According to investigations carried out by the Public Health
Institute of the County Splitsko – Dalmatinska in 2002, properties of these
waters were as follows: pH 6.61 – 8,46, suspended matter 18 – 142 mg/L,
KPK 63 - 300 mg/L, BPK5 22 - 260 mg/L, ammonium 14 - 115 mg/L,
faecal coliforma 2E +08 - 3 E + 10. It is evident that these are characteristic
sewage waters containing important amount of suspended matter, dissolved
organic matter and nutritious salts, as well as micro-organisms of which many
represent potential hazard for human health. Such loading rates, along with
low sea streams are the main factors influencing sedimentation of suspended
matter and the increase of nutritious matter amount within the port
aquatorium, which, in conditions of increased temperature and proper
illumination of the water column, may lead to an accelerated overgrowing or a
mass development of algae. In some parts of the port total disappearance of
oxygen may occur, as well as development of anaerobic process of
decomposition of organic matter, whose final products have a very unpleasant
odour and unfavourable biological impact.
THE PLOCE PORT
In the Ploce port, basic port activities take place: mooring of vessels,
transhipment of goods from ships to open and closed storages, and reloading
to transport means ship - railway – lorries. In this port transhipment of general,
mass bulk freight and liquid freight is carried out.
Sea pollution in ports is mainly the consequence of sea pollution from ships,
and load handling, its loading, unloading, reloading and storage. The greatest
problem of pollution is the consequence of unexpected occurrences –
incidents. In regular working conditions the pollution degree depends on the
method of handling and storing, on handling area layout and its drainage
system. The port equipment and its maintenance also represent a danger for
sea pollution due to contamination of handling surfaces by oil, and due to
waste waters and other waste from garages and workshops for the equipment
maintenance
According to data furnished by the Ploce Harbour Master's Office, in several
preceding years there was no sea pollution from ships.
According to data furnished by the Marine Service of the port Ploce, in May
2002 contamination by oil in the port aqatorium by the Shore No. 5 was
registered. The pollution was of minor extent.
The storage and handling areas of the bulk freight terminal (coal) dispose of a
system for precipitation water collection; before its letting into the sea the
rainwater is treated in sedimentation chambers – fat separators. Quality of
these waters was not examined.
RIJEKAPROJEKT d.o.o.