Uurimistöö eesmärgiks oli hinnata Paldiski Lounasadama süvendustööde keskkonnamojusid. Analüüsiti lokaalset lainetuse rezhiimi, merevee optilisi omadusi ja selle muutusi seoses süvendustöödega, holjumi kontsentratsiooni mere pinnakihis, hoovuste rezhiimi ja holjumi levikut hoovustega, merepohja taimestiku ja loomastiku kooslusi ning süvendustööde voimalikku moju neile. Hinnati kalastiku seisundit ja süvendustööde voimalikku moju kalastikule. Formuleeriti süvendustöödega kaasnevad pohilised keskkonnariskid. Leiti, et süvendustööd on lubatud läbi viia järgides teatavaid soovitusi ja piiranguid. Fikseeriti merekeskkonna seire komponendid tööde teostamise perioodil.
The goal of the studies was to estimate environmental impact of dredging operations in the Paldiski South Harbour. For this purpose a number of marine processes was analysed: local wave regime, optical properties of sea water and their possible changes due to dredging, concentration of suspended matter in the surface layer, current field and current-induced propagation of suspended matter, sea bottom flora and fauna, influence of dredging. Analysis of fisheries in the bay and the probable impact from dredging to the fish stock was performed. Main environmental risks of dredging were formulated. It was decided that the permission for the dredging operations may be granted provided certain recommendations and restrictions are followed. The main parts of the monitoring programme during the dredging work were formulated.