The Estonian Police and Border Guard Board will mark the border zone area of the Estonian-Russian border on the Narva Reservoir with approximately 40 new spar buoys this summer.
"This summer, the Police and Border Guard Board is planning to mark the border regime area on the Narva Reservoir with approximately 40 new spar buoys," Helen Neider-Veerme, head of the office for integrated administration of the border at the Estonian Police and Border Guard Board, informed.
Oil shale processing for energy production in Eesti and Balti power plants uses surface water from the surrounding water bodies (the Mustajogi and Narva rivers and the Narva Reservoir) for cooling / heat carrying in the combustion process of thermal power plants (TPPs).
In addition, the water from the Mustajogi River and also water from the Narva Reservoir is used as cooling water in the Eesti Power Plant so that all the water from the Mustajogi River flows through Eesti PP .
However, clear dissimilarity between the studied metal concentrations in different layers of sediments were seen for sampling sites 11 and 15 (the Narva River and the Narva Reservoir, respectively), showing that content of heavy metals in the upper layer is higher than in the bottom layer for sample 11 and vice versa for the sample 15.
Bioavailability evaluation of As and selected heavy metals (Cd/Zn/Pb, Cr) in sediments with recombinant metal-specific sensor bacteria detected bioavailable As in two sediment samples out of 21: 0.16 [+ or -] 0.03 mg [As.sup.3+]/kg dwt (0.07 [+ or -] 0.004 mg[As.sup.5+]/kg) in sample 15 (the Narva Reservoir) and 0.26 [+ or -] 0.12 mg [As.sup.3+]/kg (0.1 [+ or -] 0.04 mg[As.sup.5+]/kg) in sample 17 (the town of Narva) (Fig.
There has been no regular hydrobiological monitoring up to now, except in the Narva Reservoir where it has been carried out since 2001.
Since 1956 the river has been dammed by the Narva Reservoir, which extends up to 38 km upstream (total surface area 200 [km.sup.2]; mean depth 1.8 m, maximum depth 15 m).
The impact of the Narva Reservoir on riverine phytoplankton was rather weak because of the rapid turnover in the reservoir, 3435 times a year (Mistsuk & Jaani, 2000).
Monitoring expedition to the Narva Reservoir
, Tartu, 2000.
RIA Novosti has reported that Russian authorities plan on destroying an island drifting in Estonian waters over threat to a Russian hydroelectric plant on the Narva Reservoir
. A four-hectare tract of land that was part of Russian territory split off in June and floated over the border before getting stuck near high-voltage lines.