Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Petroglyphs of Lake Onega and the White Sea' has mentioned 'Pollution' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Whereas the area of the lake used to be clean, the pollution level is gradually increasing, especially in the northwestern and northern parts which contain the industrial facilities of Petrozavodsk, Kondopoga and Medvezhyegorsk. | WIKI |
| The pollution from these three cities amount to about 190xc2xa0million cubic metres (6.7xc2xa0billion cubic feet) of sewage and drainage water and 150 tonnes (170 short tons) of emissions per year. | WIKI |
| Ships and motor boats (about 8,000 units) bring oil pollution at the level of about 830 tonnes (910 tons) per navigation year, as well as phenols (500xc2xa0kgxc2xa0[1,100xc2xa0lb]), lead (100xc2xa0kgxc2xa0[220xc2xa0lb]) and oxides of sulfur, nitrogen, and carbon. | WIKI |