Caspian Sea State of the Environment 2019
2016. Systematic work is now carried out in accor- dance with this integrated plan (Official Internet Resource of Akimat of Mangystau Region 2018). Pollution of the Caspian Sea from land- based sources in the Russian Federation Surface run-off of pollutants According to statistical data, polluted wastewater discharge into the Caspian Sea basin (referring
and “clean”. On the territory of Western Kazakh- stan Region in 2012-2014 the Ural River was rat- ed as “clean” and “moderately polluted”. It was noted that nitrites, total iron, chromium (6+) and phenols exceeded permissible values (Kazhy- dromet 2012-2017). In Kazakhstan, the Akimat of Mangystau Region developed and adopted Res- olutionNo. 249, “A regional plan for preventing and cleaning up oil spills in the Kazakhstan sector of the Caspian Sea in Mangystau Region” on 9 August
Table 4.1: Average annual flow at the upper and sea edges of the Volga delta
Head of delta
Marine fringe of delta, 1995–2004
Pollution
1977–1993
1995–2004
Total
Western part
Eastern part
Total Petroleum Hydrocarbons, thousand tonnes
71.65
54.8
57.1
37.2
19.9
5.29
6.96
7.95
4035
3.6
Detergents, thousand tonnes
0.7
0.98
1.07
0.68
0.39
Phenols, thousand tonnes
–
–
51.05
31055
19.5
Ferrrum (Fe), thousand tonnes
4.97
9.42
9.45
6.01
3.44
Zinc (Zn), thousand tonnes
2.19
1.89
1.66
1.13
0.53
Cuprum, (Cu), thousand tonnes
–
–
1.49
0.94
0.55
Nickel (Ni), thousand tonnes
–
–
439
276
163
Lead (Pb), tonnes
–
–
311
195
115
Cobalt (Co), tonnes
–
–
273
172
101
Manganese (Mn), tonnes
–
–
186
117
69
Chromium (Cr), tonnes
–
–
122
77
45
Cadmium (Cd), tonnes
–
–
15.4
9.7
5.7
Hydrargyrum (Hg), tonnes
3710 *
186
124
56
68
DDT, kg
1320 *
27
29.5
23.6
5.9
Dichlorodiphenylethylene (DDE), kg
Not detected
Not detected
Not detected
5
Alfa-hexachlorocyclohexane, kg
1026 *
115
87
27
60
Gamma-hexachlorocyclohexane, kg
*1983–1986
45
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