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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