Chernobyl-Born Radionuclides In Geological Environment - Groundwater Vulnerability: Chernobyl Nuclear Disaster - page 35

Chomobyl NPP

0.3

Vesniane

Chernobyl

Chystogalivka

2.0

0.4

%

Domanivka

Gornostaipil

7. 8

10.2

Oster

20

Liubymivka

Kozelets

Rudnia-Talska

2.8

Sosnivka
Dymer

12.6

15

Kalyta

Myrcha

Litochky Markivtsi

9.2

Lebedivka 8.8

4.4
Borodianka
12.0

Liutizh

St.Basan

11.4

Pukhivka
V. Dymerka

10

14.0

Khotianivka

KYIV

Pogreby 17.2

Gogoliv

Irpin

6

Brovary

21.4
Zhuliany

Makariv
Sytniaky 16.0

17.2

20.0

Senkivka

24.0
Bortnychi

Shpytky

25.2

Baryshivka

13.4

Bory spil 3

22.0

Vyshenky 20.0

11.4
Veselynivka

Khodosivka

Glevakha

Protsiv

18.6

Kozyn

0

Golovuriv
10.6 0 0 0

km

V.Guliaky
6.4

Borova Vasylkiv St.Bezradychi

11.0

Figure 2.7 Distribution of 137 Cs accumulation in the geological environment (Quaternary
and Eocene deposits, depth to 65 m) plotted as percentage of the initial surface contami-
nation by data of 2001.

Bortnychi, Brovary, and Irpin) the geological environment has accumulated more
than 20% of initial surface contamination. In wider areas around Kyiv (near
Makariv, Borodyanka, Liutizh, Pukhivka, Baryshivka, Protsiv, Kozyn, Glevakha,
and Vasylkiv) this ratio reaches 10%. Within the CEZ the ratio is below 3%
because of very high surface contamination values.
An assessment of the total accumulation of 137 Cs in the geological environ-
ment of the CEZ has been performed for the Quaternary aquifer. Sites of the
temporary locations of radioactive wastes and the Chernobyl NPP operation site
with extremely high contamination have not been taken into account. According
to existing data, three zones with different 137 Cs accumulation in the geological
environment (depth to 25-40 m) per unit area have been determined, as shown in
Figure 2.8.