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Environmental measurement report

COMURHEX Malvési site natural uranium storage facility

The tables show the findings from environmental measurements on the COMURHEX Malvési site for the period indicated.

Evolution of the rejections in the water of the Tauran Canal

Elements Limits 20092010
Fluorine

mg/L

Kg/jour

5

5

8.8

4.1

0.4

0.4

Ammonium (NH1)

mg/L

Kg/jour

-

230

14.2

7.3

5

3

Uranium (U)

mg/L

Kg/jour

0.8

10*

0.096

0.057

0.09

0.097

Nitrate (NO3)

mg/L

Kg/jour

-

375

103

63

130

67

Chemical oxygen demand 1

mg/L

Kg/jour

125

1875

<39.2**

19.1

<22

17

Suspension material 2

mg/L

Kg/jour

30

450

21.5

8.9

<4

3

These results are based on concentrations measured on the work areas located at the Back-end of the site.

* Daily limit value completed by an annual limit fixed to 131 kg.

** Average calculated on daily values which are often below the limits of detection.

1 Quantity of oxygen necessary for the chemical natural degradation of the oxidizible materials contained in an aqueous effluent.

2  Not dissolved products transported by liquid in movement

Evolution of the not radioactive rejections in the air

Element (Kg/jour)20092010
Nitrogen Oxide (NOx)679761
Ammonia (NH3) 154144
Dusts1616
Fluorides10.3

The quantities of nitrogen oxides and fluorides remain relatively constant.

We notice on the other hand a decrease of the ammonia, linked to the change of process of treatment.

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