ANNEX IISPECIFIC PROVISIONS

I.Specific provisions relating to carbon tetrachloride (No 13)9CAS No 56-23-510

Heading A (13):Limit values for emission standards

Type of industrial plant1112

Type of average value

Limit values expressed as13

To be complied with as from

weight

concentration

1.

Carbon tetrachloride production by perchlorination

Monthly

a)

process involving washing: 40 g CCl4 per tonne of total production capacity of CCl4 and perchlorethylene

1,5 mg/l

1. 1. 1988

b)

process not involving washing: 2,5 g/tonne

1,5 mg/l

Daily

a)

process involving washing: 80 g/tonne

3 mg/l

b)

process not involving washing: 5 g/tonne

3 mg/l

2.

Production of chloromethanes by methane chlorination (including high-pressure electrolytic chlorine generation) and from methanol

Monthly

10 g CCl4 per tonne of total production capacity of chloromethanes

1,5 mg/l

1. 1. 1988

Daily

20 g/tonne

3 mg/l

3.

Production of chlorofluorocarbons14

Monthly

—

—

—

Daily

—

—

—

Among the industrial establishments referred to under heading A, point 3, of Annex I, reference is made in particular to plants using carbon tetrachloride as solvent.

A simplified monitoring procedure may be introduced if annual discharges do not exceed 30 kg a year.

In view of the volatility of carbon tetrachloride and in order to ensure compliance with Article 3 (6), where a process involving agitation in the open air of effluent containing carbon tetrachloride is used, the Member States shall require compliance with the limit values upstream of the plant concerned; they shall ensure that all water likely to be polluted is taken fully into account.

It is not possible at present to adopt limit values for this sector. The Council is to adopt such limit values at a later date, acting on a Commission proposal.

F1Heading B (13):Quality objectives

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heading C (13):Reference method of measurement

  1. 1.

    The reference method of measurement to be used for determining the presence of tetrachloride in effluents and water is gas chromatography.

  2. 2

    A sensitive detector must be used when concentration levels are below 0,5 mg/l and in this case the determination limit16 is 0,1 μg/l. For concentration levels higher than 0,5 mg/l a determination limit17 of 0,1 mg/l is acceptable.

  3. 2.

    The accuracy and precision of the method must be ± 50 % at a concentration which represents twice the value of the determination limit18.