SCHEDULE 1Activities, installations and mobile plant

PART 1Interpretation and application: general

References to releases into water

7.

(1)

References in Part 2 of this Schedule to a substance, or to the release into water of a substance, listed in this sub-paragraph or to its release in a quantity which, in any 12-month period, is greater than the background quantity by an amount specified in this sub-paragraph are references to the following substances and amounts—

Table

Substance

Amount greater than the background quantity (in grams) in any 12-month period

Mercury and its compounds

200 (expressed as metal)

Cadmium and its compounds

1,000 (expressed as metal)

All isomers of hexachlorocyclohexane

20

All isomers of DDT

5

Pentachlorophenol and its compounds

350 (expressed as PCP)

Hexachlorobenzene

5

Hexachlorobutadiene

20

Aldrin

2

Dieldrin

2

Endrin

1

Polychlorinated Biphenyls

1

Dichlorvos

0.2

1, 2-Dichloroethane

2,000

All isomers of trichlorobenzene

75

Atrazine

3501

Simazine

3501

Tributyltin compounds

4 (expressed as TBT)

Triphenyltin compounds

4 (expressed as TPT)

Trifluralin

20

Fenitrothion

2

Azinphos-methyl

2

Malathion

2

Endosulfan

0.5

1 Where both Atrazine and Simazine are released, the figure for both substances in aggregate is 350 grams.

(2)

In sub-paragraph (1), “background quantity” means, in relation to the release of a substance resulting from an activity, such quantity of that substance as is present in—

(a)

water supplied to the site where the activity is carried on,

(b)

water abstracted for use in the activity, and

(c)

precipitation onto the site on which the activity is carried on.