**Case C-538/09**

**European Commission**

**v**

**Kingdom of Belgium**

(Failure of a Member State to fulfil obligations – Environment – Directive 92/43/EEC – Article 6(3) – Special areas of conservation – Appropriate assessment of the implications of a plan or project which is likely to have a significant effect on a protected
site – Exemption from assessment of plans or projects which are subject to a declaratory scheme – Incorrect transposition)

Summary of the Judgment

1.        *Environment – Conservation of natural habitats and of wild fauna and flora – Directive 92/43 – Special areas of conservation
– Obligations of the Member States*

*(Council Directive 92/43, Art. 6(3))*

2.        *Environment – Conservation of natural habitats and of wild fauna and flora – Directive 92/43 – Special areas of conservation
– Obligations of the Member States*

*(Council Directive 92/43, Art. 6(3))*

3.        *Environment – Conservation of natural habitats and of wild fauna and flora – Directive 92/43 – Special areas of conservation
– Obligations of the Member States*

*(Council Directive 92/43, Art. 6(3))*

1.        Article 6(3) of Directive 92/43, on the conservation of natural habitats and of wild fauna and flora, makes the requirement
for an appropriate assessment of the implications of a plan or project conditional on there being a probability or a risk
that it will have a significant effect on the site concerned. In the light, in particular, of the precautionary principle,
such a risk exists if it cannot be excluded on the basis of objective information that the plan or project will have a significant
effect on the site concerned.

The assessment of that risk must be made in the light inter alia of the characteristics and specific environmental conditions
of the site concerned by such a plan or project.

(see paras 39-40)

2.        The condition governing the need to undertake an assessment of the implications of a plan or a project on a particular site,
in accordance with which such an assessment must be carried out where there are doubts as to the existence of significant
effects, does not permit that assessment to be avoided, in respect of certain categories of projects, on the basis of criteria
which do not adequately ensure that those projects are not likely to have a significant effect on the protected sites.

The option of generally exempting certain activities, in accordance with the rules in force in a Member State, from the need
for an assessment of the implications for the site concerned is not such as to guarantee that those activities do not adversely
affect the integrity of the protected site.

Thus, Article 6(3) of Directive 92/43, on the conservation of natural habitats and of wild fauna and flora, does not authorise
a Member State to enact national legislation which allows the environmental impact assessment obligation for a development
plan to benefit from a general waiver because of the low costs entailed or the particular type of work planned. Similarly,
by systematically exempting works and development programmes and projects which are subject to a declaratory scheme from the
procedure for assessing their implications for a site, a Member State fails to fulfil its obligations under Article 6(3) of
Directive 92/43.

(see paras 41-44)

3.        When a Member State introduces a declaratory scheme, under which there is accordingly no provision for a risk assessment depending
inter alia on the characteristics and specific environmental conditions of the site concerned, that Member State must show
that the provisions which it has adopted enable it to be excluded, on the basis of objective information, that any plan or
project subject to that declaratory scheme will have a significant effect on a Natura 2000 site, whether individually or in
combination with other plans or projects.

It can be inferred from Article 6(3) of Directive 92/43, on the conservation of natural habitats and of wild fauna and flora,
that competent national authorities may refrain from carrying out an impact assessment of any plan or project which is not
directly connected with, or necessary to, the management of a Natura 2000 site only where it can be excluded, on the basis
of objective information, that that plan or project will have a significant effect, whether individually or in combination
with other plans or projects.

(see paras 52-53)


JUDGMENT OF THE COURT (First Chamber)

26 May 2011 \*([1](#Footnote1))

(Failure of a Member State to fulfil obligations – Environment –Directive 92/43/EEC – Article 6(3) – Special areas of conservation – Appropriate assessment of the implications of a plan or project which is likely to have a significant effect on a protected
site – Exemption from assessment of plans or projects which are subject to a declaratory scheme – Incorrect transposition)

In Case C‐538/09,

ACTION for failure to fulfil obligations under Article 258 TFEU, brought on 21 December 2009,

**European Commission,** represented by D. Recchia and A. Marghelis, acting as Agents, with an address for service in Luxembourg,

applicant,

v

**Kingdom of Belgium,** represented by T. Materne, acting as Agent,

defendant,

THE COURT (First Chamber),

composed of A. Tizzano, President of the Chamber, M. Ilešič, E. Levits, M. Safjan (Rapporteur) and M. Berger, Judges,

Advocate General: J. Kokott,

Registrar: A. Calot Escobar,

having regard to the written procedure,

having decided, after hearing the Advocate General, to proceed to judgment without an Opinion,

gives the following

**Judgment**

1        By its application, the European Commission claims that the Court should declare that, by not requiring an appropriate environmental
impact assessment to be undertaken for certain activities, where those activities are likely to have an effect on a Natura
2000 site, and by making certain activities subject to a declaratory scheme, the Kingdom of Belgium has failed to fulfil its
obligations under Article 6(3) of Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of
wild fauna and flora (OJ 1992 L 206, p. 7; ‘the Habitats Directive’).

**Legal context**

*European Union legislation*

2        Under Article 2(1) of the Habitats Directive, the aim of that directive is to contribute towards ensuring biodiversity through
the conservation of natural habitats and of wild fauna and flora in the European territory of the Member States to which the
Treaty on the Functioning of the European Union applies.

3        Article 3(1) of the Habitats Directive provides:

‘A coherent European ecological network of special areas of conservation shall be set up under the title Natura 2000. This
network, composed of sites hosting the natural habitat types listed in Annex I and habitats of the species listed in Annex II,
shall enable the natural habitat types and the species’ habitats concerned to be maintained or, where appropriate, restored
at a favourable conservation status in their natural range.

...’

4        Article 4 of the Habitats Directive governs the procedure for establishing the Natura 2000 network and for the designation
of special areas of conservation by the Member States.

5        Paragraphs 2 and 3 of Article 6 of the Habitats Directive, which lays down the conservation measures for those areas, provide:

‘2.      Member States shall take appropriate steps to avoid, in the special areas of conservation, the deterioration of natural habitats
and the habitats of species as well as disturbance of the species for which the areas have been designated, in so far as such
disturbance could be significant in relation to the objectives of this Directive.

3.      Any plan or project not directly connected with or necessary to the management of the site but likely to have a significant
effect thereon, either individually or in combination with other plans or projects, shall be subject to appropriate assessment
of its implications for the site in view of the site’s conservation objectives. In the light of the conclusions of the assessment
of the implications for the site and subject to the provisions of paragraph 4, the competent national authorities shall agree
to the plan or project only after having ascertained that it will not adversely affect the integrity of the site concerned
and, if appropriate, after having obtained the opinion of the general public.’

*National legislation*

6        Article 28(2) of the Law of 12 July 1973 on nature conservation (*Moniteur belge* of 11 September 1973, p. 10306), as amended by the Decree of the Walloon Region of 22 May 2008 (*Moniteur belge* of 17 June 2008, p. 31074; ‘the Law on nature conservation’), provides:

‘The general prohibitions applicable on Natura 2000 sites, or, in certain cases, outside those sites, shall be laid down by
the Government, as shall all other general preventive measures to be taken on the sites, or, in certain cases, outside the
sites, in order to prevent the deterioration of natural habitats and significant disturbances, affecting the species for which
the site has been designated.’

7        Article 29(2) of the Law on nature conservation provides:

‘Any plan or project for which authorisation is required and which, in the light of the regulatory provisions of an order
designating a Natura 2000 site, is not directly connected with the management of the site or necessary for that purpose, but
is likely to have a significant effect on that site, whether individually or in combination with other plans or projects,
shall undergo an impact assessment, as provided for in the legislation making arrangements for environmental impact assessments
in the Walloon Region, in the light of the site conservation objectives and in accordance with the detailed rules laid down
by the Government.

...’

8        Article 3 of the Decree of the Walloon Region of 11 March 1999 concerning environment permits (*Moniteur belge* of 8 June 1999, p. 21114) in the version applicable to the present dispute (‘the Decree of 11 March 1999’), provides:

‘Installations and activities shall be classified under headings and divided into three Classes (Classes 1, 2 and 3), reflecting
in reverse order the significance of their impact on humans and on the environment and their suitability to be accommodated
within a framework defined by general, sectoral or comprehensive conditions.

Class 3 shall cover installations and activities with a low impact on humans and on the environment, for which the Government
has laid down comprehensive conditions.

...

The Government may lay down criteria to enable the declarant to decide whether a planned Class 3 establishment is able to
comply with the comprehensive conditions. If it is deemed unable to do so, the planned establishment shall be transferred
to Class 2 and the declarant shall submit an application for a Class 2 environment permit. In such cases, the Government shall
specify the information to be included with the application for an environment permit.’

9        Article 10(1) of the Decree of 11 March 1999 provides:

‘No Class 1 or Class 2 establishment may be operated without an environment permit.

...’

10      Article 11(1) of that decree provides:

‘No Class 3 establishment may be operated unless a prior declaration has been made.

...’

11      Under Article 13 of that decree:

‘The local authority in whose territory the planned establishment is to be located shall be the competent authority for the
purposes of handling declarations and applications for environment permits.

...’

12      Article 2(1) of the Order of the Walloon Government of 4 July 2002 adopting the list of projects requiring an environment
impact assessment and of classified installations and activities (*Moniteur belge* of 21 September 2002, p. 42502), in the version applicable in the present case (‘the Order of 4 July 2002’), states:

‘Annex I to this Order lists the projects for which an environmental impact assessment is required and the classified installations
and activities.’

13      Annex I to the Order of 4 July 2002 lists a number of projects, installations or activities for which an environmental impact
assessment is not compulsory, including the following projects, installations or activities to which the Commission makes
specific reference in its application initiating proceedings:

–        any building or other form of built accommodation not falling within heading 01.20.01.01 capable of housing between 4 and
500 animals in connection with rearing or fattening, in the agricultural sector, of bovine animals aged 6 months or older,
falling within heading 01.20.01.02.01;

–        storage in bulk or in a silo of cereals, grain and other products intended for animal feed, but not straw and hay, with a
capacity exceeding 50 m3, falling within heading 01.49.01.01;

–        installations for distributing liquid hydrocarbon fuel with a flashpoint of 55°C or over, but equal to or below 100°C, for
motor vehicles, for commercial purposes other than public sale, such as the distribution of hydrocarbon fuel intended for
use in a fleet of vehicles which is separately managed or own-account managed, comprising a maximum of two fuel dispensers,
provided that the storage capacity of the hydrocarbon fuel depot is 3 000 litres or more but less than 25 000 litres, falling
within heading 50.50.01; and

–        an individual water treatment unit of 20 population equivalent or less, falling within heading 90.11.

**Background to the case and pre-litigation procedure**

14      During the course of 2006, the Commission received a complaint alleging the unauthorised operation of an industrial-scale
cattle shed located within the territory of the commune of Philippeville in the Walloon Region (Belgium), which borders on
the ‘Bassin de Fagnard de l’Eau blanche en aval de Mariembourg’, a Natura 2000 site designated as a special area of conservation.

15      The complaint described the serious deterioration of that Natura 2000 site as a result of the effluent discharged from the
cattle shed, which – the complainant alleged – threatened a number of the species listed in the Annex to Council Directive
79/409/EEC of 2 April 1979 on the conservation of wild birds (OJ 1979 L 103, p. 1) and in the Annex to the Habitats Directive.

16      By letter of 23 August 2006, the Commission called on the Kingdom of Belgium to submit its comments regarding compliance with
the requirements laid down in Article 6(2) of the Habitats Directive.

17      In the light of the reply from the Kingdom of Belgium, the Commission formed the view that the Belgian legislation did not
in fact comply with the requirements laid down in Article 6(3) of the Habitats Directive, since it did not make an environmental
impact assessment compulsory and made certain activities likely to affect a Natura 2000 site subject to a declaratory scheme.

18      After giving the Kingdom of Belgium formal notice on 23 March 2007 to submit its observations, the Commission issued a reasoned
opinion on 6 May 2008 calling on that Member State to take the measures necessary to comply with that opinion within two months
of its receipt.

19      The Kingdom of Belgium responded to the reasoned opinion on 11 July 2008, stating that the agricultural holding originally
called in question had since been equipped with a waste-water treatment plant and that there was no longer any discharge to
the Natura 2000 site concerned. The Kingdom of Belgium added that the Law on nature conservation now contained an Article
28(2) – the terms of which are set out in paragraph 6 above – and that an order designed to ensure the implementation of that
provision was in the process of final adoption.

20      Following a ‘package meeting’ on 17 March 2009 between the Kingdom of Belgium and the Commission, the Kingdom of Belgium supplemented
its response to the reasoned opinion on 5 May 2009 with information on the laws and regulations adopted by the Walloon Region
with a view to preventing any risk of damage to the environment.

21      On the view that those provisions do not suffice to ensure the systematic assessment of the implications for the protected
site, as required under Article 6(3) of the Habitats Directive, the Commission brought the present action.

**The action**

*Arguments of the parties*

22      The Commission maintains that, under Article 6(3) of the Habitats Directive, the national authorities may not agree to a plan
or project until they have undertaken an assessment of its environmental implications, which must highlight the actual or
potential impact of the plan or project on the protected site.

23      Where the criteria for exempting a category of plans or projects are not sufficient to ensure with certainty that the plans
or projects concerned will not have any significant adverse effects as regards the integrity of the protected site, such an
assessment should, the Commission argues, take place systematically.

24      In the present case, it is clear from Article 29(1) of the Law on nature conservation that, in the case of plans or projects
which do not require an environment permit, such as the categories of plans and projects which merely require a declaration
to be made to the local authority, there is no need for an assessment of their environmental implications.

25      However, that exception from the obligation to carry out such an assessment for plans and projects subject to a declaratory
scheme is not based on an objective criterion. It is always possible that activities taking place below the thresholds laid
down by the Order of 4 July 2002 may also have a significant impact on the site concerned.

26      In that regard, the Commission refers to the activities and installations referred to in paragraph 13 above and states that
a holding of 500 bovine animals may, owing to the consequent discharge of effluent, have implications for a particular site,
even though that discharge would have no effect on another site.

27      In its reply, the Commission adds – with regard to the argument concerning the possibility of transferring establishments
from Class 3 to Class 2 – that the fifth paragraph of Article 3 of the Decree of 11 March 1999 places that responsibility
on the declarant, whereas, under Article 6(3) of the Habitats Directive, it is for the competent national authorities to establish,
by means of an appropriate assessment, that plans and projects will not adversely affect the integrity of the site concerned.
Moreover, it is clear from the fifth paragraph of Article 3 of that decree that transfer from Class 3 to Class 2 is linked
to the impossibility of complying with comprehensive conditions, and not to the risk posed to a Natura 2000 site.

28      Furthermore, the Commission argues, the general prohibitions referred to in Article 28(2) of the Law on nature conservation
relate to Article 6(2) of the Habitats Directive, which does not concern the obligation to carry out an assessment of the
implications for the site of a new project. Consequently, in the view of the Commission, Article 28(2) of that law does not
adequately transpose Article 6(3) of the Habitats Directive into national law.

29      The Kingdom of Belgium contends that the inspections carried out by the Belgian authorities have not disclosed that the cattle
shed to which the complaint relates has any negative implications for the Natura 2000 site known as the ‘Bassin de Fagnard
de l’Eau blanche en aval de Mariembourg’.

30      More generally, according to the Kingdom of Belgium, it is clear from Article 3 of the Decree of 11 March 1999 that Class
3 – establishments in which are subject to a declaratory scheme – covers by definition installations and activities which
have a low impact on humans and on the environment.

31      Moreover, in order to operate a Class 3 installation or carry on a Class 3 activity, it is necessary to comply with the Environment
Code and the comprehensive conditions laid down for each sector of activity. Those comprehensive conditions are designed to
reduce the impact on the environment and to prevent damage to Natura 2000 sites.

32      The Kingdom of Belgium adds that, when drawing up the list of classified activities and installations, the Walloon Region
carried out a study of activities likely to have effects on the environment, taking into account the criteria laid down in
Annex III to Council Directive 85/337/EEC of 27 June 1985 on the assessment of the effects of certain public and private projects
on the environment (OJ 1985 L 175, p. 40).

33      In order to mitigate any risk of environmental damage arising from an unpredictable situation, the Decree of 11 March 1999
also makes it possible for a Class 3 establishment to be transferred to another class where it is unable to comply with the
comprehensive conditions applicable to it. In such cases, the declarant must submit an application for a Class 2 environment
permit. In those circumstances, the competent authority would then, on the basis of the information provided in the permit
application, be in a position to decide whether it was necessary to assess the implications of the establishment for the Natura
2000 site concerned.

34      According to the Kingdom of Belgium, Article 28 of the Law on nature conservation constitutes the last layer of protection.
Article 28(1) provides that all operators are bound by the general prohibition, under which it is forbidden to cause damage
to natural habitats or to disturb the species for which the Natura 2000 sites were designated. Article 28(2) enables the Government
to impose general measures on all activities that are likely to have implications for Natura 2000 sites. That provision was
implemented by the Order of the Walloon Government of 23 October 2008 introducing general preventive measures applicable to
Natura 2000 sites (*Moniteur belge* of 27 November 2008, p. 62636) and by the Order of the Walloon Government of 23 October 2008 laying down certain detailed
rules under the preventive arrangements applicable to Natura 2000 sites (*Moniteur belge* of 27 November 2008, p. 62644).

35      If all those layers of provisions, which provide effective protection for Natura 2000 sites, were to prove inadequate, it
would still be open to the Walloon Government to issue general protective measures applicable outside Natura 2000 sites to
supplement those concerning the sites themselves.

36      In its rejoinder, the Kingdom of Belgium states that the only circumstances in which Article 6(3) of the Habitats Directive
is not applicable is where there is no possibility of any significant effect on special areas of conservation. As it is, the
Belgian authorities have acted consistently with that approach by means of Article 3 of the Decree of 11 March 1999.

37      As regards the possibility for establishments to be transferred from Class 3 to Class 2, the Kingdom of Belgium contends that
the Commission’s interpretation is incorrect, since, in determining whether the establishment concerned is of a kind requiring
an environment permit rather than a declaration, the declarant must base its decision on criteria laid down by the Walloon
Government. As for the argument that such a transfer depends on whether the comprehensive conditions have been complied with,
the Kingdom of Belgium states that, in the light of the Belgian legislation, a Class 3 establishment which complies with the
comprehensive conditions applying to it will have little or no effect on human health or the environment.

38      Thus, the Kingdom of Belgium maintains that it has correctly transposed Article 6(3) of the Habitats Directive into national
law by establishing an appropriate system for assessing the implications of all activities which may have negative implications
for a protected site.

*Findings of the Court*

39      It is settled law that Article 6(3) of the Habitats Directive makes the requirement for an appropriate assessment of the implications
of a plan or project conditional on there being a probability or a risk that the plan or project in question will have a significant
effect on the site concerned. In the light, in particular, of the precautionary principle, such a risk exists if it cannot
be excluded on the basis of objective information that the plan or project will have a significant effect on the site concerned
(see Case C‐127/02 *Waddenvereniging and Vogelbeschermingsvereniging* [2004] ECR I‐7405, paragraphs 43 and 44; Case C‐6/04 *Commission* v *United Kingdom* [2005] ECR I-9017, paragraph 54; and Case C‐418/04 *Commission* v *Ireland* [2007] ECR I‐10947, paragraph 226).

40      That risk must be assessed in the light, inter alia, of the characteristics and specific environmental conditions of the site
concerned by that plan or project (see *Waddenvereniging and Vogelbeschermingsvereniging*, paragraph 49, and Case C‐179/06 *Commission* v *Italy* [2007] ECR I‐8131, paragraph 35).

41      Moreover, the condition governing the need to undertake an assessment of the implications of a plan or a project on a particular
site, in accordance with which such an assessment must be carried out where there are doubts as to the existence of significant
effects, does not permit that assessment to be avoided, in respect of certain categories of projects, on the basis of criteria
which do not adequately ensure that those projects are not likely to have a significant effect on the protected sites (see,
to that effect, Case C‐98/03 *Commission* v *Germany* [2006] ECR I‐53, paragraph 41).

42      The option of generally exempting certain activities, in accordance with the rules in force, from the need for an assessment
of the implications for the site concerned is not such as to guarantee that those activities do not adversely affect the integrity
of the protected site (see, to that effect, *Commission* v *Germany*, paragraphs 43 and 44, and Case C‐241/08 *Commission* v *France* [2010] ECR I-0000, paragraph 31).

43      Thus, Article 6(3) of the Habitats Directive does not authorise a Member State to enact national legislation which allows
the environmental impact assessment obligation for development plans to benefit from a general waiver because of the low costs
entailed or the particular type of work planned (see, to that effect, Case C‐256/98 *Commission* v *France* [2000] ECR I‐2487, paragraph 39).

44      Similarly, by systematically exempting works and development programmes and projects which are subject to a declaratory scheme
from the procedure for assessing their implications for the site, a Member State fails to fulfil its obligations under Article
6(3) of the Habitats Directive (see, to that effect, Case C-241/08 *Commission* v *France*, paragraph 62).

45      It is therefore clear from the case-law of the Court that, in principle, pursuant to Article 6(3) of the Habitats Directive,
a Member State may not, on the basis of the sphere of activity concerned or by introducing a declaratory scheme, systematically
and generally exempt certain categories of plans or projects from the obligation requiring an assessment to be undertaken
of their implications for Natura 2000 sites.

46      It is in the light of those considerations that it is necessary, in the present case, to consider whether the provisions adopted
by the Kingdom of Belgium are in conformity with Article 6(3) of the Habitats Directive.

47      In that regard, it should be noted that Article 29(2) of the Law on nature conservation provides that any plan or project
requiring a permit and which is likely to have a significant effect on a Natura 2000 site, whether individually or in combination
with other plans or projects, must undergo an impact assessment as provided for under the legislation laying down arrangements
for environmental impact assessments in the Walloon Region.

48      At the same time, the Decree of 11 March 1999 states that Class 3 installations and activities need only be the subject of
a prior declaration to the local authority in whose territory the planned establishment is to be located.

49      The Commission infers from those provisions, read together, that Class 3 installations and activities do not require a permit
and that, accordingly, they are not liable to be the subject of an assessment of their implications for a Natura 2000 site,
a point which is not disputed by the Kingdom of Belgium.

50      In that regard, the Commission refers to Annex I to the Order of 4 July 2002, which lists those projects, installations or
activities – the Class 3 activities referred to in paragraph 13 above – for which an environmental impact assessment is not
compulsory.

51      Consequently, the Kingdom of Belgium has established a declaratory scheme which exempts certain activities and installations,
on a general basis, from the obligation requiring their implications for a Natura 2000 site to be assessed. The Kingdom of
Belgium thus presumes that plans or projects subject to that declaratory scheme are not likely to have a significant effect
on a protected site.

52      In such circumstances, where a Member State introduces a declaratory scheme, under which there is accordingly no provision
for a risk assessment depending inter alia on the characteristics and specific environmental conditions of the site concerned,
that Member State must show that the provisions which it has adopted enable it to be excluded, on the basis of objective information,
that any plan or project subject to that declaratory scheme will have a significant effect on a Natura 2000 site, whether
individually or in combination with other plans or projects (see, to that effect and by analogy, Case C-241/08 *Commission* v *France*, paragraph 32).

53      It can be inferred from Article 6(3) of the Habitats Directive that competent national authorities may refrain from carrying
out an impact assessment of any plan or project which is not directly connected with, or necessary to, the management of a
Natura 2000 site only where it can be excluded, on the basis of objective information, that that plan or project will have
a significant effect on that site, whether individually or in combination with other plans or projects (see, to that effect,
*Waddenvereniging and Vogelbeschermingsvereniging*, paragraph 45, and *Commission* v *Ireland*, paragraph 238).

54      In that regard, first, the Kingdom of Belgium refers to Article 3 of the Decree of 11 March 1999, which states that the declaratory
scheme applies only to installations and activities with a low impact on humans and on the environment, for which the Belgian
Government has laid down comprehensive conditions.

55      It should be borne in mind, however, that even a small-scale project can have significant effects on the environment if it
is in a location where the environmental factors, such as fauna and flora, soil, water, climate or cultural heritage, are
sensitive to the slightest alteration (see, to that effect, with regard to Directive 85/337, Case C‐392/96 *Commission* v *Ireland* [1999] ECR I‐5901, paragraph 66).

56      It follows that a Member State cannot assume that categories of plans or projects defined by reference to spheres of activity
and special installations will, by definition, have a low impact on humans and on the environment.

57      Secondly, the Kingdom of Belgium states that, when the Walloon Region drew up the list of classified activities and installations,
it carried out an assessment of activities likely to have effects on the environment, taking into account the criteria laid
down in Annex III to Directive 85/337.

58      It should be noted, however, that the Kingdom of Belgium has not produced that assessment. In any event, as the Commission
points out, it is not possible, in particular – contrary to the requirement under Article 6(3) of the Habitats Directive –
to predict, in principle, on the basis of such an assessment the possible effects of a plan or project, in combination with
other plans or projects, on a particular site.

59      Thirdly, the Kingdom of Belgium maintains that, in accordance with the Decree of 11 March 1999, where a planned Class 3 establishment
is unable to comply with the comprehensive conditions applying to it, it is transferred to Class 2. On the basis of the information
provided by the declarant in the application for a Class 2 environment permit, the competent authority may then decide to
require an assessment of the implications of the establishment for the Natura 2000 site concerned in the light of the conservation
objectives for that site.

60      However, the Kingdom of Belgium has not produced either the provisions of the comprehensive conditions relating to the installations
and activities to which the Commission refers or the criteria enabling the declarant to determine whether the planned Class
3 establishment is able to comply with those comprehensive conditions. Nor does the Kingdom of Belgium explain how, specifically,
those provisions offset the lack of an appropriate assessment of the implications of plans or projects that are likely to
have a significant effect on the protected site.

61      Fourthly, the Kingdom of Belgium relies on the provisions for implementing Article 28(2) of the Law on nature conservation,
which – it asserts – provide effective protection in any event for Natura 2000 sites in the Walloon Region.

62      None the less, that Member State does no more than give the references for the two orders of the Walloon Government of 23
October 2008, referred to in paragraph 34 above, without examining their content or explaining the reasons why, in its submission,
those orders are adequate for ensuring the transposition into national law of Article 6(3) of the Habitats Directive.

63      Fifthly, the Kingdom of Belgium also mentions the obligation to comply with the Environment Code, although it does not state
specifically how the provisions of that code, read in conjunction with the general conditions, are capable of protecting the
environment.

64      It is clear from the foregoing that the Kingdom of Belgium has not provided evidence enabling the Court to determine whether
the provisions which that Member State has adopted allow it to be excluded, on the basis of objective information, that any
plan or project subject to that declaratory scheme will have a significant effect on a Natura 2000 site, whether individually
or in combination with other plans or projects.

65      In those circumstances, the Commission’s action must be regarded as well founded.

66      In the light of the foregoing considerations, it must be held that, by not requiring an appropriate environmental impact assessment
to be undertaken for certain activities, subject to a declaratory scheme, when those activities are likely to have an effect
on a Natura 2000 site, the Kingdom of Belgium has failed to fulfil its obligations under Article 6(3) of the Habitats Directive.

**Costs**

67      Under Article 69(2) of the Rules of Procedure, the unsuccessful party is to be ordered to pay the costs if they have been
applied for in the successful party’s pleadings. Since the Commission has applied for costs and the Kingdom of Belgium has
been unsuccessful, the latter must be ordered to pay the costs.

On those grounds, the Court (First Chamber) hereby:

1.      **Declares that, by not requiring an appropriate environmental impact assessment to be undertaken for certain activities, subject
to a declaratory scheme, where those activities are likely to have an effect on a Natura 2000 site, the Kingdom of Belgium
has failed to fulfil its obligations under Article 6(3) of Council Directive 92/43/EEC of 21 May 1992 on the conservation
of natural habitats and of wild fauna and flora;**

2.      **Orders the Kingdom of Belgium to pay the costs.**

[Signatures]

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[1](#Footref1) Language of the case: French.