CONVENTION ON ENVIRONMENTAL IMPACT ASSESSMENT 
                 IN A TRANSBOUNDARY CONTEXT (1991) 

The Parties to this Convention, 

Aware of the interrelationship between economic activities and their 
environmental Consequences, 

Affirming the need to ensure environmentally sound and sustainable 
development, 

Determined to enhance international co-operation in assessing environmental 
impact in particular in a transboundary context, 

Mindful of the need and importance to develop anticipatory policies and of 
preventing, mitigating and monitoring significant adverse environmental 
impact in general and more specifically in a transboundary context, 

Recalling the relevant provisions of the Charter of the United Nations, the 
Declaration of the Stockholm Conference on the Human Environment, the Final 
Act of the Conference on Security and Co-operation in Europe (CSCE) and the 
Concluding Documents of the Madrid and Vienna Meetings of Representatives 
of the Participating States of the CSCE, 

Commending the ongoing activities of States to ensure that, through their 
national legal and administrative provisions and their national policies, 
environmental impact assessment is carried out, 

Conscious of the need to give explicit consideration to environmental 
factors at an early stage in the decision-making process by applying 
environmental impact assessment, at all appropriate administrative levels, 
as a necessary tool to improve the quality of information presented to 
decision makers so that environmentally sound decisions can be made paying 
careful attention to minimizing significant adverse impact, particularly in 
a transboundary context, 

Mindful of the efforts of international organizations to promote the use of 
environmental impact assessment both at the national and international 
levels, and taking into account work on environmental impact assessment 
carried out under the auspices of the United Nations Economic Commission 
for Europe, in particular results achieved by the Seminar on Environmental 
Impact Assessment (September 1987, Warsaw, Poland) as well as noting the 
Goals and Principles on environmental impact assessment adopted by the 
Governing Council of the United Nations Environment Programme, and the 
Ministerial Declaration on Sustainable Development (May 1990, Bergen, 
Norway), 

Have agreed as follows: 

                              Article 1 

                             DEFINITIONS 

For the purposes of this Convention, 

     (i) "Parties" means, unless the text otherwise indicates, the 
Contracting Parties to this Convention; 

     (ii) "Party of origin" means the Contracting Party or Parties to this 
Convention under whose jurisdiction a proposed activity is envisaged to 
take place; 

     (iii) "Affected Party" means the Contracting Party or Parties to this 
Convention likely to be affected by the transboundary impact of a proposed 
activity; 

     (iv) "Concerned Parties" means the Party of origin and the affected 
Party of an environmental impact assessment pursuant to this Convention; 

     (v) "Proposed activity" means any activity or any major change to an 
activity subject to a decision of a competent authority in accordance with 
an applicable national procedure; 

     (vi) "Environmental impact assessment" means a national procedure for 
evaluating the likely impact of a proposed activity on the environment; 

     (vii) "Impact" means any effect caused by a proposed activity on the 
environment including human health and safety, flora, fauna, soil, air, 
water, climate, landscape and historical monuments or other physical 
structures or the interaction among these factors; it also includes effects 
on cultural heritage or socio-economic conditions resulting from 
alterations to those factors; 

     (viii) "Transboundary impact" means any impact, not exclusively of a 
global nature, within an area under the jurisdiction of a Party caused by a 
proposed activity the physical origin of which is situated wholly or in 
part within the area under the jurisdiction of another Party; 

     (ix) "Competent authority" means the national authority or 
authorities designated by a Party as responsible for performing the tasks 
covered by this Convention and/or the authority or authorities entrusted by 
a Party with decision-making powers regarding a proposed activity; 

     (x) "The Public" means one or more natural or legal persons. 

                              Article 2 

                          GENERAL PROVISIONS 

1. The Parties shall, either individually or jointly, take all appropriate 
and effective measures to prevent, reduce and control significant adverse 
transboundary environmental impact from proposed activities. 

2. Each Party shall take the necessary legal, administrative or other 
measures to implement the provisions of this Convention, including, with 
respect to proposed activities listed in Appendix I that are likely to 
cause significant adverse transboundary impact, the establishment of an 
environmental impact assessment procedure that permits public participation 
and preparation of the environmental impact assessment documentation 
described in Appendix II. 

3. The Party of origin shall ensure that in accordance with the provisions 
of this Convention an environmental impact assessment is undertaken prior 
to a decision to authorize or undertake a proposed activity listed in 
Appendix I that is likely to cause a significant adverse transboundary 
impact. 

4. The Party of origin shall, consistent with the provisions of this 
Convention, ensure that affected Parties are notified of a proposed 
activity listed in Appendix I that is likely to cause a significant adverse 
transboundary impact. 

5. Concerned Parties shall, at the initiative of any such Party, enter into 
discussions on whether one or more proposed activities not listed in 
Appendix I is or are likely to cause a significant adverse transboundary 
impact and thus should be treated as if it or they were so listed. Where 
those Parties so agree, the activity or activities shall be thus treated. 
General guidance for identifying criteria to determine significant adverse 
impact is set forth in Appendix III. 

6. The Party of origin shall provide, in accordance with the provisions of 
this Convention, an opportunity to the public in the areas likely to be 
affected to participate in relevant environmental impact assessment 
procedures regarding proposed activities and shall ensure that the 
opportunity provided to the public of the affected Party is equivalent to 
that provided to the public of the Party of origin. 

7. Environmental impact assessments as required by this Convention shall, 
as a minimum requirement, be undertaken at the project level of the 
proposed activity. To the extent appropriate, the Parties shall endeavour 
to apply the principles of environmental impact assessment to policies, 
plans and programmes. 

8. The provisions of this Convention shall not affect the right of Parties 
to implement national laws, regulations, administrative provisions or 
accepted legal practices protecting information the supply of which would 
be prejudicial to industrial and commercial secrecy or national security. 

9. The provisions of this Convention shall not affect the right of 
particular Parties to implement, by bilateral or multilateral agreement 
where appropriate, more stringent measures than those of this Convention. 

10. The provisions of this Convention shall not prejudice any obligations 
of the Parties under international law with regard to activities having or 
likely to have a transboundary impact. 

                              Article 3 

                             NOTIFICATION 

1. For a proposed activity listed in Appendix I that is likely to cause a 
significant adverse transboundary impact, the Party of origin shall, for 
the purposes of ensuring adequate and effective consultations under Article 
5, notify any Party which it considers may be an affected Party as early as 
possible and no later than when informing its own public about that 
proposed activity. 

2. This notification shall contain, inter alia: 

     (a) Information on the proposed activity, including any available 
information on its possible transboundary impact; 

     (b) The nature of the possible decision; and 

     (c) An indication of a reasonable time within which a response under 
paragraph 3 of this Article is required, taking into account the nature of 
the proposed activity; 

and may include the information set out in paragraph 5 of this Article. 

3. The affected Party shall respond to the Party of origin within the time 
specified in the notification, acknowledging receipt of the notification, 
and shall indicate whether it intends to participate in the environmental 
impact assessment procedure. 

4. If the affected Party indicates that it does not intend to participate 
in the environmental impact assessment procedure, or if it does not respond 
within the time specified in the notification, the provisions in paragraphs 
5, 6, 7 and 8 of this Article and in Articles 4 to 7 will not apply. In 
such circumstances the right of a Party of origin to determine whether to 
carry out an environmental impact assessment on the basis of its national 
law and practice is not prejudiced. 

5. Upon receipt of a response from the affected Party indicating its desire 
to participate in the environmental impact assessment procedure, the Party 
of origin shall, if it has not already done so, provide to the affected 
Party: 

     (a) Relevant information regarding the environmental impact 
assessment procedure, including an indication of the time schedule for 
transmittal of comments; and 

     (b) Relevant information on the proposed activity and its possible 
significant adverse transboundary impact. 

6. An affected Party shall, at the request of the Party of origin, provide 
the latter with reasonably obtainable information relating to the 
potentially affected environment under the jurisdiction of the affected 
Party, where such information is necessary for the preparation of the 
environmental impact assessment documentation. The information shall be 
furnished promptly and, as appropriate, through a joint body where one 
exists. 

7. When a Party considers that it would be affected by a significant 
adverse transboundary impact of a proposed activity listed in Appendix I, 
and when no notification has taken place in accordance with paragraph 1 of 
this Article, the concerned Parties shall, at the request of the affected 
Party, exchange sufficient information for the purposes of holding 
discussions on whether there is likely to be a significant adverse 
transboundary impact. If those Parties agree that there is likely to be a 
significant adverse transboundary impact, the provisions of this Convention 
shall apply accordingly. If those Parties cannot agree whether there is 
likely to be a significant adverse transboundary impact, any such Party may 
submit that question to an inquiry commission in accordance with the 
provisions of Appendix IV to advise on the likelihood of significant 
adverse transboundary impact, unless they agree on another method of 
settling this question. 

8. The concerned Parties shall ensure that the public of the affected Party 
in the areas likely to be affected be informed of, and be provided with 
possibilities for making comments or objections on, the proposed activity, 
and for the transmittal of these comments or objections to the competent 
authority of the Party of origin, either directly to this authority or, 
where appropriate, through the Party of origin. 

                              Article 4 

    PREPARATION OF THE ENVIRONMENTAL IMPACT ASSESSMENT DOCUMENTATION 

1. The environmental impact assessment documentation to be submitted to the 
competent authority of the Party of origin shall contain, as a minimum, the 
information described in Appendix II. 

2. The Party of origin shall furnish the affected Party, as appropriate 
through a joint body where one exists, with the environmental impact 
assessment documentation. The concerned Parties shall arrange for 
distribution of the documentation to the authorities and the public of the 
affected Party in the areas likely to be affected and for the submission of 
comments to the competent authority of the Party of origin, either directly 
to this authority or, where appropriate, through the Party of origin within 
a reasonable time before the final decision is taken on the proposed 
activity. 

                              Article 5 

           CONSULTATIONS ON THE BASIS OF THE ENVIRONMENTAL 
                  IMPACT ASSESSMENT DOCUMENTATION 

The Party of origin shall, after completion of the environmental impact 
assessment documentation, without undue delay enter into consultations with 
the affected Party concerning, inter alia, the potential transboundary 
impact of the proposed activity and measures to reduce or eliminate its 
impact. Consultations may relate to: 

     (a) Possible alternatives to the proposed activity, including the 
no-action alternative and possible measures to mitigate significant adverse 
transboundary impact and to monitor the effects of such measures at the 
expense of the Party of origin; 

     (b) Other forms of possible mutual assistance in reducing any 
significant adverse transboundary impact of the proposed activity; and 

     (c) Any other appropriate matters relating to the proposed activity. 

The Parties shall agree, at the commencement of such consultations, on a 
reasonable time-frame for the duration of the consultation period. Any such 
consultations may be conducted through an appropriate joint body, where one 
exists. 

                              Article 6 

                           FINAL DECISION 

1. The Parties shall ensure that, in the final decision on the proposed 
activity, due account is taken of the outcome of the environmental impact 
assessment, including the environmental impact assessment documentation, as 
well as the comments thereon received pursuant to Article 3, paragraph 8 
and Article 4, paragraph 2, and the outcome of the consultations as 
referred to in Article 5. 

2. The Party of origin shall provide to the affected Party the final 
decision on the proposed activity along with the reasons and considerations 
on which it was based. 

3. If additional information on the significant transboundary impact of a 
proposed activity, which was not available at the time a decision was made 
with respect to that activity and which could have materially affected the 
decision, becomes available to a concerned Party before work on that 
activity commences, that Party shall immediately inform the other concerned 
Party or Parties. If one of the concerned Parties so requests, 
consultations shall be held as to whether the decision needs to be revised. 

                              Article 7 

                        POST-PROJECT ANALYSIS 

1. The concerned Parties, at the request of any such Party, shall determine 
whether, and if so to what extent, a post-project analysis shall be carried 
out, taking into account the likely significant adverse transboundary 
impact of the activity for which an environmental impact assessment has 
been undertaken pursuant to this Convention. Any post-project analysis 
undertaken shall include, in particular, the surveillance of the activity 
and the determination of any adverse transboundary impact. Such 
surveillance and determination may be undertaken with a view to achieving 
the objectives listed in Appendix V. 

2. When, as a result of post-project analysis, the Party of origin or the 
affected Party has reasonable grounds for concluding that there is a 
significant adverse transboundary impact or factors have been discovered 
which may result in such an impact, it shall immediately inform the other 
Party. The concerned Parties shall then consult on necessary measures to 
reduce or eliminate the impact. 

                              Article 8 

                BILATERAL AND MULTILATERAL CO-OPERATION 

The Parties may continue existing or enter into new bilateral or 
multilateral agreements or other arrangements in order to implement their 
obligations under this Convention. Such agreements or other arrangements 
may be based on the elements listed in Appendix VI. 

                              Article 9 

                         RESEARCH PROGRAMMES 

The Parties shall give special consideration to the setting up, or 
intensification of, specific research programmes aimed at: 

     (a) Improving existing qualitative and quantitative methods for 
assessing the impacts of proposed activities; 

     (b) Achieving a better understanding of cause-effect relationships 
and their role in integrated environmental management; 

     (c) Analysing and monitoring the efficient implementation of 
decisions on proposed activities with the intention of minimizing or 
preventing impacts; 

     (d) Developing methods to stimulate creative approaches in the search 
for environmentally sound alternatives to proposed activities, production 
and consumption patterns; 

     (e) Developing methodologies for the application of the principles of 
environmental impact assessment at the macro-economic level. 

The results of the programmes listed above shall be exchanged by the 
Parties. 

                              Article 10 

                       STATUS OF THE APPENDICES 

The Appendices attached to this Convention form an integral part of the 
Convention. 

                              Article 11 

                          MEETING OF PARTIES 

1. The Parties shall meet, so far as possible, in connection with the 
annual sessions of the Senior Advisers to ECE Governments on Environmental 
and Water Problems. The first meeting of the Parties shall be convened not 
later than one year after the date of the entry into force of this 
Convention. Thereafter, meetings of the Parties shall be held at such other 
times as may be deemed necessary by a meeting of the Parties, or at the 
written request of any Party; provided that, within six months of the 
request being communicated to them by the secretariat, it is supported by 
at least one third of the Parties. 

2. The Parties shall keep under continuous review the implementation of 
this Convention, and, with this purpose in mind, shall: 

     (a) Review the policies and methodological approaches to 
environmental impact assessment by the Parties with a view to further 
improving environmental impact assessment procedures in a transboundary 
context; 

     (b) Exchange information regarding experience gained in concluding 
and implementing bilateral and multilateral agreements or other 
arrangements regarding the use of environmental impact assessment in a 
transboundary context to which one or more of the Parties are party; 

     (c) Seek, where appropriate, the services of competent international 
bodies and scientific committees in methodological and technical aspects 
pertinent to the achievement of the purposes of this Convention; 

     (d) At their first meeting, consider and by consensus adopt rules of 
procedure for their meetings; 

     (e) Consider and, where necessary, adopt proposals for amendments to 
this Convention; 

     (f) Consider and undertake any additional action that may be required 
for the achievement of the purposes of this Convention. 

                              Article 12 

                            RIGHT TO VOTE 

1. Each Party to this Convention shall have one vote. 

2. Except ag provided for in paragraph 1 of this Article, regional economic 
integration organizations, in matters within their competence, shall 
exercise their right to vote with a number of votes equal to the number of 
their member States which are Parties to this Convention. Such 
organizations shall not exercise their right to vote if their member States 
exercise theirs, and vice versa. 

                              Article 13 

                              SECRETARIAT 

The Executive Secretary of the Economic Commission for Europe shall carry 
out the following secretariat functions: 

     (a) The convening and preparing of meetings of the Parties; 

     (b) The transmission of reports and other information received in 
accordance with the provisions of this Convention to the Parties; and 

     (c) The performance of other functions as may be provided for in this 
Convention or as may be determined by the Parties. 

                              Article 14 

                     AMENDMENTS TO THE CONVENTION 

1. Any Party may propose amendments to this Convention. 

2. Proposed amendments shall be submitted in writing to the secretariat, 
which shall communicate them to all Parties. The proposed amendments shall 
be discussed at the next meeting of the Parties, provided these proposals 
have been circulated by the secretariat to the Parties at least ninety days 
in advance. 

3. The Parties shall make every effort to reach agreement on any proposed 
amendment to this Convention by consensus. If all efforts at consensus have 
been exhausted, and no agreement reached, the amendment shall as a last 
resort be adopted by a three-fourths majority vote of the Parties present 
and voting at the meeting. 

4. Amendments to this Convention adopted in accordance with paragraph 3 of 
this Article shall be submitted by the Depositary to all Parties for 
ratification, approval or acceptance. They shall enter into force for 
Parties having ratified, approved or accepted them on the ninetieth day 
after the receipt by the Depositary of notification of their ratification, 
approval or acceptance by at least three fourths of these Parties. 
Thereafter they shall enter into force for any other Party on the ninetieth 
day after that Party deposits its instrument of ratification, approval or 
acceptance of the amendments. 

5. For the purpose of this Article, "Parties present and voting" means 
Parties present and casting an affirmative or negative vote. 

6. The voting procedure set forth in paragraph 3 of this Article is not 
intended to constitute a precedent for future agreements negotiated within 
the Economic Commission for Europe. 

                              Article 15 

                        SETTLEMENT OF DISPUTES 

1. If a dispute arises between two or more Parties about the interpretation 
or application of this Convention, they shall seek a solution by 
negotiation or by any other method of dispute settlement acceptable to the 
parties to the dispute. 

2. When signing, ratifying, accepting, approving or acceding to this 
Convention, or at any time thereafter, a Party may declare in writing to 
the Depositary that for a dispute not resolved in accordance with paragraph 
1 of this Article, it accepts one or both of the following means of dispute 
settlement as compulsory in relation to any Party accepting the same 
obligations: 

     (a) Submission of the dispute to the International Court of Justice; 

     (b) Arbitration in accordance with the procedure set out in Appendix 
VII. 

3. If the parties to the dispute have accepted both means of dispute 
settlement referred to in paragraph 2 of this Article, the dispute may be 
submitted only to the International Court of Justice, unless the parties 
agree otherwise. 

                              Article 16 

                               SIGNATURE 

This Convention shall be open for signature at Espoo (Finland) from 25 
February to 1 March 1991 and thereafter at United Nations Headquarters in 
New York until 2 September 1991 by states members of the Economic 
Commission for Europe as well as States having consultative status with the 
Economic Commission for Europe pursuant to paragraph 8 of the Economic and 
Social Council resolution 36 (IV) of 28 March 1947, and by regional 
economic integration organizations constituted by sovereign States members 
of the Economic Commission for Europe to which their member States have 
transferred competence in respect of matters governed by this Convention, 
including the competence to enter into treaties in respect of these 
matters. 

                              Article 17 

           RATIFICATION, ACCEPTANCE, APPROVAL AND ACCESSION 

1. This Convention shall be subject to ratification, acceptance or approval 
by signatory States and regional economic integration organizations. 

2. This Convention shall be open for accession as from 3 September 1991 by 
the States and organizations referred to in Article 16. 

3. The instruments of ratification, acceptance, approval or accession shall 
be deposited with the Secretary-General of the United Nations, who shall 
perform the functions of Depositary. 

4. Any organization referred to in Article 16 which becomes a Party to this 
Convention without any of its member States being a Party shall be bound by 
all the obligations under this Convention. In the case of such 
organizations, one or more of whose member States is a Party to this 
Convention, the organization and its member States shall decide on their 
respective responsibilities for the performance of their obligations under 
this Convention. In such cages, the organization and the member States 
shall not be entitled to exercise rights under this Convention 
concurrently. 

5. In their instruments of ratification, acceptance, approval or accession, 
the regional economic integration organizations referred to in Article 16 
shall declare the extent of their competence with respect to the matters 
governed by this Convention. These organizations shall also inform the 
Depositary of any relevant modification to the extent of their competence. 

                              Article 18 

                           ENTRY INTO FORCE 

1. This Convention shall enter into force on the ninetieth day after the 
date of deposit of the sixteenth instrument of ratification, acceptance, 
approval or accession. 

2. For the purposes of paragraph 1 of this Article, any instrument 
deposited by a regional economic integration organization shall not be 
counted as additional to those deposited by States members of such an 
organization. 

3. For each State or organization referred to in Article 16 which ratifies, 
accepts or approves this Convention or accedes thereto after the deposit of 
the sixteenth instrument of ratification, acceptance, approval or 
accession, this Convention shall enter into force on the ninetieth day 
after the date of deposit by such State or organization of its instrument 
of ratification, acceptance, approval or accession. 

                              Article 19 

                              WITHDRAWAL 

At any time after four years from the date on which this Convention has 
come into force with respect to a Party, that Party may withdraw from this 
Convention by giving written notification to the Depositary. Any such 
withdrawal shall take effect on the ninetieth day after the date of its 
receipt by the Depositary. Any such withdrawal shall not affect the 
application of Articles 3 to 6 of this Convention to a proposed activity in 
respect of which a notification has been made pursuant to Article 3, 
paragraph 1, or a request has been made pursuant to Article 3, paragraph 7, 
before such withdrawal took effect. 

                              Article 20 

                            AUTHENTIC TEXTS 

The original of this Convention, of which the English, French and Russian 
texts are equally authentic, shall be deposited with the Secretary-General 
of the United Nations. 

IN WITNESS WHEREOF the undersigned, being duly authorized thereto, have 
signed this Convention. 

DONE at Espoo (Finland), this twenty-fifth day of February one thousand 
nine hundred and ninety-one. 


                              APPENDIX I 

                          LIST OF ACTIVITIES 

1. Crude oil refineries (excluding undertakings manufacturing only 
lubricants from crude oil) and installations for the gasification and 
liquefaction of 500 tonnes or more of coal or bituminous shale per day. 

2. Thermal power stations and other combustion installations with a heat 
output of 300 megawatts or more and nuclear power stations and other 
nuclear reactors (except research installations for the production and 
conversion of fissionable and fertile materials, whose maximum power does 
not exceed 1 kilowatt continuous thermal load). 

3. Installations solely designed for the production or enrichment of 
nuclear fuels, for the reprocessing of irradiated nuclear fuels or for the 
storage, disposal and processing of radioactive waste. 

4. Major installations for the initial smelting of cast-iron and steel and 
for the production of non-ferrous metals. 

5. Installations for the extraction of asbestos and for the processing and 
transformation of asbestos and products containing asbestos: for 
asbestos-cement products, with an annual production of more than 20,000 
tonnes finished product; for friction material, with an annual production 
of more than 50 tonnes finished product; and for other asbestos utilization 
of more than 200 tonnes per year. 

6. Integrated chemical installations. 

7. Construction of motorways, express roads* and lines for long-distance 
railway traffic and of airports with a basic runway length of 2,100 metres 
or more. 

8. Large-diameter oil and gas pipelines. 

9. Trading ports and also inland waterways and ports for inland-waterway 
traffic which permit the passage of vessels of over 1,350 tonnes. 

10. Waste-disposal installations for the incineration, chemical treatment 
or landfill of toxic and dangerous wastes. 

11. Large dams and reservoirs. 

12. Groundwater abstraction activities in cases where the annual volume of 
water to be abstracted amounts to 10 million cubic metres or more. 

13. Pulp and paper manufacturing of 200 air-dried metric tonnes or more per 
day. 

14. Major mining, on-site extraction and processing of metal ores or coal. 

15. Offshore hydrocarbon production. 

16. Major storage facilities for petroleum, petrochemical and chemical 
products. 

17. Deforestation of large areas. 

------------------ 
* For the purposes of this Convention: 

     -- "Motorway" means a road specially designed and built for motor 
traffic, which does not serve properties bordering on it, and which: 

     (a) Is provided, except at special points or temporarily, with 
separate carriageways for the two directions of traffic, separated from 
each other by a dividing strip not intended for traffic or, exceptionally, 
by other means; 

     (b) Does not cross at level with any road, railway or tramway track, 
or footpath; and 

     (c) Is specially sign-posted as a motorway. 

     -- "Express road" means a road reserved for motor traffic accessible 
only from interchanges or controlled junctions and on which, in particular, 
stopping and parking are prohibited on the running carriageway(s). 


                            APPENDIX II 

   CONTENT OF THE ENVIRONMENTAL IMPACT ASSESSMENT DOCUMENTATION 

Information to be included in the environmental impact assessment 
documentation shall, as a minimum, contain, in accordance with Article 4: 

     (a) A description of the proposed activity and its purpose; 

     (b) A description, where appropriate, of reasonable alternatives (for 
example, locational or technological) to the proposed activity and also the 
no-action alternative; 

     (c) A description of the environment likely to be significantly 
affected by the proposed activity and its alternatives; 

     (d) A description of the potential environmental impact of the 
proposed activity and its alternatives and an estimation of its 
significance; 

     (e) A description of mitigation measures to keep adverse 
environmental impact to a minimum; 

     (f) An explicit indication of predictive methods and underlying 
assumptions as well as the relevant environmental data used; 

     (g) An identification of gaps in knowledge and uncertainties 
encountered in compiling the required information; 

     (h) Where appropriate, an outline for monitoring and management 
programmes and any plans for post-project analysis; and 

     (i) A non-technical summary including a visual presentation as 
appropriate (maps, graphs, etc.). 


                            APPENDIX III 

        GENERAL CRITERIA TO ASSIST IN THE DETERMINATION OF THE 
   ENVIRONMENTAL SIGNIFICANCE OF ACTIVITIES NOT LISTED IN APPENDIX I 

1. In considering proposed activities to which Article 2, paragraph 5, 
applies, the concerned Parties may consider whether the activity is likely 
to have a significant adverse transboundary impact in particular by virtue 
of one or more of the following criteria: 

     (a) Size: proposed activities which are large for the type of the 
activity; 

     (b) Location: proposed activities which are located in or close to an 
area of special environmental sensitivity or importance (such as wetlands 
designated under the Ramsar Convention, national parks, nature reserves, 
sites of special scientific interest, or sites of archaeological, cultural 
or historical importance); also, proposed activities in locations where the 
characteristics of proposed development would be likely to have significant 
effects on the population; 

     (c) Effects: proposed activities with particularly complex and 
potentially adverse effects, including those giving rise to serious effects 
on humans or on valued species or organisms, those which threaten the 
existing or potential use of an affected area and those causing additional 
loading which cannot be sustained by the carrying capacity of the 
environment. 

2. The concerned Parties shall consider for this purpose proposed 
activities which are located close to an international frontier as well as 
more remote proposed activities which could give rise to significant 
transboundary effects far removed from the site of development. 


                               APPENDIX IV 

                            INQUIRY PROCEDURE 

1. The requesting Party or Parties shall notify the secretariat that it or 
they submit(s) the question of whether a proposed activity listed in 
Appendix I is likely to have a significant adverse transboundary impact to 
an inquiry commission established in accordance with the provisions of this 
Appendix. This notification shall state the subject-matter of the inquiry. 
The secretariat shall notify immediately all Parties to this Convention of 
this submission. 

2. The inquiry commission shall consist of three members. Both the 
requesting party and the other party to the inquiry procedure shall appoint 
a scientific or technical expert, and the two experts so appointed shall 
designate by common agreement the third expert, who shall be the president 
of the inquiry commission. The latter shall not be a national of one of the 
parties to the inquiry procedure, nor have his or her usual place of 
residence in the territory of one of these parties, nor be employed by any 
of them, nor have dealt with the matter in any other capacity. 

3. If the president of the inquiry commission has not been designated 
within two months of the appointment of the second expert, the Executive 
Secretary of the Economic Commission for Europe shall, at the request of 
either party, designate the president within a further two-month period. 

4. If one of the parties to the inquiry procedure does not appoint an 
expert within one month of its receipt of the notification by the 
secretariat, the other party may inform the Executive Secretary of the 
Economic Commission for Europe, who shall designate the president of the 
inquiry commission within a further two-month period. Upon designation, the 
president of the inquiry commission shall request the party which has not 
appointed an expert to do so within one month. After such a period, the 
president shall inform the Executive Secretary of the Economic Commission 
for Europe, who shall make this appointment within a further two-month 
period. 

5. The inquiry commission shall adopt its own rules of procedure. 

6. The inquiry commission may take all appropriate measures in order to 
carry out its functions. 

7. The parties to the inquiry procedure shall facilitate the work of the 
inquiry commission and, in particular, using all means at their disposal, 
shall: 

     (a) Provide it with all relevant documents, facilities and 
information; and 

     (b) Enable it, where necessary, to call witnesses or experts and 
receive their evidence. 

8. The parties and the experts shall protect the confidentiality of any 
information they receive in confidence during the work of the inquiry 
commission. 

9. If one of the parties to the inquiry procedure does not appear before 
the inquiry commission or fails to present its case, the other party may 
request the inquiry commission to continue the proceedings and to complete 
its work. Absence of a party or failure of a party to present its case 
shall not constitute a bar to the continuation and completion of the work 
of the inquiry commission. 

10. Unless the inquiry commission determines otherwise because of the 
particular circumstances of the matter, the expenses of the inquiry 
commission, including the remuneration of its members, shall be borne by 
the parties to the inquiry procedure in equal shares. The inquiry 
commission shall keep a record of all its expenses, and shall furnish a 
final statement thereof to the parties. 

11. Any Party having an interest of a factual nature in the subject-matter 
of the inquiry procedure, and which may be affected by an opinion in the 
matter, may intervene in the proceedings with the consent of the inquiry 
commission. 

12. The decisions of the inquiry commission on matters of procedure shall 
be taken by majority vote of its members. The final opinion of the inquiry 
commission shall reflect the view of the majority of its members and shall 
include any dissenting view. 

13. The inquiry commission shall present its final opinion within two 
months of the date on which it was established unless it finds it necessary 
to extend this time limit for a period which should not exceed two months. 

14. The final opinion of the inquiry commission shall be based on accepted 
scientific principles. The final opinion shall be transmitted by the 
inquiry commission to the parties to the inquiry procedure and to the 
secretariat. 


                                APPENDIX V 

                           POST-PROJECT ANALYSIS 

Objectives Include: 

     (a) Monitoring compliance with the conditions as set out in the 
authorization or approval of the activity and the effectiveness of 
mitigation measures;  

     (b) Review of an impact for proper management and ln order to cope 
with uncertainties; 

     (c) Verification of past predictions in order to transfer experience 
to future activities of the same type. 


                                APPENDIX VI 

           ELEMENTS FOR BILATERAL AND MULTILATERAL CO-OPERATION 

1. Concerned Parties may set up, where appropriate, institutional 
arrangements or enlarge the mandate of existing institutional arrangements 
within the framework of bilateral and multilateral agreements in order to 
give full effect to this Convention. 

2. Bilateral and multilateral agreements or other arrangements may include: 

     (a) Any additional requirements for the implementation of this 
Convention, taking into account the specific conditions of the subregion 
concerned; 

     (b) Institutional, administrative and other arrangements, to be made 
on a reciprocal and equivalent basis; 

     (c) Harmonization of their policies and measures for the protection 
of the environment in order to attain the greatest possible similarity in 
standards and methods related to the implementation of environmental impact 
assessment; 

     (d) Developing, improving, and/or harmonizing methods for the 
identification, measurement, prediction and assessment of impacts, and for 
post-project analysis; 

     (e) Developing and/or improving methods and programmes for the 
collection, analysis, storage and timely dissemination of comparable data 
regarding environmental quality in order to provide input into 
environmental impact assessment; 

     (f) The establishment of threshold levels and more specified criteria 
for defining the significance of transboundary impacts related to the 
location, nature or size of proposed activities, for which environmental 
impact assessment in accordance with the provisions of this Convention 
shall be applied; and the establishment of critical loads of transboundary 
pollution; 

     (g) Undertaking, where appropriate, joint environmental impact 
assessment, development of joint monitoring programmes, intercalibration of 
monitoring devices and harmonization of methodologies with a view to 
rendering the data and information obtained compatible. 


                             APPENDIX VII 

                              ARBITRATION 

1. The claimant Party or Parties shall notify the secretariat that the 
Parties have agreed to submit the dispute to arbitration pursuant to 
Article 15, paragraph 2, of this Convention. The notification shall state 
the subject-matter of arbitration and include, in particular, the Articles 
of this Convention, the interpretation or application of which are at 
issue. The secretariat shall forward the information received to all 
Parties to this Convention. 

2. The arbitral tribunal shall consist of three members. Both the claimant 
Party or Parties and the other Party or Parties to the dispute shall 
appoint an arbitrator, and the two arbitrators so appointed shall designate 
by common agreement the third arbitrator, who shall be the president of the 
arbitral tribunal. The latter shall not be a national of one of the parties 
to the dispute, nor have his or her usual place of residence in the 
territory of one of these parties, nor be employed by any of them, nor have 
dealt with the case in any other capacity. 

3. If the president of the arbitral tribunal has not been designated within 
two months of the appointment of the second arbitrator, the Executive 
Secretary of the Economic Commission for Europe shall, at the request of 
either party to the dispute, designate the president within a further 
two-month period. 

4. If one of the parties to the dispute does not appoint an arbitrator 
within two months of the receipt of the request, the other party may inform 
the Executive Secretary of the Economic Commission for Europe, who shall 
designate the president of the arbitral tribunal within a further two-month 
period. Upon designation, the president of the arbitral tribunal shall 
request the party which has not appointed an arbitrator to do so within two 
months. After such a period, the president shall inform the Executive 
Secretary of the Economic Commission for Europe, who shall make this 
appointment within a further two-month period. 

5. The arbitral tribunal shall render its decision in accordance with 
international law and in accordance with the provisions of this Convention. 

6. Any arbitral tribunal constituted under the provisions set out herein 
shall draw up its own rules of procedure. 

7. The decisions of the arbitral tribunal, both on procedure and on 
substance, shall be taken by majority vote of its members. 

8. The tribunal may take all appropriate measures in order to establish the 
facts. 

9. The parties to the dispute shall facilitate the work of the arbitral 
tribunal and, in particular, using all means at their disposal, shall: 

     (a) Provide it with all relevant documents, facilities and 
information; and 

     (b) Enable it, where necessary, to call witnesses or experts and 
receive their evidence. 

10. The parties and the arbitrators shall protect the confidentiality of 
any information they receive in confidence during the proceedings of the 
arbitral tribunal. 

11. The arbitral tribunal may, at the request of one of the parties, 
recommend interim measures of protection. 

12. If one of the parties to the dispute does not appear before the 
arbitral tribunal or fails to defend its case, the other party may request 
the tribunal to continue the proceedings and to render its final decision. 
Absence of a party or failure of a party to defend its case shall not 
constitute a bar to the proceedings. Before rendering its final decision, 
the arbitral tribunal must satisfy itself that the claim is well founded in 
fact and law. 

13. The arbitral tribunal may hear and determine counter-claims arising 
directly out of the subject-matter of the dispute. 

14. Unless the arbitral tribunal determines otherwise because of the 
particular circumstances of the case, the expenses of the tribunal, 
including the remuneration of its members, shall be borne by the parties to 
the dispute in equal shares. The tribunal shall keep a record of all its 
expenses, and shall furnish a final statement thereof to the parties. 

15. Any Party to this Convention having an interest of a legal nature in 
the subject-matter of the dispute, and which may be affected by a decision 
in the case, may intervene in the proceedings with the consent of the 
tribunal. 

16. The arbitral tribunal shall render its award within five months of the 
date on which it is established unless it finds it necessary to extend the 
time limit for a period which should not exceed five months. 

17. The award of the arbitral tribunal shall be accompanied by a statement 
of reasons. It shall be final and binding upon all parties to the dispute. 
The award will be transmitted by the arbitral tribunal to the parties to 
the dispute and to the secretariat. The secretariat will forward the 
information received to all Parties to this Convention. 

18. Any dispute which may arise between the parties concerning the 
interpretation or execution of the award may be submitted by either party 
to the arbitral tribunal which made the award or, if the latter cannot be 
seized thereof, to another tribunal constituted for this purpose in the 
same manner as the first.