• Brochure about the UNEP GPA Clearing-House Mechanism. (March 2002)
• The Clearing-House Mechanism of the GPA: A progress report and possible way forward. Report for the Intergovernmental Review Meeeting on the Implementation of the GPA. (November 2001)

• Pollutant Source Category Nodes [GPA list] – see also below
  
• Regional Nodes [GPA list]
  
• National nodes [GPA list]
  
• Other GPA Nodes [GPA list]

• Sewage [Lead Agency: World Health Organization, WHO. Node provided by WHO and Sanitation Connection Partners];
  
• Persistent organic pollutants [ Lead Agency: UNEP. Node provided by UNEP];
  
• Radioactive substances [Lead Agency: International Atomic Energy Agency, IAEA. Node provided by IAEA];
  
• Heavy metals [Lead Agency: UNEP. Node provided by UNEP];
  
• Marine litter [Lead Agency: International Maritime Organization, IMO];
  
• Oils (hydrocarbons) [Lead Agency: UN International Maritime Organization, IMO];
  
• Nutrients [Lead Agency: Food and Agriculture Organization, FAO. Node provided by FAO];
  
• Sediment mobilization [Lead Agency: Food and Agriculture Organization, FAO. Node provided by FAO];
  
• Physical alterations and destruction of habitats [Lead Agency: UNEP].

• UNEP Caribbean Environment Programme [CEP];
• South Pacific Regional Environment Programme [SPREP]; and
• Protection of the Arctic Marine Environment [PAME]).

• Australia (web site);
• Brazil: index page leading to
  • Brazilian National Programme of Action for Protection of the Marine Environment from Land-based Activities in the Brazilian Section of the Upper Southwest Atlantic Region. (Also as here.
• Canada; (web site):
  • Canada's National Programme Action for the Protection of the Marine Environment from Land-Based Activities.
  • Le programme d’action national du Canada pour la protection du milieu marin contre la pollution due aux activités terrestres.
• Iceland: index page leading to brief programme descriptions and
  • Iceland's National Programme of Action and
  • Framkvæmdaáætlun um varnir gegn mengun sjávar frálandi

• Integrated Coastal Management, [ICM - GPA Joint Page]; and
• Joint GPA - Convention on Biological Diversity Page)

Pollutant Source Categories. Designated by the GPA, along with a designated lead agency that is responsible for the creation and maintenance of the node for that pollutant source category. These nodes address the problems of:

Regional Seas. The UNEP regional seas programmes have been incorporated into the Clearing-House to provide a regional and national framework and perspectives for the GPA information and data. It is envisaged that most of the UNEP Regional Seas will become GPA clearing-house nodes.

Coastal Zone Management Framework. While looking at the structure and approach to implementing the GPA, there is a need incorporate the coastal zone management framework into the implementation strategy. This model will be incorporated into the structure of the GPA Clearing-House to facilitate a logical approach, especially for professionals, to the access of information and data.

Economic Sectors Nodes. Another approach to categorizing GPA related information is by economic sector. Using economic sectors — Industry, Agriculture, Energy, Trade and Services, Households, Transport, Tourism, Harbour Development, Urban Development, Forestry, River-basin Management, and Coastal Zone Management — as a framework is especially useful for users to quickly find needed information using a common and intuitive approach.