These rankings are based on the EM-40 Release Site Methodology.

This map has been divided into several sections denoted by the black numbers and lines. Please select a section to see an enlarged map and to gain information concerning the release sites.

Please note that not all of the release sites are listed and not all of the listed sites are linked to further information.

View a list of PORTS Release Sites.

View the Basis for the Rank Codes.

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