Description: Aliquots are generated from Outer Continental Shelf (OCS) blocks by subdividing each block into 16ths, and this further subdivision allows for more detailed boundary delineation in offshore energy leasing. The aliquots use a letter designation in addition to their parent protraction number and OCS block number (e.g., NK18-02, 6822F). A full OCS block is 4800 x 4800 meters, while an aliquot measures 1200 x 1200 meters. Smaller, clipped aliquots are found along the Federal/State OCS boundary and along UTM zone borders. Only the most recently published paper or PDF versions of the Official Protraction Aliquot Diagram (OPAD) should be used for official or legal purposes. The OPAD maps can be accessed by clicking on the link in the Official Protraction Aliquot Diagram field of the attribute table.
Copyright Text: Bureau of Ocean Energy Management (BOEM), Office of Strategic Resources, Geospatial Services Division
CATG_CODE (type: esriFieldTypeSmallInteger, alias: Aliquot Category Code, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [0: Entire block is seaward of Limit of “8(g) Zone” and contains no boundaries], [1: Intersected by Submerged Lands Act Boundary], [2: Intersected by Limit of “8(g) Zone”], ... 18 more ...)