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Coverage Derivation: The original coverage from the COG came with unspecified scale which has been adjusted to 1:2,400 scale. The following coverages (layers) were used to adjust the COGTAZ boundaries: PAZ, CAZ, PA, Streams, Muni., PGTAZ, Cline, Property, 2000 Aerial, Roadsall and Zoning. In addition, the Research Section also sought input from the Community and Countywide Planning Divisions to achieve further refinements to the geography and data. The boundaries and attribute data were checked by the Research Section staff for quality control. 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