Process Description:
· Snapset from 8/1/2011 assembled from the following source layers: o District BNDY o RAIL o RoadPly o StreetSegmentLn o WATER o OwnerPly Procedure: 1. The reference materials were assembled in the ArcMap 9.3.1 environment. The prj file defined the projection in which arcs were selected to define the PSAs. 2. For arcs that required spatial modifications like splitting, snapping, or drawing in new segments, segments were created in ArcMap. 3. After all the segments that comprise the PSAs were completed, the analyst selected all the arcs and placed into a new coverage. This new coverage was used to QC the selections if there were any segments missing to enclose polygons or self intersecting arcs. Staff performed a build on the coverage to identify arcs with topological errors. 4. The PSA coverage attribute table was then populated with the PSA 5. Staff then saved the changes and the process is completed.