1.  GPS data collection and workflow  Spatial Analyses

2. START SDE valves in GIS Update GPS point Import points into Trimble GeoXT handheld Point found in the field? YES NO YES Was it missed? NO Action by valve maintenance 1.Daily Trimble Pathfinder SSF backup batch processing 2.Windows Scheduler runs batch file with Xcopy command. Was the GeoXT docked in the cradle back at office? YES NO STOP! No back-up occurs! Files in the GeoXT are processed and backed up daily. An SSF file is created and copied to the network. Pathfinder Office: Post processing if shot with SBAS/WAAS otherwise export SSF to SHP Is it Monday Morning? YES End of Map Page Series? YES Queried and found valves in Map Page Series with empty GPS XYZ values? NO Drafting will edit/create Map Page valves in GIS END NO YES NO Any more Map Page Series to post in GIS? GPS FLOW GIS FLOW Valve GPS to GIS process YES NO Imported Valves Remaining? YES Export points flagged as ‘IMPORTED’. (no GPS yet) Run GPS valve layer split tool using GIS Map Page Tool End of Map Page Series? Append New and Updated SHP to GPS SDE inventory layer Export and split PathFinder SHP into 3 shapefiles: NEW.shp UPDATED’.shp IMPORTED.shp. YES

4. Used ArcGIS 9.2 Spatial Analyst extension Point density Reclassification Weighted overlay