fp_lomxp displays area boundaries in which the floodplain data has been revised by Letter Of Map Revision (LOMR), BUT THE UPDATED BOUNDARIES HAVE NOT YET BEEN INPUT INTO THE GIS FLOODPLAIN LAYERS, I.E. FP_DFIRM, FP_FLWAY, ETC. Known Errors/Qualifications: The revision area boundaries were screen digitized using the FIRM panel as a reference. This layer may or may not have data in it at any given time. As LOMR documents are processed the relevant information is removed from this layer. A place holder polygon exits in the SW corner of the data in order to prevent the data set from registering as NULL when it is empty. This is necessary since an empty shapefile can't be converted to coverage format as required by the library. The place holder polygon is attributed as PLACEHOLDER in the CASENUM field. Spatial Domain: Pima County Rectified: n/a Maintenance Organization: PC ITD GIS Maintenance Description: LOMR documents which are not accompanied by digital linework, are used as a reference to screen-digitize polygons that represent the areas of revision. Maintenance Frequency: Varies Maintenance Format: Enterprise GDB Primary Source Organization: Michael Baker Jr. Corp. Primary Source Contact: Michael Garner 703.960.8800 x3031 Primary Source Date: 2008 Primary Source Format: Paper Secondary Source Organization: FEMA Secondary Source Format: Paper GIS Contact: Mary Beth Clark