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<br />METHODS <br /> <br />ECO designed and constructed a database in a format that is compatible with <br />the existing parcel files and zoning diagrams of Lane County, Eugene, and <br />Springfield, and that supports the collective ability to update and query the <br />inventories. The database is based entirely on existing data sets that were <br />supplemented with verification steps. <br /> <br />ECO worked closely with a Technical Advisory Committee composed of staff <br />from the four sponsor organizations as well as the Lane Council of Governments. <br />The TAC met six times during the project to discuss issues related to the <br />development of the database. ECO developed the database using the following <br />steps: <br /> <br />. Assemble and document datasets. ECO identified data table exports from <br />the Regional Land Information Database (RLID) and GIS data from Lane <br />Council of Governments as primary datasets on which this database and <br />analysis was built. Additionally, the database includes selected GIS <br />datasets from the City and Eugene and City of Springfield as well a series <br />of spreadsheets containing information on commercial and industrial rural <br />land produced by Lane County. This step also includes notes covering the <br />limitations inherent in combining specific datasets used for analysis. <br /> <br />. Preliminary analysis. ECO conducted a preliminary analysis with the GIS <br />and data tables selected for inclusion in the database. The purpose of this <br />task was to work with the T AC to determine the optimal definition and <br />supporting methodology on which to base the final analysis and database <br />structure. <br /> <br />. Draft database structure. Based on the preliminary analysis, ECO <br />developed a draft database structure that includes existing data sources. <br /> <br />. GIS analysis, data processing, and query interface. In this step ECO <br />performed the GIS analysis and data processing steps necessary to <br />populate the database. <br /> <br />. Verification. ECO used to use a multi-step verification process: The initial <br />verification occurred as part of the preliminary analysis. This step <br />included a staff-level review of preliminary database output (maps) <br />showing the land base and plan designations. The second round of <br />verification involved a "rapid visual assessment" of land classifications <br />using GIS and recent aerial photos. ECO reviewed all of the land base <br />using the rapid visual assessment methodology. The third round of <br />verification involved city staff verifying the rapid visual assessment <br /> <br />DRAFT: Commercial and Industrial Lands Database <br /> <br />ECONorthwest <br /> <br />July 2006 <br /> <br />Page 3 <br />