➢ Prepare and maintain sketches, maps, reports, and legal descriptions of surveys in order to describe, certify, and assume liability for work performed. ➢ Verify the accuracy of survey data, including measurements and calculations conducted at survey sites. ➢ Record the results of surveys, including the shape, contour, location, elevation, and dimensions of land or land features. ➢ Calculate heights, depths, relative positions, property lines, and other characteristics of terrain. ➢ Prepare or supervise preparation of all data, charts, plots, maps, records, and documents related to surveys. ➢ Plan and conduct ground surveys designed to establish baselines, elevations, and other geodetic measurements. ➢ Search legal records, survey records, and land titles in order to obtain information about property boundaries in areas to be surveyed. ➢ Coordinate findings with the work of engineering and architectural personnel, clients, and others concerned with projects. ➢ Adjust surveying instruments in order to maintain their accuracy. ➢ Establish fixed points for use in making maps, using geodetic and engineering instruments. ➢ Determine longitudes and latitudes of important features and boundaries in survey areas, using theodolites, transits, levels, and satellite-based global positioning systems (GPS). ➢ Train assistants and helpers, and direct their work in such activities as performing surveys or drafting maps. ➢ Analyze survey objectives and specifications in order to prepare survey proposals or to direct others in survey proposal preparation. ➢ Compute geodetic measurements and interpret survey data in order to determine positions, shapes, and elevations of geomorphic and topographic features. ➢ Develop criteria for survey methods and procedures. ➢ Develop criteria for the design and modification of survey instruments.