When working in the field: Mobility to work in changing site conditions; to sit, stand, and walk on level, uneven, or slippery surfaces; to traverse rugged terrain and mountainous areas by foot; to reach, twist, turn, kneel, and bend, to climb and descend ladders; and to operate a motor vehicle and visit various County sites. a high school diploma and a minimum of four (4) years of relevant experience within the last ten (10) years in any of the following occupations: an accountant, auditor, real property appraiser, building cost estimator, engineer, real estate loan agent, real estate loan underwriter, right-of-way agent, licensed building contractor, or.