H.Airport Noise Impact Boundary. Areas located within 1,500 feet of an airport runway or within established noise contour boundaries exceeding 55 DNL. I.Airport Safety Combining Zone (AS Zone). A Deschutes County zone intended to place additional land use conditions on land impacted by the airport while retaining the existing underlying zone. The airport imaginary surfaces, impact areas, boundaries and their use limitations comprise the AS Zone. The AS Zone may apply to either public-use or private-use airports. J. Airport Secondary Impact Area. The area located between 5,000 and 10,000 feet from an airport runway. (Redmond, Bend, and Sunriver) K.Airport Sponsor. The owner, manager, or other person or entity designated to represent the interests of an airport. L. Airport Uses. Those uses described in OAR 660-013-0100 and 660-013-0110. M.Approach Surface. A surface longitudinally centered on the extended runway centerline and extending outward and upward from each end of the primary surface. For Redmond, Bend, Sunriver, and Sisters airports: 1. The inner edge of the approach surface is the same width as the primary surface and it expands uniformly to a width of: a. 1,250 feet for a utility runway having a visual approach; b. 1,500 feet for other than a utility runway having a visual approach; c. 2,000 feet for a utility runway having a non-precision instrument approach; d.3,500 feet for a non-precision instrument runway, other than utility, having visibility minimums greater than three-fourths statute mile; e.4,000 feet for a non-precision instrument runway, other than utility, having visibility minimums at or below three-fourths statute mile; and f. 16,000 feet for precision instrument runways. 2. The approach surface extends for a horizontal distance of a.5,000 feet at a slope of 20 feet outward for each foot upward for all utility runways; b.10,000 feet at a slope of 34 feet outward for each foot upward for all non- precision instrument runways, other than utility; and c.10,000 feet at a slope of 50 feet outward for each one foot upward, with an additional 40,000 feet at slope of 40 feet outward for each one foot upward, for precision instrument runways. 3.The outer width of an approach surface will be that width prescribed in DCC 18.80.022(M)(3) for the most precise approach existing or planned for that runway end. For the Cline Falls and Juniper airports: 4. The inner edge of the approach surface is the same width as the primary surface and it expands uniformly to a width of 450 feet for that end of a private use airport with only visual approaches. The approach surface extends for a horizontal distance of 2,500 feet at a slope of 20 feet outward for each one foot upward.
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