This chapter shall be known and may be cited as the airport obstruction zoning chapter.
(Ord. 1129 § 1, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
In order to carry out the provisions of this chapter, there are hereby created and established certain zones which include all of the land lying beneath the approach surfaces, transitional surfaces, horizontal surfaces, and conical surfaces as they apply to the Packwood, Ed Carlson Memorial Field, and Chehalis-Centralia Airports.
(1)
For the Packwood and Ed Carlson Memorial Field Airports, such zones are shown on the airport approach and clear zone map, which is adopted by reference as part of this chapter.
(2)
For the Chehalis-Centralia Airport, such zones are shown on the Chehalis-Centralia Airport Imaginary Surfaces Drawing, prepared in conjunction with the Airport Master Plan (2000), Map 85 at LCC § 17.200.030 which is adopted by reference as part of this chapter.
An area located in more than one of the zones is considered to be only in the zone with the more restrictive height limitation.
(Ord. 1269 § 30, 2016)
The various zones are hereby established and defined as follows:
(1)
Approach Zone.
(a)
Packwood Approach Zone. For the Packwood Airport, the inner edge of this approach zone coincides with the width of the primary surface and is 250 feet wide for Runway 1/19. The approach zone expands outward uniformly to a width of 1,250 feet at a horizontal distance of 5,000 feet from the primary surface. Its centerline is the continuation of the centerline of the runway.
(b)
Ed Carlson Approach Zone. For the Ed Carlson Memorial Field Airport, the inner edge of this approach zone coincides with the width of the primary surface and is 500 feet wide for Runway 6/24. The approach zone expands outward uniformly to a width of 1,500 feet at a horizontal distance of 5,000 feet from the primary surface. Its centerline is the continuation of the centerline of the runway.
(c)
Chehalis-Centralia Larger than Utility Approach Zone. For the Chehalis-Centralia Airport, the inner edge of this approach zone coincides with the width of the primary surface and is 500 feet wide. The approach zone expands outward uniformly to a width of 3,500 feet at a horizontal distance of 10,000 feet from the primary surface. Its centerline is the continuation of the centerline of the runway.
(2)
Transitional Zones. The transitional zones are the areas beneath the transitional surfaces.
(3)
Horizontal Zone.
(a)
For the Packwood and Ed Carlson Memorial Field Airports, the horizontal zone is established by swinging arcs of 5,000 feet radii from the center of each end of the primary surface of each runway and connecting the adjacent arcs by drawing lines tangent to those arcs. The horizontal zone does not include the approach and transitional zones.
(b)
For the Chehalis-Centralia Airport, the horizontal zone is established by swinging arcs of 10,000 feet radii from the center of each end of the primary surface of each runway and connecting the adjacent arcs by drawing lines tangent to those arcs. The horizontal zone does not include the approach and transitional zones.
(4)
Conical Zone. The conical zone is established as the area that commences at the periphery of the horizontal zone and extends outward and upward at 20:1 therefrom for a horizontal distance of 4,000 feet.
(Formerly 17.80.030; Ord. 1129 § 3, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
(1)
General. Except as otherwise provided in this chapter, no structure shall be erected, altered, or maintained, and no tree shall be allowed to grow in any zone created by this chapter to a height in excess of the applicable height limit herein established for such zone. Such applicable height limitations are hereby established for each of the zones in question as follows:
(a)
Approach Zone.
(i)
For the Packwood Airport, slopes 20 feet outward for each foot upward (20:1) beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 5,000 feet along the extended runway centerline.
(ii)
For the Ed Carlson Memorial Airport, slopes 34 feet outward for each foot upward (34:1) beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 5,000 feet along the extended runway centerline.
(iii)
For the Ed Carlson Memorial Airport and Chehalis-Centralia Airport, slopes 34 feet outward for each foot upward (34:1) beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 10,000 feet along the extended runway centerline.
(b)
Transitional Zones. Slopes seven feet outward for each foot upward (7:1) beginning at the sides of and at the same elevation as the primary surface and the approach surface, and extending to a height of 150 feet above the airport elevation.
(c)
Horizontal Zone. Established at 150 feet above the airport elevation.
(d)
Conical Zone. Slopes 20 feet outward for each foot upward (20:1) for 4,000 feet beginning at the periphery of the horizontal zone and at 150 feet above the airport elevation and extending to a height of 350 feet above the airport elevation.
(2)
All structures shall be limited in height consistent with Federal Aviation Regulations (FAR) Part 77 for airport operations or the height limitations of the district, whichever is less. Nothing in this chapter shall restrict the height of a structure to 15.5 feet or less.
(Ord. 1129 § 4, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
(1)
Notwithstanding any other provisions of this chapter, no use may be made of land or water within any zone established by this chapter in such a manner as to create electrical interference with navigational signals or radio communication between the airport and aircraft, make it difficult for pilots to distinguish between airport lights and others, result in glare in the eyes of pilots using the airport, impair visibility in the vicinity of the airport, create bird strike hazards, or otherwise in any way endanger or interfere with the landing, takeoff, or maneuvering of aircraft intending to use the airport.
(2)
Uses within the mapped areas shall be consistent with RCW 36.70A.547 to discourage the siting of incompatible uses adjacent to public aviation airports.
(Ord. 1129 § 5, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
(1)
Regulations Not Retroactive. The regulations prescribed by this chapter shall not be construed to require the removal, lowering, or other change or alteration of any structure or tree not conforming to the regulations as of the effective date of the ordinance codified in this chapter, or otherwise interfere with the continuance of nonconforming use. Nothing contained herein shall require any change in the construction, alteration, or intended use of any structure, the construction or alteration of which was begun prior to the effective date of the ordinance codified in this chapter, and is diligently prosecuted. However, before any nonconforming structure or tree may be replaced, substantially altered or repaired, rebuilt, allowed to grow higher, or replanted, a permit must be secured from the administrator under the procedures specified in LCC § 17.80.070 through § 17.80.120. No permit shall be granted that would permit a nonconforming tree to become higher or a nonconforming structure to be made or become a greater hazard to air navigation than it was when the applicable regulation was adopted or than it is when application for a permit is made.
(2)
Marking and Lighting. Notwithstanding the preceding provision of this section, the owner of any existing nonconforming structure or tree is hereby required to permit the installation, operation, and maintenance thereon of such markers and lights as shall be deemed necessary by the airport owner to indicate to the operators of aircraft in the vicinity of the airport the presence of such airport obstruction. Such markers and lights shall be installed, operated, and maintained at the expense of the airport owner.
(Ord. 1129 § 6, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
(1)
Except as specifically provided in subsections (2) and (3) of this section, no material change shall be made in the use of land, no structure shall be erected or otherwise established, and no tree shall be planted in any zone hereby created unless a permit therefor shall have been applied for and granted. Each application for a permit shall indicate the purpose for which the permit is desired, with sufficient particularity to permit it to be determined whether the resulting use, structure, or tree would conform to the regulations herein prescribed. If such determination is in the affirmative, the permit shall be granted. No permit for a use inconsistent with the provisions of this chapter shall be granted unless a variance has been approved in accordance with LCC § 17.80.100.
(2)
In the area lying within the limits of the horizontal zone and conical zone, no permit shall be required for any tree or structure less than 75 feet of vertical height above the ground, except when, because of terrain, land contour, or topographic features, such tree or structure would extend above the height limits prescribed for such zones.
(3)
In areas lying within the limits of the approach zones, but at a horizontal distance of not less than 4,200 feet from each end of the runway, no permit shall be required for any tree or structure less than 75 feet of vertical height above the ground, except when such tree or structure would extend above the height limits prescribed for such approach zones.
(4)
Nothing contained in any of the foregoing exceptions shall be construed as permitting or intending to permit any construction, or alteration of any structure, or growth of any tree in excess of any height limits established by this chapter.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
No permit shall be granted that would allow the establishment or creation of an obstruction or permit a nonconforming use, structure, or tree to become a greater hazard to air navigation than it was on the effective date of the ordinance codified in this chapter or any amendments thereto or than it is when the application for a permit is made. Except as indicated, all applications for such a permit shall be granted.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
Whenever the administrator determines that a nonconforming tree or structure has been abandoned or more than 80 percent torn down, physically deteriorated, or decayed, no permit shall be granted that would allow such structure or tree to exceed the applicable height limit or otherwise deviate from the zoning regulations.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
Variances from the standards of this chapter shall be processed in accordance with LCC § 17.162.010.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
Any permit or variance granted may, if such action is deemed advisable to effectuate the purpose of this chapter and be reasonable in the circumstance, be so conditioned as to require the owner of the structure or tree in question to install, operate, and maintain, at the owner's expense, such markings and lights as may be necessary. If deemed proper by the planning commission, this condition may be modified to require the owner to permit the airport owner, at its own expense, to install, operate, and maintain the necessary markings and lights.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)
Any proposed use located in an approach zone shall be treated as a Type III special use application per Chapter 17.05 LCC.
(Ord. 1129 § 8, 1993; Ord. 1157, 1998; Ord. 1170B, 2000; Ord. 1269 § 30, 2016)