For the purpose of this chapter the police and firemen of the city shall have the same authority and jurisdiction over the airport properties generally described as the Southeast Quarter of Section Thirty, in Township Twenty North, Range Sixteen EWM, in Kittitas County, as the police and firemen have within the city limits of the city. And for all purposes of this chapter, the airport properties shall be considered and treated as if lying within the limits of the city, insofar as the application and enforcement of this chapter is concerned.