Runway means a defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft;
Glass means Internal Glass, External Glass and Specified Glass.
washing means a process of separation by water using only size as a criterion;
Cleaning means the act of removing septage or other wastes from a wastewater treatment system component or grease/waste from a grease interceptor.
Graffiti shall not include: (1) any sign or banner that is authorized by, and in compliance with, the applicable requirements of the San Francisco Public Works Code, the San Francisco Planning Code or the San Francisco Building Code; or (2) any mural or other painting or marking on the property that is protected as a work of fine art under the California Art Preservation Act (California Civil Code Sections 987 et seq.) or as a work of visual art under the Federal Visual Artists Rights Act of 1990 (17 U.S.C. §§ 101 et seq.). Any failure of Contractor to comply with this section of this Agreement shall constitute an Event of Default of this Agreement.