Except as permitted by Regulations .07 and .08 of this chapter, a person may not, within any airport zoning district created by this chapter: Build any structure, permit any structure to be built, or maintain any personalty to a height that would be a hazard to air navigation under the standards stated in COMAR 11.03.05.04; Substantially alter any existing structure or change the use of land; Permit any use of land that is prohibited by Regulation .06 of this chapter; As to any vegetation: Plant, replant, or allow any vegetation to grow to such a height as to be an airport hazard, or Allow any vegetation that is an existing airport hazard to grow any higher; Within the airport zoning district for Baltimore/Washington International Airport: Establish or construct any new structure; Make any new use of any existing structure or land; or Erect, use, or permit to be used a crane or other construction equipment higher than 10 feet above ground level; Build any structure, locate any personalty, or conduct any activity that would result in a frequent or significant congregation of people in any designated runway protection zone.