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Sec 42-79 is what you seek. The first thing you need to find out is the zoning of your boss' property. Second, the exemption for your own residence is just that - your own residence. So, depending on the zoning of the property YOUR BOSS may be allowed to shoot less than 500 feet from HIS residence. Next time tell him to apply for the exemption listed in (e); that should be interesting.
Sec. 42-79. - Weapons; discharge.
(a) It shall be unlawful for any person to fire a shotgun, pellet gun or BB gun within the unincorporated area of the county within 150 feet of any residence, place of worship, business or public meeting place or roadway.
(b) It shall be unlawful for any person to fire any center fire or rim fire rifle, pistol or revolver or black powder weapon within the unincorporated area of the county within 500 feet of the residence of another located in zoning districts A-R, W-P or A-M; any place of worship, business or public meeting place or roadway; or within any unincorporated area of the county within zoning districts R-1, R-1B, R-2, R-3, O-I, C-1, C-2, M-1, M-2 and M-H.
(c) It shall be unlawful for any person to intentionally, negligently or carelessly discharge any firearm in such a manner as to be likely to cause bodily injury or death to persons or domestic animals or cause destruction of property.
(d) It shall be unlawful to discharge any weapon across the property line of another without first obtaining the permission of such property owner.
(e) Special activity permits may be granted as an exception to the provisions of this section by the sheriff's department. Applications for such permits must be submitted to the sheriff's department on the approved form provided by the sheriff's department.
(f) This section shall not apply to any law enforcement officer while in the discharge of his official duties, nor to any individual lawfully defending any person or property.
(Code 1978, § 9-5016)