Upon the effective date of the ordinance codified in this chapter, any person who claims or believes that he or she has established a legal nonconforming use to conduct firearms sales, including sales of ammunition, shall within ninety (90) days of the effective date of the ordinance codified in this chapter provide written evidence describing the extent and scope of such use to the board of zoning adjustments. If a legal nonconforming use has been established, continued firearms sales may continue if all applicable state and federal permits and licenses have been obtained and maintained in good standing, and a valid firearms dealer’ s license has been issued by the county of Alameda. The nonconforming use may not be increased, enlarged or expanded without an additional land use permit as provided by this chapter and Chapter 17.54. (Ord. 2002-60 (part): Ord. 98-53 § 1 (part))