The purpose of this section is to regulate marijuana producers, processors, and retailers regulated under Chapters 69.50 and 69.51A RCW by identifying appropriate land use districts and establishing development and performance standards. Marijuana producers, processors, and retailers shall only be permitted when licensed by the Washington State Liquor and Cannabis Board. The production, sale, and possession of marijuana remains illegal under the federal Controlled Substances Act. Nothing herein or as provided elsewhere shall be construed as authority to violate or circumvent federal law.