No ordinance shall contain more than one subject which shall be clearly expressed in the title. Ordinances may, by reference, adopt Washington state statutes, or any recognized, printed codes or compilations in whole or in part. All ordinances of the county of a general and permanent nature shall be incorporated into and become part of a Snohomish County Code. The county council shall establish by ordinance procedures to codify ordinances and to correct deficiencies and conflicts and to remove obsolete provisions from the code. Proposals for enactment of technical revisions to the code shall be submitted to the county council.