RTC §3381: (a) In each county where the tax collector or, if the county is a chartered county, the board of supervisors determines that the public interest, convenience and necessity require the local publicatio

(a) In each county where the tax collector or, if the county is a chartered county, the board of supervisors determines that the public interest, convenience and necessity require the local publication of the delinquent list required by Section 3371, or the published notice of power and intent to sell required by Section 3361, in order to afford adequate notice, all items required to be published shall be published as provided in this article. (b) After the determination, the tax collector or, if the county is a chartered county, the board of supervisors shall divide and distribute the items to be published and cause the same to be published either within (1) the municipal corporations, (2) the elementary, high school, or junior college districts, (3) the supervisorial districts, (4) public notice districts described in Chapter 1.1 (commencing with Section 6080) of Division 7 of Title 1 of the Government Code, (5) tax districts, areas included in map books, or tax code areas, or (6) by any annexation or annexations of same, or any combination of same, or any combination of those districts, annexations, areas included in map books, and tax code areas, within the county as they shall determine most likely to afford adequate notice to owners of the property. (c) Except as provided in this article, the publication shall be in the same manner as provided in Article 1.7 (commencing with Section 3371). (d) The publication provided for in this article shall be made once a week for two successive weeks in a newspaper or newspapers of general circulation. The publication shall be made in a newspaper published not less frequently than once a week.