California Code, Streets and Highways Code - SHC § 3110

(a) The proposed boundaries of the district to be specially taxed or assessed in proceedings shall be described by resolution or ordinance adopted by the legislative body prior to the hearing on the formation or extent of the district. The description of the proposed boundaries shall be by reference to a map of the district that shall indicate by a boundary line the extent of the territory included in the proposed district and the map shall govern for all details as to the extent of the district. The map shall also contain the name of the city and a distinctive designation, in words or by number, of the district shown on the map.

(b) The map shall be legibly drawn, printed or reproduced by a process that provides a permanent record. Each sheet of paper or other material used for the map shall be 18 by 26 inches in size, shall have clearly shown therein the particular number of the sheet, the total number of sheets comprising the map, and its relation to each adjoining sheet, and shall have encompassing its border a line that leaves a blank margin one inch in width.

The map shall be labeled substantially as follows: Proposed Boundaries of (here insert name or number of district) (here insert name of city and county thereafter), State of California.

In addition, if the resolution of intention to create the district proposes that some or all tax or bond proceeds of the district would be used to pay for cleanup of any hazardous substance, the map label shall include the following statement in large, conspicuous letters:

TAXES LEVIED BY THIS DISTRICT MAY BE USED TO PAY FOR CLEANUP OF HAZARDOUS SUBSTANCES.

If the map consists of more than one page, the same entitlement shall be on each page.

The map shall also have thereon legends reading substantially as follows: