The preparation and processing of tentative minor land division maps shall be carried out in accordance with the provisions of Chapter 21.48. All other tentative maps shall be prepared and processed in accordance with this Chapter 21.40. (Ord. 11665 § 23, 1978; Ord. 9404 § 8 (part), 1967: Ord. 4478 Art. 6 § 81, 1945.)

A tentative map shall be submitted to the advisory agency and approved in accordance with the provisions of the Subdivision Map Act and of this Title 21 prior to the submission for approval of a parcel map or final map of a subdivision or of a reversion to acreage of land previously subdivided. (Ord. 11665 § 24, 1978: Ord. 10965 § 11, 1974: Ord. 4478 Art. 6 § 82, 1945.)

A. The Los Angeles County Flood Control District shall act as a consultant to the department of regional planning and consider all applications for a subdivision relating to flood control and flood hazard identification, avoidance and mitigation in all areas delineated on maps furnished to the department.
B. The District shall provide the department of regional planning with a series of maps delineating areas subject to flood, mud and debris hazards. The maps shall be prepared by the District, shall be based upon the best currently available information, and shall be updated at least annually.
C. The department of regional planning shall consult with the District with respect to such application affecting property in the hazard areas delineated on the maps.
D. The District shall prepare written reports of its examination of each application affecting property in the hazard areas delineated on the maps.
E. The reports shall be considered by the department, the advisory agency and the board of supervisors in acting upon the applications. The actions upon the applications shall be supported in writing. (Ord. 85-0194 § 3 (part), 1985; Ord. 12291 § 1, 1980: Ord. 4478 Art. 6 § 83, 1945.)

A tentative map shall be prepared by a registered civil engineer or licensed surveyor. (Ord. 7776 § 1 (part), 1960: Ord. 4478 Art. 6 § 88, 1945.)

A. The tentative map shall show and contain, or be accompanied by, the following matters as an aid to the advisory agency in its consideration of the design of the division land:
1. The map number;
2. Sufficient legal description of the land as to define the boundaries of the proposed division of land;
3. Name and address of subdivider and of registered civil engineer or licensed surveyor who prepared the tentative map;
4. The locations, names and existing widths of all adjoining highways, streets or ways;
5. The width and approximate grades of all highways, streets and ways within such proposed division of land;
6. The widths and approximate locations of all existing and proposed easements, whether public or private, including but not limited to those for roads, drainage, sewage disposal, fire fighting access and public utility purposes. The subdivider or his agent shall certify by an affidavit or by a declaration made under penalty of perjury pursuant to Section 2015.5 of the Code of Civil Procedure that all existing easements of record are shown on the tentative map;
7. Approximate radius of all curves;
8. The approximate lot layout and the approximate dimensions of each lot;
9. Approximate locations of all areas subject to inundation or stormwater overflow, and the locations, widths and directions of flow of all watercourses;
10. Source of water supply, if any;
11. Proposed method of sewage disposal. Where public sewers are not available and where private sewage disposal systems will be utilized, the results of percolation tests shall be submitted in accordance with the recommendations of the health officer. The location of any existing sewage disposal system which is proposed to remain in the division of land shall be shown on the tentative map;
12. The proposed use of the property, including the number of dwelling units contained in each of the following:
a. Detached single-family residences;
b. Attached single-family residences (townhouses), two-family residences and/or apartment houses containing fewer than five dwelling units;
c. Apartment houses containing five or more dwelling units; and
d. Mobile homes;
13. Proposed public areas, if any;
14. Approximate contours at sufficient intervals to determine existing topography and all proposed grading. Proposed grading shall be shown in a manner that clearly demonstrates compliance with Appendix Chapter 33 (of Title 26 of the Los Angeles County Code);
15. Date, North point and scale;
16. Number for each lot;
17. Approximate location of each area covered by trees, with a statement of the nature of the cover and the kind and approximate location of all trees standing within the boundaries of the proposed public rights-of-way;
18. Approximate location and outline to scale of each building or structure which is not to be moved in the development of the division of land;
19. Each street shown by its actual street name or by temporary name or letter for purposes of identification until the proper name of such street is determined;
20. When required by the county engineer, a geological report, prepared by an engineering geologist certified by the State Board of Registration for Geologists of the State of California, which states whether or not the property to be divided is subject to an existing or potential geological hazard and which discusses how geological conditions will affect the proposed development. The report shall be submitted in hardcopy format and also in an electronic version on a compact disc in Adobe® Portable Document Format (PDF) with searchable text. The report shall include the engineering geologist’s seal, signature, license number, and the date on which the engineering geologist signed and affixed his or her seal to the report;
21. In a division of land consisting of a condominium project as defined in Section 1350 of the Civil Code, a community apartment project as defined in Section 11004 of the Business and Professions Code, or a lease project as defined in this Title 21, a tentative map shall comply with the requirements of Section 21.16.015. In a mobile home division of land, as defined in this Title 21, a tentative map shall show the general location of all buildings, structures and mobile home spaces to be maintained or constructed, and the means of access thereto;
22. A written statement by the registered civil engineer or land surveyor as to whether or not he will set boundary monuments prior to filing with the county recorder of the final map;
23. A statement of the existing zoning and, if a zone change is proposed, the requested zoning for all real property within the division of land;
24. A vicinity map showing the location of the division in relating to the nearest existing cross streets;
25. Three prints of the most recent assessor Map Book page or pages covering the proposed division of land;
26. Such other information as the advisory agency may require.
B. If it is impossible or impracticable to place upon the tentative map any matter required by this section, such information shall be submitted with the map. (Ord. 2005-0058 § 1, 2005: Ord. 2002-0009 § 3, 2002; Ord. 85-0009 § 1, 1985; Ord. 82-0258U § 3, 1982; Ord. 11904 §§ 2--6, 1979; Ord. 11681 § 4, 1978: Ord. 11127 § 3, 1975; Ord. 10382 § 2, 1971: Ord. 9071 § 9 (part), 1966: Ord. 8822 § 3, 1965: Ord. 8792 § 3, 1965; Ord. 8500 § 3, 1963; Ord. 7776 § 2, 1960; Ord. 7646 § 2, 1959; Ord. 7634 § 6, 1959; Ord. 4478 Art. 6 § 94, 1945.)

The county engineer shall assign all map numbers for tentative, final and parcel maps. Before submitting a tentative map, the registered civil engineer or licensed surveyor shall obtain a map number from the county engineer. (Ord. 10382 § 1, 1971: Ord. 9721 § 7, 1969: Ord. 9071 § 7 (part), 1966: Ord. 7646 § 1, 1959: Ord. 4478 Art. 6 § 91, 1945.)

Each tentative map shall be eight inches by 12 inches, or any multiple thereof, and shall be drawn to such scale as to clearly show the details of the plan thereon. Wherever practicable, such scale shall be a scale of one inch to 100 feet. (Ord. 4478 Art. 6 § 92, 1945.)

When a tentative map is submitted, the advisory agency may require the subdivider to show any of the following:
A. That he is the owner of the property shown on the map as proposed for the division of land;
B. That he has an option or contract to purchase the property or that portion of which he is not the owner;
C. That he is the authorized agent of one who can comply with the requirements of subsection A or B of this section. (Ord. 85-0194 § 3 (part), 1985; Ord. 9071 § 8, 1966; Ord. 4478 Art. 6 § 93, 1945.)

A. The subdivider shall submit a preliminary soils report with each tentative map when required by the county engineer.
B. The report shall be prepared by a registered civil engineer and be based upon adequate test borings or excavations.
C. The report shall be submitted in hardcopy format and also in an electronic version on a compact disc in Adobe® Portable Document Format (PDF) with searchable text. The report shall include the civil engineer’s seal, signature, license number, and the date on which the civil engineer signed and affixed his or her seal to the report. (Ord. 2005-0058 § 2, 2005: Ord. 11665 § 25, 1978: Ord. 4478 Art. 6 § 94.1, 1945.)

A. For a tentative map to be deemed submitted and filed, the following matters must be completed and received:
1. All documentation required by the director of planning for the preparation of the environmental assessment;
2. The matters required by Sections 21.16.015, 21.40.040, 21.48.040 and 21.48.050; and
3. The fees paid in accordance with Section 21.62.080.
B. The time periods specified in Section 21.48.090 and Section 66452.1 of the Subdivision Map Act shall not commence until the tentative map submission and filing have been completed. (Ord. 2003-0017 § 5, 2003: Ord. 2002-0009 § 4, 2002; Ord. 11904 § 1, 1979: Ord. 4478 Art. 6 § 89.1, 1945.)

The advisory agency may require as a condition of approval of a tentative map that the subdivider produce evidence that the property as divided will have access to a public street or highway. (Ord. 9721 § 9, 1969: Ord. 4478 Art. 6 § 98.3, 1945.)

The subdivider shall submit to the advisory agency as many copies of a tentative map as are required by the agency. (Ord. 9071 § 9 (part), 1966: Ord. 4478 Art. 6 § 95, 1945.)

Upon the submission to the advisory agency of a tentative map and the requisite number of copies thereof, the said agency shall transmit copies thereof to members of the subdivision committee as listed in Section 21.12.010 and to other agencies having an interest in the proposed division of land. (Ord. 9071 § 9 (part), 1966: Ord. 7634 § 7 (part), 1959: Ord. 4478 Art. 6 § 96, 1945.)

The advisory agency is authorized to approve, conditionally approve, or disapprove tentative maps, and to exercise the responsibilities of the board of supervisors under the provisions of Sections 66473.5, 66474, 66474.1 and 66474.6 of the Subdivision Map Act. (Ord. 11665 § 26, 1978: Ord. 9071 § 9 (part), 1966: Ord. 8154 § 1, 1962: Ord. 4478 Art. 6 § 97, 1945.)

The advisory agency and the board of supervisors may reject a tentative map if the only practical use which can be made of the property as proposed to be divided is a use prohibited by any ordinance, statute, law, or other valid regulation. (Ord. 85-0194 § 3 (part), 1985; Ord. 9071 § 11 (part), 1966: Ord. 4478 Art. 6 § 98, 1945.)

A. The approval of a tentative map shall be effective for a period of two years.
B. The advisory agency may grant one or more extensions to the terms of approval of a tentative map. Each extension shall be for no more than one year and the sum of such extensions shall not exceed three years. The subdivider shall submit a written request to the advisory agency for such extension before expiration of the map.
C. If the advisory agency denies the subdivider’s application for an extension, the subdivider may appeal to the legislative body within 15 days after the action of the advisory agency. (Ord. 92-0035 § 1, 1992: Ord. 87-0170 § 1, 1987: Ord. 86-0040 § 3 (part), 1986: Ord. 82-0255 § 4, 1983: Ord. 82-0197 § 1, 1982: Ord. 11665 § 28, 1978: Ord. 10382 § 3, 1971: Ord. 9071 § 11 (part), 1966: Ord. 8154 § 2 (part), 1962: Ord. 4478 Art. 6 § 98.1, 1945.)