Prior to submitting a tentative map, a subdivider shall submit to the Planning and Development Director twelve (12) copies of a preliminary map and such additional copies as may be required for transmission to interested public and private agencies. At the time of filing the preliminary map, the subdivider shall pay to the Planning and Development Director the applicable fee set forth in Article 5 of this Chapter to defray the expenses incidental to processing the map. Upon submittal, the Planning and Development Director shall transmit one (1) copy of the preliminary map to each of the other members of the Site Plan Review Committee established pursuant to section 16.2 of the Zoning Ordinance, together with requests for recommendations thereon. Additional copies of the preliminary map shall be transmitted to the County Fire Warden and to each public and private agency to which a copy of the tentative map will be transmitted, in accordance with section 7-01-1695 of this Chapter, with a request for recommendations on the proposed subdivision.
In the event the subdivider wishes to file the tentative map without filing a preliminary map, he may file with the Planning and Development Director an application for waiver of the preliminary map requirement. The application shall fully state the grounds for the waiver and, in particular, why the filing of the preliminary map would not serve the purposes set forth in section 7-01-1000 of this Chapter. The subdivider shall pay the applicable fee set forth in Article 5 of this Chapter to the Planning and Development Director to defray the expenses of processing the application for waiver. If the Planning and Development Director determines that filing of the preliminary map and holding a design conference will not serve the purposes set forth in section 7-01-1000 of this Chapter, he may waive the requirements for filing a preliminary map; however, the Planning and Development Director may not under any circumstances waive the filing of a preliminary map for a subdivision for which a vesting tentative map is to be filed or for a subdivision to be located within the boundaries of a zone, established pursuant to the Zoning Ordinance, which requires a site plan review for subdivisions.
The preliminary map shall be complete as to form and contain the information required by section 7-01-1600 of this Article. The preliminary map shall be clearly and legibly drawn. The size of the sheet shall be appropriate to allow proper review, as determined by the Planning and Development Director. The scale of the map shall be one (1) inch equals one hundred (100) feet or a decimal fraction or a multiple of one hundred (100) feet.
The preliminary map shall contain the following information:
(a) 
Location of proposed subdivision with reference to section, township and range.
(b) 
Names and addresses of record owner and subdivider.
(c) 
Name and address of person who prepared the map.
(d) 
Date of preparation.
(e) 
North point.
(f) 
Scale and graphic scale.
(g) 
Boundaries of the proposed subdivision.
(h) 
Locations of streets, alleys and pedestrianways within the proposed subdivision.
(i) 
Names and locations of streets and alleys adjacent to the proposed subdivision.
(j) 
Suggested locations of street extensions and street connections in surrounding unsubdivided properties.
(k) 
Approximate grades of all streets or parts of streets exceeding six percent (6%).
(l) 
Lot lines and approximate dimensions.
(m) 
Locations of proposed public areas.
(n) 
Locations of permanent physical features affecting the design of the proposed subdivision, including any hazardous areas as specified in section 7-01-1465 of this Chapter.
(o) 
The specific use intended for each lot in the subdivision.
(p) 
Approximate contour lines if necessary to illustrate the influence of topographic conditions on the design of the subdivision. An aerial photograph or a topographic model of the property may be submitted in lieu of indicating contour lines on the preliminary map.
(q) 
Locations and names of watercourses, location of floodway and or selected flood lines together with the elevation of the base flood, and location of areas subject to ponding of surface water.
(r) 
A tentative drainage plan indicating provisions for drainage and storm water control and, for any area which is located within selected flood lines, the proposed method of flood protection.
(s) 
If a vesting tentative map is to be filed, the preliminary map shall have printed conspicuously on its face the words "Preliminary Map for Vesting Tentative Map."
If the property proposed to be subdivided is located within the boundaries of a zone, established pursuant to the Zoning Ordinance, which requires a site plan review for subdivisions, a site plan and associated documents prepared in accordance with the requirements of the Zoning Ordinance shall be submitted with the map. The information required to be shown in a preliminary site plan may be incorporated onto the preliminary map rather than on a separate document.
(a) 
The preliminary map shall be accompanied by a preliminary geological hydrological report prepared by a registered civil engineer or a registered geologist.
(b) 
If the Planning and Development Director determines that sufficient accurate information is already available with regard to any or all of the matters to be covered in a preliminary geological hydrological report, he may waive a report on such matters.
(c) 
The preliminary geological- hydrological report shall contain a general analysis of the following factors with regard to the property to be subdivided:
(1) 
Geological structure of the property, including the identification of all potential geological hazards which can be ascertained.
(2) 
A general report on the several matters that will be covered in more detail in the final geological hydrological report to be submitted at a later date pursuant to section 7-01-1725 of this Chapter.
(3) 
Stability of soil for cuts and fills.
(4) 
Seismicity.
(5) 
Probability of a permanent ground water supply on the property adequate to supply the anticipated needs of the subdivision.
(6) 
Potential erosion and sedimentation problems.
(7) 
Other special factors deemed to be pertinent to the proposed subdivision by the person preparing the report.
(d) 
The preliminary geological hydrological report, and the final geological hydrological report if required under section 7-01-1725 of this Chapter, shall serve as a basis for decisions pertaining to adequacy and safety of the water supply, the suitability of soils for subdivision and the suitability of the site with regard to other geological characteristics.
At the time of filing the preliminary geological-hydrological report the subdivider shall pay the initial fee set forth in Article 5 of this Chapter to the Planning and Development Director to defray the expenses of the County Health Officer in reviewing the report. The County Health Officer shall keep accurate records of the actual costs associated with the review. Upon completion of the design conference required in section 7-01-1630 of this Article, the Health Officer shall bill the subdivider for the actual costs of the review in excess of the initial fee and the subdivider shall pay the cost thereof to the Health Officer. The Planning and Development Director shall withhold acceptance of the tentative map pursuant to section 7-01-1695(d) of this Chapter until the fee for the Health Officer’s review of the preliminary geological-hydrological report is paid.
At the time of filing the preliminary map, the subdivider shall file an application with the Planning and Development Director for the environmental studies and reports required for the proposed subdivision under the Environmental Quality Act of 1970 (Public Resources Code section 21000 et seq.). Thereafter, the subdivider shall, from time to time, provide such fees, additional data and information as may be required by the Planning and Development Director to complete the required studies and reports under said law and the rules and regulations adopted pursuant thereto.
Within ten (10) days after the date of submission of the preliminary map, the Site Plan Review Committee established pursuant to section 16.2 of the Zoning Ordinance, shall conduct a design conference with the subdivider. Representatives of the Fire Warden, cities, school districts, water districts, irrigation districts, community service districts, the State Division of Highways, utility companies and other public and private agencies affected by the proposed subdivision may attend the design conference. The Planning and Development Director, the Public Works Director, the Health Officer, and the Fire Warden or their authorized representatives shall make recommendations to the subdivider regarding the conformity of the preliminary map with the provisions of this Chapter and other applicable ordinances and regarding possible improvements in the design of the subdivision plan. Representatives of public and private agencies to which the preliminary map was transmitted may make recommendations to the subdivider regarding the proposed subdivision.
The Planning and Development Director shall furnish a written report of the recommendations presented at the design conference to the subdivider, the other members of the Site Plan Review Committee, the Planning Commission and to each public and private agency to which a copy of the preliminary map was submitted. In those cases in which the Board of Supervisors will be taking final action on the tentative map, a copy of said report shall be filed with said Board.
(a) 
Subsequent to the preliminary design conference, if one is held, and at least ten (10) days before filing a tentative map, the subdivider shall file with the Planning and Development Director a master plan of all of the lands adjacent to the proposed subdivision which are owned by him and which constitute a potential subdivision. The subdivider may also include adjacent land owned by other persons. The master plan shall consist of the following:
(1) 
A generalized layout of a road pattern.
(2) 
An indication of the type and functional relationship of the proposed land uses.
(3) 
Such additional designs and elements as the Planning and Development Director may require in order to evaluate the proposed subdivision.
(b) 
The Planning and Development Director may waive the requirement of a master plan in connection with a proposed subdivision if he determines that a master plan would not be necessary to evaluate the proposed subdivision. Said master plan shall be furnished, unless waived by the Planning and Development Director, even though the Planning and Development Director has waived the filing of a preliminary map and the holding of a design conference.