23.06.030 Form and contents.
The tentative subdivision map shall be prepared in a manner acceptable to the department and shall be prepared by a registered civil engineer or licensed land surveyor. For subdivisions of average lot size of less than one acre, the scale shall be one inch equals 50 feet. For subdivisions of average lot size of one acre or more, the scale shall be one inch equals 100 feet. The tentative subdivision map shall be clearly and legibly drawn and shall contain not less than the following:
A. A title, which shall contain the subdivision number, subdivision name, and type of subdivision.
B. Name and address of legal owner, subdivider, and person preparing the map, including registration or license number and expiration date.
C. Sufficient legal description to define the boundary of the proposed subdivision.
D. The names and numbers of adjacent subdivisions and the names of owners of adjacent unplatted land.
E. Date, north arrow, scale, contour interval, and source and datum of existing contours.
F. A statement of present zoning and general plan designation and of existing and proposed uses of the property, as well as any proposed zoning changes, whether immediate or future.
G. A vicinity map showing roads, adjoining subdivisions, towns, creeks, and other data sufficient to locate the proposed subdivision and show its relation to the community.
H. Existing topography of the proposed site and at least 500 feet beyond its boundary including, but not limited to:
1. Existing contours at two-foot intervals if the existing ground slope is less than 10 percent and at not less than five-foot intervals for existing ground slopes equal or greater than 10 percent. Contour intervals shall not be spread more than 150 feet apart. Existing contours shall be represented by dashed lines or by screened lines.
2. Spot elevations shall be expressed to the nearest one-tenth (0.1) of a foot. On comparatively level terrain where contours are more than 100 feet apart, the contours may be omitted and spot elevations shall be shown at intervals.
3. At least 90 percent of all contours shall be within one-half contour of true elevation except that in areas where the ground is completely obscured by dense brush or timber, 90 percent of all contours shall be within one contour of true elevation. Contours in obscured areas shall be indicated by dashed lines.
4. Type and location of any wooded area or trees with a trunk diameter of four inches or more, measured at three feet from the lowest grade touching the tree. Any trees proposed to be removed shall be individually indicated.
5. The location and outline of existing structures and improvements, including but not limited to wells, septic tanks, landfills, driveways, utility poles and mine shafts (active and abandoned), identified by type. Structures to be removed or mine shafts to be filled shall be so marked.
6. The approximate location of all areas of potential storm water overflow; the location, width, and direction of flow of each water course; and the flood zone designation as indicated on the Flood Insurance Rate Map (FIRM), as defined in Title 32.
7. The location, pavement and right-of-way width, grade and name of existing streets or highways.
8. The widths, location and identification of all existing easements.
9. The location and size of existing sanitary sewers, fire hydrants, water mains and storm drains. The approximate slope of existing sewers and storm drains shall be indicated. The location of existing overhead utility lines on peripheral streets shall be indicated.
I. Proposed improvements to be shown shall include, but not be limited to:
1. The location, grade, centerline radius and arc length of curves, pavement, right-of-way width, and name of all streets. Typical sections of all streets shall be shown, proposed private streets shall be clearly indicated and shown improvements shall be consistent with adopted county improvement standards.
2. The location and radius of all curb returns and cul-de-sacs.
3. The location, width, and purpose of all easements.
4. The angle of intersecting streets if such angle deviates from a right angle by more than four degrees.
5. The approximate lot layout and the approximate dimensions of each lot and each building site. Engineering data shall show the approximate finished grading of each lot, the preliminary design of all grading, the elevation of proposed building pads, the top and toe of cut-and-fill slopes to scale, the number of each lot, and the elevation of adjacent parcels.
6. Proposed contours at two-foot intervals shall be shown if the existing ground slope is less than 10 percent and not at less than five-foot intervals for existing ground slopes of 10 percent or more. A separate grading plan may be submitted.
7. Proposed recreation sites, trails and parks for private or public use.
8. Proposed common areas and areas to be dedicated to public open space.
9. The location and size of sanitary sewers, fire hydrants, water mains and storm drains. Proposed slopes and approximate elevations of sanitary sewers and storm drains shall be indicated. The proposed routing of storm water runoff generated by a 100-year flood shall also be indicated.
10. A statement as to the intention of the subdivider in regard to slope planting and erosion control.
11. The standards set forth in this title.
J. The name or names of any geologist or soils engineer whose services were required in the preparation of the design of the tentative subdivision map.
K. The size of each sheet shall be 24 inches by 36 inches. A marginal line shall be drawn completely around each sheet, leaving an entirely blank margin of one inch. The scale of the map shall be not less than 1" = 100' or as may be necessary to show all details clearly, and enough sheets shall be used to accomplish this end. The particular number of the sheet and the total number of sheets comprising the map shall be stated on each of the sheets, and its relation to each adjoining sheet shall be clearly shown. When four or more sheets including the certificate sheet are used, a key sheet shall be included. All printing or lettering on the map shall be of one-eighth inch minimum height and of such shape and weight as to be readily legible on prints and other reproductions made from the original drawings. A master sheet showing the entire subdivision shall be included.
L. Reserved.
M. The plotting of general street and lot layout on aerial photos.
N. An agreement for indemnity as authorized by Cal. Gov’t. Code § 66474.9.
O. A written statement of general information on the following shall accompany the map:
1. Approximate construction phasing and sketch of the subdivision showing that each phase of construction is completed within one construction season.
2. A construction phasing schedule for all on-site and off-site improvements.
3. Proposed method of fire protection and, if applicable, approval of the fire district within which the subdivision is located.
4. Plans for draining areas subject to inundation.
5. Proposed deed restrictions.
6. Proposed method of assuring proper administration and maintenance of common areas and open space.
7. Other improvements proposed.
P. Upon the written request of the subdivider, the Planning Department may waive any above tentative map information requirements of this Chapter 23.06 SCC, if the Planning Department determines that the type of subdivision does not justify compliance with these requirements, or if the Planning Department determines that other circumstances justify a waiver. The Planning Department may require other drawings, data or information as deemed necessary by the Planning Department to accomplish the purposes of the Subdivision Map Act and this title. A denial of a waiver is a nonappealable decision. (Formerly 23.06.003)