The map shall show the side lines of each street, the total width of each street, the width of the portion being dedicated, and the widths of existing dedications. The widths and locations of adjacent streets and other public properties shall be shown. If any street in the subdivision is a continuation, or approximately a continuation, of an existing street, the conformity or the amount of nonconformity of such street to such existing street shall be accurately shown. Whenever the county surveyor has established the centerline of a street or alley, the data shall be shown on the final or parcel map. All streets, as far as practicable, may be required to be in alignment with adjacent streets or their proper projections and shall be in general conformity with the most advantageous development of the area affected by such subdivision.
(Ord. 409, 1981)
Each street designated as a major collector street shall conform in width to the standard specifications of the county road department and the Inyo County general plan or any modifications thereof approved by the advisory agency.
(Ord. 409, 1981)
Each street extending from one major or secondary highway to another and all other streets in such subdivision, except major or secondary highways, shall have a width of not less than sixty feet and a roadway width of not less than forty feet; provided, that where, in the opinion of the advisory agency, the type of adjacent development or other economic factors renders it advisable, streets less than two blocks in length or one thousand two hundred feet, whichever is shorter, in residential districts may have a lesser width but not less than fifty-six feet and a roadway width of not less than thirty-six feet.
(Ord. 409, 1981)
Where necessary to give access to or permit a satisfactory future subdivision of adjoining land, streets shall extend to the boundary of the property and the resulting dead-end streets may be approved without turnarounds. In all other cases, turnarounds having minimum radii of fifty feet, with curb radii of thirty-eight feet shall be provided except where extraordinary conditions make a strict enforcement of this rule impracticable.
(Ord. 409, 1981)
A. 
Any land intended to be a part of the ultimate width of a future street or highway, or any road easement therefor, lying along and adjacent to any boundary of the subdivision, shall have such a width as will conform to the designated lines.
B. 
Subject to all of the provisions of Section 16.16.050, any land intended to be a part of the ultimate width of a highway or street, or any road easement therefor, lying along and adjacent to any such boundary, shall have a width not less than one-half of the full width required for any such highway or street by the provisions of such section unless special conditions of alignment require some other width.
(Ord. 409, 1981)
A. 
With approval of the advisory agency, any street or highway which is intended to be kept physically closed to public travel or at all times posted as a private street may be shown as a private street. In any such case, the final map or parcel map shall contain an offer of dedication of such private street. A plan and profile of any such street as required by Section 16.40.020 must accompany the final map or parcel map. The side lines of private streets shall be shown in broken lines and the area of the private streets shall be shown as a part of the lots adjacent to the private streets.
B. 
Where the subdivider files a final map or parcel map, all private streets shall meet the requirements prescribed by this title for public streets.
C. 
All private streets within the county shall be posted as private streets.
(Ord. 409, 1981)
Any highway or street intersecting any other highway or street shall intersect at an angle as near a right angle as is practicable. At street intersections which include major or secondary highways, intersecting at an angle of approximately ninety degrees, the block corner shall be rounded at the property line by a radius of not less than twenty feet. At intersections of other streets, the radius shall be not less than fifteen feet. An optional method of a diagonal cutoff may be used; provided, that the dimensions thereof do not reduce the visibility, sidewalk width or curb radius obtained by the above specified radii. The curb radius may be required to conform to the radius of existing corners at the same intersection where such radius is greater than fifteen feet. Streets intersecting at an angle other than ninety degrees shall have sufficient radius or cutoff to provide the same results as to traffic movements, visibility and design as provided by the foregoing requirements of this section.
(Ord. 409, 1981)
A. 
Wherever any highway within a division of land intersects any railroad right-of-way, and such highway is designated as a major or secondary highway, and provision is made for the location of a separation of grades at such intersection, the street layout of the division of land shall be such as to conform to the plan of such a separation.
B. 
Each lot abutting upon a proposed cut or fill necessary for the approach to such grade separation shall be given suitable access elsewhere.
C. 
Wherever it is proposed to divide property abutting an approach to an existing or proposed bridge, the street layout shall adequately provide for such approach and the division shall be arranged so that any lot abutting such approach has suitable access elsewhere.
(Ord. 409, 1981)
No street or highway shall be approved with a centerline curve radius of less than one hundred feet unless sufficient evidence is offered to the county engineer by the subdivider which shows that the one-hundred-foot radius is not practicable. All centerline curve radii on all streets and highways shall conform to accepted engineering standards of design and shall be subject to approval by the county engineer.
(Ord. 409, 1981)
No street or highway shall have a grade of more than seven percent nor less than half percent unless, because of topographical conditions or other exceptional conditions, the county engineer determines that a grade in excess of seven percent is necessary.
(Ord. 409, 1981)
Alleys at least twenty feet in width, or other adequate off-street loading facilities shall be required in the rear of all lots used or intended to be used for business purposes. In other cases, the provisions for alleys shall be optional with the subdivider; provided, that such alleys shall be not less than twenty feet in width. Where two alleys intersect, a corner cutoff of not less than ten feet measured from the point of intersection along the side line of the alley shall be required.
(Ord. 409, 1981)
The street and alley arrangement shall be such as the advisory agency may determine will cause no undue hardship to owners of adjoining property when they subdivide their land and adequate and convenient access to adjoining property shall be required.
(Ord. 409, 1981)
Each street which is to be dedicated, which is a continuation of, or approximately the continuation of, any existing dedicated street shall be shown on the tentative map and shall be given the same name as such existing street. The proposed name of each other street shown on the tentative map shall be submitted to the county engineer for his approval, and if such name is not a duplication of or so nearly the same as to cause confusion with the name of any existing street located in the county, or in close proximity thereto, and if such name is appropriate for a street name, such name shall be approved by him.
(Ord. 409, 1981)
Wherever the advisory agency determines that a street is necessary for the future division of property as shown on the tentative map or for adjoining property, but that the construction of such street is not warranted, the advisory agency may require that the location, width and extent of such street shall be shown on the final map or parcel map as a future street and offered for dedication. No improvement of such future street shall be required of the subdivider.
(Ord. 409, 1981)
A. 
Where the provisions of Section 16.40.010 have been modified and where underground conduit system is not provided by the owner in public streets, easements not less than six feet in width shall be provided within the subdivision for public utilities purposes on each side of rear lot lines and along side lot lines where necessary.
B. 
A four-foot-by-forty-foot easement for public utilities may be required at all rear line angle points. Easements for water mains shall be provided as required under Section 16.40.010. Easements of lesser width may be permitted when approved by the advisory agency and serving utilities.
C. 
The side lines of all easements shall be shown by fine dotted lines. If any easement already of record cannot be definitely located, a statement of the existence, the nature thereof and its recorded reference must appear on the map. Distances and bearings on the side lines of lots which are cut by an easement must be arrowed or so shown that the map will indicate clearly the actual lengths of the lot lines. The widths of all easements and sufficient ties thereto in order to definitely locate the same with respect to the subdivision must be shown. All easements must be clearly labeled and identified. If an easement shown on the map is already of record, its recorded reference must be given. If an easement is being dedicated by the map, it shall be set out in the owner's certificate of dedication. All notes and figures pertaining to easements shall be considerably smaller and lighter than those relating to the subdivision itself.
D. 
The county may require the subdivider to remove or trim any trees or brush lying within an easement or right-of-way.
(Ord. 409, 1981)
A. 
Each parcel created by any division of land shall be provided with a means of vehicular access as provided by this section. For the purposes of this section, "on-site access" refers to a road easement for vehicular access which is located within the boundaries of the land division, and "off-site access" refers to a right-of-way for vehicular access which is located outside the boundaries of the land division, and is not an improved or maintained public street or highway. A parcel has approved access when either of the following conditions apply:
1. 
The parcel has frontage on an improved or maintained public street or highway or on approved off-site access which connects with a public street or highway;
2. 
The parcel has frontage on road easement for on-site access as shown on an approved map, and such road easement connects directly or by means of approved off-site access with an improved or maintained public street or highway.
B. 
Road easements for on-site access shall be located so as to provide for future development of parcels adjacent to them. On-site road easement shall be a minimum sixty feet in width; except that road easements peripheral to the land division shall be a minimum thirty feet in width; when, in the opinion of the advisory agency, topography permits future widening of the road easement within a contiguous property.
C. 
Off-site access shall be an easement, for road purposes recorded in the office of the county recorder, having a minimum width of thirty feet on one side of a normal section breakdown line or title line, or a minimum of forty feet in other locations, and an alignment which is defined and is topographically feasible for the passage of vehicles.
(Ord. 409, 1981)
Blocks shall not exceed one thousand three hundred feet in length between street lines, except where topographical conditions or previous surrounding layout require longer blocks, that justify or require a variation from this requirement.
(Ord. 409, 1981)
The width of each block shall be sufficient for an ultimate layout of two tiers of lots therein of a size required by the provisions of this title unless the surrounding layout, lines of ownership, or topographical conditions justify or make necessary a variation from this requirement.
(Ord. 409, 1981)
For subdivision purposes, the minimum lot sizes shall be the same as shown in Title 18 of this code. (Zoning ordinance). See Title 18 for minimum lot sizes.
(Ord. 409, 1981)
A. 
The advisory agency, in considering the design of a proposed subdivision, shall take into consideration the character of the land and improvements in the neighborhood, the character of the land to be subdivided and the improvements proposed by the subdivider and the general effect upon the neighborhood of the proposed subdivision.
B. 
Lot design shall meet the standards as shown in Title 18 of this code. Lot frontage on cul-de-sacs shall be a minimum of forty feet.
(Ord. 409, 1981)
In all cases where practicable, the side lines of lots shall be at an approximate right angle to the street upon which such lots front.
(Ord. 409, 1981)
Reserved strips controlling the access to streets or other public rights-of-way from adjoining property will not be approved unless such strips are necessary for the protection of the public welfare or of substantial property rights, and in no case except in which the control and disposal of the land comprising such strips are placed definitely within the jurisdiction of the county under conditions approved by the advisory agency.
(Ord. 409, 1981)
A. 
Runoff design shall be made for the frequency of occurrence hereinafter stipulated in these standards of modified rational methods using basic data in accordance with the requirements set forth in the standard specifications for public improvements. Runoff design shall accommodate the full and future developments within the drainage area. In cases where such drainage areas are underdeveloped, fully improved conditions shall be determined for future conditions as indicated in the general plan and by the zoning ordinance. Any outlet channel required to carry stormwater from the proposed subdivision to a defined drainage channel or conduit shall be in accordance with these standards for the ultimate stage of development in the drainage area resulting from the particular subdivision.
B. 
Primary drainage channels and conduits shall have sufficient capacity to contain a one-hundred-year frequency of occurrence runoff.
C. 
Minor drainage channels or conduits shall have sufficient capacity to contain a fifty-year frequency of occurrence runoff, including undefined overflow originating within the tract or adjacent thereto.
D. 
Stormwaters within street areas shall be placed in closed conduits when the maximum depth of in-gutter runoff computed in accordance with the provisions of the specifications exceeds five inches at the gutter.
E. 
Proposed subdivision shall not cause inundation or flood hazard conditions of existing inhabited areas.
F. 
Drainage shall be accomplished by gravity without surcharge into catch basins or manholes except by design.
G. 
Catchbasins shall have inlets of varying lengths so designed that the water is diverted into the catch basin without a reversed direction of the flow of the water. The inlets shall be designed in accordance with the standard specifications for public improvements of the county engineer.
H. 
Drainage channels, conduits and appurtenances shall meet the approval of the county engineer.
(Ord. 409, 1981)
A preliminary soils report shall be prepared pursuant to Section 66490 of the Subdivision Map Act by a civil engineer registered in this state for every subdivision for which a final map is required. The preliminary soils report may be waived by the advisory agency where that agency determines, due to the knowledge it has as to the soil qualities of the soils of the subdivision, that no preliminary analysis is necessary.
(Ord. 409, 1981)