(a) Respectively:
(1) Land which the platting board finds to be unsuitable for subdivision or development due to flooding, improper drainage, steep slopes, adverse topography, rock formation, utility easements, or other features which are considered harmful to the health, safety, and general welfare of the present or future inhabitants of the subdivision and/or its surrounding areas or which may prove unreasonably burdensome to the city in the provision of services shall not be subdivided or developed unless adequate methods are formulated by the developer and approved by the platting board to solve problems created by the unsuitable land conditions;
(2) Existing features which would add value to residential development or to the city as a whole, such as watercourses, beaches, recreation areas, historic and cultural sites, and similar irreplaceable assets, shall be preserved in the design of the subdivision;
(3) No subdivision shall be approved which is not designed to accommodate the type of land use designated for the area of the proposed subdivision by the 1981 City of Sand Point Comprehensive Plan, Land Use Plan, Map.
(b) Roads.
(1) Access by dedicated right-of-way shall be provided to all subdivisions and lots within the subdivisions. Access shall be developed to city standards as specified in the 1981 City of Sand Point Comprehensive Plan at the sub-divider's expense. In addition, boardwalks to provide for pedestrian circulation shall be constructed in locations and in a manner specified by the 1981 City of Sand Point Comprehensive Plan and in such additional locations as the platting board shall specify. Blocks shall not be unreasonably long so as to impede movement of pedestrian traffic.
(2) The creation of reserve strips shall not be permitted. (See definitions.)
(c) Design criteria - general.
(1) The circulation system shall be designed to:
a. discourage through traffic in residential subdivisions;
b. require the minimum number of roads necessary to provide convenient and safe access to property;
c. be arranged so as to maximize the number of building sites at, or above, the grades of the roads;
d. avoid a combination of steep grades and curves;
e. conform as much as possible to existing topography;
f. use land in the most efficient way;
g. be properly related to all existing and proposed special traffic generators such as industries, business and shopping districts, schools and churches; to population densities; and to the pattern of existing and proposed land uses;
h. complement drainage patterns;
i. preserve natural features such as watercourses, geology, and the like;
j. allow for the provision and/or extension of public utilities and services.
(2) Roads from adjacent existing subdivisions shall be continued wherever possible and cul-de-sacs shall be minimized where possible.
(d) Design criteria - specific
(1) All roads shall be constructed in accordance with city standards as set forth in the 1981 City of Sand Point Comprehensive Plan, as recommended by Road Standard in the Comprehensive Plan.
(2) Alignment and grading:
a. Road alignment shall conform to the topography with a maximum allowable grade of 12% for major and collector roads and 10% for minor roads;
b. Embankments shall not exceed a two to one (2:1) slope.
(3) Right-of-way minimum width:
a. Minor roads - 40 foot right-of-way
b. Collector roads - 50 foot right-of-way
c. Major roads - 60 foot right-of-way
(4) Traffic ways shall be centered within rights-of-way except where the Alaska Department of Transportation and Public Facilities has offset the trafficway, or when unusual physical circumstances dictate otherwise.
(5) Cul-de-sac or dead-end roads:
a. A permanent turn-around of fifty feet radius shall be provided at the end of each cul-de-sac and dead-end road.
(6) Intersections:
a. Number of intersections, especially between roads of different classification, shall be kept to a minimum;
b. Not more than two roads shall intersect at one point;
c. Roads shall be laid out so as to intersect as nearly as possible at right angles;
d. No intersection shall be located near the brow of a hill or where an embankment blocks vision;
e. Proposed new intersections along one side of an existing road shall, wherever practicable, coincide with any existing intersections on the opposite side of such road;
f. All intersections shall have a grade not more than 3% per 100 feet from point of intersection.
(7) Easements:
a. Utility easements of 10 feet in width shall be provided for all utilities (electrical, telephone, sewer and water) on each side of a lot road frontage and side lot lines shown on plat with broken lines.
(8) Provided for drainage:
a. The platting board shall not approve any plat or subdivision which does not make adequate provision for storm or flood water runoff channels or basins. The storm water drainage system shall be separate and independent of any sanitary sewer system;
b. Where a subdivision is traversed by a watercourse, drainage way, channel, or stream, there shall be provided a storm easement or drainage right-of-way conforming substantially to the lines of such watercourse. Whenever possible it is desirable that the drainage be maintained by an open channel with adequate width for maximum potential volume of flow; such area shall not be filled or built upon and a note to this effect shall be placed on the plat;
c. The subdivider may be required by the platting board to carry away by pipe or open ditch any spring or surface water that may exist either previously to, or as a result of, the subdivision. Such drainage facilities shall be located in a right-of-way where feasible, or in perpetual unobstructed easements;
d. Where a watercourse separates the building area of a lot from the road by which it has access, provisions shall be made for installation of a culvert or other structure to provide access across the watercourse;
e. A culvert or other drainage facility shall in each case be large enough to accommodate potential runoff from its entire upstream drainage area, whether inside or outside the subdivision;
f. Where it is anticipated that the additional runoff incident to the development of the subdivision will overload an existing downstream drainage facility, the platting board may withhold approval of the subdivision until provision has been made for the improvement of the potential condition;
g. Whenever a plat is submitted for an area which has been designated as a flood-hazard area, the platting board may approve such subdivision only when it has determined that all provisions of the city regulation requiring compliance with the sensitive lands portion of this code, § 13.06.150, have been met;
h. When a proposed drainage system will divert water across private land outside the subdivision, appropriate drainage easements shall be secured and submitted with the preliminary plat;
i. Drainage and utility easements shall be independent unless shared easement is agreed to by utilities.
(9) Water supply:
a. Where a community water supply system is available within 200 feet of the perimeter boundaries of the proposed subdivision, such subdivision shall be connected to and serviced by that community water supply system. Such system shall be provided in the subdivision by the subdivider to standards of the Alaska Department of Environmental Conservation and the city;
b. Where a community water supply system is not available within 200 feet of the perimeter boundaries of the proposed subdivision, the platting board may require the subdivider to install a water supply system for the common use of the lots within the subdivision, such system to be provided to the standards established by the Alaska Department of Environmental Conservation and the city;
c. Where a community water supply is not available within 200 feet of the perimeter boundaries of the proposed subdivision, individual wells may be permitted if the subdivider can demonstrate that every lot within the proposed subdivision can be provided an adequate supply of potable water. The subdivider shall not be required to install individual wells.
(10) Waste disposal:
a. Where a community sewage disposal system is available within 200 feet of the perimeter boundaries of the proposed subdivision, such subdivision shall be connected to and serviced by that community sewage disposal system. Such system shall be provided in the subdivision by the subdivider to standards of the Alaska Department of Environmental Conservation and the city;
b. Where a community sewage disposal system is not available within 200 feet of the perimeter boundaries of the proposed subdivision, certification from the Alaska Department of Environmental Conservation that the areas of all lots within the proposed subdivision are adequate to accommodate individual waste disposal devices shall be required, or the subdivider shall be required to install a package treatment system approved by the Alaska Department of Environmental Conservation, prior to final plat approval. The subdivider shall not be required to install individual waste disposal devices.
c. All facilities for the supply of water and the disposal of waste, whether individual on-lot or serving more than one lot, including hook-ups to existing community systems, are subject to city ordinances and state standards. All such facilities must receive approval of the city prior to construction, installation, and/or operation. Additionally, plans for a system serving more than one connection must be submitted to, reviewed and approved by the Alaska Department of Environmental Conservation prior to construction and note to that effect shall be placed on the final plat.
(11) Street lights:
a. Street lights shall be installed on all streets (roads) fronting lots at a maximum distance of 200 feet to a standard and light identified in the 1981 Comprehensive Plan or required by the platting board.
(12) Blocks and lots:
a. The lengths, widths and shapes of blocks shall be such as are appropriate to the locality, the type of development contemplated and the topography and physical characteristics of the land;
b. Every lot shall front on a dedicated public road;
c. Double front shall not be permitted except when topography and/or ownership patterns dictate otherwise;
d. Lots should be designed with a suitable proportion between width and depth. Neither narrow nor wide shallow lots are desirable. Lots shall be as near to rectangular shape as possible;
e. Lots at right angles to each other should be avoided;
f. Side lot lines shall be substantially at right angles or radial to street lines;
g. Lots shall follow municipal boundary lines rather than cross them;
h. Lots shall be laid out so as to provide drainage away from all buildings and individual lot drainage shall be coordinated with the general storm drainage pattern for the area;
i. No cut trees, timber, debris, junk, rubbish, or other waste materials of any kind shall be buried in any land or left deposited on any lot or street and removal of the same shall be required prior to the time of expiration of the public improvements guarantee (see definitions) or dedication of public improvements, whichever is sooner;
j. Final grading must be completed in accordance with the approved final subdivision plat;
k. No more than 25% of the minimum required area of a lot may be under water;
l. Lot area shall not be less than the minimum size required by the appropriate zone;
m. Minimum lot area shall be 5,000 square feet for mobile home subdivisions, 8,000 square feet for single family dwelling unit subdivisions, and 6,000 square feet for multifamily dwelling unit subdivisions to a maximum of six units per acre, where complete and adequate community sewerage and water systems are provided and maintained by a government agency, local service district, home association, corporation, or similar entity;
n. Lots of a minimum area of 20,000 square feet shall be required where either an approved community water system or approved community sewage system is provided;
o. Minimum lot area shall be 40,000 square feet when only on-site water and sewage systems are utilized and all required state and federal regulations have been met;
p. Larger lot areas may be required by the platting board upon determination of the Alaska Department of Environmental Conservation;
q. For the purposes of this section, "width" shall be defined as the distance between straight lines connecting front and rear lot lines at each side of the lot, measured between the midpoints of such lines;
r. The front is considered as the part of the lot facing the road;
s. The minimum frontage of a public right-of-way shall be 60 feet;
t. Depth and width of properties reserved or laid out for commercial or industrial purposes shall be adequate to provide for the off-road service and parking facilities required by the type of use and development contemplated.
(e) To guarantee the installation of all public improvements required by this section which are not accepted at the time the final plat is filed, the subdivider shall be required to submit a public improvements guarantee at the time the final plat is submitted. (See definitions.)