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(A) Streets and alleys, where appropriate, shall be provided subject to approval by the review authority and subject to the following standards unless exceptions are approved by the Planning Commission as recommended by the Planning Director and Director of Public Works consistent with safe and efficient flow of pedestrian and vehicular traffic:
(1) Widths. Streets and alleys shall be provided with a minimum width of 20 feet or greater as determined by the Town Engineer and Planning Director and approved by the review authority.
(2) Intersections. Streets shall intersect at a right angle or near approximate.
(3) Grades. Grades shall not exceed six percent on major or secondary highways, ten percent on major residential streets or 20 percent on any street.
(4) Alleys. May be required in the rear of all prospective business property and shall be subject to intersection design and point of intersection consistent with safe and efficient flow of pedestrian and vehicular traffic.
(5) All streets and highways shall be graded, rocked and paved or surfaced to widths and grades as provided herein and in accordance with the approved improvement plan.
(6) The subdivider shall make application with the Town Engineer for an encroachment permit to do work within the rights of way of existing town streets and shall, under the terms of the permit, improve the extension of all subdivision streets, highways or public ways to the intercepting paving of any town streets.
(7) Concrete curbs and gutters conforming with the uniform construction standards of the cities and County of Marin shall be required along all streets and highways.
(8) Roadbeds shall be designed according to soil tests of the subgrade material, and in accordance with the standard procedure used by the California Department of Transportation in the design of roads under their jurisdiction or by such other method as is in general use and considered sound practice.
(a) Minimum aggregate base shall be six inches in thickness, placed over the properly prepared subgrade.
(b) Where asphaltic pavement is used, there shall be a minimum of two and one-half inches of asphaltic surfacing, as approved by the Town Engineer.
(c) Where Portland cement (P.C.) concrete paving is used, the minimum thickness shall be six inches, Class B, P.C. concrete.
(B) Four-foot wide pedestrian ways shall be provided on at least one side of the street as determined by the Director of Public Works and Planning Director and approved by the review authority.
(1) Pedestrian ways ten feet in width and paved shall be required along all business streets. Pedestrian ways, curbs and gutters shall be constructed of Class B concrete in accordance with the most current standards in effect for quality and durability.
(2) Pedestrian ways of a width determined by the Planning Director and approved by the review authority may also be required through the center of long blocks, to connect cul-de-sac streets and to provide access to school, park and playground areas and to river, stream, lake, bay and ocean frontages.
(3) Pedestrian ways may be eliminated on both sides of streets where the Director of Public Works and Planning Director determine that the slope of the ground or the nature of the development makes them impractical or inappropriate and the review authority concurs.
(C) The Town Engineer or designee shall make such inspections as deemed necessary to insure that all construction is in accordance with the approved improvement plan, and in no case shall the inspection be less than:
(1) An inspection of the subgrade prior to placing the aggregate base;
(2) An inspection of the aggregate base prior to placing of surfacing;
(3) The inspection of concrete forms;
(4) The inspection of the pouring of any concrete or spreading of asphalt;
(5) All other structures, facilities, utilities, improvements, grading and filling shall be inspected on a schedule approved by the Town Engineer;
(6) A final inspection upon completion of all improvements; and
(7) Each stage of construction shall require a written direction from the Town Engineer to proceed.
(D) Fees. Subdividers shall pay fees as established by the Town Council, and other applicable fees as required by the town codes for plan checking, inspection, town consultant and other costs associated with the approval, construction and inspection of streets and other improvements subject to engineering standards.
(Prior Code, § 16.07.040) (Ord. 670, passed - -1998)