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2/19/1999 DRAFT COPY OF PROPOSED NSA ORDINANCE <br />1 (4) Topographic lines based on maps published by the U.S. Geological Survey; and <br />2 <br />3 (5) The location of all primary and secondary conservation areas as defined in <br />4 subsections 15-198(b)(4) and (5). <br />5 <br />6 (c) After the site analysis plan has been submitted, the planning staff shall schedule a mutually <br />7 convenient date to walk the property with the applicant and the applicant's site designer. Designated <br />8 members of the Planning Board, Northern Transition Advisory Committee, Transportation Advisory Board, <br />9 and Appearance Commission, shall be notified of the date and time of this "on-site walkabout." The purpose <br />10 of this visit is to familiarize town officials with the property's special features and to provide an informal <br />11 opportunity for an interchange of information as to the developer's plans and the town's requirements. <br />12 <br />13 (d) Prior to the submission of a conceptual preliminary plan as described in subsection (e), the <br />14 staff shall meet with the developer to discuss how the four-step approach to designing subdivisions described <br />15 below could be applied to the subject property. This conference may be combined with the on-site <br />16 walkabout. <br />17 <br />18 (e) Following completion of the. steps described in subsections (b), (c), and (d), the developer <br />19 shall submit a conceptual preliminary plan of the proposed subdivision, prepared in accordance with the <br />20 four-step process described in subsection (f). This plan shall be a preliminarily engineered sketch plan <br />21 drawn to illustrate initial thoughts about a conceptual layout for open space, house sites, and street <br />22 alignments. This is the stage where drawings are tentatively illustrated, before heavy engineering costs are <br />23 incurred in the design of any proposed subdivision layout. The planning staff shall review this plan and <br />24 provide comment to the developer on the overall pattern of streets, houselots, open space, and the treatment <br />25 of primary and secondary conservation areas in light of the applicable requirements of this chapter. <br />26 <br />27 (f) Each conceptual preliminary plan shall be prepared using the following four-step design <br />28 process: <br />29 <br />30 (1) During the first step, all primary and secondary conservation areas are identified (and <br />31 shown on the site analysis plan described in subsection (b)). <br />32 <br />33 (2) During the second step, potential sites are tentatively located. House sites should <br />34 generally be located not closer than 100 feet from primary conservation areas and 50 <br />3 5 feet from secondary conservation areas. <br />36 <br />37 (3) The third step consists of aligning proposed streets to provide vehicular access to each <br />38 house in the most reasonable and economical way. When lots and access streets are <br />39 laid out, they shall be located in a way that avoids or at least minimizes adverse <br />40 impacts on primary and secondary conservation areas. To the greatest extent <br />41 practicable, wetland crossings and streets traversing existing slopes over 15% shall be <br />42 strongly discouraged. Street connections shall comply with the provisions of Section <br />43 15-214. <br />44 <br />45 (4) The fourth step is to draw in the lot lines. <br />46 <br />. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br />~I'age 2S of 3S <br />