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3 <br /> with the four percent ratio was feasible (60 percent <br /> compliance) but would require significant education and <br /> design initiatives. The proposed six percent ratio was <br /> of greater concern, since it only 30 percent of the lot <br /> scenarios indicated compliance with the standard. <br /> The Planning Board delayed action on the proposed <br /> standards and asked for specific solutions to the <br /> impervious surface ratio dilemma. In particular, the <br /> Planning Board requested options concerning technical <br /> solutions using dry wells, etc. , raising the impervious <br /> surface limits, and design standards which would insure <br /> compliance. <br /> At the Planning Board meeting of January 16, 1990, the <br /> Planning Director presented various options for the <br /> Board's consideration. The options provided relief from <br /> the inability to comply with recommended impervious <br /> surface ratios and included the following: <br /> 1 . Accept the CDM recommended standards; <br /> 2 . Increase the impervious surface ceiling; <br /> 3 . Discount unpaved road surfaces; <br /> 4 . Discount all unpaved surfaces, such as roads, <br /> driveways, and sidewalks; <br /> 5. Establish design standards which assure compliance <br /> such as a maximum permitted driveway length; <br /> 6 . Increase the minimum required lot size requirement; <br /> and <br /> 7 . Require compliance with a four percent impervious <br /> surface ratio and a density standard of one unit per <br /> five acres but permit a minimum lot size of two <br /> acres. <br /> Following consideration of the various options, the <br /> Planning Board voted to recommend approval of the <br /> proposed revisions to the revised interim development <br /> standards with the following change to Article 6 . 15.2 <br /> a. 3.a) of the Zoning Ordinance: <br /> a) Basic Requirements: In the University Lake water <br /> supply watershed, lot size averaging is permitted <br /> provided the overall residential density for any <br /> development application shall not exceed one <br /> dwelling unit per five acres, no lot shall be less <br /> than two acres in size, and no more than five two- <br /> acre lots may be created as part of any development <br /> application, except as permitted under subsection. <br /> hi or c) below. <br /> An identical change was recommended for Section IV-C-2 <br /> a.3 .a) of the Subdivision Regulations . <br /> While still recognizing the difficulty of complying <br />