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expand the critical area, where warranted. <br />2. IMPERVIOUS SURFACE LIMITATIONS <br />The use of a sliding scale for impervious surfaces is a part <br />of the comprehensive water quality protection package for <br />University Lake watershed. It is not clear from the state <br />rules that such a sliding scale, based on lot size, would be <br />ermitted. <br />3. STORMWATER MANAGEMENT CONTROLS AND RESPONSIBILITIES <br />: -sra :;< ? :::::: >:va olt? .... , allowing stormwater <br />controls "'to b'e used only as added protection. The low - density <br />method is the "preferred" approach by the Environmental <br />Management Commission, and the County commends the <br />retention of this statement in the rules. Orange County <br />further commends the requirement of local government <br />responsibility for stormwater control facilities (if they are <br />to be utilized) to ensure adequate monitoring and maintenance. <br />4. NON - RESIDENTIAL DEVELOPMENT <br />any new interpretations of the rules to allow non- <br />residential development on an unrestricted basis in such <br />watersheds. The WS -4 category, which provides few limitations <br />on non - residential development, would seem more appropriate <br />for this sort of interpretation. <br />5. DENSITY OF DEVELOPMENT <br />6. <br />The rules state that local governments, in meeting the <br />watershed density standards, can regulate either by using <br />minimum lot sizes OR by limiting impervious surfaces. <br />Many local governments in this area, including Orange County, <br />link these two concepts and utilize both approaches was one. <br />............... ....... <br />DEFINITION OF EXISTING DEVELOPMENT <br />