Agenda - 05-24-1993 - C 6d - Laserfiche WebLink

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1c : residential development, the amount of land occupied by such uses may not exceed five percent of the watershed area beyond a Critical Area. In either of the cases cited above, the local government is required to assume ultimate responsibility for operation and maintenance of the stormwater controls, including a requirement to inspect such controls at least once per year to determine whether the controls are performing as designed and intended. Approval of such controls must be conditioned on the posting of adequate financial assurance by the applicant in the form of a cash deposit or security performance bond made payable to the local government. Local governments may also form a stormwater utility as a means of funding the operation and maintenance of stormwater controls which have been dedicated to them. Because of the financial and staffing implications of such requirements, amendments concerning the use of stormwater controls are to be considered at the August public hearing on the State-mandated watershed protection standards. However, a proposal to permit the use of conservation easements has been prepared, since the County has obtained special legislation to acquire a lesser interest to real property by easement for the purpose of preserving open space, including the conservation of watershed areas [copy attached] . EXISTING/PROPOSEED ORDINANCE/PLAN PROVISIONS New wording is highlighted in boldface. Changes recommended by the County Attorney are highlighted in italics. See May 14 , 1993 letter for rationale. *6. 23 .4 Impervious Surface Regulated in Protected Watersheds *Amended An impervious surface is a surface composed of any 11-20-84 material which impedes or prevents the natural 11-19-85 infiltration of water into the soil. Such surfaces 1-7-86 shall include any concrete or asphalt surface. These would include, but not be limited to, streets and parking areas, sidewalks, patios and structures which cover the land. As a watershed becomes developed the amount of impervious surface increases causing a decrease in soil absorption of stormwater runoff and an increase in direct runoff to streams and other water bodies resulting in an increase in potential water pollution. In order to promote infiltration of stormwater runoff into the soil and to minimize direct and immediate runoff into streams and water supply impoundments, impervious surface ratios shall be required as provided in the Table of Impervious Surface Ratios Section 6.23 . 4 . Modifications of the Impervious Surface Ratios may be requested, however, through one of the following provisions: a. As a Class A Special Use in accordance with the provisions of Section 8 of this Ordinance. In no case