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Sec. 9.1-9. Interpretation of Resource Protection Area boundaries. (a) Delineation by the applicant. The site-specific boundaries of the RPA shall be determined by the applicant as part of the plan of development review process or during review of a water quality impact assessment, subject to approval by the director of planning. A site- specific evaluation shall be conducted to determine whether water bodies on or adjacent to the development site have perennial flow. The Chesapeake Bay Preservation Area Map shall be used as a guide to the general location of RPAs. (b) Where conflict arises over delineation. Where the applicant has provided a site-specific delineation of the RPA, the director of planning will verify the accuracy of the boundary delineation. In determining the site-specific RPA boundary, the director of planning may render adjustments to the applicant's boundary delineation. In the event the adjusted boundary delineation is contested by the applicant, the applicant may seek relief in accordance with the provisions of subsection 9.1-11(i). (c) Final delineation shown on CBPA map. When a delineation of a CBPA has been approved or established by the director of planning, the CBPA Map shall be amended to reflect that delineation. Sec. 9.1-10. Performance standards. (a) Purpose and intent. The performance standards establish the means to minimize erosion and sedimentation potential, reduce land application of nutrients and toxics, and maximize rainwater infiltration. Natural groundcover, especially woody vegetation, is most effective in holding soil in place and preventing site erosion. Indigenous vegetation, with its adaptability to local conditions without the use of harmful fertilizers or pesticides, filters stormwater runoff. Minimizing impervious cover enhances rainwater infiltration and effectively reduces stormwater runoff potential. The purpose and intent of these requirements are also to implement the following objectives: prevent a net increase in nonpoint source pollution from new development; achieve a ten percent reduction in nonpoint source pollution from development on previously developed land where the runoff was not treated by one or more water quality best management practices; and achieve a 40 percent reduction in nonpoint source pollution from agricultural uses. (b) General performance standards for development and redevelopment. (1) Land development, redevelopment, or disturbance shall be limited to the minimum area necessary to provide for the proposed use or development. a. The submitted site plan shall indicate the limits of the proposed land disturbance, including areas for clearing or grading and shall be limited to the minimum area necessary to provide for the construction footprint. These limits shall be clearly shown on submitted plan and physically marked on the development site. b. Ingress and egress during construction shall be limited to one access point.