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9.0 EIR Subject Areas Requiring No Change in Analysis <br />Avion Project SEIR <br />Page 9-4 <br />construction and will include BMPs such as desilting basins, silt fences, gravel bags, fiber rolls, and <br />other erosion control measures. These temporary BMPs would be employed consistent with the <br />State Water Resources Control Board’s General Permit for Storm Water Discharges Associated with <br />Construction Activity. All of the water quality treatment measures described above would meet or <br />exceed those previously identified, and there would be no new significant or substantially increased <br />adverse impacts associated with water quality. <br />9.4 Visual Quality <br />Because no site-specific design was proposed for the Southeast Perimeter properties at the time the <br />1998 EIR was prepared, the EIR concluded that potential landform alteration impacts would be <br />evaluated during subsequent environmental review. Therefore, the analysis of project impacts <br />relative to landform alteration is discussed in Section 5.4.2 of this SEIR. <br />The 1998 EIR concluded that impacts to views from Black Mountain Park of future residential <br />development within the southeast perimeter properties may be significant. The MMRP indicates that <br />the application of Design Guidelines identified in the Subarea Plan that address residential lot <br />grading, siting of structures, architectural styles, setbacks, exterior use areas, walls and fences, <br />exterior lighting and landscaping, would allow for a consistent community character to be retained <br />and minimize impacts to views. The Subarea Plan states: <br />All Perimeter Properties and the BMR North Clusters will be required to adopt the <br />Design Guidelines approved for the BMR VTM/PRD or required to develop <br />independent design guidelines conforming to the Framework Plan, this Subarea I <br />plan and compatible with the BMR VTM/PRD Design Guidelines. <br />Design Guidelines have been developed for the project and are consistent with the Subarea Plan <br />Design Guidelines. Therefore, conclusions from the 1998 EIR are applicable and the project would <br />not result in any new significant or substantially increased adverse impacts beyond those previously <br />identified in the EIR relative to visual character. <br />The 1998 EIR did not identify any significant impacts to unique geologic or topographic features <br />from future development within the Subarea. The EIR analysis stated that the southeast perimeter <br />properties would encroach into approximately 9 percent of sensitive on-site slopes. The project <br />would encroach into approximately 18.95 percent of steep slopes subject to Environmentally <br />Sensitive Lands (ESL; with allowances for erosion control). The encroachment is within the allowable <br />limits of the City’s ESL ordinance, as detailed in Section 5.1.3 of this SEIR. Therefore, new or <br />substantially increased adverse impacts would result, and the conclusions are consistent with those <br />of the 1998 EIR. <br />The 1998 EIR did not identify the presence of any distinctive or landmark trees within the subarea. <br />No landmark trees are present on the project site, and no further analysis is required.