3 - The Bowery_PUBLIC COMMENT_RAMSEY

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Avion Project SEIR Page S-39 Table S-1 Summary of Significant Environmental Impacts and Mitigation Measures Environmental Issue Impacts Mitigation Impact Level After Mitigation Landform Alteration/ Visual Quality Would the project result in a substantial change in the existing landform? Landform Alteration Impact VIS-1: The project would result in a substantial change in an existing landform. Therefore, impacts would be significant. This impact is consistent with the conclusion in the 1998 EIR. The project has been designed to minimize the visual impacts of landform alteration to the extent feasible. As a result, the project would preserve approximately 23.75 acres of the project site (57.3 percent) within the proposed MHPA open space, which consists of natural vegetation, and would also preserve the majority of steep slopes on-site. The project would also revegetate manufactured slopes in order to minimize the visual impact of grading. However, no further mitigation is available to reduce impacts associated with landform alteration. Significant and Unavoidable Air Quality Sensitive Receptors (Construction) Impact AIR-1: Dust generated from blasting operations required during project construction would have the potential to release naturally occurring subsurface arsenic, which could result in short-term exposure that may result in a significant impact. MM-AIR-1a: Arsenic Testing Protocol in Areas Requiring Blasting Geocon shall obtain periodic random samples from select air-track borehole spoils or the ground surface over the course of the blasting program. The number of samples shall vary and be based on judgement depending on the size of the shot. The samples shall be assigned for analysis of arsenic using U.S. Environmental Protection Agency Test Method 6010B with a reporting limit of 1.0 milligram per kilogram. The sampling shall be performed under the direct supervision of Geocon’s Project Manager and Professional Geologist. Less Than Significant