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Vantage to Pomona Heights Chapter 3 230 kV Transmission Line Project FEIS Affected Environment PAGE 3-295 Soil details for each route segment, including water erosion potential, wind erosion potential and soil restoration potential are shown in Table 3.15-1. Descriptions of each soil series represented in soil types within the route segments are shown in Table 3.15-2. 3.15.3 Current Management Considerations Pertinent laws, ordinances, regulations, and standards governing soil resources and geological hazards are summarized and discussed below. 3.15.3.1 Soil and Water Resources Conservation Act of 1977 Legislation provides for the collection and analysis of soil and related resource data and the appraisal of the status, condition, and trends for these resources. The Soil and Water Conservation Act (16 United States Code §2001 et seq.) provides for the U.S. Department of Agriculture (USDA) to possess information, technical expertise, and a system for providing assistance to land users with respect to conservation and use of soils, plants, woodlands, watershed protection, and related resource uses. The full suite of regulations promulgated by the USDA under this Act is available at 7 Code of Federal Regulations Parts 600-699. 3.15.3.2 Washington State Environmental Policy Act The Washington State Environmental Policy Act (SEPA), Chapter 43.21c Revised Code of Washington (RCW), provides the framework for agencies to consider the environmental consequences of a proposal before taking action. It also gives agencies the ability to condition a proposal due to identified likely significant adverse impacts. The Act is implemented through the SEPA Rules, Chapter 197-11 Washington Administrative Code (WAC). Environmental review is required for any proposal which involves a government "action," as defined in the SEPA Rules (WAC 197-11-704) and is not categorically exempt (WAC 197-11-800 through 890). Project actions involve an agency decision on a specific project, such as a construction project or timber harvest. Non-project actions involve decisions on policies, plans, or programs, such as the adoption of a comprehensive plan or development regulations. The SEPA review and checklist require an evaluation of unstable soils, evidence of past landslides, erosion potential, and other geologic hazards. 3.15.3.3 The Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers (IEEE) 693 Recommended Practices for Seismic Design of Substations was developed by the Substations Committee of the IEEE Power Engineering Society and approved by the American National Standards Institute and the IEEE-Standards Association Standards Board. This document provides seismic design recommendations for substations and equipment consisting of seismic criteria, qualification methods and levels, structural capacities, performance requirements for equipment operation, installation methods, and documentation. This recommended practice emphasizes the qualification of electrical equipment. IEEE 693 is intended to establish standard methods of providing and validating the capability of electrical substation equipment to withstand a seismic event. It provides detailed test and analysis methods for each type of major equipment or component found in electrical substations. This recommended practice is intended to assist the substation user or operator in providing substation equipment that will have a high probability of withstanding seismic events to predefined ground acceleration levels. It establishes standard methods of verifying seismic withstand capability, which gives the substation designer the ability to select equipment from various manufacturers, knowing that the seismic withstand rating of each manufacturer's equipment is an equivalent measure. Although most damaging seismic activity occurs in