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Vantage to Pomona Heights Chapter 2 <br />230 kV Transmission Line Project FEIS Proposed Action and Alternatives <br /> PAGE 2-44 <br />They range in size from approximately one to two acres. Transition stations also require grading, access <br />roads and stormwater management facilities. Figure 2-11 is a photograph of a small transition station. <br />Two transition stations would be required for each segment of undergrounding. <br />FIGURE 2-11 TRANSITION STATION AND STRUCTURES (WPSC PHOTO) <br /> <br />Site Reclamation and ROW Permitted Uses <br />Site reclamation is similar to the description for overhead transmission with the exception that access <br />must be maintained along the entire length of the ROW for inspection and repair. Following construction, <br />the ROW must be kept clear of vegetation with long roots; but shrubs may be established. Herbaceous <br />vegetation would be allowed to return to the ROW. For the proposed Project, this would mean native <br />herbaceous perennial grasses would be established to provide ground cover and soil stabilization. <br />2.2.5.3 Underground Transmission Line Temporary and Permanent Disturbance <br />Table 2-5 summarizes Underground Design Option disturbance assumptions based on the typical design <br />and construction features described in the previous sections. These were applied to the Underground <br />Design Option for route segments (NNR-4u and NNR-6u) to determine potential ground disturbance (see <br />Section 2.6.1). Identical access road assumptions (Access Levels) were used for the Overhead Design <br />Option and the Underground Design Option.