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Vantage to Pomona Heights Chapter 4 <br />230 kV Transmission Line Project FEIS Environmental Consequences <br /> PAGE 4-198 <br />Table 4.8-7 Moderately Sensitive View Impacts <br />DISTANCE ZONE <br />PROJECT CONTRAST <br />Strong Strong / Moderate Moderate Moderate / Weak Weak <br />Immediate Foreground <br />0 to 500 feet- Underground Design Option <br />0 to 1,000 feet- Pole/H-frame <br />0 to 0.75 mi-Crossing Lattice Steel Tower <br />H H M M L <br />Foreground <br />500 feet to 2,000 feet- Underground Design Option <br />1,000 feet to 0.33 mi- Pole/H-frame <br />0.75 mi to 1.5 mi-Crossing Lattice Steel Tower <br />H M M L L <br />Middleground <br />2,000 feet to 0.75 mi - Underground Design Option <br />0.33 mi to 1 mi- Pole/H-frame <br />1.5 mi to 3 mi -Crossing Lattice Steel Tower <br />M M L L L <br />Background <br />0.75 mi to 1.25 mi - Underground Design Option <br />1 to 2 mi- Pole/H-frame <br />3 mi to 4 mi-Crossing Lattice Steel Tower <br />M L L L L <br />Seldom Seen <br />Beyond 1.25 mi - Underground Design Option <br />Beyond 2 mi - Pole/H-frame <br />Beyond 4 mi -Crossing Lattice Steel Tower <br />L L L L L <br />H = High Impacts; H/M = High/Moderate Impacts; M = Moderate Impacts; M/L = Moderate/Low Impacts; L = Low Impacts; mi = miles. <br />4.8.4 Impacts Common to All Route Segments and Design Options <br />Short-term visual impacts related to the presence and operation of construction vehicles, equipment, <br />traffic, and fugitive dust affecting views would be common for all route segments. Contrasts related to the <br />staging and laydown areas would be short-term and common to all route segments and Design Options. <br />Staging areas would be located in previously disturbed areas; therefore, the primary visual impacts <br />associated with those sites would be related to the short-term presence of construction materials creating <br />structure contrasts and would be independent of route segments. <br />Maintenance activities, such as periodic patrolling of the line, would be conducted with helicopters semi- <br />annually and with all-terrain vehicles or 4x4 trucks. The locations of these inspections are dependent on <br />the route segment, but would be common to all route segments. Short-term structure contrasts created by <br />the presence of patrol vehicles, equipment used for necessary hardware maintenance and repairs (e.g., <br />boom and bucket trucks, flatbed trucks), ROW corridor maintenance and vegetation management, and <br />associated fugitive dust potentially impacting views would create low impacts common to all route <br />segments. Operational impacts (e.g., the presence of the transmission line structures, conductors, access <br />roads) would cause the greatest long-term impacts and would be dependent on the location of the route <br />segments and Design Option, as described below. Long-term Project visual impacts are summarized in <br />Tables 4.8-8A and 4.8-8B.