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Vantage to Pomona Heights Chapter 4 230 kV Transmission Line Project FEIS Environmental Consequences PAGE 4-145 4.4.5 Mitigation Measures The following mitigation measures have been identified to reduce, avoid, minimize, or rectify adverse impacts to land use resources, specifically to agricultural resources. These mitigation measures would be implemented where warranted and are anticipated to be effective. They are summarized in Table 4.4-3 below. Table 4.4-3 Vantage-Pomona Heights Transmission Project Mitigation Measures MITIGATION MEASURE DESCRIPTION LU-1: Modify Structure/ROW Location Within the standard limits of structure design, single pole and H-frame structures will be located so as to allow adequate clearance for agricultural operations and irrigation canal maintenance or to span or avoid sensitive land use features. Avoidance measures may include structure micro-siting, placing access roads and structures at the edge of fields, spanning features, taller structures, or the realigning of access roads and ROW centerline. LU-2: Modify Structure Type To the extent practical, within standard structure design, and where not identified as a required design feature, single-pole structures will be utilized to minimize ground disturbance and operational conflicts and address site-specific constraints LU-3: Stockpile Soils in Prime Farmland Any topsoil removed from areas designated as prime farmland or Farmland of Statewide Importance will be scraped and stockpiled rather than covered over or removed. The topsoil will then be used for erosion control and in areas of planting for best management practices. To minimize the effects of Project construction and operation conflicts with sensitive land uses, mitigation measure LU-1: Modify Structure/ROW Location will be implemented in specific locations as necessary. Mitigation measure LU-1 will be effective at reducing impacts by reducing the potential operational and maintenance interference and other conflicts. This mitigation measure will be implemented in the following locations: • Route Segment 1c: MP 5.9-6.0, 9.5-10.5, and 11.3-11.4 • Route Segment 2c: MP 9.5-11.2 and 13.1-14.7 • Route Segment 3b: MP 14.7-15.1 and 17.3-19.0 • Route Segment 3c: MP 5.3-14.3 To minimize the effects of structure impedance on irrigation facilities and cropland, Mitigation Measure LU-2: Modify Structure Type will be implemented in specific locations as necessary. Mitigation Measure LU-2 will be effective at reducing impacts by reducing the structure footprint area and increasing compatibility with agricultural operations. This mitigation measure will be implemented in the following locations: • Route Segment 2c: MP 13.1-14.7 To minimize the effects farmland conversion and impacts on Prime Farmland, mitigation measure LU-3: Stockpile Soils in Prime Farmland will be implemented in specific locations as necessary. Mitigation Measure LU-3 will be effective at reducing impacts by preserving soil resources and minimizing the effects of reduced Prime Farmland area. This mitigation measure would reduce impacts from moderate to low in non-agricultural land. This mitigation measure will be implemented in the following locations: • Route Segment 1a/NNR-1: MP 0.0-0.2 and 0.7-2.4 • Route Segment 1b: MP 0.0-0.2, 5.4-5.8, 6.4-6.8, 9.3-9.5, 10.0-10.2, and 10.6-11.2 • Route Segment 1c: MP 0.0-0.1 and 10.5-10.7