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Vantage to Pomona Heights Chapter 4
<br />230 kV Transmission Line Project FEIS Environmental Consequences
<br /> PAGE 4-52
<br />Table 4.2-7 Long-Term Disturbance to Special Status Plant Species and Habitat and Impact Summary of Action ALternatives
<br />ACTION ALTERNATIVES
<br />SPECIAL STATUS PLANTS AND ECOSYSTEMS (MILES) HABITAT SUITABILITY (MILES)1 IMPACTS (MILES)2
<br />WNHP Special Status Plant Polygons
<br />Crossed
<br />Special Status Plants Found
<br />During Survey
<br />WNHP Priority Ecosystems
<br />Crossed
<br />Suitable Marginal Unsuitable High Moderate Low No Identifiable
<br />Alternative A
<br />1a/NNR-1, 1b, 2a, 2b, 2d, 3a, 3c
<br />64.7 miles
<br />9.6 1.5 3.8 33.7 17.1 11.5 0.0 40.5 14.0 10.5
<br />Alternative B
<br />1a/NNR-1, 1b, 2a, 2b, 2d, 3a, 3b
<br />61.2 miles
<br />12.7 2.7 0.0 29.2 13.2 16.6 0.0 40.2 12.0 9.3
<br />Alternative C
<br />1a/NNR-1, 1b, 2a, 2c, 2d, 3a, 3b
<br />63.0 miles
<br />12.1 2.2 0.0 22.4 15.3 23.1 0.0 33.3 14.2 15.8
<br />Alternative D
<br />1a/NNR-1, 1b, 2a, 2c, 2d, 3a, 3c
<br />66.5 miles
<br />9.0 1.0 3.8 26.9 19.2 18 0.0 33.6 16.2 17.0
<br />Alternative E
<br />1a/NNR-1, 1c, 2a, 2b, 2d, 3a, 3b
<br />61.6 miles
<br />12.7 2.3 0.0 26.1 16.7 16.6 0.0 36.7 15.6 9.6
<br />Alternative F
<br />1a/NNR-1, 1c, 2a, 2b, 2d, 3a, 3c
<br />65.1 miles
<br />9.6 1.1 3.8 30.6 20.6 11.5 0.0 37.0 17.6 10.8
<br />Alternative G
<br />1a/NNR-1, 1c, 2a, 2c, 2d, 3a, 3b
<br />63.4 miles
<br />12.1 1.8 0.0 19.3 18.8 23.1 0.0 29.8 17.8 16.1
<br />Alternative H
<br />1a/NNR-1, 1c, 2a, 2c, 2d, 3a, 3c
<br />66.8 miles
<br />9.0 0.6 3.8 23.8 22.7 18 0.0 30.1 19.8 17.3
<br />NNR Alternative – Overhead Design Option*
<br />1a/NNR-1, NNR-2, NNR-3, NNR-4o, NNR-5,
<br />NNR-6o, NNR-7, NNR-8 40.5 miles
<br />8.4 2.7 0.0 29 8.7 2.9 0.0 30.6 7.9 2.4
<br />NNR Alternative - Underground Design
<br />Option
<br />1a/NNR-1, NNR-2, NNR-3, NNR-4u, NNR-5,
<br />NNR-6u, NNR-7, NNR-8 40.5 miles
<br />8.4 2.7 0.0 29 8.7 2.9 0.0 30.6 7.9 2.4
<br />NNR Alternative - MR Subroute
<br />1a/NNR-1, NNR-2, NNR-3, MR-1, NNR-5, NNR-
<br />6o, NNR-7, NNR-8
<br /> 47.8 miles
<br />8.4 2.6 0.4 30.9 11.5 5.5 0.0 32.6 10.7 4.9
<br />1 Unsuitable habitat included: agricultural land; developed, road, or firebreak; irrigation canal; open water; and watered poplar. Marginal habitat included: annual grassland, perennial grassland; rabbitbrush/annual grassland, and sagebrush annual grassland. Suitable
<br />habitat included: basalt cliff/rock, sagebrush/perennial grassland, aspen, intermittent stream or dry gully, and riparian.
<br />2 Impact levels in linear miles.
<br />* Agency Preferred Alternative
<br />Numbers may not sum precisely due to rounding.
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