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Vantage to Pomona Heights Chapter 4
<br />230 kV Transmission Line Project FEIS Environmental Consequences
<br /> PAGE 4-51
<br />Table 4.2-6 Long-Term Disturbance to Vegetation and Impact Summary of action Alternatives ACTION ALTERNATIVES VEGETATION TYPE1,2 IMPACTS3 ANNUAL GRASSLAND AND NOXIOUS WEEDS BITTERBRUSH PERENNIAL GRASSLAND FORBS INTERMITTENT STREAM / DRY GULLY PERENNIAL GRASSLAND RABBITBRUSH ANNUAL GRASSLAND RIPARIAN / WETLAND ROCK / BASALT CLIFF SAGEBRUSH ANNUAL GRASSLAND SAGEBRUSH PERENNIAL GRASSLAND TREES TOTAL VEGETATION DISTURBED HIGH MODERATE LOW NO IDENTIFIABLE mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac % mi ac mi mi mi mi
<br />Alternative A
<br />1a/NNR-1, 1b, 2a, 2b, 2d, 3a, 3c
<br />64.7 miles
<br />9.9 14.6 15.6 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.7 0.7 4.3 6.0 6.5 3.5 3.0 3.2 0.3 0.3 0.3 0.3 0.6 0.6 0.6 2.8 1.1 33.8 182.2 74.7 0.1 0.1 0.1 53.1 210.1 0.0 34.2 18.9 11.9
<br />Alternative B
<br />1a/NNR-1, 1b, 2a, 2b, 2d, 3a, 3b
<br />61.2 miles
<br />7.4 11.1 11.4 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.7 0.7 5.0 6.7 6.9 1.9 0.9 0.9 0.2 0.4 0.4 0.1 0.2 0.2 0.1 0.4 0.2 29.4 157.9 70.1 1.8 1.3 1.3 46.2 179.6 0.0 31.4 14.8 15.3
<br />Alternative C
<br />1a/NNR-1, 1b, 2a, 2c, 2d, 3a, 3b
<br />63.0 miles
<br />10.1 14.8 17.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.4 5.2 6.2 1.9 0.9 1.0 0.2 0.4 0.4 0.1 0.2 0.2 0.1 0.4 0.2 22.9 116.9 50.4 1.8 1.3 1.5 41.5 140.1 0.0 24.9 16.6 21.8
<br />Alternative D
<br />1a/NNR-1, 1b, 2a, 2c, 2d, 3a, 3c
<br />66.5 miles
<br />12.6 18.3 22.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.7 4.5 5.6 3.5 3.0 3.7 0.3 0.3 0.3 0.3 0.6 0.7 0.6 2.8 1.1 27.3 141.2 56.4 0.1 0.1 0.1 48.4 170.6 0.0 27.7 20.7 18.4
<br />Alternative E
<br />1a/NNR-1, 1c, 2a, 2b, 2d, 3a, 3b
<br />61.6 miles
<br />12.9 23.0 21.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.8 0.7 3.2 5.6 5.1 1.7 0.9 0.8 0.2 0.4 0.3 0.1 0.2 0.2 0.1 0.4 0.2 26.2 146.7 64.8 1.7 1.2 1.1 46.5 179.2 0.0 28.1 18.4 15.4
<br />Alternative F
<br />1a/NNR-1, 1c, 2a, 2b, 2d, 3a, 3c
<br />65.1 miles
<br />15.4 26.5 25.2 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.8 0.7 2.5 4.9 4.7 3.3 3.0 2.9 0.3 0.3 0.2 0.3 0.6 0.6 0.6 2.8 1.1 30.6 170.9 69.8 0.0 0.0 0.0 53.4 209.7 0.0 30.9 22.5 12.0
<br />Alternative G
<br />1a/NNR-1, 1c, 2a, 2c, 2d, 3a, 3b
<br />63.4 miles
<br />15.6 26.7 27.7 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 2.6 4.1 4.3 1.7 0.9 1.0 0.2 0.4 0.4 0.1 0.2 0.2 0.1 0.4 0.2 19.7 105.7 45.4 1.7 1.2 1.2 41.8 139.7 0.0 21.6 20.2 21.9
<br />Alternative H
<br />1a/NNR-1, 1c, 2a, 2c, 2d, 3a, 3c
<br />66.8 miles
<br />18.1 30.2 32.8 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 1.9 3.4 3.7 3.3 3.0 3.3 0.3 0.3 0.3 0.3 0.6 0.6 0.6 2.8 1.1 24.1 129.9 51.7 0.0 0.0 0.0 48.7 170.2 0.0 24.4 24.3 18.5
<br />NNR Alternative – Overhead Design Option*
<br />1a/NNR-1, NNR-2, NNR-3, NNR-4o,
<br />NNR-5, NNR-6o, NNR-7, NNR-8 40.5 miles
<br />2.5 2.2 4.6 0.2 0.3 0.6 0.7 0.6 1.3 0.1 0.2 0.5 2.4 3.6 7.8 1.2 1.1 2.4 0.0 0.0 0.0 0.3 0.4 0.9 2.7 14.1 9.0 28.0 140.7 89.6 0.3 0.2 0.4 38.4 163.5 0.0 28.6 9.8 2.5
<br />NNR Alternative – Underground Design Option
<br />1a/NNR-1, NNR-2, NNR-3, NNR-4u,
<br />NNR-5, NNR-6u, NNR-7, NNR-8 40.5 miles
<br />2.5 2.2 3.7 0.2 0.3 0.5 0.7 0.6 1.0 0.1 0.2 0.4 2.4 3.6 6.2 1.2 1.1 1.9 0.0 0.0 0.0 0.3 0.4 0.7 2.7 23.9 12.2 28.0 176.3 89.8 0.3 0.2 0.3 38.4 208.7 0.0 28.6 9.8 2.5
<br />NNR Alternative – MR Subroute
<br />1a/NNR-1, NNR-2, NNR-3, MR-1,
<br />NNR-5, NNR-6o, NNR-7, NNR-8
<br /> 47.8 miles
<br />7.1 14.7 19.5 0.0 0.0 0.0 0.7 0.6 0.8 0.1 0.2 0.3 2.3 3.6 4.7 1.2 1.1 1.5 0.0 0.0 0.0 0.3 0.4 0.6 1.0 4.8 2.6 30.1 159.2 86.2 0.3 0.2 0.3 43.1 184.9 0.0 30.5 12.6 5.1
<br />1 Miles crossed (mi) = inventory measurement; Acres (ac) = amount of long-term disturbance; % = percent of vegetation type disturbed compared to the total amount of long-term disturbance for each Action Alternative (including agriculture, cliff/rock, disturbed or developed, and water which are not shown).
<br />2 Total miles of vegetation disturbance does not include disturbance to agriculture, cliff/rock, disturbed or developed and water.
<br />3 Impact levels in linear miles. Areas with no identifiable impacts include areas where no roads would be necessary; steep areas that would be spanned; disturbance to agriculture; and disturbed or developed areas and water. RDFs described in Chapter 2 are designed to reduce effects from the proposed Project; therefore, no
<br />additional mitigation would be required.
<br />* Agency Preferred Alternative
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