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Vantage to Pomona Heights Chapter 3 <br />230 kV Transmission Line Project FEIS Affected Environment <br /> PAGE 3-316 <br />MAP UNIT NAME/SLOPE WIND EROSION POTENTIAL <br />WATER EROSION POTENTIAL <br />SOIL RESTORATION POTENTIAL <br />ACRES WITHIN 500-FOOT CORRIDOR (WITHIN 250 OF CENTERLINE) <br />Rollinger ashy silt loam, 45 to <br />60 percent slopes Moderate Moderate High potential 0.3 <br />Rollinger ashy silt loam, 5 to <br />10 percent slopes Moderate Moderate High potential 1.2 <br />Rollinger silt loam, 10 to 15 <br />percent slopes Moderate Moderate High potential 190.6 <br />Rollinger silt loam, 15 to 30 <br />percent slopes Moderate Moderate High potential 9.4 <br />Rollinger silt loam, 30 to 45 <br />percent slopes Moderate Moderate High potential 21.2 <br />Rollinger silt loam, 45 to 60 <br />percent slopes Moderate Moderate High potential 23.0 <br />Rollinger silt loam, 5 to 10 <br />percent slopes Moderate Moderate High potential 25.7 <br />Selah loam, 5 to 10 percent <br />slopes Moderate Moderate Moderate potential 0.0 <br />Selah silt loam, 5 to 10 <br />percent slopes Moderate Moderate Moderate potential 14.7 <br />Vantage very cobbly loam, 3 <br />to 15 percent slopes Low Moderate Moderate potential 30.3 <br />Vantage-Clerf complex, 15 to <br />30 percent slopes Low Moderate Moderate potential 31.3 <br />Vantage-Clerf complex, 30 to <br />70 percent slopes Low Moderate Moderate potential 3.8 <br />Wipple cobbly clay loam, 15 <br />to 30 percent slopes Low Low Moderate potential 34.3 <br />Wipple cobbly clay loam, 30 <br />to 45 percent slopes Low Low Low potential 5.4 <br />Wipple cobbly clay loam, 30 <br />to 45 percent slopes Low Low Moderate potential 26.2 <br />Wockum-Blint-Windry <br />complex, 45 to 60 percent <br />slopes <br />Moderate Moderate High potential 3.0 <br />Zen-Marlic-Laric complex, 3 <br />to 15 percent slopes Moderate Moderate Moderate potential 28.1 <br /> <br />Table 3.15-2 Soil Series Descriptions <br />SERIES DESCRIPTION <br />Adkins Found on uplands at elevations of 250 to 2,300 feet. The parent material consists of eolian deposits. Depth to a <br />root restrictive layer is > 78 inches. The natural drainage class is well drained. <br />Aquolls Found on channels on flood plains. The parent materials consist of alluvium. Depth to a root restrictive layer is <br />20 to >60 inches. The natural drainage class is poorly drained or somewhat poorly drained. <br />Argabak <br />Found on structural benches, hillslopes. The parent material consists of loess and residuum weathered from <br />basalt. Depth to a root restrictive layer, bedrock, lithic, is 5 to 12 inches. The natural drainage class is well <br />drained. <br />Argids Found on terraces. The parent material consists of alluvium. Depth to a root restrictive layer is >78 inches. The <br />natural drainage class is well drained. <br />Argixerolls Found on south-facing alluvial fan escarpments. The parent materials consist of loess and alluvium. Depth to a <br />root restrictive layer is greater than 60 inches. The natural drainage class is well drained.