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Vantage to Pomona Heights Chapter 3
<br />230 kV Transmission Line Project FEIS Affected Environment
<br /> PAGE 3-319
<br />SERIES DESCRIPTION
<br />Patron
<br />Found on hillslopes. The parent material consists of residuum and colluviums from basalt and loess with
<br />volcanic ash in the surface. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class
<br />is well drained.
<br />Prosser
<br />Found on hillslopes, benches, and plateaus. The parent material consists of loess and glaciofluvial sediments
<br />with minor components of volcanic ash. Depth to a root restrictive layer, lithic bedrock, is 28 inches. The natural
<br />drainage class is well drained.
<br />Quincy Found on uplands, fan piedmonts, and terraces. The parent material consists of sands on dunes and terraces.
<br />Depth to a root restrictive layer is 78 inches. The natural drainage class is excessively drained.
<br />Quinton Found on hillslopes, benches, and terraces. The parent material consists of mixed eolian sands. Depth to a root
<br />restrictive layer, lithic bedrock, is 22 inches. The natural drainage class is excessively drained.
<br />Ralock
<br />Found on north-facing hillslopes and alluvial fans. The parent material consists of loess influenced by volcanic
<br />ash and colluviums from basalt, and alluvium. Depth to a root restrictive layer is greater than 60 inches. The
<br />natural drainage class is well drained.
<br />Renslow Found on long, broad ridges, plateaus, hills and stream terraces. The parent material consists of loess. Depth to
<br />a root restrictive layer, lithic bedrock, is 44 inches. The natural drainage class is well drained.
<br />Ritzville Found on hills, hillslopes. The parent material consists of loess. Depth to a root restrictive layer is greater than
<br />60 inches. The natural drainage class is well drained.
<br />Rock creek Found on ridges, plateaus. The parent material consists of residuum from basalt with loess. Depth to a root
<br />restrictive layer, bedrock, lithic, is 8 to 20 inches. The natural drainage class is well drained.
<br />Rollinger
<br />Found on north-facing hillslopes and piedmont slopes. The parent materials consist of loess mixed with volcanic
<br />ash at the surface and slope alluvium. Depth to a root restrictive layer is greater than 60 inches. The natural
<br />drainage class is well drained.
<br />Royal Found on footslopes and terraces. The parent material consists of sandy alluvium and wind modified
<br />glaciofluvial sediments. Depth to a root restrictive layer is >78 inches. The natural drainage class is well drained.
<br />Roza Found on alluvial fans. The parent material consists of fine textured interbedded sediments. Depth to a root
<br />restrictive layer is greater than 60 inches. The natural drainage class is well drained.
<br />Rubble Found on rock outcrops. Depth to a root restrictive layer is >78 inches. The natural drainage class is somewhat
<br />excessively drained.
<br />Schawana
<br />Found on structural benches, hillslopes. The parent material consists of eolian deposits over residuum
<br />weathered from basalt. Depth to a root restrictive layer, bedrock, lithic, is 8 to 20 inches. The natural drainage
<br />class is somewhat excessively drained.
<br />Scoon Found on terraces, alluvial fans. The parent material consists of loess. Depth to a root restrictive layer, duripan,
<br />is 10 to 20 inches. The natural drainage class is well drained.
<br />Scooteney Found on nearly level to steep alluvial fans and terraces. The parent material consists of alluvium. Depth to a
<br />root restrictive layer is >78 inches. The natural drainage class is well drained.
<br />Selah Found on terraces. The parent material consists of loess and old alluvium. Depth to a root restrictive layer,
<br />duripan, is 20 to 40 inches. The natural drainage class is well drained.
<br />Semal Found on terraces. The parent material consists of glacial outwash mixed with loess. Depth to a root restrictive
<br />layer, duripan, is 20 to 40 inches. The natural drainage class is well drained.
<br />Sohappy Found on structural benches, footslopes and toeslopes. The parent material consists of loess over colluvium.
<br />Depth to a root restrictive layer, lithic bedrock, is 47 inches. The natural drainage class is well drained.
<br />Starbuck Found on structural benches. The parent material consists of loess and alluvium. Depth to a root restrictive
<br />layer, bedrock, lithic, is 12 to 20 inches. The natural drainage class is well drained.
<br />Tanksel
<br />Found on hillslopes. The parent material consists of colluvium from basalt, with an influence of loess and
<br />volcanic ash in the surface horizons. Depth to a root restrictive layer, bedrock, lithic, is 20 to 40 inches. The
<br />natural drainage class is well drained.
<br />Taunton Found on terraces and basalt plains, fan terraces, and mesas. The parent material consists of alluvium. Depth
<br />to a root restrictive layer, duripan, is 27 inches. The natural drainage class is well drained.
<br />Terlan
<br />Found on dissected flat summit, fan terraces, and fan remnants. The parent materials consist of alluvium mixed
<br />with loess over a gravelly duripan. Depth to a root restrictive layer, duripan, is 10 to 20 inches. The natural
<br />drainage class is well drained.
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