Mid-Atlantic Power Pathway Chalk Point Substation to Indian River ...

Mid-Atlantic Power Pathway Environmental Review Document
Chalk Point Substation to Indian River Substation Volume II – Environmental Analysis of
April 13, 2011 Chalk Point Substation to MD/DE State Line
Table 1.2-1 (continued)
Soil Series Within the Project Right-of-Way and Project Boundaries
Soil Series Description
Manahawkin The Manahawkin series consists of very deep very poorly drained soils formed in
organic deposits, over sand and gravel. This component is on coastal plains and swamps.
Typically, they have a black surface and subsurface layer of highly decomposed organic
material, 39 inches thick. The substratum to a depth of 60 inches is gray sand.
Manahawkin soils are in low positions in back swamps, lake basins, and along fresh
water channels as they open to tide water. The parent material consists of organic,
woody material over sandy alluvium. Depth to a root restrictive layer is greater than 60
inches. The natural drainage class is very poorly drained. Water movement in the most
restrictive layer is moderately high. Available water to a depth of 60 inches is very high.
Shrink-swell potential is low. This soil is frequently flooded. It is frequently ponded. A
seasonal zone of water saturation is at 2 inches during January, February, March, April,
May, June, July, August, September, October, November, and December. Organic
matter content in the surface horizon is about 68 percent. Non-irrigated land capability
classification is 7w. This soil meets hydric criteria.
Marr The Marr series consists of deep well drained soils on uplands. They formed in Coastal
Plain sediments. Typically, these soils have a dark brown fine sandy loam surface layer,
6 inches thick. The subsoil from 6 to 12 inches is brown very fine sandy loam, from 12
to 22 inches is strong brown sandy clay loam, and from 22 to 34 inches is strong brown
heavy sandy clay loam. The substratum from 34 to 60 inches is brownish-yellow and
reddish-yellow fine sandy loam. The parent material consists of loamy fluviomarine
deposits. Depth to a root restrictive layer is greater than 60 inches. The natural drainage
class is well drained. Water movement in the most restrictive layer is moderately high.
Available water to a depth of 60 inches is high. Shrink-swell potential is low. This soil is
not flooded. It is not ponded. There is no zone of water saturation within a depth of 72
inches. Organic matter content in the surface horizon is about 4 percent. This soil does
not meet hydric criteria.
Matapeake The Matapeake series consists of very deep well-drained soils on Coastal Plain uplands.
They formed in a silty mantle and the underlying sandy sediments. Typically, these soils
have grayish-brown and light yellowish-brown silt loam surface layers to a depth of 11
inches. The subsoil, from 11 to 34 inches, is yellowish-brown and strong brown silt
loam. From 34 to 38 inches, the subsoil is strong brown sandy loam. The substratum
layers, from 38 to 62 inches, are light yellowish-brown sandy loam and pale yellow
loamy sand. Depth to a root restrictive layer is greater than 60 inches. Water movement
in the most restrictive layer is moderately high. Available water to a depth of 60 inches
is high. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is
no zone of water saturation within a depth of 72 inches. Organic matter content in the
surface horizon is about 2 percent. This soil does not meet hydric criteria.
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