PERMFILE130959

• Permit No: M1990143
• IBM Index Class Name: Permit File
• Doc Name: SMALL TREES
• Media Type: D
• Archive: No

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SOIL SURVEY
TABLE 5. Estimated engineering

Soil aeries and Depth to
seasons]
high
Depth
from

USDA texture Classification Coarse
fraction
greater
map eymbob water surface than 3
table inches
Unified AASHTO
Fw lnda P~m.t
Stroupe: StE________________ >6 0-9 Stony loam, very stony loam____ SM, ML A~ 45-70
9-25 Stony clay, very stony clay, GC A-6, A-7, A-2 30-50
very stony clay loam.
25 Unweathered bedrock.
Table Mountain: TM________ >6 0-7 Loam,fineaandyloam,clay CL-ML,CL, A-4 0
loam. SC-SM, SC
7~0 Loam, silt loam, silty clay loam_ CL-ML, CL A~ 0
Tnaveadlla: ToO,TrG_______ >6 0-14 Sandylogm,gravel~yeandy SM,SC~M A-2 0-25
Rock outcrop part o[ TrG loam.
is too variable to eati- 16 Unweathered bedrock.
mate.
Valenta Va_________________ >6 0-4 Fine sand, loamy eand_________ SM, SC-SM A-2 0
d-60 Fine sand, eand_______________ SP-SM,SM A-2,A~ 0
Vamer: VmE_______________ >6 0-12 Veryetonylaam,verystony GC A-6 30-60
Rock outcrop part is too clay loam.
variable to estimate. 12 Unweathered bedrock.
Vona:
Vo________________________ >6 0-8 Sandy loam___________________ SM, SC-SM A-2, A~ 0
8-90 Fine Bandy loam, sandy loam_ _ _ SM, SC-SM A-2, A-4 0
30-60 Sandy loam, loamy fine eand____ SM A-2 0
Vn Va2___________________ >6 0-8 Loamy fine sand, loamy eand___ SM A-2 0
k`'or Otero part of Vat, 8-30 Fine sandy loam, Bandy loam___ SM, SC-SM A-2, A~1 0
see Otero series. 30-60 Sandy loam, loamy fine eand____ SM A-2 0
Wetmore: WE______________ >6 0-12 Gravelly coarse sandyloam_____ SC-SM,SC A-2 5-20
For Mortensen part, see 12-18 Gravelly coarse sandy loam, SC, GC A-2 5~0
Mortensen aeries aandy clay loam
18 Unweathered bedrock.
Wiley: Wk_________________ >6 0-6
6 Silt loam, loam________________
l
l
Sil
il
l CL-ML,CL
'CL A~,A-6
A
6 0
0
For Kim part, see Kim fr1 ty c
ay
oam, s
t
oam_______ -
aeries. 15-50 Silt loam, silty clay loam, loam__ CL-ML, CL A-4, A-6 0
60-60 Weathered shale and sandstone.
Wormser: Wo_______________ >6 0~ Silt loam_____________________ ML, CL-ML A-4 0
4-33 Clay loam, clay, silty clay loam_ CL A-6, A-7 0
93 Unweathered bedrock.
Depth to bedrock is the distance from the surface
of the soil to the rock layer (fig. ?).
Depth to seasonal high water table is the distance
from the surface of the soil to the highest level that
ground water reaches in the soil in most years.
Soil texture is described in table 6 in the standard
terms used by the Department of Agriculture. These
terms take into account the relative percentages of
sand, silt, and clay in soil material that is less than 2
millimeters in diameter. "Loam," for example, is soil
material that is 7 to 27 percent clay, 28 to 60 percent
silt, and less than 62 percent sand. If the soil contains
gravel or other particles coal•ser than sand, an ap-
propriate modifier is added, far example, "gravelly
loamy sand." "Sand," "silt," "clay," and some of the
other terms used are defined in the Glossary of this
soil survey.
Permeability is that quality of a soil that enables it
to transmit water or air. It is estimated on the basis
of those soil characteristics observed in the field,
particularly structure and texture. The estimates in
table 5 do not take into account lateral seepage or such
transient soil features as plowpans and surface crusts.
Available water capacity is the ability of soils to
hold water for use by most plants. It is commonly de-
fined as the difference between the amount of water
in the soil at field capacity and the amount at the wilt-
ing point of most crop plants.
Reaction is the degree of acidity or alkalinity of a
soil, expressed as a pH value. The pH value and terms
used to describe soil reaction are explained in the
Glossary.
Salinity refers to the amount of soluble salts in the
soil. It is expressed as the electrical conductivity of the