PERMFILE70701

• Permit No: M1991003
• IBM Index Class Name: Permit File
• Section_Exhibit Name: INDEX
• Media Type: D
• Archive: No

64

TABLE 6. Eattima.ted engineering

Soil aeries and Depth to
aeaeonal
high
Depth
from

USDA texture Classification Coarse
fraction
greater
map symbols water eurtace than 3
table inches
Unified AASATO

Stroupe: SlE___________ >6 0-9 Stony loam, very stony Ioam____ SM, ML A-4 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, 5ne sandy loam, clay CL-ML, CL, A-4 0
loam. SC-SM, SC
7-60 Inam, silt loam, silty clay loam_ CL-ML, CL A~ 0
~IVewlla:•rToD, Trp._..~.. - ' >6 0-lk m, gravelly sandy SM, SC-9bt Art 0-25
Rock outcrop part of Tr0 ~

is too variable to eeti- _
14
11~tkM ~
mate.
Valenta Va_________________ >6 0-4 Fineeand,loamyeand_________ SM,SC~M A-2 0
4-60 Fineeand,eand_______________ SP-SM,SM A-2,A~ 0
Varner: VmE_______________ >6 0-12 Veryetogylaam,veryatony 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-4 0
8-30 Fine sandy loam, Bandy loam_ _ _ SM, SC-SM A-2, A-4 0
30-60 Sandy loam, loamy fine eand____ SM A-2 0
Vn,Ve2___________________ >6 0-8 Loamy fine sand, loamyeand___ SM A-2 0
.
For Otero part o[ Vat, 8-30 Fine sandy loam, Bandy loam_ _ _ SM, SC-SM A-2, A-4 0
see Otero series. 90-60 Sandy loam, loamy fine eand____ SM A-2 0
Wetmore: WE______________ >6 0-12 Gravellycoaraeeandyloam_____ SC-SM,SC A-2 6-20
For Mortenson part, see 12-18 Gravelly coarse sandy loam, SC, GC A-2 6-40
Mortenaon series. Bandy clay loam.
18 Unweathered bedrock.
Wiley: Wk_________________ >6 0-6 Silt loam, loam________________ CL-ML, CL A-d, A-6 0
For Kim part, see Kim 6-15 Silty clay loam, silt loam_______ 'CL A-6 0
aeries. Ib-50 Silt loam, silty clay loam, loam__ GL-ML, CL A-4, A-6 0
50-60 Weathered shale and sandstone.
Wormser: Wo_______________ >6 0-4 Silt loam_____________________ ML,CL-ML A-4 0
4-39 Clay loam, clay, silty clay loam_ CL A-6, A-7 0
89 Unweathered bedrock.
Depth to bedrock ie the distance from the surface
of the soil to the rock layer (fig. 7).
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 50 percent
silt, and less than 62 percent sand. If the soil contains
gravel or other particles coal•eer than sand, an ap-
ropriate modifier is added, for example, "gravelly
~oamy sand." "Sand," "silt," "clay," and some of the
other terms used are defined in the Glossary of this
soil survey.
SOIL SURVEY
Permeability is that quality of s 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 6 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 exp]ained in the
Glossary.
Salinity refers to the amoulit of soluble salts in the
soil. It is expressed as the electrical conductivity of the
jai