PERMFILE45640

• Permit No: M1977223
• IBM Index Class Name: Permit File
• Doc Date: 9/9/1977
• Doc Name: REGULAR 112 PERMIT APPLICATION
• Media Type: D
• Archive: No

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EXHIBIT I/J (Cont'd)
SO1L SURVgY SF.RI6S 1900, NO. 28
T.tol.e 7.-3feciawaical wart chemical properties

Particle size distribution- nfoisture
tension-
Solt name, sample
Horizon
Depth
v o o ° n
° ,-. ,-, ~ Textural
numbe4 and locution ~^ ,° °.. o E E g class
y
E .: z
^ E c,
v,-, ~
E o E c
o
a
r
;E p^ ~5
E ~E ° ^•
o c° o c

u 2
E w

o

•~•

° 0
o
°
9
c
o 0 o m e .c o 0 3
c fi
>'c' n o v° c o ~'O ~ E a w o m
i U W ;i ;q J am. ..
!n. Yrt. Yd. Prl. I§t. Yr1. YrI. Prl. Pcf. fyt. Yd. Yrr.
Rocky Ford clay
loam:
S60 Colo-50-4 Ap 1 0-4 r 0. 3 ~ 0. 5 ' 0.4 ° 1. 4 ° 7. 4 56.5 33.5 30.8 ° 34.1 Silty clay ° 27.8 30.6
(1-3); 0.3 mile loam.
N. and 100 Apt 4-9 °. 2 '. 3 '. 3 ° 1. 1 ° 6. 5 54.8 36.8 ?8. 6 ° 33.5 Silty clay ^ ^_7.8 30.8
feet E. of Sy: loam.
corner of eec. AC 0-18 9.2 9.4 9.0 92.8 '16.0 55.8 24.2 5'2.2 °21.7 Silt loam___ ______ ______
34, T. 22 S.,
R. 43 L5'.
wueyy silt loam:
S58 Co1o-50-8 Ap 0-4 ~.1 .2 .3 ],5 19.9 55.5 ?2.6 60.8 ]5.7 $dt loam___ 36.0 21.4
(1-9); 0.15 B27t 4-]U . 1 . 1 ' .2 ' 1. 1 ' 14.4 57.5 26.6 53.5 19.3 Gilt loom to 35.9 23.6
mile E. and silty clay
0.13 mile S. of loam.
A' W. corner of ~ B2?t 10-17 . 1 . 1 ' . 1 ' . 3 ' 9. 7 62.2 27.0 5 L, 0 2l. 5 Silty clay 37.7 ^_4. 4
sec. 8, T. 24 loam to
S., R. 95 W, silt loam.
Baca . 1 i-29 <. 1 . 1 ' . 1 r . 5 ' 8. 4 65.8 25.1 50.0 24.6 Silt loam_ __ 39.9 26.9
Clca ?9-41 <. 1 . 1 ' . 1 ' .6 ' 9.8 66.1 ''?3.3 52.0 29.4 Silt loam___ 41.7 28.5
C2 41-60 <. 1 . 1 ' . 1 ' . S ' 10.9 67.3 2D. 8 54.5 2}, 3 Silt loam_ __ 42.8 27.7
° Contains a trace of calcium carbonate concretions.
° Cantaine a tew calcium carbonate concretions.
° The Cl horizon of Sample No. S58 Colo-50-2 (1-7) and s0 of the horizons in Snrople Nos. S60 Colo-50-9 (1-7) and S60 Colo-50-4
(i-3) contained a few grains (truce) between 2 mi0imetere and ?: inch in diameter. A truce is less than 5 percent.
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zone. The Wiley soil has less clay 111 the B horizon than
`' do the Baca, Nepesta, and Richfield soils, and the Colby
sail hsa less clay throughout the profile. The Nepesta
and Rocky Ford soils have more clay in the surface
layer than they do in the horizons below the surface
i,. layer.' This is the result of siltation, which has caused
'clap to accumulate in the surface layer.
Table 7 also gives the chemical characteristics for the
profiles sampled. The analyses of these profiles show
generally n mildly or moderately alkaline reaction. In
general, the pH. ranges mostly from 7.8 to 8.2, but the
lower C horizons of solve of the profiles are slightly
more alkaline and in places their pH is as high as S.G.
The Richfield soil is the most nearly neutral; the pH of
its B21t horizon, n'hich is nonculcareous, is 7.0. The pH
fora 1:5 dilution, not given in the table, is about 0.5
~ higher than that fora 1:1 dilution.
The carbon-nitrogen ratio in the upper horizons of
these profiles ranges from 9 to 1°, but the Richfield soil
has the widest ratio of the nonirriga[ed soils. The
Nepesta and Rocky Ford soils that are irrigated hate
a wider ratio than the other soils. The content of or-
ganic cnrbal and of nitrogen in the upper horizmis is
highest in the Nepesta and Rocky Ford soils and lowest
In the Colby soils. The Baca and tilriley soils have about
the same amount of organic carbon and nitrogen in the
d horizon, but the Bacn soils have more organic carbon
and nitrogen in the B horizon than the Wiley soils. Of
the nonirngated soils, the Baca, Colby, Richfield, and
~Yiley, the Richfield soil has the widest carbon-nitrogen
ratio and the highest content of organic carbon. In al]
the profiles, there is n gradual decrease in the content
of organic carbon suet nitrogen with increasing depth.
The Baca, Richfield, and Wiley soils have an accumu-
lation of calcium carbonate in the ca horizons. The ca
horizons contain much more calcium carbonate than the
horizons above or below them, which is evidence of
leaching of lime. The Baca and Richfield soils have
stronger ca horizons than the Wiley. The Colby profile,
on the other hand, does not show n strong accumulation
of lime. The surface layer of the Colby soil contains
less lime than the lower horizons because much of the
lime formerly in the surface layer has been lost through
wind erosion e'hen the particles of silt and clay were
blown awe}•. The parent material of all of these soils
contains about 6 to 7 percent calcium carbonate. In the
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