HomeMy WebLinkAbout952232.tiffBAYER
ASSOCIATES
SOTLS REPORT
MARTIN BROTHERS PLANNED UNIT DEVELOPMENT II
FEBRUARY 22, 1994
TAKEN FROM SOIL SURVEY OF WELD COUNTY, COLORADO,
SOUTHERN PART, BY THE UNITED STATES DEPARTMENT OF
AGRICULTURESOIL CONSERVATION SERVICE IN COOPERATION
WITH COLORADO AGRICULTURE EXPERIMENT STATION, ISSUED
SEPTEMBER, 1980.
Engineers / Surveyors / Planners
952232
LEGEND
44 nlney loamy sand, 1-3% slopes
70 Valent sand, 3-9% slopes
72 Vona loamy sand, 0-3% slopes
--73 Vona loamy sand, 3-5% slopes
74 Vona loamy sand, 5-9% slopes
From Crabb, 1980, Soil Survey of Weld County,
Colorado, Southern Part
SOIL MAP
195 -ACRE SITE
W4 SECTION 12
Tlfi R66W
FIGURE 1
952232
CHARACTERISTICS OF SOILS
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ermeabilit
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U 'o ad fn N m ai ca
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N E o v a) v a) ca -O
Soil Name
Valent sand
Colorado, Southern Part, USDA Soil
b
r)
a)
4W
O
a)
7.
S-4
C a)
C) U
.ri
rI
H 0)
re\ in C. O a)
I I I
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O O
CO -H
A T y) ca
e
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ri H '—tco
co 'o as v m It si o
C C CC G C U U
o aS pas ow
.'r Ca U) > o
N N\
O -S C` C-- C�
C')
N
95^23?
102
SOIL SURVEY
C
TABLE 6. --BUILDING SITE DEVELOPMENT --Continued
Soil name and Shallow Dwellings
map symbol s excavationDwellings
without with
basements basements
r_
Small
commercial
buildings
Local roads,
and streets
44
;Slight
Olney
45
Olney
46, '17
Olney
'I B
Olney
49
Osgood
50, 51
Otero
52, 53
Otero
54
Paoli
55
Paoli
56
Renohill
57
Renohlll
:Slight
Slight
Slight
Slight
ii Ight.
Slight
Moderate:
Severe:
cutbanks cave.
Slight
Slight
Slight
Slight
Moderate:
depth to rock,
too clayey.
,Moderate:
; depth to rock,
: too clayey.
58, 59 ;Severe:
Shingle ; depth to rock.
60•:
Shingle
Re no hill
51
Tassel
6'
Terry
63
Terry
64
Thedalund
65
Thedalund
;Severe:
: depth to rock.
Moderate:
depth to rock,
too clayey.
Moderate:
depth to rock.
Severe:
depth to rock.
Severe:
depth to rock.
Moderate:
depth to rock.
Moderate:
depth to rock.
See footnote at end of table.
Slight
Slight
Slight
::light
Slight
Sikh'
Severe:
floods.
Slight
Moderate:
low strength,
shrink -swell.
Moderate:
low strength,
shrink -swell.
Severe:
depth to rock.
Severe:
depth to rock.
Moderate:
low strength.
Shrink -swell.
Moderato:
depth to rock.
Moderate:
depth to rock.
Moderate:
depth to rock.
Moderate:
low strength.
Moderate:
low ntrene,t.h.
Slight
Slight
Slight
Slight
Slight
•IIRhI
Severe:
floods.
Slight
Moderate:
low strength,
depth to rock,
shrink -swell.
Moderate:
low strength,
depth to rock,
shrink -swell.
Severe:
depth to rock.
Severe:
dept 11 t.n rock.
IL,•lerate:
low strength,
depth to rock,
"hrink-swell.
•IepLli I„
•evern:
depth to rock.
are:
depth to rock.
'tolerate:
depth to rock.
Moderate:
depth to rock.
Moderate:
slope.
Slight
Moderate:
slope.
Slight
Slight
Moderate:
slope.
Severe:
floods.
Slight
Moderate:
low strength,
shrink -swell.
Moderate:
slope,
low strength,
shrink -swell.
Severe:
depth to rock.
Severe:
depth to rock.
Moderate:
slope,
low strength,
shrink -swell.
nvore:
Moderate:
depth to rock.
Moderate:
depth to rock,
slope.
Moderate:
low strength
Moderate:
low strength
slope.
low strength.
Moderate:
low strength.
Moderate:
low strength.
Moderate:
low strength.
Slight.
Slight.
Slight.
Moderate:
low Strength,
frost action.
Moderate:
low strength,
frost action.
Severe:
low strength,
shrink -swell.
Severe:
low strength,
shrink -swell.
Severe:
depth to rock.
Severe:
depth to rock. '
Severe:
low strength,
shrink -swell.
Mod er'n Le:
depth to rock.
Moderate:
depth to rock.
Moderate:
depth to rock.
;Moderate:
I low strength.
;Moderate:
i low strength.
952232
,WEL.0 COUNTY, COLORADO, SOUTHERN PAT
TAB _ 6. --BUILDING SITE DEVELOPMENT --Continued
103
Soil name and
map symbol
66, 67
Ulm
68°
Ustic
Torriorthents
69
Valent
70
Valent
71':
Valent
Loup
_
Shallow Dwellings I Dwellings
excavations without ; with
—_._ ___ _ basements basements
Moderate:
too clayey.
Severe:
small stones,
cutbanks cave.
Severe:
shrink -swell,
Moderate:
slope.
Severe:
shrink -swell,
Moderate:
slope.
Severe: Slight Slight
cutbanks cave.
;Severe: ':II Ight. ;Slight
pothook:, ,•ave. I ,
Small
commercial
__buildings
Severe:
shrink -swell.
Moderate:
slope.
Slight
Local roads
and streets
Severe:
low strength,
shrink -swell.
Moderate:
slope.
Slight.
Moderate:
slope.
;Slight.
;Severe:
; cutbanks cave.
;Severe:
' wetness,
I outbanks cave.
72
Vona
73, 74
Vona
75, 76 ;Slight
Vona
77
Vona
78, 79
Weld
80
t
Weld
81°, 82':
Wiley
Colby
830:
Wiley
Colby
Slight
Slight
:Slight
1:111; 1, 1, _.-_-_-___..
Severe:
fluorin.
"light
Slight
;Slight
:Slight
, I ,. :
I ,. I tie .is,
I
ght Slight
Moderate:
Slope.
Severe:
wetness;
floods.
Slight ;Moderate:
slope.
:Slight
;Slight
•
;Slight ;Moderate:
;Moderate:
; low strength, ; low strength,
: shrink -swell. I shrink -swell.
;Slight
:Moderate:
; low strength,
I shrink -swell.
;Moderate:
: low strength,
; shrink -swell.
:Slight ;Moderate:
:Moderate:
I low strength, I low strength,
1 shrink -swell. ; shrink -swell.
;Slight ;Slight ;Slight
Slight
Moderate:
slope. •
Moderate:
low strength,
shrink -swell.
Moderate:
low strength,
slope,
shrink -swell.
Moderate:
low strength,
shrink -swell.
Slight
:Slight.
:Severe:
; wetness.
Moderate:
low strength.
Moderate:
low strength.
Moderntc:
low strength.,
Moderate:
low strength.
Moderate:.
low strength,
shrink -swell,
frost action.
Moderate:
low strength,
shrink -swell,
frost action.
Moderate:
low strength,
shrink -swell.
Moderate:
low strength.
;Slight :Moderate: Moderate:
Moderate: Moderate:
I low strength,
low strength, low strength, low strength,
shrink -swell. shrink -swell. slope,
shrink- shrink -swell.
swell.
;Slight ;Slight ;Slight
Moderate: Moderate:
slope.
' y__--___--._-_- low stren r,th.
a See map unit description for the composition and behavior of the map unit.
i
106
SOIL SURVEY
Soil name and Septic tank 1 Sewage lagoon Trench
map symbol absorption areas
sanitary
fields
landfill
TABLE 7. --SANITARY FACILITIES --Continued
_r______ r____.. -
III
;Severe: :M
Munn ; pert; slowly. e1ct1eln, 'Slight
s li moos.
r
44, 45, 46, 47,I I
4 g ;Slight ;Severe: 'Slight
Olney
seepage.
119 ;Slight
Osgood p .Severe:
seepage.
50, 51, 57 Slight ;Severe:
Otero
seepage.
51 ;Slight. ;Seven.:
Otero
Slope
seepage,
•
511 ;Slight ;Severe:
Paoli
; seepage,
Ipaoll :Slight Sever,.
seepage.
56, 57 'Severe: ;Severe:
Renohill pores slowly, 1 depth to rock.
depth to rock.
58, 59 Severe: ;Severe:
Shingle depth to rock. depth to rock.
60+:
Shingle
Renohill
61
Tassel
62, 63
Terry
64, 65
T hod alund
66
Illm
67
Ulm
68'
list ie Torriorthents
169, 70
Severe:
depth to rock.
Severe:
peres slowly,
depth to rock.
Severe:
depth to rock.
Severe:
depth to rock.
Severe:
depth to rock.
Severe:
peres slowly.
Severe:
perez slowly.
Moderate:
slope.
Severe:
depth to rock.
Severe:
depth to rock.
Severe:
depth to rock,
seepage,
slope.
Severe:
depth to rock,
see p:0,e
Sr v o..
depth lo rock.
SI ig•bt.-•
Moderate:
slop.
Severe:
.r1pane,
small stones.
Area
sanitary
landfill
Slight
Slight
Daffy cover
for landfill
Fair:
too clayey.
Good.
Severe:
seepage,
Slight
Slight
Severe:
seepage.
Severe:
seepage.
Severe:
depth to rock.
Severe:
seepage.
Slight
Slight
Severe:
seepage,
Severe:
seepage.
Slight
Severe: :Slight
depth to rock. ,
Severe:
depth to rock.
Severe:
depth to rock.
Severe:
depth to rock,
seepage.
:Slight
;Slight
;Severe:
seepage.
Severe: :Slight
depth to rock. ;
;
Severe: :Slight
depth to rock. I
Moderate: :Slight
I...* clayey,
N, .•L r.,Le; ;Slight.
Loo clayey,
Severe:
seepage,
ton sandy.
;Severe:
seepage.
hair:
too sandy.
Good.
Good.
Good.
Good.
;Fair:
1 too clayey,
1 thin layer.
;Poor;
; thin layer.
:Poor:
1 thin layer.
:Fair:
too clayey,
thin layer.
Poor:
thin layer,
area reclaim.
Fair:
thin layer,
area reclaim.
Fair:
thin layer.
Poor:
Coo clayey.
Poor:
too clayey.
Poor:
too sandy,
small stones.
Valent
Slight
Severe:
eepa,{e.
Severe:
too sandy,
seepage.
;Severe:
; seepage.
Poor:
too sandy.
71':
Valent
Slight
See footnote at end of table.
:evert:
seepap,e.
Severe: Severe:
too sandy, ; seepage.
seepage. •
•
Poor:
too sandy.
952232
a.P COUNTY, COLORADO, SOUTHERN PART
TABLE r. --SANITARY FACILITIES --Continued
r — �
1O7
Soil name and
map symbol
Septic tank
absorption
fields
Sewage lagoon Trench Area
areas sanitary sanitary
landfill 1 landfill
Daily cover
for landfill
l':
Loup
'2, 73
Vona
(e
Vona
:Severe:
I wetness,
; floods.
•
;Slight ;Severe:
I seepage.
;Slight :Severe:
; seepage,
Severe:
wetness,
seepage,
floods.
I .Sine. ,
;Severe: ;Severe:
wetness, wetness,
seepage, 1 seepage,
floods. : floods.
Slight ;Slight
Slight :Slight
Poor:
wetness.
Good.
Good.
15, 76, 77
Vona
/B
Weld
19, 80
Weld
Si*:
Wiley
Colby
82', 83•:
Wiley
Colby
Slight
Moderate:
peres slowly.
Mndnratu:
peres slowly.
Moderate:
peres slowly.
Slight
Moderate:
pares slowly.
Slight
;Severe:
.
aeepag,.
;Moderate:
I seepage.
I MuderalP .
slope,
see
:Moderate:
seepage.
;Moderate:
, seepage.
•
;Moderate:
I seepage,
I slope.
;Moderate:
I seepage.
Slight
Slight
Slight
Slight
Slight :Good,
Slight ;Good.
Slight :Good.
Slight
Slight
:Fair:
; too clayey.
;Good.
•
Slight ;Fair:
too clayey.
Slight
• See map unit description for the composition and behavior of the map unit.
Good.
952232
l
1 COUNTY, COLORADO, SOUTHERN PA(
l..:ILE 8. --CONSTRUCTION MATERIALS --Continued
109
Soilname and
map symbol
29, 37
Jules burg
31, 32, 33, 34
Kim
35x:
Loup
Roel
36x:
Midway
Shingle
37, 38
Nelson
39, 40
Nunn
42
Nunn
43
Nunn
[4, 45
Olney
16, 47, 44
Olney
19
Osgood
n, 51, 5?, 53
Otero
.4, 55
Paoli
L, 57
Renohill
'8, 59
Shingle
Shingle
Road fill
Fair:
low strength,
frost action.
Fair:
low strength.
Poor:
wetness.
Fair:
wetness.
Poor:
shrink -swell,
low strength,
thin layer.
Poo,'
thin layer.
Poor:
thin layer.
Poor:
shrink -swell,
low strength.
Poor:
shrink -swell,
low strength.
Poor:
shrink -swell,
low strength.
:Fair:
: low strength.
;Fair:
low strength.
;Good
;Good
Fair:
low strength,
: frost action.
:Poor:
: low strength,
thin layer.
:Poor:
: thin layer.
:Poor:
1 thin layer.
See footnote at end of table.
Sand
Poor:
excess fines.
Unsuited
Fair:
excess fines.
Fair:
excess fines.
lnsul Led--.
I luml l I , L
Unsuited
Unsuited
Unsuited
Unsuited
Poor:
excess fines.
Poor:
excess fines.
Poor:
excess fines.
Pour:
Cxcis:, fines.
Unsuited
Irl .sui Led
Unsuited
h,:'.0 il,.,1
Gravel
Unsuited
Unsuited
Topsoil
Unsuited:
excess fines.
Unsuited
Unsuited
Unsuited
Unsuited
Unsuited
Unsuited
Unsuited
;Unsuited
:Unsuited
Unsuited
unsuited
Unsuited
Unsuited
Unsuited
Unsuited
ted
Good.
Good.
Poor:
wetness.
Fair:
thin layer.
Poor:
too clayey.
;Poor:
area reclaim.
:Good.
:Fair:
I thin
layer.
Fair:
thin layer,
too clayey.
Poor:
too sandy.
Fair:
I too sandy,
I thin layer.
Good.
Poor:
too sandy.
Good.
Good.
Poor:
thin layer.
Poor:
area reclaim.
Poor:
area reclaim.
952232
i
110
SOIL. SURVEY
TABLE 8. --CONSTRUCTION MATERIALS --Continued
--r—
Soil name and• Roadflll
map symbol
60':
Renohill
61
Tassel
62, 63
Terry
64, 65
Thedalund
66, 67
Ulm
68'
Ustic Torriorthents
;Poor:
: low strength,
I thin layer.
:Poor:
thin layer,
: area reclaim.
:Poor:
: thin layer,
; area reclaim.
:Poor:
: thin layer.
:Poor:
shrink -swell,
-
I low strength.
:
:Good
Unsuited
Unsuited
...----- r -- -------------
r
'and
Gravel•
.T
,irn.ult.ert:
I thin layer.
:Unsuited
Unsuited
Unsuited
Unsuited:
thin layer.
I 69, 70
;Good :Fair
Valeenn t :Unsuited
.
11+: i
Valent :Good :Fair
1
Loup ;Poor:
Fair: ,Unsuited:
wetness. excess fines.
Topsoil
Poor:
thin layer.
:Poor:
: area reclaim.
Fair:
small stones.
;Unsuited ;Good.
Unsuited -
:Unsuited :Fair:
I too clayey.
Good :Good ;Poor:
small stones,
, too sandy.
72, 73, 74, 75, 76,
77
Weld ; low strength,
shrink -swell, : too clayey.
: frost action. : :
i
8t+ 82+ 83+
Wiley ;Fair: :
tlnau l I ,•.I ;Unsuited ;Fair:
, low strength, ; too clayey.
: shrink -swell. '
,
Colby
:Fair: ;Unsulted• :Unsuited ;rood.
: low strength.
I
• See map unit description for the composition and behavior of the map unit.
Unsuited
Poor:
too sandy.
;Poor:
: too sandy.
;Poor:
I excess fines. : wetness.
;Unsuited :Good.
N
Fair: :Poor:
Vona low strength. : excess fines.
7 , 79, 60 ;Fair:
Unsuited ;Unsuited
,Fair:
952232
I
WELD COUNTY, COLORADO, SOUTH`E(g RT
TADLE 9. --WATER MANAGEMENT--Contl.,aed
113
40
Solt name and
map symbol
Nunn
4i
Nunn
47
Nunn
'i3
Nunn
Pond Embankments, Drainage
reservoir dikes, and
areas levees
Favorable
Favorable
Favorable
F nvnr ohle
Compressible,
shrink -swell,
hard to pack.
Compressible,
shrink -swell,
hard to pack.
Irrigation
Terraces
and
diversions
Grassed
waterways
Peres slowly,
slope.
Peres slowly ---
Compressible, ;Peres slowly,
shrink -swell, ; slope.
hard to pack.
,'loe• ,lhle ;Peres slowly ---
44
Olney
Seepage,
slope.
Peres slowly,
slope.
Peres slowly ---
Peres slowly,
slope.
Peres slowly ---
Peres slowly ---
Peres slowly ---
Peres -slowly---
Peres slowly ---
n
Favorable.
Favorable.
Favorable.
Favorable.
Pi pin''., .
low strength.
Soil blowing,
droughty.
Erodes easily,
piping.
Erodes easily.
Olney
45
Olney
47, 48
Olney
'49
Osgood
Otero
1, 5, 53
Otero
iII
Paoli
II'nohill
Henohill
5g, 59
Shingle
60k:
Shingle
Ile no hill
61
Tassel
57
Terry
Seepage,
aloe, .
Seepage,
slope.
Seepage,
slope.
Seepage
Seepage
Seepage,
slope.
Seepage
Seepage
Depth to rock
Slope,
depth to rock.
Slope,
depth to rock.
Slope,
depth to rock.
Slope,
depth to rock.
Depth to rock,
slope.
Depth to rock,
seepage.
See footnote at end of table.
Pi pi nr,
I„w :,I,,., utI I,.
Piping,
low strength.
Piping,
low strength.
Piping
Piping,
seepage.
Piping.,
seepage.
Piping,
loo strength.
Piping,
low strength.
Low strength,
thin layer,
compressible.
Low strength,
thin layer,
compressible.
Low strength,
thin layer.
Low strength,
thin layer.
Low strength,
thin layer,
compressible.
Erodes e.,:,Ily,
thin layer.
Piping,
Chin layer.
STT-
Favorable
Slope
Favorable
Favorable
Slope
Favorable
Slope
Depth to rock,
pores slowly.
Slope,
depth to rock,
peres slowly.
Depth to rock,
slope.
Depth to rock,
slope.
Slope,
depth to rock,
peres slowly.
II,•I nd
:lope,
; routing depth.
Soil blowing,
droughty,
slope.
Favorable
Slope,
erodes easily.
Soil blowing ---
;Droughty
;Slope,
: erodes easily,
I droughty.
Favorable
Slope
Rooting depth,
slow intake.
Slope,
routing depth,
slow intake.
Slope,
rooting depth.
Slope,
rooting depth.
Slope,
rooting depth,
slow intake.
Droughty,
rooting depth.
Slope,
rooting depth,
soil blowing.
Erodes easily,
piping.
Erodes easily,
piping.
Erodes easily,
piping.
Too sandy,
piping.
Erodes easily,
piping.
Erodes easily,
piping.
Piping
Piping
Depth to rock,
peres slowly.
Depth to rock,
peres slowly.
Depth to rock
Depth to rock
Depth to rock,
peres slowly.
Depth to rock,
erodes easily.
Depth to rock,
piping,
soil blowing.
Erodes easily.
Erodes easily.
Erodes easily.
Erodes easily.
Erodes easily.
Erodes easily.
Favorable.
Favorable.
Rooting depth,
peres slowly.
Rooting depth,
peres slowly.
Rooting depth.
Rooting depth.
Rooting depth,
peres slowly.
Rooting depth,
erodes easily
Rooting depth,
soil blowing.
952232
114
Soil name and
map symbol
nedalund
hetalund
In
:tic
Torriorthents
client
talent
Pond
reservoir
areas
Slope,
depth to
seepage.
SOIL SURVEY
TABLE 9. --WATER MANAGEMENT --Continued
r
Embankments,
dikes, and
levees
Piping,
rock,; thin layer.
Depth to rock,
slope.
Depth to rock,
slope.
Favorable
Slope
Seepage,
slope.
Seepage,
slope.
Seepage,
slope.
Low strength,
piping,
thin layer.
Low strength,
Piping,
thin Iny,•r.
Low strength,
shrink -swell,
compressible.
Low strength,
nhr Ink -swell,
compressible.
Seepage
Piping,
seepage.
Drainage Irrigation
Slope,
rooting depth.; rooting depth,
soil blowing.
Slope, Slope,
depth to rock. rooting depth.
Slope,
Slope,
depth to rock.: rooting depth.
F a vu r a I, In
Slope
Slope
Slope
Peres slowly,
erodes easily.
- Slope,
peres slowly,
erodes easily.
Slope,
droughty.
Slope,
erodes easily,
droughty.
Terraces
and
diversions
7 --
Slope,
depth to rock,
soil blowing.
Depth to rock
Depth to rock
Peres slowly ---
Peres slowly ---
Too sandy,
slope.
Erodes easily,
piping.
Grassed
waterways
Slope,
rooting depth,
soil blowing.
Rooting depth.
Slope,
rooting depth.
Erodes easily.
Erodes easily.
Droughty,
slope.
Erodes easily.
Iping,
seepage.
ope
ope,
erodes easily,
droughty.
Erodes easily,
piping.
ope,
erodes easily.
/alent
oup
Seepage,
slope.
Seepage
Piping,
seepage.
Seepage,
piping.
Slope
Poor outlets,
cutbanks cave.
Slope,
erodes easily,
droughty.
Wetness,
seepage.
Erodes easily,
piping.
Not needed
Slope,
erodes easily.
Not needed.
, 73
on
Iona
Seepage,
slope.
Seepage,
slope.
Piping, Slope
erodes easily„
seepage.
Piping,
erodes easily,
seepage.
Slope,
fast intake,
seepage.
I„p
fast intake,
seepage.
Piping,
erodes easily.
pl ping,
erodes easily.
Erodes easily.
Slope,
erodes easily.
lona
I,, 77
Jona
J eld
1, 90
Weld
IC:
Wiley
Colby
Seepage,
slope.
Seepage,
slope.
Seepage
Seepage
Slope,
seepage.
Seepage
See footnote at end of tabl-e.
Piping,
erodes easily,
seepage.
Piping,
erodes easily,
seepage.
Low strength ---
Low strength ---
Piping,
low strength.
Low strength,
piping.
Env'', ',hie
Slope
Pares slowly Slope,
peres slowly..
Peres slowly ---
Favorable
Fast intake,
v••,•pnge.
f a,ct Intake,
seepage.
I'err.s slowly,
sl•,w intake.
Slope,
peres slowly,
-slow intake.
Favorable
Favorable
Piping,
erodes easily.
Piping,
erodes
easily.
Piping,
peres slowly.
Piping,
peres slowly.
Erodes easily.
Erodes easily.
Peres slowly.
Peres slowly.
Piping ;Erodes easily.
Favorable iFovorable.
952232
126
Soil name and
map symbol
16':
Shingle
38 -------------
Olson
9, 40 -------------
Nunn
1, 42 -------------
Nunn
SOIL. SURVEY
TABLE 12. --ENGINEERING PROPERTIES AND CLASSIFICATIONS --Continued
;Depth;
In
Classi_f lcatl6n-_-_, USDAtexturetexture -- -r-----
men is
Unified
AASNTO > 3
----'r----;inches 4
0-6 ;Loam
6-18;Clay loam, loam
18 ;Unweathered
bedrock.
0-9
9-30
30
0-9
9-29
?9-60
Fine sandy loam
Fine sandy loam,
sandy loam.
Weathered
bedrock.
Loam
Clay loam, clay
Clay loam, loam,
sandy loam.
0-9 ;Clay loam
9-2'9:Clay loam, clay
29-601 Clay loam, loam,
sandy loam.
0-9
9-30
30-60
N, 45-------------; 0-10
.Incy ;10-20
120-25
;25-60
'17, 113 ---------
limey
CL -MI,
CL
Ml., SM
SM, ML
(.I.,
CL, C.11
CL,
CL -ML,
SM-Si:
SC
CL, SL
CD
CL,
CL -ML,
SM-SC,
SC
Loamy sand ------ SM
Clay loam, cloy :CL, CII
Clay loam, loam,: CL,
sandy loam. ' CL -MI.,
SM-SC,
SC
Loamy sand ;SM
Sandy clay loam ;SC, CL
Sandy loam, ;SC
sandy clay ; SM-SC,
loam, fine ; CL,
sandy loam. ; CL -ML
Fine sandy loam,;SM
loamy fine
sand.
Pct
A-4
A-6 I 0
Percentage passing
sieve number --
10
/'•-100175-100
75-100;75-100
A-4 1 0-5 75-100;75-100
A-4, A-2: 0 75-100175-100
A -r, 0-5
A-'', A-7; n-5
A-'1, I 0-5
A-6, I
A-?
A
n-6,
A-4
A-6,
A-2
A-7;
0-S
U-5
0-5
A-2 1 0-5
A-6, A-7; 0-5
A-4 ; 0-5
A-6,
A-2
A-?
A-6
;A-4, A-6
;A-2
n
0
0
95-100
95-100
80-I00
95-100
95_100
80 -too
95-100
95-100
80-109
95-100
95-100
95-100
95-100
80-95
90-100
80-100
80-95
90-100
80-100
80-95
90-100
80-100
90-100
90-100
95-100
95-100
4D
70-95
65-100
70-90
60-85
70-95
85-95
60-90
70-95
85-95
60-90
60-80
85-95
60-90
60-90
80-100
75-95
70-95
Liquid ; Plas
I limit ; ticity
200 I ; indek
Pot
55-75
50-80
45-60
30-55
45-75
65-75
25-75
45-75
65-75
25-75
20-30
65-75
25-75
15-25
40-55
35-55
20-35
25-35 5-10
30-40 ; 10-20
25-40
35-60
15-40
NP
NP
10-20
20-35
5-20
25-40 ; 10-20
35-60 20-35
15-40 ; 5-20
NP
35-60 20-35
15-40 1 5-20
20-40
20-35
NP
10-20
5-15
NP
0-10
10-'n
20-75
25-60
0-22
:good
22-14
34-6U
51, 52, 53------ 0-12
ero 12-60
55
roll
0-20
20-25
25-60
Fine sandy loam ;:;M
Sandy clay loam ;SC, CL
Sandy loam, 'SC,
sandy clay ; SM-SC,
loam, fine 1 CL,
sandy loam. ; CL -ML
Fine sandy loam,; SM
loamy fine
sand.
Sand ISM
Sandy loam :SM
Loamy sand, sand:SM
Sandy loam SM
Sandy loam, fine SM
sandy loam,
gravelly sandy
loam.
Loam
Fine sandy loam,
sandy loam.
Fine sandy loam,
sandy loam.
See footnote at end of table,
ML
SM
SM
A 5
A 'I, n.h
A-'
A-?
A 2. A -II
A-1
A-?
A-2, A -I
A -'I
A-4
A-2, A-4
0
it
0
11
0-1
0-1
95-10n 90-100
"'..Inn on_inn
v5 -Ion 'I',-luu
95-100
11111
Inn
100
9C -inn
90-100
95-100
I00
I00
95-100
75-100
50-100
0 ;95 -inn 90-100
ll ;811-100 80-100
0 175-100,75'-100
70-95
An -ion
75-95
70-95
65-8U
60-80
50-75
50-RO
40-80
75-95
60-85
55-85
20-35
'I 11-55
35-55
20-35
15-30
30-40
10-25
20-35
20-35
55-75
35-50
30-50
I5 -?5
20-4U
20-35
25-35
NP -5
10-20
5-15
NP
NP
NP
NP
NP
NP
NP -5
HP
NP
952232
TABLE 12.--.-dGINFFRTNC PROPERTIES AND CLASSIFICATIOIs-_Cumin..]
WELD COUNTY, COLORADO, SOUTHERN ("
`:ail name and
map symbol
56, 57
Renohill
5R, 59
Shingle
60":
hingle
Renohill
61
Tassel
62, 63
Terry
64, 65
Thedalund
66, 67
Ulm
60`
us tic
Torriorthents
r-- .
,-- Classification __anent- - Percentage p.es;ng
;Depth! USDA texture meats sieve number-- 1
Unified AASHTO ) 3 r.-'--- '— Hell
: inches 4 10 ; 40 ,u
In , Pct r
F t
0-9 Clay loam !CL A-6 ; 0 85-100;80-100 80-95 :70-80 t5 -.C.
9-32 Clay, clay loam !CL, CH A-7, A-6; 0 95-100;90-100 90-100;75-95 3`•-65 ; t:-15
32 Weathered
-_- _-_ ___ -___--
bedrock.
0-6
6-18
18
(1-h
11. III
I li
0-9
9-32
32
0-11
11
0-6
6-18
18-37
37
0-8
8-25
25
0-5
5-19
19-60
0-60
Loam !fl. -Ml.
Clay loam, loam CL
Unweathered -_
bedrock.
'rI -NI.
I I.IV I''. 11,1, Iii.1111 I.
I61wv.,1 har'a.l
b ed r'¢,: k.
Clay loam
Clay, clay loam
Went he rail
bedrock.
Fine sandy loam
Unweathered
bedrock.
Fine sandy loam
Fine sandy loam,
sandy loam.
Fine sandy loam, SM
sandy loam,
loamy fine
sand.
Weathered
bedrock.
CL
CL, CII
ML, :1M
SM, HL
SM, ML
Loam :CL -ML
Clay loam, loam,ICL-ML,
very fine sandy' CL,
loam. SM-SC,
SC
Weathered
bedrock.
Clay loam
Clay loam, clay
Clay loam
Variable
Cl.
Ch
CL
A-4 ; 0-5
A-6 1 0
A-4 I 0-5
A-6 0
75-100;75-100
75-100;75-100
75-100;75-100
75-100175-100
A -h I 0 ;85-100180-100
A-7, n -o; 0 :95-100 90-100
A-4 0 ;95-100 90-100
A-2, A-4 0-5
A-4 0
A-2, A-4; 0-5
A-4
A-6, A-4
A-6
A-6, A-7
A-6
0-5
0-5
0-5
0-5
0-5
;75-100
:75-100
:75-100
80-100
80-100
95-100
75-100
75-100
75-100
75-100
75-100
75-100
75-100
95-100
75-100
75-100
70-95
65-100
55-75
50-80
70-95 155-75
65-100150-80
80-95 170-80
90-100175-95
70-95 140-65
70-90 130-60
70-85 140-60
70-85 125-50
70-95 150-75
70-95 ;40-80
80-100
75-100
75-100
70-80
60-80
60-80
25-35
30-40
25-35
30-40
25-40
35-65
20-35
20-30
25-35
30-40
35-45
30-40
I
I•ler
5-10
10-20
5-10
10-20
10-20 , '
20-35
NP -5
HP
NP
NP
5-10
5-15
10-15
20-30
15-20
69, 70
V a lent
1":
V a lent
0-8 Fine sand
8-60 Fine sand, sand
I' -'{M, SM
A-7
A-2, A-3
0 100
0 ; 100
100
95-100
80-95
75-90
10-30
5-20
I NP
I NP
Loup
0-8
8-60
0-16
16-60
Fine sand
Fine sand, sand
Loamy sand
Fine sand, loamy
sand, sand.
See footnote at end of table.
A-2 0 1 100
RP-SM, SM A-2, A-3 0 ! 100
A-2 0 100
'.P -'M, SM A-2, A-3, 0 1100
100
95-100
100
100
80-95
75-90
50-100
65-100
10-30
5-20
15-30
5-20
952232
NP
NP
NP
NP
r,n
I 28
Soil name and
map symbol
R _
73, 74 ; 0-6
Vona 16-28
;28-60
76, 77 1 0-6
Vona 16-28
28-60
SOIL SURVEY
TABLE 12. --ENGINEERING PROPERTIES AND CLASSIFICATIONS--Continued
-r_.___T____—__..._. _T__ .._.
(la3q{f1C3iLOn
;Depth; USDA texture
Unified AASHTO
L, 79, 80
field
82", 83•:
auey
nlby
Loamy sand ISM
Fine sandy loam,ISM
sandy loam.
Sandy loam, ;SM
loamy sand. ,
A-2, A-4
A-?
Fr ay.- 1 Percentage passiny.__r._.__.
menu sieve number-- Liquid
3 ,
_________ limit
inches; 4 10 40 200
Pet
u
0
Inn
not
100
90-100; 6n -9n
90-100;60-90
90-100150-85
15-30
311-45
15-10
Oct.
Pl:n-
ticity
index
NP
NP
NP
Sandy loam
Fine sandy loam,
sandy loam.
Sandy loam,
loamy sand.
0-8 (Loam
1 8-15 Silty clay loam,
silty clay.
:15-60 Silt loam, loam
I 0-11 Silt loam
'11-60; Silty clay loam,
I I silt loam.
0-7 Loam
7-601SI.1t loam, loam
SM
SM
SM
ML,
CL -ML
CL
CL -ML, CL
CI. -ML, CL
CL
CL -ML
CL -ML
A-2, A-4 0
A-2, A -II; 0
A-2 0
A -'I n
A-6, A-71 0
A-4, A-61 n
A-4, A-61
A-6
A-4
A-4
1110
ton
100
100
100
100
90-I00:c0-90
90-100;60-90
90-100;50-85
95-100;85-100
too 195-100
95-100;85-100
O Inn 100 ;90 -inn
O 100 100 190_100
i
n inn 100 ;90 -Inn
O 1on ion 190 -inn
See map unit description for the composition and behavior of the map unit.
10-45
30-45
15-30
60-85
85-95
60-85
70-90
70-95
85-100
85-100
NP
NP
NP
20-30 NP -10
35-50 15-3n
20-35 5-15
25-35 5-15
25-35 10-20
25-30 5-10
25-30 5-10
952232
61' 4
/or
sh
Index to soil map units
rage
l—Altvan loam, (1 to 1 percent slopes 7
2— Altvan loam, I to 3 percent slopes 8
:1—Aquolls and Aquents, gravelly substratum 8
.I--Aquolls and Aquepts, flooded H
:1 --Ascalon sandy loam, 1 to 3 percent slopes 9
4 --Ascalon sandy loam, 3 to 5 percent slopes 9
7 --Ascalon sandy loam, 5 to 9 percent slopes 10
8 —Ascalon loam, 0 to 1 percent slopes 11
9 —Ascalon loam, 1 to 3 percent slopes 11
10—Dankard sandy loam, 11 to 3 percent. slopes _:12
I I --Dresser sandy loam, 11 to 1 percent slopes I::
12— Dresser sandy loam, 1 to :3 percent slopes 13
I:3--Cascajo gravelly sandy loam, 5 to 20 percent
slopes 13
14 --Colby loam, 0 to I percent slopes 13
I5 --Colby loam, I to 3 percent slopes 11
16 —Colby loam, 3 to 5 percent slopes 14
17 --Colby loam, S to 9 percent slopes 15
I8—Colby-Adena loans, 3 to 9 percent slopes 16
19 —Colombo day loam, (1 to I percent slopes 16
20 —Colombo clay loam, 1 to 3 percent slopes 16
11— Dacono clay loam, 0 to I percent slopes 17
'—Dacono clay loam, I to 3 percent slopes 18
'.:3 --Fort Collin, loam, 0 to I percent slopes 18
24 —Fort Collins loam, 1 to 3 percent slopes 19
25—Haverson loam, (1 to I percent slopes 19
IG—Haverson loam, I to 3 percent slopes 20
27--Heldt silty clay, I to 3 percent slopes 20
.1t—Helelt silty clay, 3 to 5 percent slopes 21
'9—Julesburg sandy loam, 0 to I percent slopes 21
1e—Julesburg sandy loam, 1 to :3 percent slopes 22
:31 —Kim loam, 0 to I percent slopes 22
32 —Kim loam, 1 to 3 percent slopes 23
:13 --Kim loam, :3 to 5 percent slopes 23
:31 --Kim loam, 5 to 9 percent slopes 24
:'5-- Loup-Doel loamy sands, 0 to 3 percent slopes 25
3f —Midway -Shingle complex, 5 to 20 percent slopes 25
:17 --Nelson fine sandy loam, 0 to 3 percent slopes 26
35 - Nelson fine sandy loam, 3 to 9 percent slopes 20
a9 —Nunn loam, 0 to 1 percent slopes 21
10-- Nunn loam, I to 3 percent slopes 28
4I -. Nunn clay loam, 0 to 1 percent slopes 28
Page
1:' Nnnn clay loam, 1 to :3 percent slopes 29
.1.4 N unu lo,nn said. (I to 1 percent slopes 29
-ft I llney Lune Nand, I to 3 percent slopes 30
45 4 Ilucy Leung sand, :3 in 5 percent slopes 31
4f I )Iney fine sandy loam,, 0 In 1 percent slopes 31
-17 (Hwy fo n- *ai.I loam, I to :3 percent slopes 32
48 Ohn•y llm• s:ude loam. a to 5 percent slopes 32
49—Usgoud sand, 0 to :t percent slopes 33
50 —Otero sandy loan., 0 to I percent slopes 34
51 --Otero sandy loam, 1 to :3 percent slopes 34
52 -Otero sandy loam, :I to S percent slopes -35
ha (Item sandy loam,,h In 9 percent slopes 35
54 Paoli loam, 0 to 1 percent slopes 36
55 I'aoli lo:un, I to 3 percent. slopes 37
5(i Itenuhill clay loam, 0 to :3 percent slopes 37
III Itenolill clay loam, :3 to 9 percent slopes 38
IM_Shingle loam, I to :3 percent slopes 38
59-- Shingle loam, 3 to 9 percent slopes 39
G0—Shingle-Renohill complex, :3 to 9 percent slopes 39
GI —'Passel fine sandy loam, 5 to 20 percent slopes40
62 —Terry fine sandy loam, 11 to 3 percent slopes 40
f3 —Terry fine sandy loam, 3 to 9 percent slopes 41
(i4—'1'hedalund loam, 1 to :3 percent slopes 41
05—Thedalund loam, 3 to 9 percent slopes 42
6G -111m clay loam, (1 to 3 percent slopes 43
67 —Ulm clay loam, 3 to 5 percent slopes 43
(i8—Ustic Torriorthents, moderately steep 44
69—Valent sand 0 to 3 percent slopes 44
70—Valent sand, 3 to 9 percent slopes
71—V dent -Loup comtilex, 0 to 9 percent slopes,..
72 —Vona loamy sand, 0 to 3 percent slopes 46
73— Vona loamy sand, :3 to 5 percent slopes 47
74 —Vona loamy sand, 5 to 9 percent slopes 47
75 —Vona sandy loam, 0 to 1 percent slopes 48
76 —Vona sandy loam, 1 to 3 percent slopes 48
77 —Vona sandy loam, :i to 5 percent slopes 49
78 - Weld loam, 0 to 1 percent slopes 49
'1n Weld loam, I to :3 percent slopes 50
80 --Weld loam, :3 to 5 percent slopes 50
HI--Wiley-Colby complex, 0 to 1 percent slopes 51
H2 - Wiley -Colby complex, I to 3 percent slopes 52
WI - Wiley -Colby complex, 3 to 5 percent elope,' 52
45
4j
1
952232
1
r
f
41 ---Olney loamy sand, 1 to 3 perm( '-apes. This is a
drop, well drained soil on smooth plains( elevations of
.1,600 to 5,200 feet. It formed in mixed outwaash deposits.
Included in mapping are some small leveled areas.
Typically the surface layer is grayish brown loamy sand
about 9 inches thick. The subsoil is yellowish brown and
very pale hrown sandy clay loam about 15 inches thick.
The substratum to a depth of fill inches is very pale
brown, calcareous fine sandy loam.
Permeability and available water ra pacily art.
moderate. The effective rooting depth is Yu inches or
more. Surface runoff is slow, and the erosion hazard is
low.
In irrigated areas this soil is suited to the crops com-
monly grown in the area. Perennial grasses and alfalfa or
close grown crops should be grown at least Si) percent of
he time. Contour ditches and corrugations -can be lined in
irrigating crops and pasture. Furrows, contour furrows,
and c-ru slope furrows are suitable for row crops. Sprin
Icier irrigation is also desirable. Keeping tillage to a
minimum and utilizing crop residue help to control ero-
sion. Maintaining fertility is important. Crops respond to
applications of phosphorus and nitrogen.
In nonirrigated areas.lhis soil is suited to winter wheal.,
bark, and sorghum. Most of the the acreage is planted
to winter wheat. The predicted average yield is 211
bushels per acre. The soil is usually summer ('allowed in
alternate years to allow moisture accumulation. Generally
precipitation is too low for beneficial use of fertilizer.
Stubble mulch farming, striperopping, and minimum til-
lage are needed to control soil blowing and water erosion.
Terracing also may be needed to control water erosion.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grams. Need leaneithread, switchgrass, sideoats grams,
and western wheatgraass are also prominent. Potential
production ranges from 2,2011 pounds per acre in favora-
ble years to I,Nno pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switch grass decrease and blue grama, sand drnpseed,
:rxl sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should he based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, switchgrass, sideoats
grama, blue grama. pubescent wheatgrass, and en'sted
wheaugraass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. It can
be seeded into n clean, firm sorghum stubble, or it ram he
Milled Min n firm prepnrwl seedbed. Seeding early in
spring has proven most successful.
Windbreaks and environmental plantings are generally
suited Lo this soil. Soil blowing, the principal hazard in
esl nhlishing trees -and shrubs, can be roil rolled by cul-
t ivol lnl• only in the !rip row and by leaving a strip of
c eta •l atiun het wean the rows, Supplemental irrigat
;nay be needed al the time of planting and during dry
periods. 'frees that are best suited and have good survival
:re Rocky Mountain juniper, eastern redeedar, ponderosa
pine, Siberian elm, Russian -olive, anti haac•kberry. The
shnibs hest suite( are sk unkbush sumac, lilac, and Siberi-
an peashrub.
Wildlife is an imp i' secondary use of this soil. The
cropland areas provide'- mrable habitat for ring-necked
pheasant anti mourning dove. Many nongame species can
be attracted by establishing areas for nesting and escape
cover. For pheasants, undisturbed nesting cover is essen-
tial and should be included in plans for habitat develop-
ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can be
attracted by developing livestock watering facilities,
managing livestock grazing and reseeding where needed.
This soil has good potential for urban development. The
'ally limiting feature is the moderately rapid permeability
in the substratum, which causes a hazard of ground water
contamination from sewage lagoons. The loamy sand sur-
face layer is a limitation for recreational development.
Gum established, the lawns, shrubs, and trees grow well.
Capability subclass lily irrigated, I Ve uunirrigaated;
Sandy Plains range site.
711 --Valent sand, 3 to 9 percent slopes. This is a deep,
excessively drained soil un plains at elevations of 4,651) to
5,ln0 feet. It formed in eolian deposits. Included in
mapping are small areas of soils that have lime within a
drill, of 40 inches. Also included are small areas of soils
I had have sandstone between 41) and tit) inches.
'I'ypically the surface layer of the Valent soil is brown
sand about Ii inches thick. The underlying material to a
depth of 60 inches is brown sand.
Permeability is rapid. Available water capacity is
moderate. The effective rooting depth is lit) inches or
more. Surface runoff is slow, and the erosion hazard is
low.
The potential vegetation is dominated by sand
bluestem, sand reedgrass, switchgrass, sideoats grama,
needleandthread, little bluestem, and blue grama. Poten-
tial production ranges from 2,500 pounds per acre in
favorable years to 1,8011 pounds in unfavorable years. As
range condition deteriorates, the sand bluestem,
switchgrass, sand reedgrass, sideoats grama, and little
bluestem decrease, forage production drops, and sand
sage increases. Undesirable weeds and annuals invade
and "blowout" conditions can occur as range condition
becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, indiangrass, switchgrass,
side -oats grama, little bluestem, and blue grama are suita-
ble for seething. Because this soil is susceptible to soil
blowing, it should be seeded using an interseeder or the
',,red should be drilled into a firm, clean sorghum stubble.
I ieciliug early in spring has proven most successful. Brush
nurrage•ment can also help in improving deteriorated
range.
Windbreaks and environmental plantings are generally
not suited to this soil. Onsite investigation is needed to
determine if plantings are feasible.
Wildlife is an important secondary use of this soil. Ran-
geland wildlife, for example, the pronghorn antelope, can
be attracted by developing livestock watering facilities,
managing livestock Amazing, and reseeding where needed.
This soil has fair potential for urban development. The
chief limiting soil features are -the rapid permeability and
the susceptibility to soil blowing. Septic tank absorption
fields function properly, but in places the sandy sub-
stratum does not properly filter the leachate. Sewage
lagoons must be sealed. Once. established, lawns, shrubs,
and trees grow well. Capability subclass Vie irrigated,
V le nonirrigated; Deep Sand range site.
952232
I
I
I
I
I
I
I
I
72 —Vona loamy sand, I) to 3 percen' -lopes. This is a
•deep, somewhat excessively drained.: on plains and
high terraces at elevations of 4,( to 5,200 feet. IL
formed in collar' or alluvial deposits. Included in mapping
are some leveled areas. Also included are small areas of
soils that have a loamy substratum and some areas of
soils that are noncalcareous to a depth of 60 inches.
Typically the surface layer of this Vona soil is grayish
brown. The upper li inches is loamy sand and the lower 6
inches is fine sandy loam. The subsoil is brown and light
ellnwish brown fine sandy loam about Ili inches thick.
[he substratum to a depth of 0o inches is sandy loam.
I'ermyabilil,v is moderately rapid. Available water
•apacily is moderate. The effective rooting depth is tin
inches or more. Surface runoff is slow, and the erosion
hazard is low.
In irrigated this soil is suited to the crops con
manly grown in the area. Perennial l grasses and alfalfa or
,lose grown crops should be grown aL least 511 percent of
the time. Contour ditches :nd corrugations can be used in
irrigating close grown erops and pasture. h'urruwr, eon
I11111' furrows, and cross slope furrows are suitable for rot%
crops. Sprink ter irrigation is also desirable. Keeping Lit
lag'. to a minimum and utilizing crop residue help to con
Ind erosion. Maintaining fertility is important. Crop:-
respond In applications of phosphorus and nitrugon.
In nonirrigated areas this soil is suited to winter wheat.
1i:itley, and sorghum. Most of the acreage is planted in
winter wheal_ The predicted average yield is 20 bushels
per acre. The soil is summer fallowed in alternate years
to allow moisture accumulation. Generally precipitation is
lion low for be,slicia l use of fertilizer.
Stubble mulch farming, striperopping, and minimum til-
lage are needed to control soil blowing and water erosion.
Terracing also may be needed to control water erosion.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grains. Need lcandihread, switchgrass, sideoats gram:..
and western wheatgrass are also prominent. Potential
production ranges from 2,200 pounds per acre in favors
lily years to 1,800 pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switchgrass decrease and blue grama, sand dropseed.
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should be based
on taking hall and leaving half of the total annual protluc
timl. Seeding is desirable if the range is in poor condition.
:;anon bluestem, sand reedgrass, sw ltchgrass, sidenats
wash,. i,,,, bbs' gr: mum, iuiieseer,t wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. I1
should he drilled into a clean, firm sorghum stubble or a
pi (-pared seedbed. Seeding early in spring has proven
moot poem a l -u 1.
Windbreaks and environmental plantings are fairly well
suited Lu this soil. Blowing sand and low available water
capacity :arc• the principal hazards in establishing trees
s
and shrubs. The soil is so loose that trees should be
planted in -shallow furrows and vegetation maintained
between the rows. Supplemental irrigation is necletl to
insure survival. Trees that are best suited and have good
survival are Rocky Mountain juniper, eastern redtedar.
ponderosa pine, and Siberian elm. The shrubs best suited
art, skin kbush sumac, lilac, and Siberian peach nab.
Wildlife is an important secondary use of this soil. The
cropland areas provide favorable habitat for ring-necked
pheasant and mourning dove. Many nongame species can
he attracted by [dishing areas for nesting and escape
011'0% For p •,s. .s, undisturbed nesting cover is essen-
tial and she be included in plans for habitat develop
meat, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can be
attracted by developing livestock watering facilities,
managing livestock grazing, and reseeding where needed.
This soil has good potential fur urban and recreational
development. Once established, the lawns, shrubs, and
trees grow well. The chief limiting soil feature is the
rapid permeability in the substratum, which causes a
hazard ul' ground water contamination ('tutu sewage
lagoons. In places recreational development is limited by
the susceptibility to soil blowing. Capability subclass Illy
irrigated, IVe nonirrigated; Sandy Plains range site.
73 —Vona loamy sand, 3 to 5 perrenl slopes. This is a
deep, somewhat excessively drained :aeon ,m plain:, and
high terraces ut elevations of •1,6110 I.,, 6,31111 IreI II
formed in rnli:n or alluvial deposits. Included in mapping
are some leveled areas. Also included are small areas of
soils that have a loamy substratum and some areas of
soils that are noncaleareous In a 111111 11 oI' 110 inclo.a
Typically the surface layer of this Vona soil is grayish
Mown. The upper 6 inches is loamy sand anti the lower 5
itches is fine sandy loam. The subsoil is brown and light
yellowish brown fine sandy loam about 14 inches thick.
The substratum to a depth of 60 inches is sandy loam.
Permeability is moderately rapid. Available water
capacity is moderate. The effective rooting depth is 64)
inches or more. Surface runoff is slow, and the erosion
hazard is low.
This soil is suited to limited cropping. Intensive
cropping is hazardous because of soil blowing. The
cropping system should be limited to such close grown
crops as alfalfa, wheat, and barley. The soil is also suited
to irrigated pasture. A suitable cropping system is 3 to 4
years of alfalfa followed by 2 years of corn and small
grain and alfalfa seeded with a nurse crop.
Closely spaced contour ditches or sprinklers can be
used in irrigating close grown crops. Contour furrows or
spinklers should be used for new crops. Application of
barnyard manure and commercial fertilizer helps to main-
tain good production.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grama. Needleandthread, switchgrass, sideoats grama,
and western wheatgrass :are also prominent. Potential
production ranges from 2,200 pounds per acre in favora-
ble years to 1,.`400 pounds in unfavorable .years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switchgrass decrease and blue grama, sand dropseed,
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should he based
on taking half and leaving half of the total annual profs
Lion. Seeding is desirable if Lhe range is in poor condition.
Sand bluestern, sand reedgrass, switchgrass, sideoats
grama, blue grama, pubescent wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. It can
be seeded into a clean, firm sorghum stubble, or it can be
drilled into a film prepared seedbed. Seeding early in
spring has proven most. successful.
952232
Windbreaks and environmental pl:r. Cs are fairly well
suited to this soil. Blowing sand and linJavailable water
capacity are the principal hazards in establishing trees
and shrubs. The soil is so loose that trees should be
planted in shallow furrows and vegetation maintained
between the rows. Supplemental irrigation may be needed
to insure survival. Trees that are best suited and have
good survival are Rocky Mountain juniper, western
redredar, ponderosa pine, and Siberian elm. The shrubs
best suited are skunkbush sumac, lilac, and Siberian
peashrub.
Wildlife is an important secondary use of this soil. The
cropland areas provide favorable habitat for ring-necked
pheasant and mourning dove. Many nonganmr species can
b, el traded by establishing areas for nesting and escape
no re I" nr pheasants, undisturbed nesting rover is essen-
Ii d .roil should be included in plugs for habitat develop-
nnod., especially in areas of intensive agriculture. Range -
hoot wildlife, for example, the pronghorn antelope, ran be
attracted by developing livestock watering rarihtreo,
managing livestock grazing, and reseeding where needed.
This soil has good potential for urban and recreational
development. Once established, the lawns, shrubs, and
trees grow well. The primary limiting nail fi•nlure in the
rapid permeability in the substratum, which valises a
hazard of ground water contamination l'rorn sewage
lagoons. In places recreational development is limited by
the susceptibility to soil blowing. Capability subclass We
irrigated, Vie nonirriga ted; Sandy Plains range site.
74 - Vona I.mmY nand, 5 to 9 percent slopes. This is a
deep, somewhat excessively drained soil on plains at
elevations of 4,61111 to 6,260 -feet. It formed in eolian
deposits. Included in mapping are small areas of soils that
have a loamy substratum and areas of soils that are non -
calcareous to a depth of (i0 inches.
Typically the surface layer is grayish brown. The upper
6 inches is loamy sand and the lower 4 inches is fine
sandy loam. The subsoil is brown and light yellowish
brown fine sandy loam about 12 inches thick. The sub-
stratum to a depth of Ell inches is loamy sand.
Permeability • is moderately rapid. Available water
capacity is moderate. The effective rooting depth is 611
inches or more. Surface runoff is medium, and the erosion
hazard is low.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grama. Need lean ith read, swite hgrass, sideoat-s grams,
and western wheatgrass are also prominent. Potential
production ranges from 2,200 pounds per acre in favora-
ble years to 1,800 pounds in unfavorable years. As range
onel1l non deleriorates, the sand bluestem, sand reedgrass,
:and Sw itrhgrass decrease and blue grams, sand dropseed,
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should 1w based
on taking half and leaving half of the total :nnual produc-
tion. Seeding is desirable if the range is in poor email' ion
Sand bluestem, sand reedgrass, switehgrass, sideuats
gratna, blue grama, pubescent wile:dyrn-s, and crested
wheatgrass are suitable for seeding. The grails ',Pled ed
should meet the seasonal requirements of livestock. II caul
he seeded into a clean, firm sorghum stubble, or ifran be
drilled into a firm prepared seedbed. Seeding early in
spring has proven most successful.
Windbreaks an vironmental plantings are fairly well,
suited to this soilticlkwing sand and low available water
capacity are the principal hazards in establishing trees
and shrubs. 'Phis soil is so loose that trees should hen
planted in shallow furrows and -vegetation maintained)
between the rows. Supplemental irrigation may be needed
to insure survival. Trees thin are best suited amt, have
good Survival are Rocky Mountain juniper, eastern
redcedar, ponderosa pine, aril Siberian elm. The sh nibs
best suited are skunkbush sumac, lilac, and Siberian
peashrub.
Wildlife is an important secondary use of this soil. Ran-
geland wildlife, for example, the pronghorn antelope, can
be attracted by developing livestock watering facilities,,
managing livestock grazing, and reseeding where needed.
'Phis soil has good potential for urban and recreational
development. Once established, the lawns, shrubs, and
trees arrow welt The primary limiting soil feature is the
rapid permeability in the substratum, which causes a
hazard of ground water contamination from sewage
lagoons. In places recreational development is limited by
t he susceptibility to soil blowing- Capability subclass V le
Irrigated, Vle nonirrigated; Sandy I'lains range site.
952232•
I
30 SOIL SURVEY
Permeability is moderately slow. Available water
capacity is high. The effective rooting depth is 60 inches
or more. Surface runoff is slow, and the erosion hazard is
low.
In irrigated areas this soil is suited to the crops com-
monly grown in the area. Perennial grasses and alfalfa or
close grown crops should be grown at least 50 percent of
the time. Contour ditches and corrugations can be used in
irrigating close grown crops and pasture. Furrows, con-
tour furrows, and cross slope furrows are suitable for row
crops. Sprinkler irrigation is also desirable. Keeping til-
lage to a minimum and utilizing crop residue help to con-
trol erosion. Maintaining fertility is important. Crops
respond to applications of phosphorus and nitrogen.
In nonirrigated areas this soil is suited to winter wheat,
barley, and sorghum. Most of the acreage is planted to
winter wheat. The predicted average yield is 28 bushels
per acre. The soil is summer fallowed in alternate years
to allow moisture accumulation. Generally precipitation is
too low for beneficial use of fertilizer.
Stubble mulch farming, striperopping, and minimum til-
lage are needed to control soil blowing.
Windbreaks and environmental plantings are generally
suited to this soil. Soil blowing, the principal hazard in
establishing trees and shrubs, can be controlled by cul-
tivating only in the tree row and by leaving a strip of
vegetation between the rows. Supplemental irrigation
may be needed at the time of planting and during dry
periods. Trees that are best suited and have good survival
are Rocky Mountain juniper, eastern redcedar, ponderosa
pine, Siberian elm, Russian -olive, and hackberry. The
shrubs best suited are skunkbush sumac, lilac, and Siberi-
an peashrub.
Wildlife is an important secondary use of this soil.
Ring-necked pheasant, mourning dove, and many non -
game species can be attracted by establishing areas for
nesting and escape cover. For pheasants, undisturbed
nesting cover is essential and should be included in plans
for habitat development, especially in areas of intensive
agriculture.
Few areas of this Nunn soil are in major growth and
urbanized centers. The sandy surface layer, the moderate
shrink -swell potential in the subsoil, and the hazard of
rare flooding along Box Elder Creek are the chief limit-
ing features for development. Capability subclass IIIe ir-
rigated, IVe nonirrigated.
44 —Olney loamy sand, 1 to 3 percent slopes. This is a
deep, well drained soil on smooth plains at elevations of
4,600 to 5,200 feet. It formed in mixed outwash deposits.
Included in mapping are some small leveled areas.
Typically the surface layer is grayish brown loamy sand
about 9 inches thick. The subsoil is yellowish brown and
very pale brown sandy clay loam about 15 inches thick.
The substratum to a depth of 60 inches is very pale
brown, calcareous fine sandy loam.
Permeability and available water capacity are
moderate. The effective rooting depth is 60 inches or
more. Surface runoff is slow, and the erosion hazard is
low.
In irrigated areas this soil is suited to the crops com-
monly grown in the area. Perennial grasses and alfalfa or
close grown crops should be grown at least 50 percent of
the time. Contour ditches and corrugations can be used in
irrigating crops and pasture. Furrows, contour furrows,
and cross slope furrows are suitable for row crops. Sprin-
kler irrigation is also desirable. Keeping tillage to a
minimum and utilizing crop residue help to control ero-
sion. Maintaining fertility is important. Crops respond to
applications of phosphorus and nitrogen.
In nonirrigated areas this soil is suited to winter wheat,
barley, and sorghum. Most of the the acreage is planted
to winter wheat. The predicted average yield is 20
bushels per acre. The soil is usually summer fallowed in
alternate years to allow moisture accumulation. Generally
precipitation is too low for beneficial use of fertilizer.
Stubble mulch farming, striperopping, and minimum til-
lage are needed to control soil blowing and water erosion.
Terracing also may be needed to control water erosion.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grama. Needleandthread, switchgrass, sideoats grama,
and western wheatgrass are also prominent. Potential
production ranges from 2,200 pounds per acre in favora-
ble years to 1,800 pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switchgrass decrease and blue grama, sand dropseed,
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, switchgrass, sideoats
grama, blue grama, pubescent wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. It can
be seeded into a clean, firm sorghum stubble, or it can be
drilled into a firm prepared seedbed. Seeding early in
spring has proven most successful.
Windbreaks and environmental plantings are generally
suited to this soil. Soil blowing, the principal hazard in
establishing trees and shrubs, can be controlled by cul-
tivating only in the tree row and by leaving a strip of
vegetation between the rows. Supplemental irrigation
may be needed at the time of planting and during dry
periods. Trees that are best suited and have good survival
are Rocky Mountain juniper, eastern redcedar, ponderosa
pine, Siberian elm, Russian -olive, and hackberry. The
shrubs best suited are skunkbush sumac, lilac, and Siberi-
an peashrub.
Wildlife is an important secondary use of this soil. The
cropland areas provide favorable habitat for ring-necked
pheasant and mourning dove. Many nongame species can
be attracted by establishing areas for nesting and escape
cover. For pheasants, undisturbed nesting cover is essen-
tial and should be included in plans for habitat develop-
ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can he
952232
COUNTY, COLORADO, SOUTHERN PART 31
attracted by developing livestock watering facilities,
managing livestock grazing and reseeding where needed.
This soil has good potential for urban development. The
only limiting feature is the moderately rapid permeability
in the substratum, which causes a hazard of ground water
contamination from sewage lagoons. The loamy sand sur-
face layer is a limitation for recreational development.
Once established, the lawns, shrubs, and trees grow well.
Capability subclass IIIe irrigated, IVe nonirrigated;
Sandy Plains range site.
45 —Olney loamy sand, 3 to 5 percent slopes. This is a
deep, well drained soil on plains at elevations of 4,600 to
5,200 feet. It formed in mixed outwash deposits. Included
in mapping are small areas of soils that have sandstone
and shale within a depth of 60 inches and some small
leveled areas.
Typically the surface layer of this Olney soil is grayish
brown loamy sand about 7 inches thick. The subsoil is yel-
lowish brown and very pale brown sandy clay loam about
14 inches thick. The substratum to a depth of 60 inches is
very pale brown, calcareous fine sandy loam.
Permeability and available water capacity are
moderate. The effective rooting depth is 60 inches or
more. Surface runoff is slow, and the erosion hazard if
low.
In irrigated areas this soil is suited to the crops com-
monly grown in the area. Perennial grasses and alfalfa or
close grown crops should be grown at least 50 percent of
the time. Close grown crops and pasture can be irrigated
with contour ditches and corrugations. Furrows, contour
furrows, and cross slope furrows are suitable for row
crops. Sprinkler irrigation is also desirable. Keeping til-
lage to a minimum and utilizing crop residue help to con-
trol erosion. Maintaining fertility and organic matter con-
tent is important. Crops respond to barnyard manure and
commercial fertilizer.
The potential native vegetation on this range site is
dominated by sand bluestem. sand reedgrass, and blue
grama. Needleandthread, switchgrass, sideoats grama,
and western wheatgrass are also prominent. Potential
production ranges from 2,200 pounds per acre in favora-
ble years to 1,800 pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switchgrass decrease and blue grama, sand dropseed,
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, switchgrass, sideoats
grama, blue grama, pubescent wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. It can
be seeded into clean, firm sorghum stubble, or it can be
drilled into a firm prepared seedbed. Seeding early in
spring has proven most successful.
Windbreaks and environmental plantings are generally
suited to this soil. Soil blowing, the principal hazard in
establishing trees and shrubs, can be controlled by cul-
tivating only in the tree row and by leaving a strip of
vegetation between the rows. Supplemental irrigation
may be needed at the time of planting and during dry
periods. Trees that are best suited and have good survival
are Rocky Mountain juniper, eastern redcedar, ponderosa
pine, Siberian elm, Russian -olive, and hackberry. The
shrubs best suited are skunkbush sumac, lilac, and Siberi-
an peashrub.
Wildlife is an important secondary use of this soil. The
cropland areas provide favorable habitat for ring-necked
pheasant and mourning dove. Many nongame species can
be attracted by establishing areas for nesting and escape
cover. For pheasants, undisturbed nesting cover is essen-
tial and should be included in plans for habitat develop-
ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can be
attracted by developing livestock watering facilities,
managing livestock grazing, and reseeding where needed.
This soil has good potential for urban development. The
only limiting feature is the moderately rapid permeability
in the substratum, which causes a hazard of ground water
contamination from sewage lagoons. The loamy sand sur-
face layer is a limitation for recreational development.
Once established, the lawns, shrubs, and trees grow well.
Capability subclass IIIe irrigated, VI nonirrigated; Sandy
Plains range site.
46 —Olney fine sandy loam, 0 to 1 percent slopes.
This is a deep, well drained soil on smooth plains at eleva-
tions of 4,600 to 5,200 feet. It formed in mixed outwash
deposits. Included in mapping are small areas of soils that
have a dark surface layer and some small leveled areas.
Typically the surface layer of this Olney soil is grayish
brown fine sandy loam about 10 inches thick. The subsoil
is yellowish brown and very pale brown sandy clay loam
about 15 inches thick. The substratum to a depth of 60
inches is very pale brown, calcareous fine sandy loam.
Permeability and available water capacity are
moderate. The effective rooting depth is 60 inches or
more. Surface runoff is slow, and the erosion hazard is
low.
This soil is used almost entirely for irrigated crops. It
is suited to all crops commonly grown in the area, includ-
ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
and onions. An example of a suitable cropping system is 3
to 4 years of alfalfa followed by corn, corn for silage,
sugar beets, small grain, or beans. Few conservation prac-
tices are needed to maintain top yields.
All methods of irrigation are suitable, but furrow ir-
rigation is the most common. Barnyard manure and com-
mercial fertilizer are needed for top yields.
Windbreaks and environmental plantings are generally
suited to this soil. Soil blowing, the principal hazard in
establishing trees and shrubs, can be controlled by cul-
tivating only in the tree row and by leaving a strip of
vegetation between the rows. Supplemental irrigation
may be needed at the time of planting and during dry
periods. Trees that are best suited and have good survival
952232
70—Valent sand, 3 to 9 percent slopes. This is a deep,
excessively drained soil on plains at elevations of 4,650 to
5,100 feet. It formed in eolian deposits. Included in
mapping are small areas of soils that have lime within a
depth of 40 inches. Also included are small areas of soils
that have sandstone between 40 and 60 inches.
Typically the surface layer of the Valent soil is brown
sand about 6 inches thick. The underlying material to a
depth of 60 inches is brown sand.
Permeability is rapid. Available water capacity is
moderate. The effective rooting depth is 60 inches or
more. Surface runoff is slow, and the erosion hazard is
low.
The potential vegetation is dominated by sand
bluestem, sand reedgrass, switchgrass, sideoats grama,
needleandthread, little bluestem, and blue grams. Poten-
tial production ranges from 2,500 pounds per acre in
favorable years to 1,800 pounds in unfavorable years. As
range condition deteriorates, the sand bluestem,
switchgrass, sand reedgrass, sideoats grama, and little
bluestem decrease, forage production drops, and sand
sage increases. Undesirable weeds and annuals invade
and "blowout" conditions can occur as range condition
becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, indiangrass, switchgrass,
side -oats grama, little bluestem, and blue grama are suita-
ble for seeding. Because this soil is susceptible to soil
blowing, it should be seeded using an interseeder or the
seed should be drilled into a firm, clean sorghum stubble.
Seeding early in spring has proven most successful. Brush
management can also help in improving deteriorated
range.
Windbreaks and environmental plantings are generally
not suited to this soil. Onsite investigation is needed to
determine if plantings are feasible.
Wildlife is an important secondary use of this soil. Ran-
geland wildlife, for example, the pronghorn antelope, can
be attracted by developing livestock watering facilities,
managing livestock grazing, and reseeding where needed.
This soil has fair potential for urban development. The
chief limiting soil features are the rapid permeability and
the susceptibility to soil blowing. Septic tank absorption
fields function properly, but in places the sandy sub-
stratum does not properly filter the leachate. Sewage
lagoons must be sealed. Once established, lawns, shrubs,
and trees grow well. Capability subclass Vie irrigated,
VIe nonirrigated; Deep Sand range site.
952232
TABLE 2. --ENGINEERING PROPERTIES AND CLASSIFICATIONS.
Soli same and
map symbol
Olney
69, 70
Valent
12. 73. 74
Vona
Depth;
In 1
USDA texture
0-10 Loamy sand
10-20 Sandy clay loam
20-25 Sandy loam,
sandy clay
loam, fine
sandy loam.
25-60 Fine sandy loam,
loamy fine
sand.
0-8
8-60
0-6
6-28
28-60
Classification
Unified AASHTO
SM
SC, CL
SC,
SM-SC,
CL,
CL -ML
SM
Fine sans %5M
Fine sand, sand :SP-Sm. SY
Loamy sand ;SM
Fine sandy loan,: SM
sandy loam.
Sandy loam, ISM
loamy sand.
A-2
A-6
A -A, A-6
A-2
rrag-
menta
>
inches
-2
A-2. A-3:
A-2
A-2, A-4
A-2
Pet
0
0
0
0
0
0
0
0
0
95-100'90-100 60-90 115-25
95 -too 90-100 8o-100:60-55
95-100 95-100 T5-95 ;35-55
95-10o:95-100
100 : 100
1 100 :95-100
100 90-100
100 90-100
100
90-100
70-95
80-95
75-90
60-90
60-90
50-85
20-35
10-30
5-20
15-30
35_45
15-30
Percentage passing : l"
sieve number-- 'Liquid l Plaae
limit 1 ticity
4 1 10 40 1 200 1 1 lode'
Pat I
NP
20 -AO 10-20
20-35 5-5
NP
NF
NP
NP
NF
NF
J
TABLE j. --PHYSICAL AND CHEMI:AL PROPER: ES OF $01L
Soil name and
ma; aymtol
44,
. 45
_
Olney
69, 70
Valent
72, 13, 74
Vona
Depth
In
0-10
110-20
:20-25
:25-60
Pertea-
bil ty
Inter
6.0-23
0.6-2.0
0.6-6.0
2.0-6.0
0-8 : 6.0-20
8-60; 6.0-20
0-5 6.0-21
6-228: 2.0-5.0
28-60: 6.0-2.
Avail atle
water
cacao ity
In/in
0.06-7.10
0.13-3.15
0.11-0.15
0.05-7.13
0.07-0.12
0.05-0.10
0.09-0.11
0.12-0.14
0.03-3.11
Soil
reaction
.6-7.8
6.6-7.9
7.9-4.4
7.9-9.a
6.6-7.3
6.6-7.8
6.6-7.3
6.6-8.0
7.4-8.4
Salinity
Mrnos/cm
<2
<2
<2
<2
Shrink -
swell
potential
•
Low
Moderate
Low
Low
;Low
<2 Row
;Low
<4 ;Low
<A ;Low
Risk or corrosion Eroslon{w:nc
ractorslero::
Uncoated ;Concrete I poi::cy
steel K T ;grout
Low
High
High
High
rLow
Low
Low
High
Nigh
Low
Low
Low
Low
Low
Low
;Low
;Low
:Low
•
0.171 5
0.2u:
1.2u:
0.20:
1).107
10.101
0.10: 5
0.10:
0.10:
Source: Crab, 19E0, Soil Survey of Weld County, Colorado,
So tnern Part, USDA Soil Conservation Service
Table 12 and 13
952232
2
2
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