HomeMy WebLinkAbout20010413.tiff EXHIBIT I
SOILS INFORMATION
The following soils information was gathered from the Soil Survey of Weld County Area,
_ Southern Part Colorado, August 1982, United States Department of Agriculture, Soil
Conservation Service, Colorado.
Exhibit I-1 identifies soils within the Riverbend site and Exhibit I-2 provides a description of
each soil within the property.
2001-0413
EXHIBIT
LA311011 1-I
. 1.3 T 10
Slat ' 10
I 7 '
T 1 N
fi
3 m R
■ 13, as R 66 W
10 ' S - } ' :
r
10 , } ,1,
tt
■ t
1 l�
' .' v .
3A ,,-4,4-41
J !
f
1a _ 'nL 21
E W 0 - 21
I 55
fw■c■4 ‘ fl 3
1
SOURCE OF INFORMATION:
2 U.S. DEPARTMENT OF AGRICULTURE,
SOIL CONSERVATION SERVICE, WELD
COUNTY, COLORADO, SOUTHERN PART,
1980.
1000 500 0 1000
i
SCALE IN FEET
SOILS MAP
Jobre No: 69/9I
9-136 MOBILE PREMIX CONCRETE, INC.,A SUBSIDIARY - TuttleApplegate,lnc.
Orv.n: TGS 1 = Cme.lr.Or L.E.tan dwm
Oe.19.: OF LAFARGE,CORP. -t = 139soar9...-SSE 304
Checked: OF Deny,Co.sass
File. sGhs.mre RIVERBEND OPERATION Batt te"n "`�°' "'
Z d en:kw.4n.ew•+ wk•
Scole:1' - 100. ' t/-
10—Bankard sandy loam, 0 to 3 percent slopes. This
3—Aquolls and Aquents, gravelly substratum. This is a deep, somewhat excessively drained soil on flood
nearly level map unit is on bottom lands and flood plains plains at elevations of 4,450 to 5,000 feet. It formed in
-' all the major streams in the survey area. Aquolls, stratified recent alluvium along streams and rivers. In-
ich have a dark colored surface layer, make up about eluded in mapping are numerous sand and gravel bars
—60 percent of the unit. Aquents, which have a lighter and small areas of noncalcareous soils.
colored surface layer, make up about 35 percent. About 5 Typically the surface layer of this Bankard soil is
percent is Aquepts and Bankard sandy loam. brown sandy loam about 4 inches thick. The underlying
These are deep, poorly drained soils that formed in material to a depth of 60 inches is pale brown calcareous
recent alluvium. No one pedon is typical. Commonly the sand stratified with thin lenses of sandy loam, loam, and
soils have a mottled, mildly alkaline to moderately al- fine gravel.
kaline loamy or clayey surface layer and underlying Permeability is moderately rapid. Available water
material and are underlain by sand or sand and gravel capacity is low. The effective rooting depth is 60 inches or
within 48 inches. In places they have a gleyed layer in the more. Surface runoff is slow, and the erosion hazard is
low.
underlying material. This soil is suited to limited cropping. It is sandy and
Most of the acreage is subject to flooding. The water pp g'
subject to flooding. Pasture is the best use. Tall wheat-
--table is at or near the surface early in spring and recedes grass, tall fescue, and annual sweetclover are some of the
to as s es 48 inches late in fall in some years. most suitable crops. Light, frequent irrigation by furrows
These soils are used for rangeland and wildlife habitat. and flooding is best. Commercial fertilizer improves the
Some small areas have been reclaimed by major drainage amount and value of forage produced.
and leveling and are used for irrigated crops. The potential native vegetation is dominated by
The potential native vegetation is dominated by alkali switchgrass, indiangrass, sand bluestem, sand reedgrass,
sacaton, and and western aewheatgrass.als Saltgrass,
ominent. sideoats grama, needleandthread, and blue grama. Much
— sedge, rush, and alkali bluegrass are also prominent. of this range site includes other soils and vegetation in
Potential production ranges from 3,000 pounds per acre in such a complex pattern that it is difficult to map them
favorable years to 2,000 pounds in unfavorable years. As separately. Potential production ranges from 2,500 pounds
range condition deteriorates, the switchgrass, alkali per acre in favorable years to 1,500 pounds in unfavorable
sacaton, and western wheatgrass decrease and saltgrass, years. As range condition deteriorates, the tall and mid
sedge, and rush increase. grasses decrease; blue grama, sand dropseed, and forbs
Management of vegetation should be based on taking increase; and forage production drops. Undesirable weeds
_ '-31f and leaving half of the total annual production. Seed- and annuals invade the site as range condition becomes
g is difficult and costly because numerous tillage prac- poorer.
tices are required to eliminate the saltgrass sod. Management of vegetation should be based on taking
Switchgrass, western wheatgrass, alkali sacaton, tall half and leaving half of the total annual production. Seed-
- wheatgrass, and tall fescue are suitable for seeding. They ing is desirable only in areas large enough to interseed or
can be seeded into a clean, firm seedbed. Seedbed to prepare a seedbed. Switchgrass, sand bluestem, sand
preparation usually requires more than 1 year to reedgrass, sideoats grama, little bluestem, blue grama, pu-
eliminate the saltgrass sod. A grass drill should be used. bescent wheatgrass, and intermediate wheatgrass are
_
Seeding early in spring has proven most successful. suitable for seeding. This soil can be seeded by using an
Wetland wildlife, especially waterfowl, utilize this unit. interseeder or a firm, clean sorghum stubble. A grass drill
The wetland plants provide nesting and protective cover, is required. Seeding early in spring has proven most suc-
cessful.
— as well as some food. The nearby irrigated cropland,
This soil is generally not suited to the establishment
where wildlife obtain much of their food and find protec- and growth of trees and shrubs. Onsite investigation is
tive cover, makes this unit valuable to both wetland and needed to determine feasibility and possible tree and
openland wildlife. shrub species.
— Openland wildlife, especially pheasant, use this unit for
cover and nesting. Deer find excellent cover in some Wildlife is an important secondary use of this soil. The
areas. cropland areas provide favorable habitat for ring-necked
These valuable wildlife areas should be protected from pheasant and mourning dove. Many nongame species can
fire and fenced to prevent encroachment and overuse by be attracted by establishing areas for nesting and escape
livestock. They should not be drained. cover. For pheasants, undisturbed nesting cover is essen-
These soils have good potential as a source of sand and tial and should be included in plans for habitat develop-
-- gravel. Capability subclass VIw; Salt Meadow range site. ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, deer and antelope, can be at-
tracted by managing livestock grazing and reseeding
where needed.
This soil is not suited to urban or recreational develop-
ment because of the flood hazard. Capability subclass
IVw irrigated, VIw nonirrigated; Sandy Bottom land
range site.
Hello