HomeMy WebLinkAbout20162104.tiffSO LOGIC
January 12, 2016
AGPROfessionals, LLC
3050 67th Avenue, Suite 200
Greeley, Colorado 80634
Attn: Ms. Kelsey Bruxvoort
Re: Geology Report
AJR Dairy
Portions of Section 13, T5N, R65W and Section 18, T5N, R64W
Weld County, Colorado
Soilogic Project # 16-1004
Ms. Bruxvoort:
Soilogic, Inc. (Soilogic) personnel have completed the geologic evaluation you requested
for the above referenced project. Our evaluation was completed through review of
mapped and published information concerning site soil and groundwater conditions. A
list of the references reviewed is included with this report.
The project site includes a total of approximately 330 acres located in Section 13,
Township 5 North, Range 65 West and Section 18, Township 5 North, Range 64 West of
the 6th Principal Meridian in, Weld County, Colorado. We understand the subject
property may be rezoned to allow for industrial development. The property is located
north of U.S. Highway 34, south of Weld County Road 58 and both east and west of
Weld County Road 47%, east of Greeley in Weld County, Colorado. Based on our
review of topographic maps of the area, she site is relatively level with a gentle overall
slope downward to the east and a maximum difference in ground surface elevation across
the parcel estimated to be approximately 5 feet.
The included soil type delineation diagram outlines those soil groupings identified at the
site by Weld County Soil Conservation Service (SCS) maps. SCS descriptions of those
soil types are included with this report. In general, the near -surface soils at this site
consist of low to moderate plasticity loam to sandy clay loam and gravelly sand with
varying amounts of silt from the Altvan, Ascalon, Dacono, Nunn and Ustic Torriorthents
series. The mapped soils consist of Pinedale and Bull Lake Age mixed alluvium and
eolian clay, silt, sand and gravel from the upper Pleistocene geologic period. Mapped
Soilogic, Inc.
3050 67th Avenue, Suite 200 • Greeley, CO 80634 • (970) 535-6144
P.O. Box 1121 • Hayden, CO 81639 • (970) 276-2087
Geology Report
AJR Dairy
Weld County, Colorado
Soilogic # 16-1004
2
information indicates the property is not in an area identified as being flood prone and
would be expected to have groundwater at depths ranging from approximately 5 to 20
below ground surface.
According to geologic maps of the area, the site overburden soils are underlain by the
Laramie bedrock formation consisting of interbedded shale, claystone and sandstone
from the Upper Cretaceous period. According to SCS data, the depth to bedrock would
be expected to be greater than 5 feet across the site
Based on our review of the site as outlined above, we expect the near -surface soils could
be used for support of lightly to moderately loaded industrial structures. Deep foundation
systems could be considered if heavier foundation loads are anticipated.
Very limited areas of the site are mapped as containing silty/clayey sand and gravel
deposits of low quality due to the amount of fines in the material. In addition, based on
the thickness of overburden soils overlying gravelly deposits, we do not expect these
materials to be an economically recoverable gravel resource at this site. During our
review of available site data, we did not identify other potential geologic hazards as
outlined in H.B. 1041.
We appreciate the opportunity to be of service to you on this project. If we can be of
further service to you in any way or if you have any questions concerning the enclosed
information, please do not hesitate to contact us.
Very Truly Yours,
Soilogic, In
Wolf von Carlowitz, P.E.
Principal Engineer
Geology Report
AJR Dairy
Weld County, Colorado
Soilogic # 16-1004
3
REFERENCES
1 Colton R.B. and Harold R. Fitch, 1974, Map Showing Potential Sources of Gravel
and Crushed -Rock Aggregate, in the Boulder -Fort Collins -Greeley Area, Front Range
Urban Corridor, Colorado: U.S. Geological Survey Miscellaneous Investigation
Series Map I -855-D.
2. Colton R.B., 1978, Geologic Map of the Boulder -Fort Collins -Greeley Area,
Colorado: U.S. Geological Survey Miscellaneous Investigation Series Map I -955-G.
3. Hershey L.A. and Schneider, Jr. P.A., 1972, Geologic Map of the Lower Cache La
Poudre River Basin, North-Central Colorado: U.S. Geological Survey Miscellaneous
Investigation Series Map I-687.
4. Hillier D. and Schneider, Jr. P.A., 1979, Depth to the Water Table in the Boulder -Fort
Collins -Greeley Area, Front Range Urban Corridor, Colorado: U.S. Geological
Survey Miscellaneous Investigation Series Map I -855-I.
5. United States Department of Agriculture Soil Conservation Service and Forest
Service in Cooperation with Colorado Agricultural Experiment Station, 1980, Soil
Survey of Weld County Area, Colorado, Maps 239-812/3.
6. Schneider, Jr. P. A., 1983 Shallow Groundwater in the Boulder -Fort Collins -Greeley
Area, Front Range Urban Corridor, Colorado 1975-77: U.S. Geological Survey
Water Resources Investigations Report 83-4058.
7 Soil Survey Staff, Natural Resources Conservation Service, United States Department
of Agriculture. Web Soil Survey. Available online at
http://websoilsurvey.nrcs.usda.gov/ accessed (June 13, 2014).
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Natural Resources
Conservation Service
Soil Map —Weld County, Colorado, Southern Part
AJR Dairy
Map Unit Legend
Weld County, Colorado, Southern Part (CO618)
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
1
Altvan loam, 0 to 1 percent
slopes
100.4
30.6%
2
Altvan loam, 1 to 3 percent
slopes
10.9
3.3%
8
Ascalon loam, 0 to 1 percent
slopes
58.4
17.8%
9
Ascalon loam, 1 to 3 percent
slopes
33.2
10.1%
21
Dacono clay loam, 0 to 1
percent slopes
8.0
2.4%
41
Nunn clay loam, 0 to 1 percent
slopes
116.9
35.7%
68
Ustic Torriorthents, moderately
steep
0.0
0.0%
Totals for Area of Interest
327.8
100.0%
v_SDA Natural Resources Web Soil Survey
a Conservation Service National Cooperative Soil Survey
1/12/2016
Page 3 of 3
Map Unit Description: Altvan loam, 0 to 1 percent slopes --Weld County, Colorado, Southern Part AJR Dairy
Weld County, Colorado, Southern Part
1—Altvan loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 361j
Elevation: 4,500 to 4,900 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost -free period: 130 to 150 days
Farmland classification: Not prime farmland
Map Unit Composition
Altvan and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Altvan
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Old alluvium
Typical profile
H1 - 0 to 10 inches: loam
H2 - 10 to 25 inches: clay loam
H3 - 25 to 60 inches: gravelly sand
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high to high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 5 percent
Available water storage in profile: Low (about 5.7 inches)
Interpretive groups
Land capability classification (irrigated): 3s
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
US DA
a
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Altvan loam, 0 to 1 percent slopes ---Weld County, Colorado, Southern Part
AJR Dairy
Minor Components
Cascajo
Percent of map unit:
Aquic haplustolls
Percent of map unit:
Landform: Swales
9 percent
1 percent
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
a Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Altvan loam, 1 to 3 percent slopes ---Weld County, Colorado, Southern Part AJR Dairy
Weld County, Colorado, Southern Part
2 Altvan loam, 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: 361w
Elevation: 4,500 to 4,900 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost -free period: 130 to 150 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Altvan and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Altvan
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Old alluvium
Typical profile
HI - 0 to 10 inches: loam
H2 - 10 to 24 inches: sandy clay loam
H3 - 24 to 60 inches: gravelly sand
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high to high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 5 percent
Available water storage in profile: Low (about 5.6 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
L'SDA Natural Resources Web Soil Survey
® Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Altvan loam, 1 to 3 percent slopes ---Weld County, Colorado, Southern Part AJR Dairy
Minor Components
Cascajo
Percent of map unit: 9 percent
Aquic hapiustolls
Percent of map unit: 1 percent
Landform: Swales
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Ascalon loam, 0 to 1 percent slopes ---Weld County. Colorado, Southern AJR Dairy
Part
vtWleild County, Colorado, Southern Part
8 Ascalon loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 2tlnq
Elevation: 3,870 to 6,070 feet
Mean annual precipitation: 13 to 16 inches
Mean annual air temperature: 47 to 54 degrees F
Frost -free period: 135 to 160 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Ascalon and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Ascalon
Setting
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Wind -reworked alluvium and/or calcareous sandy
eolian deposits
Typical profile
Ap - 0 to 6 inches: loam
Bt1 - 6 to 12 inches: sandy clay loam
Bt2 - 12 to 19 inches: sandy clay loam
Bk - 19 to 35 inches: fine sandy loam
C - 35 to 80 inches: fine sandy loam
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Negligible
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high to high (0.60 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Salinity, maximum in profile: Nonsaline (0.1 to 1.9 mmhos/cm)
Sodium adsorption ratio, maximum in profile: 1.0
Available water storage in profile: Moderate (about 8.0 inches)
Interpretive groups
Land capability classification (irrigated): 3e
USDA Natural Resources Web Soil Survey
® Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Ascalon loam, 0 to 1 percent slopes --Weld County, Colorado, Southern AJR Dairy
Part
Land capability classification (nonirrigated): 4c
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Minor Components
Olnest
Percent of map unit 10 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Sandy Plains (R067BY024CO)
Nunn
Percent of map unit 5 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Loamy Plains (R067BY002CO)
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
L.sDA Natural Resources Web Soil Survey
Sims Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Ascalon loam, 1 to 3 percent slopes --Weld County, Colorado, Southern AJR Dairy
Part
Weld County, Colorado, Southern Part
9 Ascalon loam, 1 to 3 percent slopes
Map Unit Setting
National map unit symbol. 3645
Elevation: 4,500 to 4,900 feet
Mean annual precipitation: 12 to 17 inches
Mean annual air temperature: 46 to 57 degrees F
Frost -free period: 130 to 160 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Ascalon and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Ascalon
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Alluvium
Typical profile
H1 - 0 to 8 inches: loam
H2 - 8 to 18 inches: sandy clay loam
H3 - 18 to 60 inches: fine sandy loam
H4 - 60 to 64 inches: fine sandy loam
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high to high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to
2.0 mmhos/cm)
Available water storage in profile: Moderate (about 8.0 inches)
Interpretive groups
Land capability classification (irrigated): 2e
Land capability classification (nonirrigated): 4c
Hydrologic Soil Group: B
USDA Natural Resources Web Soil Survey
a Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Ascalon loam, 1 to 3 percent slopes ---Weld County, Colorado, Southern AJR Dairy
Part
Minor Components
Platner
Percent of map unit: 7 percent
Olney
Percent of map unit: 5 percent
Stoneham
Percent of map unit: 3 percent
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
alfigm Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Dacono clay loam, 0 to 1 percent slopes --Weld County, Colorado, AJR Dairy
Southern Part
Weld County, Colorado, Southern Part
21 Dacono clay loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 361y
Elevation: 4,550 to 4,970 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 48 to 52 degrees F
Frost -free period: 140 to 160 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Dacono and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Dacono
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Mixed alluvium
Typical profile
H1 - 0 to 12 inches: clay loam
H2 - 12 to 21 inches: clay loam
H3 - 21 to 27 inches: day loam
H4 - 27 to 60 inches: very gravelly sand
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high (0.20 to 0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 15 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to
2.0 mmhos/cm)
Available water storage in profile: Moderate (about 6.3 inches)
Interpretive groups
Land capability classification (irrigated): 2s
Land capability classification (nonirrigated): 3s
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
USDA Natural Resources Web Soil Survey
r Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Dacono clay loam, 0 to 1 percent slopes --Weld County, Colorado, AJR Dairy
Southern Part
Minor Components
Heldt
Percent of map unit: 5 percent
Nunn
Percent of map unit: 5 percent
Altvan
Percent of map unit: 5 percent
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Nunn clay loam, 0 to 1 percent slopes —Weld County, Colorado, Southern AJR Dairy
Part
Weld County, Colorado, Southern Part
41 Nunn clay loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 2ting
Elevation: 4,100 to 5,700 feet
Mean annual precipitation: 14 to 15 inches
Mean annual air temperature: 48 to 52 degrees F
Frost -free period: 135 to 152 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Nunn
Setting
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Pleistocene aged alluvium derived from igneous,
metamorphic and sedimentary rock and/or eolian deposits
Typical profile
Ap - 0 to 6 inches: clay loam
Bt1 - 6 to 10 inches: clay loam
Bt2 - 10 to 26 inches: clay loam
Btk - 26 to 31 inches: clay loam
Bk1 - 31 to 47 inches: loam
Bk2 - 47 to 80 inches: loam
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat):
Moderately low to moderately high (0.06 to 0.20 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 7 percent
Salinity, maximum in profile: Nonsaline (0.1 to 1.0 mmhos/cm)
Sodium adsorption ratio, maximum in profile: 0.5
Available water storage in profile: High (about 9.1 inches)
usax Natural Resources Web Soil Survey
magi Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Nunn clay loam, 0 to 1 percent slopes ----Weld County, Colorado, Southern AJR Dairy
Part
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
Minor Components
Heldt
Percent of map unit: 10 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Clayey Plains (R067BY042CO)
Wages
Percent of map unit: 5 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Loamy Plains (R067BY002CO)
Data Source Information
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
® Conservation Service National Cooperative Soil Survey
1/12/2016
Page 2 of 2
Map Unit Description: Ustic Torriorthents, moderately steep --Weld County, Colorado, Southern AJR Dairy
Part
Weld County, Colorado, Southern Part
68 Ustic Torriorthents, moderately steep
Map Unit Setting
National map unit symbol: 3631
Elevation: 4,450 to 5,100 feet
Mean annual precipitation: 10 to 16 inches
Mean annual air temperature: 46 to 54 degrees F
Frost -free period: 120 to 160 days
Farmland classification: Not prime farmland
Map Unit Composition
Ustic torriorthents and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Ustic Torriorthents
Setting
Landform: Escarpments, breaks
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Gravelly alluvium
Typical profile
H1 - 0 to 10 inches: gravelly sand
H2 - 10 to 60 inches: gravelly sand
Properties and qualities
Slope: 9 to 15 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Excessively drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): High to
very high (5.95 to 19.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 5 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to
2.0 mmhos/cm)
Available water storage in profile: Very low (about 1.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 7s
Hydrologic Soil Group: A
USDA Natural Resources Web Soil Survey
aem Conservation Service National Cooperative Soil Survey
1/12/2016
Page 1 of 2
Map Unit Description: Ustic Torriorthents, moderately steep ---Weld County, Colorado, Southern AJR Dairy
Part
Minor Components
Columbo
Percent of map unit: 10 percent
Eckley
Percent of map unit: 3 percent
Otero
Percent of map unit: 2 percent
Data Source Informatio
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
1/12/2016
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