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Proposed Fox Creek 26 Compressor Station
Soils Report
Soils affected by the proposed Fox Creek 26 Compressor station were evaluated for a number
of factors to assess potential Project impacts . An assessment of existing soil quality or sensitivity
was completed by evaluating the following factors: wind and water erodibility, prime farmland ,.
hydric characteristics, and drainage characteristics . Soil disturbances can increase the potential
for erosion , which can cause topsoil to be lost, and can negatively affect soil stability and quality.
channelized drainage area , which cuts into neighboring peetz gravelly sandy loam , occurs
directly to the southwest of the compressor station footprint and will be managed by using
sediment and erosion control best management practices along the southern portion of the
Project footprint. Construction can also result in mixing of topsoil with subsoil , resulting in reduced
soil structure and stability, soil fertility, and important soil biological function . The following table
lists the characteristics and soil limitations of each series for the proposed Fox Creek 26
Compressor Station .
At the proposed Fox Creek 26 Compressor Station , soil data provided by NRCS (shown on the
attached figure) indicates that the ascalon fine sandy loam present within the Project footprint;
• is susceptible to water erosion ,
• is not susceptible to wind erosion ,
• is classified as a farmland of statewide importance ,
• is considered well drained ,
• is not classified as hydric.
Erosional Potential Frequency
Prime Hydric Runoff Drainage of Impacts
Water Factor 3 Wind Farmland c Rating ci class a Class f g (Acres) n
Group b Flooding
4 - Ascalon fine sandy loam, 0 to 6 percent slopes
Farmland
4e 3 of 0 Low Well None 3 . 5
statewide drained
importance
51 - Peetz gravelly sandy foam, 5 to 20 percent slopes (located directly outside of footprint)
Not prime Somewhat
6e 5 0 Low excessively None 0 . 0 '
farmland
drained
a Soils designated as having a Capability Class of 4 or greater AND a capability subclass of e , OR the slope class
is greater than 8 to 15 percent is considered to have an erosion potential due to water.
b Soils in wind erodibility groups 5 and 6 are considered to have an erosion potential due to wind .
c Prime farmland includes categories: Prime farmland if irrigated , and farmland of statewide importance , not prime
farmland as designated by the NRCS.
die Rating as designated by the NRCS .
f Includes soils that have clay loam or finer textures and are somewhat poor, poor, or very poor drainage classes.
g Rate as designated by the NRCS.
h Permanent impact acreages .
i Neighboring soil type at drainage feature
20200935. 001 ADEN October 9, 2019
2019 Kleinfelder
KLEINEELDER
Bright People. Right Solutions.
The ascalon fine sandy loam would not be a limiting factor to the construction and long-term
operation of the proposed Fox 26 Compressor Station . To mitigate the impacts of construction on
Project soils , grading and clearing of vegetation would be conducted only to provide adequate
construction and operational staging and access to the Project areas. Additionally, construction
disturbance avoid disturbance in the southwest drainage feature which includes peetz gravelly
sandy loam.
To reduce the potential for erosion , disturbance or removal of vegetation would be kept to the
least extent practical for safe construction conditions . Areas disturbed from construction activities
that are not actively cultivated would be re-seeded using a mix of annual and perennial species
established through consultation with the local Natural Resources Conservation Service ( NRCS )
and landowner. Reseeding would not be performed where surface facilities require the site to be
maintained in a vegetation-free condition .
20200935. 001 DEN October 9, 2019
2019 Kleinfelder
Soil Map—Weld County, Colorado, Northern Part
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Map Scale: 1:24,200 if printed on A landscape (11" x as") sheet. zji
�' Meters
N 0 350 700 1400 2100 '
Feet
A 0 1000 2000 4000 0000
Map projection : Web Mercator Corner coordinates : WGS84 Edge tics: lJTM Zone 13N WG584
USDA Natural Resources Web Soil Survey 9/25/2019
Conservation Service National Cooperative Soil Survey Page 1 of 2
Soil Map—Weld County, Colorado, Northern Part
(Fox Creek 26 Compressor Station )
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) gi Spoil Area The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI0 1 :24,000 .
Stony Spot
Soils Please rely on the bar scale on each map sheet for map
Very Stony Spot measurements.
Soil Map Unit Polygons
Wet Spot Soil Map Unit Lines Source of Map : Natural Resources Conservation Service
Other Web Soil Survey URL :
p Soil Map Unit Points Coordinate System: Web Mercator (EPSG :3857)
� Special Line Features
Special Point Features Maps from the Web Soil Survey are based on the Web Mercator
lullBlowout Water Features projection , which preserves direction and shape but distorts
Streams and Canals distance and area. A projection that preserves area, such as the
lizt Borrow Pit Albers equal-area conic projection, should be used if more
Transportation accurate calculations of distance or area are required .
x Clay Spot
.Het Rails
Closed Depression This product is generated from the USDA-NRCS certified data as
omits Interstate Highways of the version date(s) listed below.
' - ' Gravel Pit
I{ 71 US Routes Soil Survey Area : Weld County, Colorado, Northern Part
Gravelly Spot Major Roads Survey Area Data : Version 13, Sep 10, 2018
, , Landfill Local Roads Soil map units are labeled (as space allows) for map scales
1 :50,000 or larger.
Lava Flow
Background
.r, Marsh or swamp � ' Aerial Photography Date(s) aerial images were photographed : Oct 22, 2014—Oct 2,
2017
Mine or Quarry
The orthophoto or other base map on which the soil lines were
ii'', Miscellaneous Water compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
O Perennial Water shifting of map unit boundaries may be evident.
c _:7 Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
'Ra Slide or Slip
Sodic Spot
USDA Natural Resources Web Soil Survey 9/25/2019
a Conservation Service National Cooperative Soil Survey Page 2 of 2
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