HomeMy WebLinkAbout1.09 Wetland Delineation Report
WETLAND DELINEATION REPORT
NORTH HANGS RANCH
GARFIELD COUNTY, COLORADO
PREPARED FOR:
Western Slope Materials LLC
Sean Mello, General Manager
PO Box 1319
Carbondale, CO 81623
November 2020
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Table of Contents
Introduction .................................................................................................................................................... 3
Applicant and Property Owner ....................................................................................................................... 3
Applicant: ................................................................................................................................................... 3
Property Owner: ......................................................................................................................................... 3
Property Location Information: .................................................................................................................. 3
Site Description .............................................................................................................................................. 3
Methods .......................................................................................................................................................... 4
Results ............................................................................................................................................................ 5
Vegetation .................................................................................................................................................. 5
Hydrology ................................................................................................................................................... 7
Soils ............................................................................................................................................................ 8
Summary ........................................................................................................................................................ 8
References .....................................................................................................................................................10
LIST OF TABLES
Table 1: Wetlands and Waters of the U.S. Summary .………………………………. 5
Table 2: Non-jurisdictional aquatic resources on the North Hangs Ranch parcel …… 5
Table 3: List of plant species commonly found on the North Hangs Ranch Parcel
study area …………………………………………………………………………..… 6
APPENDICES
APPENDIX 1: Photographic Documentation ………………………………………… 10
APPENDIX 2: Data Sheets …………………………………………………………… 13
APPENDIX 3: Map Exhibits ………………………………………………………….. 38
Figure 1: Project Vicinity Map
Figure 2: JD Investigation Area Detail
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WETLAND DELINEATION REPORT
NORTH HANGS RANCH
GARFIELD COUNTY, COLORADO
Introduction
Environmental Solutions, Inc. (ESI) delineated wetlands and waters of the U.S. on
property owned by Western Slope Materials LLC (WSM) in Garfield County, Colorado.
WSM is proposing to begin mining the property for sand and gravel resources. A large
portion of the property is flood-irrigated from an extensive ditch system all of which
stems from the Colorado River. This delineation was conducted within the proposed
mining area to delineate jurisdictional wetlands and Waters of the U.S. subject to
regulation under the Clean Water Act (CWA).
Applicant and Property Owner
Applicant:
Sean Mello, General Manager
Western Slope Materials LLC
PO Box 1319
Carbondale, CO 81623
Property Owner:
Same as Applicant
Property Location Information:
Latitude: 39.543189°N, Longitude: -107.678256°W
Legal: Section 9, Township 6 South, Range 92 West, Garfield County, Colorado
Address: 6533 CR 346, Silt, Colorado 81652
The property is accessed from the I-70 corridor by taking the Mamm Creek exit and
turning north to the Frontage Road (CR 346). Turn right and head east on CR 346
parallel to I-70 for 2 miles. The property entrance is on the left at the end of the frontage
road.
The proposed gravel pit is immediately north of I-70 and south of the Colorado River
approximately 1/2 mile southwest of Silt, Colorado (Figure 1), and is situated at
approximately 5400 feet in elevation.
Site Description
The study area encompasses approximately 56 acres, much of which is flood-irrigated via
an elaborate network of ditches. All of the irrigation water stems from the Colorado
River. The property has historically been used for hay production and cattle grazing.
Much of the property falls within the historical floodplain of the Colorado River and
contains remnant cottonwood galleries and evidence of some old floodplain channels,
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mainly on the northern half of the parcel, though none currently show any evidence of
scouring, drift deposits, water marks or other surface hydrological evidence.
Total area of aquatic resources delineated in the study area is 5.81 acres (Figure 2),
consisting of palustrine emergent vegetation and open Waters. It should be noted that
0.60 acres of that total, however, occurs along the main irrigation ditch (Bernudy Ditch,
WET 5) and is therefore exempt from CWA regulation according to the Preamble
language for 33 CFR 328, published in Federal Register Volume 51, Number 219,
published November 13, 1986 (page 41217), which states “For clarification, it should be
noted that we generally do not consider the following waters to be Waters of the United
States…”
a) Non-tidal drainage and irrigation ditches excavated on dry land
b) Artificially irrigated areas which would revert to upland if the irrigation ceased
c) Artificial lakes or ponds created by excavating and/or diking dry land to collect
and retain water and which are used exclusively for such purposes as stock
watering, irrigation, settling basins, or rice growing
d) Artificial reflecting or swimming pools or other small ornamental bodies of water
created by excavating and/or diking dry land to retain water for primarily
aesthetic reasons.
The Bernudy Ditch is quite obviously an excavated irrigation conveyance with
adjudicated water rights serving multiple properties and therefore meets the specific
definition and intent of subsections (a) and (b) of the Preamble and is therefore not
considered a Water of the United States.
North of the Bernudy ditch in the non-irrigated portion of the property, there remain
some segments of an old, shallow floodplain channel overgrown by Russian olive
saplings. One section of this channel is noticeably deeper than the others and supports a
thick stand of Arctic rush (WET 2), and it appears to have a subsurface connection to the
river and maintained saturated soils throughout the summer of 2020.
In the irrigated portion of the study area, WET 1, 3, 4 and 6 all appear to have
hydrological connections to the irrigation system, and the apparent lack of connection to
any natural drainages, springs, swales, or seeps calls into question the hydrology
supporting these areas. However, given timeline constraints, it was beyond the scope of
this study to determine whether these apparent wetland areas are solely agriculturally-
induced and possibly exempt from CWA regulation. Therefore we assume some portion
of the hydrology is naturally occurring and these wetland areas are jurisdictional.
Photographic documentation is provided in Appendix 1.
Methods
All site work was completed by Steve D. Dahmer of ESI, applying methodology
specified by the Corps of Engineers Wetlands Delineation Manual (1987) and the 2008
Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West
Region (Version 2.0). Several site visits were made throughout the growing season to
monitor hydrology and plant growth. Wetland determinations at sampling points were
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based on the hydrophytic vegetation dominance, the presence of hydric soils, and
evidence or indications of wetland hydrology. Conditions were normal through the early
growing season, but became droughty later in the summer and fall. The most recent
wetland indicator plant list was used for the Arid West Region (USACE 2016).
Pre-field research included reviews of historic aerial imagery from United States
Geological Survey (“USGS”), Natural Resource Conservation Service (“NRCS”), the
National Wetland Inventory (“NWI”), and aerial photography (Google Earth) and soils
data for the area maintained by the Natural Resources Conservation Service (NRCS).
On-site data collections included hand-digging study pits to inspect for hydrology and
hydric soil indicators. A representative sample of these study pits were recorded on
routine data forms (Appendix 2), and vegetation parameters were also recorded at each of
the sampling locations.
Wetland boundaries and all delineation points were recorded with a Thales GPS unit
supporting sub-meter accuracy.
Results
The wetlands and waters delineated on the property are illustrated in Figure 2, and
summarized according to aquatic resource type and Cowardin classification in Tables 1
and 2 below.
Table 1: Wetlands and Waters of the U.S. delineated on the North Hangs Ranch
parcel
Area Name Aquatic Resource Type Status Acres
WET 1 Palustrine emergent Jurisdictional 0.23
WET 2 Palustrine emergent Jurisdictional 0.10
WET 3 Palustrine emergent Jurisdictional 0.18
WET 4 Palustrine emergent Jurisdictional 0.61
WET 6 Palustrine emergent Jurisdictional 2.68
Total Jurisdictional Wetlands 3.80
WOTUS Waters of the U.S. (Colorado River) 1.41
Total Waters of the U.S. 1.41
Total Jurisdictional Area 5.21
Table 2: Non-jurisdictional aquatic resources on the North Hangs Ranch parcel
Area Name Aquatic Resource Type Acres
WET 5 Palustrine emergent
(Bernudy Ditch-Irrigation Conveyance)
0.55
WET 5 Bernudy Ditch open channel 0.05
Total Non-JD Area 0.6
* While sampled site conditions technically meet the definition of jurisdictional wetlands within the
Bernudy Ditch, it is obviously an irrigation conveyance, and is therefore non-jurisdictional according to
Preamble language for 33 CFR 328, published in Federal Register Volume 51, Number 219, published
November 13, 1986 (page 41217).
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Vegetation
The study area contains a mixture of grass-forb herbaceous vegetation in the irrigated
pastures. Non-irrigated areas range from mature cottonwood galleries with shrubby mid-
story and sparse herbaceous understories to very dry, sparse shrublands and grassy areas.
Flood irrigation has been heavily applied on the pasture areas, resulting in some areas
dominated by hydrophytes along and below the ditches. Irrigation has typically begun in
mid-April and does not shut off until October in most years. Irrigation water was still
being applied to the western fields at our last site visit on October 27, 2020.
The dry upland areas in the northeastern portion of the property are dominated by an
overstory of mature narrowleaf cottonwood (Populus angustifolia) and Fremont
cottonwood (Populus fremontii) with a dense mid-story of invasive Russian olive
(Elaeagnus angustifolia). The hebaceous understory is generally sparse consisting of
intermediate wheatgrass (Thinopyrum intermedium), smooth brome (Bromus inermis),
orchardgrass (Dactylis glomerata), globemallow (Sphaeralcea coccinea) and weedy
forbs such as musk thistle (Carduus nutans), houndstongue (Cynoglossum officinale) and
curlycup gumweed (Grindelia squarossa).
Mesic areas receiving irrigation are dominated by thicker and more robust stands of
smooth brome and orchardgrass in addition to Kentucky bluegrass (Poa pratensis), white
clover (Trifolium repens) and red fescue (Festuca rubra).
The ditches and over-irrigated areas are generally dominated with thick, mixed stands of
redtop bentgrass (Agrostis stolonifera), Arctic rush (Juncus arcticus), small-wing sedge
(Carex microptera), clustered field sedge (Carex praegracilis), inland saltgrass
(Distichlis spicata) and tall scouring rush (Equisetum hyemale). Some of the lowest
ditches have stands of reed canarygrass (Phalaris arundinacea), broadleaf cattail (Typha
lattifolia), hardstem bulrush (Schoenoplectus acutis), water sedge (Carex aquatilis) and
creeping spikerush (Eleocharis palustris).
Table 3 contains a list of plants commonly encountered in the study area.
Table 3: Plant species commonly found on the North Hangs Ranch study area.
ID Scientific Name Common Name Indicator Status Stratum
1 Poa pratensis Kentucky Bluegrass FAC H
2 Bromis inermis Smooth Brome FACU H
3 Dactylis glomerata Orchardgrass FACU H
4 Agrostis stolonifera Redtop Bentgrass FAC H
5 Typha latifolia Broadleaf Cattail OBL H
6 Carex microptera Small-Wing Sedge FACU H
7 Carex utriculata Beaked Sedge OBL H
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8 Carex praegracilis Clustered Field Sedge FACW H
9 Equisetum hyemale Tall Scouring Rush FACW H
10 Phalaris arundinacea Reed Canarygrass FACW H
11 Eleocharis palustris Creeping Spikerush FACW H
12 Juncus arcticus Arctic Rush FACW H
13 Festuca rubra Red Fescue FAC H
14 Carex aquatilis Water Sedge OBL H
15 Populus angustifolia Narrowleaf Cottonwood FACW T
16 Elaeagnus angustifolia Russian Olive FAC T
17 Grindelia squarrosa Curly-Cup Gumweed FACU H
18 Cirsium arvense Canada Thistle FAC H
19 Sphaeralcea coccinea Orange Globemallow UPL H
Hydrology
Twenty-two (22) study pits were excavated across the property to specifically inspect for
hydrology indicators, twelve (12) of which were recorded on Arid West data forms as
representative of the study area (Appendix 2). Pits were dug along transects extending
from a baseline in accordance with Level 2 procedures for areas greater than 5 acres in
size. Study pits were recorded along each transect to sample each change in vegetation
community, with additional exploratory pits dug between sample sites to determine the
wetland/upland boundary.
The hydrology on much of this site is clearly sourced from irrigation conveyances
stemming from diversions from the Colorado River, which conclusion is also clearly
supported by the soils data in many of the study pits. However, in some low-lying areas,
there is also a significant change in the soil type and the hydrophytic vegetation
community (WET 2, 4 and 6). Hydrology in this area is complex due to the plethora of
irrigation laterals, and time constraints prevented making a definitive determination about
the hydrology source(s) supporting the hydrophytes here. Due to the topography of these
lower areas, a perennial subsurface source could not be ruled out. Therefore, given the
abrupt change in soil type and vegetation community, we assumed hydrology criteria
were met and included these as jurisdictional wetlands. There are no apparent springs,
seeps, draws or other water sources on the site, but a definitive conclusion would require
a robust hydrology study and irrigation system manipulations, which was beyond the
scope of this effort.
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Soils
Twenty-two (22) study pits were dug by hand to evaluate the soils on the property.
Results for twelve (12) representative pits were recorded on standard Arid West data
forms (Appendix 2). This delineation relied upon the presence/absence of field indicators
for hydric soils as set forth in the 2010 NRCS manual Field Indicators of Hydric Soils in
the United States to determine whether the soils sampled contained hydric indicators.
NRCS soil survey data shows three major soil types on the study area, including Wann
sandy loams 1-3% slopes, Halaquepts, nearly level, and Torrifluvents, nearly level.
Some small areas of Kim loam and Arvada loams are also mapped but these were not
encountered in our sampling. Only the Halaquepts are listed as a potentially hydric soils
and are noted to be poorly drained. The other two series are deep, well-drained soils with
no restrictive features and no flooding or ponding events.
Hand-dug soil pits generally confirmed the NRCS mapped types. The Wann sandy loams
were consistent and generally had loam surface layers, sometimes ranging from silty
loam to sandy-loam pockets. The torrifluvents were generally loam to sandy loams with
deeper horizons becoming coarser with mixed gravels and cobbles. The Halaquepts were
notable for their clay content and impermeability, and were abruptly dissimilar from the
other soils on the property.
Munsell color (moist) in upland locations ranged from 10YR 3/4 to 10YR 3/2, and
remained consistent throughout the upper profile, with little or no redox features present
in the upper part. Redox features encountered were consistent with historically flood-
irrigated pastures common in the area, with 1-5% of the pedon showing redox
concentrations along pore linings, but no reduced matrix, gleying, muck or other
indicators met. In short, extensive flood irrigation has caused some redox features to
begin forming, but the seasonal application of water has not occurred long enough from a
geological standpoint to meet minimum hydric soil indicators.
The identified wetland areas were markedly different, mostly comprised of halaquepts.
These areas generally had a value and chroma of 7.5YR 3/2 at the surface with clay loam
to silty clay loam material underlain with a heavier clay that generally had a value and
chroma of Gley 1 3/N and often 10-20% redox concentrations along pore linings (2.5YR
4/6). These pits met indicator A11, depleted below dark surface.
Summary
ESI delineated at total of 3.8 acres of jurisdictional palustrine emergent (PEM) wetlands
on the North Hangs Ranch study area. An additional 0.55 acres of PEM wetland
vegetation occurs along the excavated Bernudy Ditch (WET 5), but are not jurisdictional
because it is an irrigation conveyance as defined by Preamble language in Section 404 of
CWA and are therefore not considered jurisdictional. Waters of the U.S. (WOTUS)
identified in the study area were in the Colorado River proper on the northwest corner of
the property and covered 1.41 acres. There are no other springs, seeps or streams evident
on the parcel. The identified jurisdictional wetland areas WET 1, 3, 4 and 6 are
unquestionably enhanced by irrigation water, and it is possible these sites are
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agriculturally-induced. However, a definitive determination would require a robust
hydrology study to include examination of potential subsurface sources and manipulation
of the existing flood irrigation system during the growing season, which was beyond the
scope of this report. Given the presence of both vegetation and soil parameters,
hydrology was assumed and we therefore included WET 1, 3, 4 and 6 as a jurisdictional
wetland areas. Only WET 2 is free from irrigation influence and appears to have a clear
subsurface connection to the Colorado River.
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References
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe, 1979. Classification of wetlands
and deepwater habitats of the United States. U.S. Fish and Wildlife Service.
FWS/OBS-79 Washington, D.C.
Culver, D. and J. Lemly. Colorado Natural Heritage Program. 2013. Field Guide to
Colorado’s Wetland Plants. Printed by Vision Graphics, Loveland, CO. 694 pp.
U.S. Army Corps of Engineers (USACE). 1987. Wetland Delineation Manual.
Environmental Laboratory: Waterways Experiments Station, Vicksburg, MS.
U.S. Army Corps of Engineers (USACE). 2008. Regional Supplement to the Corps of
Engineers Wetland Delineation Manual: Arid West Region (Version 2.0). ed. J.S.
Wakely, R.W. Lichvar, and C.V. Noble. ERDC/EL TR-10-3. Vicksburg, MS:
U.S. Army Engineer Research and Development Center.
U.S. Army Corps of Engineers (USACE). 2016. Western Mountains, Valleys & Coast
2016 Regional Wetland Plant List. Lichvar, R.W., D.L. Banks, W.N. Kirchner,
and N.C. Melvin. The National Wetland Plant List: 2016 wetland ratings.
Phytoneuron 2016:30: 1-17.
U.S. Department of Agriculture. Natural Resource Conservation Service (NRCS). 2010.
Field Indicators of Hydric Soils in the United States, A Guide for Identifying and
Delineating Hydric Soils. Version 7.0.
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Appendix 1: Photographic Documentation
Photo 1: North Hangs Ranch study area facing east along concrete irrigation lateral.
Colorado River is in background, flowing R-L, and I-70 is just out of photo to right.
Photo 2: Bernudy Ditch, facing west, which dissects study area from east to west.
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Photo 3: Study pit SP-1 dug in irrigated field between irrigation laterals, typical of Wann
sandy loams on the study area.
Photo 4: Study pit SP-3 showing redox features and heavy clay-loam material typical of
Halaquepts soils on the study area.
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Appendix 2: Data Sheets
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-1
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief convex
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Wann sandy loam 1-3% slope NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit on south end of T1, clearly upland area; irrigated pasture
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Ulmus pumila 20 Y UPL Number of Dominant Species
That Are OBL, FACW, or FAC 1 (A) 2.
3. Total Number of Dominant
Species Across All Strata 4 (B) 4.
Total Cover 20 Percent of Dominant Species That
Are OBL, FACW, or FAC 25 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover UPL species x 5=
Herb Stratum
Column Totals: (A) (B)
Prevalence Index = B/A =
1. Dactylis glomerata 25 Y FACU Hydrophytic Vegetation Indicators:
2. Bromus inermis 20 Y FACU Dominance Test is > 50%
3. Poa pratensis 20 Y FAC Prevalence Index is < 3.0
4. Taraxacum officinale 10 N FACU Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Medicago sativa 7 N UPL
6. Distichlis spicata 5 N FAC Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 87 20% = 17.4; 50% = 43.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-1
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-2 10YR 3/2 100 Sandy Loam
2-8 10YR 3/3 100 fine sandy loam
8-17 10 YR 3/3 95 2.5YR 3/6 5 C PL fine sandy silt
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators; scattered cobble on surface
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-2
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Wann sandy loam 1-3% slope NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: T1, southern end, between concrete ditch and south of main ditch
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 2 (A) 2.
3. Total Number of Dominant
Species Across All Strata 3 (B) 4.
Total Cover Percent of Dominant Species That
Are OBL, FACW, or FAC 66 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 5 Y FAC Total % Cover of: Multiply by:
2. OBL species x 1= 0
3. FACW species x 2= 0
4. FAC species 45 x 3= 135
5. FACU species x 4= 0
Total Cover 5 UPL species 40 x 5= 200
Herb Stratum
Column Totals: 85 (A) 335 (B)
Prevalence Index = B/A = 3.94
1. Distichlis spicata 40 Y FAC Hydrophytic Vegetation Indicators:
2. Thinopyrum intermedium 30 Y UPL Dominance Test is > 50%
3. Kochia scoparia 10 N UPL Prevalence Index is < 3.0
4. Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5.
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 80 20% = 16; 50% = 40
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks: problem veg--dominace and prevalence index disagree; one FAC spp is deep-rooted non-native on noxious weed list; FAC-neutral
indicates upland
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-6 10YR 3/4 100 Fine sandy loam
6-17 10YR 3/4 85 2.5YR 4/6 15 C PL Fine sandy silt
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators; flood-irrigated pasture
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-3
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform ditch
(hillslope, terrace, etc.)
Local relief concave
(concave, convex, none)
Slope (%) <2
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Halaquepts, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is in the excavated main irrigation ditch; site meets wetland criteria, but is obviously an agricultural
irrigation conveyance
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Elaeagnus angustifolia 10 Y FAC Number of Dominant Species
That Are OBL, FACW, or FAC 5 (A) 2.
3. Total Number of Dominant
Species Across All Strata 5 (B) 4.
Total Cover 10 Percent of Dominant Species That
Are OBL, FACW, or FAC 100 (A/B)
Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 15 Y FAC Total % Cover of: Multiply by:
2. Tamarix parviflora 5 Y FAC OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover 20 UPL species x 5=
Herb Stratum Column Totals: (A) (B)
Prevalence Index = B/A =
1. Juncus arcticus 40 Y FACW Hydrophytic Vegetation Indicators:
2. Asclepias speciosa 20 Y FAC Dominance Test is > 50%
3. Carex aquatilis 10 N OBL Prevalence Index is < 3.0
4. Carduus nutans 8 N FACU Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Thinopyrum intermedium 5 N UPL
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 83 20% = 16.6; 50% = 41.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-3
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-6 7.5YR 3/2 90 2.5YR 4/6 10 C PL silty clay loam
6-12 7.5YR 3/2 60 2.5YR 4/6 20 C PL silty clay loam
6-12 " " Gley 1 3/N 20 D M silty clay loam
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: pit is in a major irrigation ditch/excavated and ~ 6' deep
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) 10 (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: hydrology appears to be from irrig. headgate; may need hydrology study to determine any river influence
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-4
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Torrifluvents, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is on north end of T-1 in dry, mature cottonwood gallery; many dead-standing trees
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Populus angustifolia 40 Y FACW Number of Dominant Species
That Are OBL, FACW, or FAC 3 (A) 2. Populus fremontii 30 Y NI
3. Total Number of Dominant
Species Across All Strata 6 (B) 4.
Total Cover 70 20% = 14; 50% = 35 Percent of Dominant Species That
Are OBL, FACW, or FAC 50 (A/B)
Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 35 Y FAC Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species 40 x 2= 80
4. FAC species 65 x 3= 195
5. FACU species 31 x 4= 124
Total Cover 35 UPL species 25 x 5= 125
Herb Stratum
Column Totals: 161 (A) 524 (B)
Prevalence Index = B/A = 3.25
1. Poa pratensis 20 Y FAC Hydrophytic Vegetation Indicators:
2. Dactylis glomerata 18 Y FACU Dominance Test is > 50%
3. Thinopyron intermedium 15 Y UPL Prevalence Index is < 3.0
4. Distichlis spicata 10 N FAC Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Cynoglossum officinale 10 N UPL
6. Carduus nutans 8 N FACU Problematic Hydrophytic Vegetation1 (Explain)
7. Carduus acanthoides 5 N FACU
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 86 20% = 17.2; 50% = 43
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks: herbaceous layer indicates upland as does FAC-neutral; only FACW spp is deep-rooted, mature trees, many dead-standing
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-4
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-2 10YR 3/3 100 silty loam
2-12 10YR 3/3 100 fine sandy loam, gravels/cobbles deep
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-5
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Wann sandy loam 1-3% slopes NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: pit on south end of T-2 in flood-irrigated pasture, below concrete ditch and lateral
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 1 (A) 2.
3. Total Number of Dominant
Species Across All Strata 3 (B) 4.
Total Cover 20% = ; 50% = Percent of Dominant Species That
Are OBL, FACW, or FAC 33 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover UPL species x 5=
Herb Stratum Column Totals: (A) (B)
Prevalence Index = B/A =
1. Dactylis glomerata 25 Y FACU Hydrophytic Vegetation Indicators:
2. Bromus inermis 20 Y FACU Dominance Test is > 50%
3. Poa pratensis 20 Y FAC Prevalence Index is < 3.0
4. Taraxacum officinale 10 N FACU Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Distichlis spicata 8 N FAC
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 83 20% = 16.6; 50% = 41.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks: clearly upland
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-5
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-2 10YR 3/2 100 sandy loam
2-12 10YR 3/3 100 fine sandy loam
12-17 10YR 3/3 96 2.5YR 3/6 4 C PL fine sany loam, some gravels
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-6
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief concave
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Wann sandy loam 1-3% slopes NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: pit in flood irrigated field below 2nd lateral
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 1 (A) 2.
3. Total Number of Dominant
Species Across All Strata 2 (B) 4.
Total Cover 20% = ; 50% = Percent of Dominant Species That
Are OBL, FACW, or FAC 50 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species 25 x 2= 50
4. FAC species 50 x 3= 150
5. FACU species x 4=
Total Cover UPL species 30 x 5= 150
Herb Stratum Column Totals: 105 (A) 350 (B)
Prevalence Index = B/A = 3.33
1. Distichlis spicata 50 Y FAC Hydrophytic Vegetation Indicators:
2. Thinopyrum intermedium 30 Y UPL Dominance Test is > 50%
3. Agrostis stolonifera 25 N FACW Prevalence Index is < 3.0
4. Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5.
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 105 20% = 21; 50% = 52.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-6
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-1 10YR 2/1 100 loam
1-4 10YR 5/3 100 fine sandy loam
4-15 10YR 3/3 90 2.5YR 4/6 10 C PL fine sandy silt
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-7
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief convex
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Torrifluvents, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: pit on central T-2, somewhat elevated bench just south of main irrigation canal
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 1 (A) 2.
3. Total Number of Dominant
Species Across All Strata 3 (B) 4.
Total Cover 20% = ; 50% = Percent of Dominant Species That
Are OBL, FACW, or FAC 33 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover UPL species x 5=
Herb Stratum Column Totals: (A) (B)
Prevalence Index = B/A =
1. Distichlis spicata 40 Y FAC Hydrophytic Vegetation Indicators:
2. Thinopyrum intermedium 30 Y UPL Dominance Test is > 50%
3. Kochia scoparia 20 Y UPL Prevalence Index is < 3.0
4. Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5.
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 90 20% = 18; 50% = 45
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-7
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-10 10YR 3/4 100 fine sandy loam
10-16 10YR 3/4 95 2.5YR 4/6 5 C PL sandy loam
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 4-20-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-8
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Torrifluvents, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is on north end of T-2 on a broad bench, but well above river
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Populus angustifolia 40 Y FACW Number of Dominant Species
That Are OBL, FACW, or FAC 6 (A) 2. Elaeagnus angustifolia 40 Y FAC
3. Total Number of Dominant
Species Across All Strata 7 (B) 4.
Total Cover 80 20% = 14; 50% = 35 Percent of Dominant Species That
Are OBL, FACW, or FAC 86 (A/B)
Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 35 Y FAC Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species 58 x 2= 116
4. FAC species 110 x 3= 330
5. FACU species 7 x 4= 28
Total Cover 35 UPL species 15 x 5= 75
Herb Stratum
Column Totals: 190 (A) 549 (B)
Prevalence Index = B/A = 2.88
1. Poa pratensis 20 Y FAC Hydrophytic Vegetation Indicators:
2. Juncus arcticus 18 Y FACW Dominance Test is > 50%
3. Thinopyron intermedium 15 Y UPL Prevalence Index is < 3.0
4. Distichlis spicata 15 Y FAC Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Carduus nutans 7 N FACU
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 75 20% = 15; 50% = 37.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks: herbaceous layer marginal; deep-rooted trees drive dominance test
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-8
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-2 10YR 3/3 100 silty loam
2-12 10YR 3/3 100 fine sandy loam, gravels/cobbles deeper
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 5-15-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-9
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Wann sandy loam 1-3% slope NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: T3, south end irrig. pasture below lateral ditch; ditch wet and irrig. plastic obviously moved recently
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 1 (A) 2.
3. Total Number of Dominant
Species Across All Strata 4 (B) 4.
Total Cover Percent of Dominant Species That
Are OBL, FACW, or FAC 25 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover UPL species x 5=
Herb Stratum Column Totals: (A) (B)
Prevalence Index = B/A =
1. Bromus inermis 25 Y FACU Hydrophytic Vegetation Indicators:
2. Dactylis glomerata 25 Y FACU Dominance Test is > 50%
3. Poa pratensis 20 Y FAC Prevalence Index is < 3.0
4. Phleum pratense 20 Y FACU Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Taraxacum officinale 10 N FACU
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 80 20% = 20; 50% = 50
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-9
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-3 10YR 3/2 100 loam
3-10 10YR 3/3 100 Fine sandy loam
10-17 10YR 3/3 98 2.5YR 4/6 2 C PL fine sandy loam
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators; flood-irrigated pasture
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) 11 (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: Pasture has clearly been flood irrigated within the past week; water on different field to east now; saturation
in this case is not an indicator
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 5-15-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-10
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform swa;e
(hillslope, terrace, etc.)
Local relief concave
(concave, convex, none)
Slope (%) <1
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Halaquepts, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is in low swale adjacent to main irrig. ditch; unclear if natural feature or excavated, but much deeper
than surrounding area; obviously receives irrig. conveyance water, but possible river connection?
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Elaeagnus angustifolia 10 Y FAC Number of Dominant Species
That Are OBL, FACW, or FAC 4 (A) 2.
3. Total Number of Dominant
Species Across All Strata 4 (B) 4.
Total Cover 10 Percent of Dominant Species That
Are OBL, FACW, or FAC 100 (A/B)
Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 15 Y FAC Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover 15 UPL species x 5=
Herb Stratum Column Totals: (A) (B)
Prevalence Index = B/A =
1. Typha latifolia 70 Y OBL Hydrophytic Vegetation Indicators:
2. Scirpus acutus 30 Y OBL Dominance Test is > 50%
3. Phalaris arundinacea 10 N OBL Prevalence Index is < 3.0
4. Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5.
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 110 20% = 22; 50% = 55
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-10
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-5 7.5YR 3/2 90 2.5YR 4/6 10 C PL silty clay loam
5-12 7.5YR 3/2 60 2.5YR 4/6 20 C PL clay
5-12 " 40 Gley 1 3/N 20 D M clay
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: clay
Depth (inches): 5
Hydric Soil Present?
Yes No
Remarks: heavy clay layer is notable change from most other sampling points
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches) 2
Saturation Present? Yes No Depth (inches) 0 (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: hydrology appears to be from irrig. headgate; may need hydrology study to determine any river influence
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 5-15-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-11
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <2
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Torrifluvents, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is north of main irrig. ditch on T-3, west side of property
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Elaeagnus angustifolia 40 Y FAC Number of Dominant Species
That Are OBL, FACW, or FAC 5 (A) 2.
3. Total Number of Dominant
Species Across All Strata 6 (B) 4.
Total Cover 40 20% = 14; 50% = 35 Percent of Dominant Species That
Are OBL, FACW, or FAC 83 (A/B) Sapling/Shrub Stratum Prevalence Index worksheet
1. Elaeagnus angustifolia 20 Y FAC Total % Cover of: Multiply by:
2. OBL species x 1=
3. FACW species 18 x 2= 36
4. FAC species 93 x 3= 279
5. FACU species 10 x 4= 40
Total Cover 20 UPL species 15 x 5= 75
Herb Stratum
Column Totals: 136 (A) 430 (B)
Prevalence Index = B/A = 3.16
1. Poa pratensis 18 Y FAC Hydrophytic Vegetation Indicators:
2. Juncus arcticus 18 Y FACW Dominance Test is > 50%
3. Thinopyron intermedium 15 Y UPL Prevalence Index is < 3.0
4. Distichlis spicata 15 Y FAC Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5. Carduus nutans 10 N FACU
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 76 20% = 15.2; 50% = 38
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks: dominance and prevalence tests disagree; herbaceous layer marginal; deep-rooted trees drive dominance test
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-11
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-5 10YR 3/3 100 silty loam
5-16 10YR 3/3 100 fine sandy loam, gravels/cobbles deeper
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
WETLAND DETERMINATION DATA FORM - Arid West Region
Project/Site Hangs Ranch City/County Silt/Garfield Sampling Date 5-15-20
Applicant/Owner Western Slope Materials State CO Sampling Point SP-12
Investigator S. Dahmer Section, Township, Range Sec 9, T6S R92W
Landform terrace
(hillslope, terrace, etc.)
Local relief none
(concave, convex, none)
Slope (%) <2
Datum
Subregion (LRR) D Lat. Long.
Soil Map Unit Name Torrifluvents, nearly level NWI Classification
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in remarks)
Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology significantly disturbed? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? Yes No (If needed, explain any answers in Remarks)
SUMMARY OF FINDINGS – Attach site map showing point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Remarks: Pit is on north end of T-3, west side of property, bench well elevated above river
VEGETATION
Tree Stratum (Use scientific names)
Absolute
% Cover
Dominant
Species?
Indicator
Status Dominance Test worksheet
1. Number of Dominant Species
That Are OBL, FACW, or FAC 0 (A) 2.
3. Total Number of Dominant
Species Across All Strata 5 (B) 4.
Total Cover 20% = ; 50% = Percent of Dominant Species That
Are OBL, FACW, or FAC 0 (A/B)
Sapling/Shrub Stratum Prevalence Index worksheet
1. Chrysothamnus nauseosus 20 Y UPL Total % Cover of: Multiply by:
2. Artemisia tridentata 5 Y UPL OBL species x 1=
3. FACW species x 2=
4. FAC species x 3=
5. FACU species x 4=
Total Cover 25 20% = 5 ; 50% = 12.5 UPL species x 5=
Herb Stratum
Column Totals: (A) (B)
Prevalence Index = B/A =
1. Bromus tectorum 15 Y UPL Hydrophytic Vegetation Indicators:
2. Thinopyrum intermedium 12 Y UPL Dominance Test is > 50%
3. Carduus nutans 10 Y FACU Prevalence Index is < 3.0
4. Morphological Adaptations1 (Provide supporting
. data in Remarks or on a separate sheet) 5.
6. Problematic Hydrophytic Vegetation1 (Explain)
7.
8. 1 Indicators of hydric soil and wetland hydrology must
be present. Total Cover 37 20% = 7.4; 50% = 18.5
Woody Vine Stratum
1. Hydrophytic Vegetation Present?
Yes No
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Remarks:
US Army Corps of Engineers Arid West – Version 11-1-2006
SOIL Sampling Point SP-12
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)
Matrix .
Color (moist) %
Redox Features .
Color (moist) % Type1 Loc2
Texture Remarks
0-17 10YR 3/3 100 sandy loam, gravels mixed
1Type C=Concentration D=Depletion RM=Reduced Matrix 2Location PL=Pore Lining RC= Root Channel M= Matrix
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (A1)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5) (LRR C)
1 cm Muck (A9) (LRR D)
Depleted below dark surface (A11)
Thick Dark Surface (A12)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Sandy Redox (SS)
Stripped Matrix (SS)
Loamy Mucky Mineral (F1)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Vernal Pools (F9)
Indicators for Problematic Hydric Soils3
1 cm Muck (A9) (LRR C)
2 cm Muck (A10) (LRR B)
Reduced Vertic (F18)
Red Parent Material (TF2)
Other (Explain in remarks)
3Indicators of hydrophytic vegetation and
wetland hydrology must be present.
Restrictive Layer (If present):
Type: none
Depth (inches):
Hydric Soil Present?
Yes No
Remarks: no indicators
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (any one indicator is sufficient)
Secondary Indicators (2 or more required)
Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine)
High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine)
Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine)
Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10)
Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2)
Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Thin Muck Surface (C7)
Surface Soil Cracks (B6) Recent Iron Reduction in Plowed Soils (C6) Crayfish Burrows (C8)
Iundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Saturation Visible on Aerial Imagery (C9)
Water-Stained Leaves (B9) Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Field Observations:
Wetland Hydrology Present
Yes No
Surface Water Present? Yes No Depth (inches)
Water Table Present? Yes No Depth (inches)
Saturation Present? Yes No Depth (inches) (includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks: no indicators
US Army Corps of Engineers Arid West – Version 11-1-2006
Page 14 of 18
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Appendix 3: Map Exhibits