HomeMy WebLinkAbout2908 S TIMBERLINE RD MULTI-FAMILY DWELLINGS - PDP210011 - SUBMITTAL DOCUMENTS - ROUND 1 - ECS REPORT
TECHNICAL MEMORANDUM
To: David Karimi
Tetrad Property Group
1730 South College Avenue, Unit 200
Fort Collins, Colorado 80525
From: Clint Hinebaugh, Environmental Specialist
Date: May 17, 2021
Re: Timberline Housing Ecological Characterization Study
INTRODUCTION
SWCA Environmental Consultants (SWCA), on behalf of Tetrad Property Group, conducted a biological
resources desktop analysis and field survey to identify ecological characteristics for the proposed
development of 2908 South Timberline Road in Larimer County, Colorado (project). Based on the
conceptual review, submitted to the City of Fort Collins (City), the project will consist of seven, three-
story buildings ranging from 24 to 36 dwelling units each with a total of 180 dwelling units. The proposed
structures will orient toward a street-like private drive that bisects the Timberline Church property.
Parking will be located within auto courts with overflow parking permitted within the adjacent church
property. Additionally, a stormwater detention pond will be constructed to accommodate surface water
runoff from the proposed development.
An ecological characterization study (ECS) for the project is required as part of the development plan due
to its proximity to City-inventoried natural habitats and features (500 feet). On April 19, 2021, SWCA
spoke with Kelly Smith, the Senior Environmental Planner for the City, to discuss the project and she
confirmed that an abbreviated ECS memorandum would be acceptable.
SITE DESCRIPTION
The proposed multi-housing development consists of approximately 9.0 acres and will be situated along
the southeastern boundary of the existing Timberline Church property.
Clint Hinebaugh (SWCA Environmental Specialist) visited the site on April 29, 2021 and conducted a
pedestrian field survey for the project (parcel numbers 8729226901, 8729225905, 8729225901,
8729225902, and 8729225904) (project area). SWCA expanded the field survey onto City-owned land
(parcel number 8729200918) to delineate the boundary of the wetland/top of bank and riparian corridor
associated with the Foothills Channel. Binoculars were used to survey for raptor nests within 500 feet of
the project area. Maps are provided in Appendix A.
Timberline Housing Ecological Characterization Study
2
ECOLOGICAL CHARACTERIZATION
The following sections relating to the ecological characterization of the project area are summarized
based on guidance from the City regarding an abbreviated ECS and in accordance with Section 3.4.1
(D)(1) of the Land Use Code (City of Fort Collins 2021).
Existing Vegetation
Native Trees and Other Native Vegetation
Although most of the vegetation within the project area is non-native and associated with existing human
disturbance, a few native tree and plant species were observed. The native species were largely either
planted by the Timberline Church or were located adjacent to the Foothills Channel riparian corridor. A
list of the native species identified is included in Table 1, and the location of native shrubs is illustrated in
the maps in Appendix A (Figure A-3). For detailed information related to native trees identified within
the project area, refer to the Existing Tree Removal Feasibility Letter and/or Landscape Plan, prepared by
Norris Design and submitted with the initial development application.
Table 1. Native Trees and Vegetation Observed within the Project Area
Common Name Scientific Name Growth Habit
Narrowleaf cottonwood Populus angustifolia Tree
Ponderosa pine Pinus ponderosa Tree
Rocky Mountain maple Acer glabrum Tree/shrub
Blue spruce Picea pungens Tree
Western wheatgrass Pascopyrum smithii Graminoid
Showy milkweed* Asclepias speciose Forb
Reed canarygrass* Phalaris arundinacea Graminoid
Prairie cordgrass* Spartina pectinata Graminoid
Coyote willow* Salix exigua Shrub
Field sedge Carex praegracilis Graminoid
*Only observed outside of the project area along the Foothills Channel.
Non-Native Vegetation and Noxious Weeds
Upland areas within the project area are dominated by smooth brome (Bromus inermis), a non-native
species. Other non-native species observed during the field survey included Kentucky bluegrass (Poa
pratensis), prickly lettuce (Lactuca serriola), common dandelion (Taraxacum officinale), and curly dock
(Rumex crispus), which provide limited ecological function (shading, wildlife forage, bank stabilization).
Noxious weeds such as field bindweed (Convolvulus arvensis) and downy brome (Bromus tectorum) are
interspersed throughout disturbed uplands. These species were not mapped due to the frequency of
occurrences and limited population densities. Both species are designated List C noxious weeds in
Colorado but do not require weed management or control by either the State or Larimer County (Colorado
Department of Agriculture 2020).
Timberline Housing Ecological Characterization Study
3
Aquatic Resources
Wetland and Non-Wetland Waters
SWCA conducted a desktop review to identify the potential for aquatic resources within the project area.
Based on a desktop review of National Wetlands Inventory (NWI) data, National Hydrography Database
(NHD) maps, aerial imagery, and topographic mapping, no aquatic resources were identified within the
project area (U.S. Geological Survey 2016, U.S. Fish and Wildlife Service 2019).
The absence of aquatic resources within the project area, including wetlands, perennial and ephemeral
streams, irrigation ditches, and other non-wetland waters, was confirmed during the field survey. Two
human-made stormwater drainage features or swales were identified within the project area; however,
these features are dominated by weedy upland species and failed to meet the necessary wetland indicators
(i.e., wetland hydrology, hydric soils, and hydrophytic vegetation community).
Special Habitat Feature: Foothills Channel and the Associated Riparian Corridor
To establish the buffer zone associated with the Foothills Channel and the associated riparian corridor,
SWCA implemented a three-step phased approach.
1. SWCA completed a formal wetland delineation using the methods provided in the Corps of
Engineers Wetlands Delineation Manual (USACE 1987) and the Regional Supplement to the
Corps of Engineers Wetlands Delineation Manual: Great Plains Region (Version 2.0) (USACE
2010) to the determine the wetland-upland boundary.
2. SWCA identified the top of bank associated with the channel. The slopes of this feature are
gradual and vegetated by smooth brome. In most instances the channel is incised 2 to 3 feet from
the bank and bounded by coyote willow (Salix exigua) and reed canarygrass (Phalaris
arundinacea).
3. In locations where trees within the riparian corridor extended outside of the delineated wetland
boundary or top of bank, SWCA mapped the tree canopy cover to establish the boundary.
Approximately 0.2 acres of riparian corridor adjacent to the Foothills Channel were mapped
within the project area.
Based on this approach, SWCA established a 50-foot natural habitat zone buffer from delineated features
as shown in Appendix A (Figure A-3). Representative photographs are provided in Appendix B and
wetland determination forms are provided in Appendix C.
Wildlife
General Wildlife
The portions of the project area that are proposed for development are dominated by non -native
herbaceous uplands and provides limited suitable wildlife habitat. During the April 2021 field survey,
SWCA identified cottontail rabbit (Sylvilagus sp.), Eurasian collared dove (Streptopelia decaocto), and
common raven (Corvus corax) within the project area. The riparian corridor that borders the southern end
of the project area, provides the shrubs and trees required for a structurally complex habitat that is
valuable to a diverse range of species, and likely provides suitable habitat for general wildlife in the area.
Where feasible, the current project design includes a 50-foot setback from the riparian corridor; therefore,
the proposed development should not result in a loss of general wildlife habitat or minimize the
functioning of Foothills Channel as a movement corridor.
Timberline Housing Ecological Characterization Study
4
Sensitive and Specially Valued Species
SWCA reviewed and analyzed the likelihood for federally listed species to occur in the project area. The
federally listed species for the project area (U.S. Fish and Wildlife Service [USFWS] 2021) are
summarized in Table 2. Based on the observations made during the field survey, it was determined that
the site does not provide suitable habitat for any of the listed species, and there is no potential for their
occurrence.
Table 2. Federally Listed Species for Larimer County and Their Potential to Occur
Common Name (Scientific Name) Status* Potential to Occur
Mammals
Canada lynx (Lynx canadensis) Threatened No potential to occur
Preble’s meadow jumping mouse (Zapus hudsonius preblei) Threatened No potential to occur
Birds
Eastern black rail (Laterallus jamaicensis ssp. Jamaicensis) Threatened No potential to occur
Piping plover (Charadrius melodus) Threatened No potential to occur
Whooping crane (Grus americana) Endangered No potential to occur
Fishes
Greenback cutthroat trout (Oncorhynchus clarkii stomias) Threatened No potential to occur
Pallid sturgeon (Scaphirhynchus albus) Threatened No potential to occur
Flowering Plants
Ute ladies’-tresses (Spiranthes diluvialis) Threatened No potential to occur
Western prairie fringed orchid (Platanthera praeclara) Threatened No potential to occur
Migratory Birds and Raptors
The USFWS protects most avian species under the Migratory Bird Treaty Act (MBTA). The MBTA
makes it illegal for anyone to take, possess, import, export, transport, sell, purchase, barter, or offer for
sale any migratory bird or the parts, nests, or eggs of such a bird except under the terms of a valid permit
issued by the USFWS.
Passerine bird species associated with open land in Colorado include meadow lark (Sturnella neglecta),
horned lark (Eremophila alpestris), mourning dove (Zenaida macroura), Eurasian collared dove,
sparrows, warblers, and others. No migratory bird nests were observed in the project area.
Several species of raptors could potentially use the project area, including red-tailed hawk (Buteo
jamaicensis), Cooper’s hawk (Accipiter cooperii), prairie falcon (Falco mexicanus), Swainson's hawk
(Buteo swainsoni), northern harrier (Circus cyaneus), and some species of owls. No raptor nests were
observed within 500 feet of the project area.
Recommended Mitigation Measures
A forestry tree inventory was conducted on April 29, 2021, to obtain information related to trees within
the project area and mitigation requirements. For additional information related to the forestry tree
inventory, see the Existing Tree Removal Feasibility Letter and/or Landscape Plan, prepared by Norris
Design and submitted with the initial development application.
The City Environmental Planning Department will require mitigation for the native multi-stem
shrubs/trees that were identified within the project area. These shrubs/trees will be impacted by the
Timberline Housing Ecological Characterization Study
5
project but were omitted from the previous tree inventory due to their size. Based on the time of year the
field survey was conducted (early in the growing season), SWCA and the City were unable to accurately
determine the shrub species, however the number of individuals are listed in Table 3 and locations are
illustrated in Appendix A (Figure A-3).
Table 3. Multi-Stem Shrubs Identified that will Require Mitigation
ID Species Number of
Individuals
Shrub01 Unknown 1
Shrub02 Unknown 5
Shrub03 Unknown 3
Shrub04 Unknown 3
Shrub05 Unknown 2
Shrub06 Unknown 3
Approximately .60 acre of the natural habitat zone buffer extends into the project area. All disturbance
within the buffer would occur in previously disturbed non-native uplands. Additionally, the proposed
development has been designed to preserve the riparian corridor and enhance connectivity to the
Rendezvous Trail for recreational purposes for residents of the surrounding area.
In accordance with Section 3.2.4 (D)(6) of the Land Use Code, the project, including proposed parking
and street lighting, should be designed to prevent light spillage to the Foothills Channel riparian corridor.
The detention pond should be designed to enhance ecological value. Where practicable, natural vegetation
should be established. Once reclamation is complete, the detention pond would not only be more
aesthetically pleasing for residents and Rendezvous Trail users, but also improve water quality and
general wildlife habitat.
Suitable raptor nesting habitat is present along the Foothills Channel riparian corridor. Although no raptor
nests were identified during the April 2021 field survey, raptor nest surveys should be performed prior to
surface-disturbing activities if construction occurs during the nesting season to determine if any new nests
have become established and/or are active. If an active raptor nest is identified, the project should adhere
to the buffer zones and seasonal restrictions recommended by Colorado Parks and Wildlife (2020), that
are listed below.
• Ferruginous hawk (Buteo regalis): 0.50-mile buffer from February 1 through July 15
• Red-tailed hawk: 0.33-mile buffer from February 15 through July 15
• Swainson’s hawk: 0.25-mile buffer from April 1 through July 15
Additionally, if tree removal or construction is to occur during migratory bird nesting season (February 1–
July 31), SWCA recommends pre-construction nest surveys to identify and avoid impacts to nesting
migratory birds. If active nests are found, the City will coordinate with relevant state and federal
representatives to determine whether additional restrictions on tree removal and construction apply.
Timberline Housing Ecological Characterization Study
6
CONCLUSION AND RECOMMENDATIONS
Based on the results of the desktop analysis and field survey for ecological characteristics and the
recommended mitigation measures, it is SWCA’s professional opinion that natural habitats and important
ecological resources are unlikely to be adversely impacted by the proposed development. Any changes to
the currently proposed project implementation plan or schedule should be communicated to SWCA to re-
evaluate the potential for impacts.
Timberline Housing Ecological Characterization Study
7
LITERATURE CITED
City of Fort Collins. 2021. City of Fort Collins Land Use Code. Available at:
https://library.municode.com/co/fort_collins/codes/land_use?nodeId=CITY_FORT_COLLINS_
LAND_USE_CODE. Accessed May 2021.
Colorado Department of Agriculture. 2020. Colorado Department of Agriculture. 2020. Noxious Weed
Species. Available at: https://colorado.gov/pacific/agconservation/noxious-weed-species.
Accessed May 2021.
Colorado Parks and Wildlife (CPW). 2020. Recommended Buffer Zones and Seasonal Restrictions for
Colorado Raptors. Available at:
http://cpw.state.co.us/Documents/WildlifeSpecies/LivingWithWildlife/
RaptorBufferGuidelines2020.pdf. Accessed April 2021.
U.S. Army Corps of Engineers (USACE). 1987. Corps of Engineers Wetland Delineation Manual.
Technical Report Y-87-1. Vicksburg, Mississippi: U.S. Army Engineers Waterways Experiment
Station.
———. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great
Plains Region (Version 2.0), edited by J.S. Wakeley, R.W. Lichvar, and C.V. Noble. ERDC/EL
TR-10-1. Vicksburg, Mississippi: U.S. Army Engineer Research and Development Center.
U.S. Fish and Wildlife Service (USFWS). 2021. IPaC - Information for Planning and Consultation
System. Available at: http://ecos.fws.gov/ipac/. Accessed April 2021.
———. 2019. National Wetlands Inventory Data. Available at: http://www.fws.gov/wetlands/data/Data-
Download.html. Accessed May 2021.
U.S. Geological Survey (USGS). 2016. Hydrography – Get NHD Data. Available at:
http://nhd.usgs.gov/data.html. Accessed April 2021.
APPENDIX A
Maps
Timberline Housing Ecological Characterization Study
A-1
Figure A-1. Project location.
Timberline Housing Ecological Characterization Study
A-2
Figure A-2. Desktop-delineated features.
Timberline Housing Ecological Characterization Study
A-3
Figure A-3. Field-delineated features.
APPENDIX B
Site Photographs
Timberline Housing Ecological Characterization Study
B-1
Figure B-1. Overview of the project area, facing north. Note disturbed non-native uplands.
Figure B-2. Overview of project area, facing west. Note smooth brome-dominated uplands.
Timberline Housing Ecological Characterization Study
B-2
Figure B-3. Overview of human-made stormwater drainage swale, facing north. Note that it is
vegetated in smooth brome.
Figure B-4. Overview of human-made stormwater drainage feature, facing southwest.
Timberline Housing Ecological Characterization Study
B-3
Figure B-5. Overview of human-made stormwater drainage feature. Note the feature is dominated
by uplands with an unauthorized path connecting the Rendezvous Trail to the Timberline Church
parking lot.
Figure B-6. Close-up of upland soil pit (DP01). This is in the human-made stormwater drainage
feature.
Timberline Housing Ecological Characterization Study
B-4
Figure B-7. Overview of the Foothills Channel. This feature is located outside the project area.
Note the gradual slopes, incised channel, and riparian corridor.
Figure B-8. Overview of wetland soil pit (DP03). This is located along the Foothills Channel.
Timberline Housing Ecological Characterization Study
B-5
Figure B-9. Overview of the upland soil pit (DP02).
Figure B-10. Overview of the Rendezvous Trail, facing southwest.
Timberline Housing Ecological Characterization Study
B-6
Figure B-11. Example of where the riparian corridor extends outside of the wetland boundary/top
of bank.
Figure B-12. Example of the multi-stem shrubs (unknown species) that were mapped within the
project area.
APPENDIX C
Wetland Determination Forms
Project/Site:
Applicant/Owner: State:
Investigator(s):and
Landform (hillslope, terrace, etc.):
Subregion (LRR):Lat:Datum:
Soil Map Unit Name:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (if no, explain in Remarks.)
,Soil ,or Hydrology significantly disturbed?Are "Normal Circumstances" present?Yes No
Are Vegetation ,Soil ,or Hydrology naturally problematic?(If needed, explain any answers in Remarks.)
Hydrophytic Vegetation Present?Yes No
Hydric Soil Present?Yes No Is the Sampled Area
Wetland Hydrology Present?Yes No within a Wetland?Yes No
Remarks:
Dominance Test worksheet:
(Plot size:30 ft.)Number of Dominant Species
1.That Are OBL, FACW, or FAC: (A)
2.
3.Total Number of Dominant
4.Species Across All Strata: (B)
= Total Cover
Sapling/Shrub Stratum (Plot size:15 ft.)Percent of Dominant Species
1.That Are OBL, FACW, or FAC: (A/B)
2.
3.Prevalence Index Worksheet:
4.
5.OBL species x 1 =
= Total Cover FACW species x 2 =
Herb Stratum (Plot size:5 ft.)FAC species x 3 =
1.FACU species x 4 =
2.UPL species x 5 =
3.Column Totals:(A)(B)
4.Prevalence Index = B/A =
5.
6.Hydrophytic Vegetation Indicators:
7.1 - Rapid Test for Hydrophytic Vegetation
8.2 - Dominance Test is >50%
9.3 - Prevalence Index is ≤ 3.01
10.4 - Morphological Adaptations1 (Explain)
= Total Cover Problematic Hydrophytic Vegetation1 (Explain)
Woody Vine Stratum (Plot size:30 ft.)1Indicators of hydric soil and wetland hydrology must
1.be present, unless disturbed or problematic.
2.
= Total Cover
% Bare Ground in Herb Stratum Yes No
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
10
Sampling Date:April 29, 2021
Tetrad Property Group CO
WETLAND DETERMINATION DATA FORM - Great Plains Region
Sampling Point:DP01
Section, Township, Range:
County:Timberline Housing ECS
Section 29, Township 7N, Range 68W
Larimer
Hydrophytic
Vegetation
Present?X
No positive indication of hydrophytic vegetation was observed (≥50% of dominant species indexed as FACU or drier).
80
4.21
275
400
0
15
5
20
55
95
X
Dominant Indicator
% cover Species?
None Observed
90
30
15
VEGETATION - Use scientific names of plants.
Tree Stratum
Total % Cover of:
5
None Observed
This point was determined not to be within a wetland due to the lack of hydrophytic vegetation and hydric soils.
1
2
50%
Status
Populus angustifolia 5 Yes FACW
Absolute
No
No
NoAre Vegetation
No
SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc.
X
X
X
XNo
No
NoneNunn clay loam, 0-1 percent
Local relief (concave, convex, none):Human-made drainage
G 40.546114 Long:-105.035361 NAD83
NWI Classification:
Slope (%):Concave
C. Hinebaugh
0-1%
Multiply by:
0
Bromus inermis
FACU
UPL
Rumex crispus 5 No FAC
FACU
Carex praegracilis 10 No FACW
Taraxacum officinale 10 No
55 Yes
Pascopyrum smithii 10 No
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)%%
3/2 98 3/6 2 Evidence of construction activities.
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soils Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
Histosol (A1)Sandy Gleyed Matrix (S4)1 cm Muck (A9) (LRR I, J)
Histic Epipedon (A2)Sandy Redox (S5)Coast Prairie Redox (A16) (LRR F, G, H)
Black Histic (A3)Stripped Matrix (S6)Dark Surface (S7) (LRR G)
Hydrogen Sulfide (A4)Loamy Mucky Mineral (F1)High Plains Depressions (F16)
Stratified Layers (A5) (LRR F)Loamy Gleyed Matrix (F2)(LRR H outside of MLRA 72 & 73)
1 cm Muck (A9) (LRR F, G, H)Depleted Matrix (F3)Reduced Vertic (F18)
Depleted Below Dark Surface (A11) Redox Dark Surface (F6)Red Parent Material (TF2)
Thick Dark Surface (A12)Depleted Dark Surface (F7)Very Shallow Dark Surface (TF12)
Sandy Mucky Mineral (S1)Redox Depressions (F8)Other (Explain in Remarks)
2.5 cm Mucky Peat or Peat (S2) (LRR G, H)High Plains Depressions (F16)3Indicators of hydrophytic vegetation and
5 cm Mucky Peat or Peat (S3) (LRR F)(MLRA 72 & 73 of LRR H)wetland hydrology must be present,
unless disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches): Hydric Soil Present?Yes No
Remarks:
Wetland hydrology Indicators:
Primary Indicators (minimum of one is required; check all that apply)Secondary Indicators (minimum of two required)
Surface Water (A1)Salt Crust (B11)Surface Soil Cracks (B6)
High Water Table (A2)Aquatic Invertebrates (B13)Sparsely Vegetated Concave Surface (B8)
Saturation (A3)Hydrogen Sulfide Odor (C1)X Drainage Patterns (B10)
Water Marks (B1)Dry-Season Water Table (C2)Oxidized Rhizospheres on Living Roots (C3)
Sediment Deposits (B2)Oxidized Rhizospheres on Living Roots (C3)(where tilled)
Drift Deposits (B3)(where not tilled)Crayfish Burrows (C8)
Algal Mat or Crust (B4)Presence of Reduced Iron (C4)Saturation Visible on Aerial Imagery (C9)
Iron Deposits (B5)Thin Muck Surface (C7)X Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (B7)Other (Explain in Remarks)FAC-Neutral Test (D5)
Water-Stained Leaves (B9)Frost-Heave Hummocks (D7) (LRR F)
Field Observations:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches): Wetland Hydrology Present?Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
No positive indication of hydric soils was observed.
A positive indication of wetland hydrology was observed (at least two secondary indicators).
HYDROLOGY
X
X
X >20
N/A
>20
Color (moist)
Matrix
10YR10YR0-16
SOIL DP01
Loamy Clay
Texture
Redox Features
Color (moist)
PL
X
X
Sampling Point:
Remarks
M
Type1 Loc2
Project/Site:
Applicant/Owner: State:
Investigator(s):and
Landform (hillslope, terrace, etc.):
Subregion (LRR):Lat:Datum:
Soil Map Unit Name:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (if no, explain in Remarks.)
,Soil ,or Hydrology significantly disturbed?Are "Normal Circumstances" present?Yes No
Are Vegetation ,Soil ,or Hydrology naturally problematic?(If needed, explain any answers in Remarks.)
Hydrophytic Vegetation Present?Yes No
Hydric Soil Present?Yes No Is the Sampled Area
Wetland Hydrology Present?Yes No within a Wetland?Yes No
Remarks:
Dominance Test worksheet:
(Plot size:30 ft.)Number of Dominant Species
1.That Are OBL, FACW, or FAC: (A)
2.
3.Total Number of Dominant
4.Species Across All Strata: (B)
= Total Cover
Sapling/Shrub Stratum (Plot size:15 ft.)Percent of Dominant Species
1.That Are OBL, FACW, or FAC: (A/B)
2.
3.Prevalence Index Worksheet:
4.
5.OBL species x 1 =
= Total Cover FACW species x 2 =
Herb Stratum (Plot size:5 ft.)FAC species x 3 =
1.FACU species x 4 =
2.UPL species x 5 =
3.Column Totals:(A)(B)
4.Prevalence Index = B/A =
5.
6.Hydrophytic Vegetation Indicators:
7.1 - Rapid Test for Hydrophytic Vegetation
8.2 - Dominance Test is >50%
9.3 - Prevalence Index is ≤ 3.01
10.4 - Morphological Adaptations1 (Explain)
= Total Cover Problematic Hydrophytic Vegetation1 (Explain)
Woody Vine Stratum (Plot size:30 ft.)1Indicators of hydric soil and wetland hydrology must
1.be present, unless disturbed or problematic.
2.
= Total Cover
% Bare Ground in Herb Stratum Yes No
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
C. Hinebaugh Section, Township, Range:
Hillslope Local relief (concave, convex, none):Concave Slope (%):2 to 5%
WETLAND DETERMINATION DATA FORM - Great Plains Region
Timberline Housing ECS County:Larimer Sampling Date:April 29, 2021
Tetrad Property Group CO Sampling Point:DP02
G 40.545625 Long:-105.036287 NAD83
Nunn clay loam, 0-1 percent NWI Classification:None
Are Vegetation No No No X
No No No
SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc.
X
X
X X
This point was determined not to be within a wetland due to the lack of all three wetland criteria.
VEGETATION - Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum % cover Species?Status
None Observed 1
2
Salix exigua 10 Yes FACW 50%
Total % Cover of:Multiply by:
0 0
10 10 20
0 0
Bromus inermis 60 Yes UPL 10 40
Taraxacum officinale 10 No FACU 60 300
80 360
4.50
70
None Observed
Hydrophytic
Vegetation
Present?30 X
No positive indication of hydrophytic vegetation was observed (≥50% of dominant species indexed as FACU or drier).
Section 29, Township 7N, Range 68W
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)%%
3/2 100 —
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soils Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
Histosol (A1)Sandy Gleyed Matrix (S4)1 cm Muck (A9) (LRR I, J)
Histic Epipedon (A2)Sandy Redox (S5)Coast Prairie Redox (A16) (LRR F, G, H)
Black Histic (A3)Stripped Matrix (S6)Dark Surface (S7) (LRR G)
Hydrogen Sulfide (A4)Loamy Mucky Mineral (F1)High Plains Depressions (F16)
Stratified Layers (A5) (LRR F)Loamy Gleyed Matrix (F2)(LRR H outside of MLRA 72 & 73)
1 cm Muck (A9) (LRR F, G, H)Depleted Matrix (F3)Reduced Vertic (F18)
Depleted Below Dark Surface (A11) Redox Dark Surface (F6)Red Parent Material (TF2)
Thick Dark Surface (A12)Depleted Dark Surface (F7)Very Shallow Dark Surface (TF12)
Sandy Mucky Mineral (S1)Redox Depressions (F8)Other (Explain in Remarks)
2.5 cm Mucky Peat or Peat (S2) (LRR G, H)High Plains Depressions (F16)3Indicators of hydrophytic vegetation and
5 cm Mucky Peat or Peat (S3) (LRR F)(MLRA 72 & 73 of LRR H)wetland hydrology must be present,
unless disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches): Hydric Soil Present?Yes No
Remarks:
Wetland hydrology Indicators:
Primary Indicators (minimum of one is required; check all that apply)Secondary Indicators (minimum of two required)
Surface Water (A1)Salt Crust (B11)Surface Soil Cracks (B6)
High Water Table (A2)Aquatic Invertebrates (B13)Sparsely Vegetated Concave Surface (B8)
Saturation (A3)Hydrogen Sulfide Odor (C1)Drainage Patterns (B10)
Water Marks (B1)Dry-Season Water Table (C2)Oxidized Rhizospheres on Living Roots (C3)
Sediment Deposits (B2)Oxidized Rhizospheres on Living Roots (C3)(where tilled)
Drift Deposits (B3)(where not tilled)Crayfish Burrows (C8)
Algal Mat or Crust (B4)Presence of Reduced Iron (C4)Saturation Visible on Aerial Imagery (C9)
Iron Deposits (B5)Thin Muck Surface (C7)Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (B7)Other (Explain in Remarks)FAC-Neutral Test (D5)
Water-Stained Leaves (B9)Frost-Heave Hummocks (D7) (LRR F)
Field Observations:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches): Wetland Hydrology Present?Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
SOIL Sampling Point:DP02
Matrix Redox Features
Color (moist)Color (moist)Type1 Loc2 Texture Remarks
0-16 10YR None ——Loamy Clay
X
No positive indication of hydric soils was observed.
HYDROLOGY
X N/A
X >20
X >20 X
No positive indication of wetland hydrology was observed.
Project/Site:
Applicant/Owner: State:
Investigator(s):and
Landform (hillslope, terrace, etc.):
Subregion (LRR):Lat:Datum:
Soil Map Unit Name:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (if no, explain in Remarks.)
,Soil ,or Hydrology significantly disturbed?Are "Normal Circumstances" present?Yes No
Are Vegetation ,Soil ,or Hydrology naturally problematic?(If needed, explain any answers in Remarks.)
Hydrophytic Vegetation Present?Yes No
Hydric Soil Present?Yes No Is the Sampled Area
Wetland Hydrology Present?Yes No within a Wetland?Yes No
Remarks:
Dominance Test worksheet:
(Plot size:30 ft.)Number of Dominant Species
1.That Are OBL, FACW, or FAC: (A)
2.
3.Total Number of Dominant
4.Species Across All Strata: (B)
= Total Cover
Sapling/Shrub Stratum (Plot size:15 ft.)Percent of Dominant Species
1.That Are OBL, FACW, or FAC: (A/B)
2.
3.Prevalence Index Worksheet:
4.
5.OBL species x 1 =
= Total Cover FACW species x 2 =
Herb Stratum (Plot size:5 ft.)FAC species x 3 =
1.FACU species x 4 =
2.UPL species x 5 =
3.Column Totals:(A)(B)
4.Prevalence Index = B/A =
5.
6.Hydrophytic Vegetation Indicators:
7.1 - Rapid Test for Hydrophytic Vegetation
8.X 2 - Dominance Test is >50%
9.X 3 - Prevalence Index is ≤ 3.01
10.4 - Morphological Adaptations1 (Explain)
= Total Cover Problematic Hydrophytic Vegetation1 (Explain)
Woody Vine Stratum (Plot size:30 ft.)1Indicators of hydric soil and wetland hydrology must
1.be present, unless disturbed or problematic.
2.
= Total Cover
% Bare Ground in Herb Stratum Yes No
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
WETLAND DETERMINATION DATA FORM - Great Plains Region
Timberline Housing ECS County:Larimer Sampling Date:April 29, 2021
Tetrad Property Group CO Sampling Point:DP03
C. Hinebaugh Section, Township, Range:Section 29, Township 7N, Range 68W
Terrace Local relief (concave, convex, none):Concave Slope (%):0 to 1%
G 40.545606 Long:-105.036288 NAD83
Nunn clay loam, 0-1 percent NWI Classification:PEMC
Are Vegetation No No No X
No No No
SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc.
X
X
X X
This point was determined to be within a wetland due to the presence of all 3 wetland criteria.
VEGETATION - Use scientific names of plants.
Absolute Dominant Indicator
Tree Stratum % cover Species?Status
Populus angustifolia 10 Yes FACW 3
3
10
Salix exigua 35 Yes FACW 100%
Total % Cover of:Multiply by:
0 0
35 115 230
0 0
Phalaris arundinacea 60 Yes FACW 0 0
Spartina pectinata 10 No FACW 0 0
115 230
2.00
70
None Observed
Hydrophytic
Vegetation
Present?30 X
A positive indication of hydrophytic vegetation was observed (>50% of dominant species indexed as OBL, FACW, or FAC).
A positive indication of hydrophytic vegetation was observed (Prevalence Index is ≤ 3.0).
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth
(inches)%%
3/2 60 3/6 5
4/2 35
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soils Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3:
Histosol (A1)Sandy Gleyed Matrix (S4)1 cm Muck (A9) (LRR I, J)
Histic Epipedon (A2)Sandy Redox (S5)Coast Prairie Redox (A16) (LRR F, G, H)
Black Histic (A3)Stripped Matrix (S6)Dark Surface (S7) (LRR G)
Hydrogen Sulfide (A4)Loamy Mucky Mineral (F1)High Plains Depressions (F16)
Stratified Layers (A5) (LRR F)Loamy Gleyed Matrix (F2)(LRR H outside of MLRA 72 & 73)
1 cm Muck (A9) (LRR F, G, H)Depleted Matrix (F3)Reduced Vertic (F18)
Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)Red Parent Material (TF2)
Thick Dark Surface (A12)Depleted Dark Surface (F7)Very Shallow Dark Surface (TF12)
Sandy Mucky Mineral (S1)Redox Depressions (F8)Other (Explain in Remarks)
2.5 cm Mucky Peat or Peat (S2) (LRR G, H)High Plains Depressions (F16)3Indicators of hydrophytic vegetation and
5 cm Mucky Peat or Peat (S3) (LRR F)(MLRA 72 & 73 of LRR H)wetland hydrology must be present,
unless disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches): Hydric Soil Present?Yes No
Remarks:
Wetland hydrology Indicators:
Primary Indicators (minimum of one is required; check all that apply)Secondary Indicators (minimum of two required)
Surface Water (A1)Salt Crust (B11)Surface Soil Cracks (B6)
High Water Table (A2)Aquatic Invertebrates (B13)Sparsely Vegetated Concave Surface (B8)
Saturation (A3)Hydrogen Sulfide Odor (C1)Drainage Patterns (B10)
Water Marks (B1)Dry-Season Water Table (C2)Oxidized Rhizospheres on Living Roots (C3)
Sediment Deposits (B2)X Oxidized Rhizospheres on Living Roots (C3)(where tilled)
Drift Deposits (B3)(where not tilled)Crayfish Burrows (C8)
Algal Mat or Crust (B4)Presence of Reduced Iron (C4)Saturation Visible on Aerial Imagery (C9)
Iron Deposits (B5)Thin Muck Surface (C7)X Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (B7)Other (Explain in Remarks)X FAC-Neutral Test (D5)
Water-Stained Leaves (B9)Frost-Heave Hummocks (D7) (LRR F)
Field Observations:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches): Wetland Hydrology Present?Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Great Plains - Version 2.0
SOIL Sampling Point:DP03
Matrix Redox Features
Color (moist)Color (moist)Type1 Loc2 Texture Remarks
0-16 10YR 10YR PL M Loamy Clay
10YR
A positive indication of wetland hydrology was observed (at least one primary indicator).
A positive indication of wetland hydrology was observed (at least two secondary indicators).
X >20
X >20 X
X
A positive indication of hydric soil was observed.
HYDROLOGY
X N/A