HomeMy WebLinkAbout20022451.tiff Savage and Savage
practical solutions for environmental problems
464 West Sumac Court 303 666-7372 telephone
Louisville,Colorado 80027-2227 303 665-6808 facsimile
Weld County Planning Dept.
February 28, 2001
_ 01
Danny Ortiz
Rocky Mountain Consultants lA C C E 1 \ / E D
825 Delaware Avenue, Suite 500 !t G G 1 V
Longmont, Colorado 80501
Re: Preliminary Threatened and Endangered Species Investigation of the Milliken II Site,
Weld County, Colorado
Dear Ms. Ortiz:
On February 26, 2001, we conducted a preliminary site investigation of the Milliken II
property that will be developed for sand and gravel mining. The purpose of the site
investigation was to assess the likelihood of encountering potential critical habitat for
Preble's meadow jumping mice (Zapus hudsonius preblei), Ute ladies'-tresses orchids
(Spiranthes diluvialis), and western burrowing owls (Athene cunicularia).
The site investigation consisted of a pedestrian and vehicle inspection of approximately
283 acres located east of Two Rivers Parkway and along both sides of Weld County
Road 396. The South Platte River forms the property boundary along the majority of the
south and east sides. The Big Thompson River traverses the northwest corner of the site
(see Location Map). The legal description of the site includes the SW ' of Section 4,
SE'/ SE% of Section 5, and the NE% NE' of Section 9, all in Township 4 North, Range
66 West, 6th Prime Meridian, in Weld County, Colorado. Currently, the property has
several land uses including residential, grazing, agriculture (row crops and hay), and oil
and gas production. Adjacent land uses are the same as those found on the property.
Findings of the preliminary site investigation are detailed below. The general location of
any species of special concern potential habitat and potential jurisdictional wetlands are
depicted on the attached map.
Preble's Meadow Jumping Mouse Habitat
The Preble's meadow jumping mouse (Zapus hudsonius preblei) is a federally listed
threatened species which generally occurs near wetlands and water bodies. Currently, the
U.S. Fish and Wildlife Service (USFWS) and USACE are requiring habitat assessment
and/or live-trapping surveys for all projects impacting potential critical Preble's habitat
and those projects within 300 feet of the 100 year floodplain containing Preble's habitat.
The property was evaluated for potential Preble's habitat, based on the current USFWS
guidelines. Preble's habitat is found within patches of coyote willow along the entire
southeast boundary of the property. No trapping survey will be required if the project
will not impact within 300 feet of the outside edge of the 100 year floodplain of the South
EXHIBIT
2002-2451 1 -
Danna Ortiz
Milliken II Site Investigation
page 2
Platte River, or if the USFWS agrees, that based on prior adjacent trapping surveys in the
area, the likelihood of encountering the Preble's mouse is highly unlikely. No Preble's
habitat was found along the banks and margins of the Big Thompson River.
Ute Ladies'-tresses Orchid Habitat
The Ute ladies'-tresses orchid (Spiranthes diluvialis) is a federally listed threatened plant
species characteristically found in wet meadows and alluvial flood plains below 6500 feet
in northern Colorado, southwestern Wyoming, and the Uintah Basin of Utah. Habitat
assessments and/or pedestrian surveys during the blooming period are required for sites
within the South Platte River 100 year floodplain and in characteristic habitat which
includes areas with a seasonally high water table, wet meadows, stream channels,
floodplains, areas with vegetation in the facultative wet or obligate classification, and
jurisdictional wetlands. Potential critical orchid habitat was identified within the riparian
corridor adjacent to the South Platte River, within potential wetlands located on both
sides of the levee that traverses the property, and within wet meadow wetlands located
north of the levee. No orchid habitat was found along the banks and margins of the Big
Thompson River.
Western Burrowing Owl Habitat
The State of Colorado listed the western burrowing owl (Athene cunicularia) as a
threatened species of special concern. While the burrowing owl does not fall under the
protections of the federal Endangered Species Act, it is protected under the federal
Migratory Bird Act and State of Colorado statutes that prohibit the killing of this species.
If the owl is identified, mitigation or avoidance measures may be required. The western
burrowing owl is a summer migratory resident of Colorado, found primarily in grasslands
and mountain parks, usually in or near black-tailed prairie dog or Richardson's ground
squirrel colonies. The owls may also use well-drained steppes, deserts, prairies, and
agricultural lands. The favored habitat is well-grazed, early successional grasslands with
significantly sandy soils. No prairie dog or ground squirrel colonies were observed on
the property. Therefore, it is highly unlikely that western burrowing owls are present.
Discussion and Recommendations
Threatened and Endangered Specks
The western burrowing owl occupies abandoned prairie dog and ground squirrel burrows
on open ground. There were no prairie dog or ground squirrel burrows found on the site,
therefore no western burrowing owl habitat was identified.
Wetland Definitions 02/16/01 Page 2
body of water, then the wetland or water body may be isolated and not subject to Corps
jurisdiction (remember the "may be" above, and I'll explain later). An example of an
isolated non-jurisdictional wetland would be a wet meadow located on a slope that is fed
by a seep with no surface water channel connecting the wet meadow to a perennial
stream downstream. Another example is a small depression within an otherwise dry area
that contains cattails, water, and hydric soils that retains the wetland characteristics
because of a clay bottom. An example where the Corps retains jurisdiction is a cattail
wetland within an old oxbow feature that is surface connected to a perennial stream and
illustrates the three wetland criteria from the cattail wetland to the junction with the
stream. And the Corps is retaining jurisdiction over all ditches that were or remain
natural drainage channels. Man-made ditches that connect to tributary waters are under
Corps jurisdiction.
An issue that has not been clarified to date is the issue of adjacency. This affects those
areas that are not "surface connected" to a tributary interstate water but are adjacent to
such a feature. Typically, that means many of the alluvial features such as flood plains or
terraces. The Corps is awaiting guidance from their solicitors in Washington D.C. on this
issue.
As these definitions of"isolated waters", "surface connected", and "adjacency" have not
been evaluated extensively in the field, interpretations may differ between those of us that
delineate wetlands and the regulatory staff of the Corps. The Corps has suggested a
procedure to protect proponents where there are issues of "isolated waters." In cases
where a proponent believes there is no Corps jurisdiction due to the isolated nature of the
wetlands or waters, the Corps recommends obtaining a concurrence from the Corps
office. Those of you who have worked with us on threatened and endangered species
issues will recognize this process as the same that we go through with U.S Fish and
Wildlife when we obtain concurrence for absence of critical habitat, alleviating the need
for further species specific investigations (those darn mouse trapping surveys). In this
way, the proponents protect themselves from an adverse interpretation later that could
result in enforcement or permitting.
Hopefully, this helps answer those nagging questions, at least temporarily. And yes, as
we look at new sites from now on we will be noting whether in our opinion any of the
waters or wetlands fall under the isolated category. If they appear to, we will be strongly
urging you to pursue the concurrence process described above.
Have a good weekend, and please call or e-mail me (savesavg(¢aol.com) if you have any
questions or scenarios that we might encounter.
Danna Ortiz
Milliken II Site Investigation
page 3
Characteristic potential critical habitat for the Ute ladies'-tresses orchid was identified
within the riparian corridor adjacent to the South Platte River, within wetlands along both
sides of the levee, and within wet meadow wetlands located north of the levee. If impacts
to these areas are anticipated, a pedestrian survey should be conducted during the period
of orchid anthesis (July 15-August 31).
Potential critical habitat for the Preble's meadow jumping mouse was identified along the
South Platte River within patches of coyote willow. No trapping survey will be required
if the project will not impact within 300 feet of the outside edge of the 100 year
floodplain of the South Platte River, or if the USFWS agrees, that based on prior adjacent
trapping surveys in the area, the likelihood of encountering the Preble's meadow jumping
mouse is highly unlikely. Trapping surveys are conducted from June 1 through
September 15.
If we can provide additional information or clarification regarding the preliminary
investigation, please call me at your convenience.
Sincerely,
AiLkirS'14 4‘
Michael S. Sa ge
Vice President
Attachment: General Location and Features Map
Isolated Wetland Memorandum
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Savage and Savage
Memorandum
To: Wetland Clients.
From: Mike Savage t""'
Date: February 16, 2001
Subject: Zen and the Art of Defining "Isolated Wetlands"
File #: Wetland Definitions
Our most frequently asked recent questions and the most troubling have recently been,
"What is an isolated wetland?" and "What impact does the recent U.S. Supreme Court
decision on isolated wetlands have on my projects?" Today while conducting ancillary
research, we had a long and enlightening discussion with Scott Franklin of the U.S. Army
Corps of Engineers, Omaha District, Denver Regulatory Office regarding these very
questions. The following statement reflects the current Denver Regulatory Office
approach to defining "isolated wetlands."
"Based upon the ruling by the Supreme Court in the matter of Solid Waste
Agency of Northern Cook County v. U .S. Army Corps of Engineers, No.99-1178
(January 9, 2001), the Department of the Army's regulatory jurisdiction over
isolated, non-navigable, intrastate waters has been eliminated if the sole nexus to
interstate commerce was use of the waters by migratory birds. Isolated wetlands
are not covered in Section 404 of the Clean Water Act. Wetlands that are surface
connected or adjacent to a river/tributary are waters of the United States. Bed and
bank areas (Other Waters) that connect to a larger river system are also waters of
the United States. If a proposed activity requires work within the above-described
waters of the United States, this office should be notified by a proponent of the
project for proper Department of the Army permits."
This statement from the Corps appears to define "isolated waters" in the following
manner. If the only connection to interstate commerce (the interstate commerce clause
being the legal means for the federal government regulating waters of the United States
contained wholly within a state) was what I lovingly call the "duck test", or use of the
waters by migratory waterfowl that travel interstate, then the Corps no longer has
jurisdiction over these "isolated waters". However, if the waters of the United States (this
includes wetlands) are navigable (a personal watercraft can be floated on them), or are
connected by surface water (a flowing drainage within a channel) to tributary waters
(bodies of water that flow or are located between states), then these areas are waters of
the United States.
Practically speaking, this means that if your project site has wetland areas or areas of
water that are not connected to a larger body of water that is tributary to an interstate
Savage and Savage
practical solutions for environmental problems
464 West Sumac Court 303 666-7372 telephone
Louisville,Colorado 80027-2227 303 665-6808 facsimile
March 14, 2001
Danna Ortiz
Rocky Mountain Consultants
825 Delaware Avenue, Suite 500
Longmont, Colorado 80501
Re: Preliminary Wetland and Threatened and Endangered Species Investigation of
the Milliken I Site, Weld County, Colorado
Dear Ms. Ortiz:
On February 20, 2001, we conducted a preliminary site investigation of the Milliken I site
that will be developed for sand and gravel mining. The purpose of the site investigation
was to assess the likelihood of encountering jurisdictional wetlands and potential critical
habitat for Preble's meadow jumping mice (Zapus hudsonius preblei), Ute ladies'-tresses
orchids (Spiranthes diluvialis), and western burrowing owls (Athene cunicularia).
The site investigation consisted of a pedestrian and vehicle inspection of approximately
205 acres located within the WV2 and NW'ANE'/4 of Section 8, Township 4 North, Range
66 West of the Sixth Prime Meridian, Weld County, Colorado. The property is bounded
by Colorado Highway 60 on the west, a rail line on the north, an elevated levee road on
the northeast, and the South Platte River on the southeast. Currently, the property has
several land uses; residential, grazing, agriculture (row crops and hay), and oil and gas
production. Adjacent land uses are the same as those found on the property. Findings of
the preliminary site investigation are detailed below. The general location of any species
of special concern potential habitat and potential jurisdictional wetlands are depicted on
the attached map.
Waters of the United States
Waters of the United States, regulated by the U.S. Army Corps of Engineers (USACE),
are all waters which were, are, or could be used in interstate commerce; and in Colorado
include (but are not limited to) rivers, streams, ponds, sloughs, and wetlands. The South
Platte River along the southeast boundary of the property was identified as waters of the
United States.
Jurisdictional Wetlands
Regulated jurisdictional wetlands encountered in Colorado include submergent,
emergent, wet meadows, sloughs, surface water drainage ditches, bogs, and potholes.
Omuta Ortiz
Milliken I Site Investigation
page 2
Within the property, potential jurisdictional wetlands were observed along both sides of
the levee traversing the site from southwest to northeast. From our observations, wetland
plant species, standing water, and hummocky soils (all indicators of wetlands) were all
found in these areas.
Preble's Meadow Jumping Mouse Habitat
The Preble's meadow jumping mouse (Zapus hudsonius preblei) is a federally listed
threatened species which generally occurs near wetlands and water bodies. Currently, the
U.S. Fish and Wildlife Service (USFWS) and USACE are requiring habitat assessment
and/or live-trapping surveys for all projects impacting potential critical Preble's habitat
and those projects within 300 feet of the 100 year floodplain containing Preble's habitat.
The property was evaluated for potential Preble's habitat, based on the current USFWS
guidelines. The banks and margins of the South Platte River contain potential Preble's
habitat within patches of coyote willow along the entire southeast boundary of the
property. According to the Natural Heritage Program there are historical records for
Preble's within close proximity to the project site, and no recent trapping surveys have
been conducted within the area. Therefore, we recommend that a Preble's trapping
survey be conducted on the site prior to disturbance.
Ute Ladies'-tresses Orchid Habitat
The Ute ladies'-tresses orchid (Spiranthes diluvialis) is a federally listed threatened plant
species characteristically found in wet meadows and alluvial flood plains below 6500 feet
in northern Colorado, southwestern Wyoming, and the Uintah Basin of Utah. Habitat
assessments and/or pedestrian surveys during the blooming period are required for sites
within the South Platte River 100 year floodplain and in characteristic habitat which
includes areas with a seasonally high water table, wet meadows, stream channels.
floodplains, areas with vegetation in the facultative wet or obligate classification, and
jurisdictional wetlands. Potential critical orchid habitat was identified within the riparian
corridor adjacent to the South Platte River and within potential wetlands located on both
sides of the levee that traverses the property.
Western Burrowing Owl Habitat
The State of Colorado listed the western burrowing owl (Athene cunicularia) as a
threatened species of special concern. While the burrowing owl does not fall under the
protections of the federal Endangered Species Act, it is protected under the federal
Migratory Bird Act and State of Colorado statutes that prohibit the killing of this species.
If the owl is identified, mitigation or avoidance measures may be required. The western
burrowing owl is a summer migratory resident of Colorado, found primarily in grasslands
and mountain parks, usually in or near black-tailed prairie dog or Richardson's ground
squirrel colonies. The owls may also use well-drained steppes, deserts, prairies, and
agricultural lands. The favored habitat is well-grazed, early successional grasslands
Danny Ortiz
Milliken I Site Investigation
page 3
with significantly sandy soils. No prairie dog or ground squirrel colonies were observed
on the property. Therefore, it is highly unlikely that western burrowing owls are present.
Discussion and Recommendations
Waters of the United States and Jurisdictional Wetlands
The South Platte River is considered waters of the United States. As there is no proposed
impact to the river from the project, no permitting is required by the USACE.
Potential jurisdictional wetlands are present along both sides of the levee traversing the
property from southwest to northeast. If development envisions impacting these areas, a
jurisdictional wetland delineation should be undertaken to characterize the wetland and
establish areal extent. Regulation and definition of jurisdictional wetlands regulated by
the USACE has changed recently based on a United States Supreme Court ruling (please
refer to the attached memorandum). It is our preliminary opinion that some of the
wetlands observed on the Milliken I site may not be jurisdictional under current legal
interpretation and may not need to be permitted if disturbed by the project. We
recommend conducting a jurisdictional wetland delineation to establish the character of
all wetlands on the property. If some or all of the wetlands fall under the current criteria
that exempt them from USACE jurisdiction, we recommend securing a concurrence from
the USACE stating that the wetlands are non-jurisdictional, thereby protecting the
proponent from later changes in interpretation.
Threatened and Endangered Species
The western burrowing owl occupies abandoned prairie dog and ground squirrel burrows
on open ground. There were no prairie dog or ground squirrel burrows found on the site,
therefore no western burrowing owl habitat was identified.
Characteristic potential critical habitat for the Ute ladies'-tresses orchid was identified
within the riparian corridor adjacent to the South Platte River and within wetlands along
both sides of the levee. If impacts to these areas are anticipated, a pedestrian survey
should be conducted during the period of anthesis (July 15-August 31).
Potential critical habitat for the Preble's meadow jumping mouse was identified along the
South Platte River within patches of coyote willow. It is our recommendation that a
Preble's trapping survey be conducted on the site. Trapping surveys are conducted from
June 1 through September 15.
Danna Ortiz
Milliken I Site Investigation
page 4
If we can provide additional information or clarification regarding the preliminary
investigation, please call me at your convenience.
Sincerely,
f/rvs
Michael S. Savage
Vice President
Attachment: General Location and Features Map
Isolated Wetland Memorandum
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Savage and Savage
Memorandum
To: Wetland Clients
From: Mike Savage 09?
Date: February 16, 2001
Subject: Zen and the Art of Defining "Isolated Wetlands"
File#: Wetland Definitions
Our most frequently asked recent questions and the most troubling have recently been,
"What is an isolated wetland?" and "What impact does the recent U.S. Supreme Court
decision on isolated wetlands have on my projects?" Today while conducting ancillary
research, we had a long and enlightening discussion with Scott Franklin of the U.S. Army
Corps of Engineers, Omaha District, Denver Regulatory Office regarding these very
questions. The following statement reflects the current Denver Regulatory Office
approach to defining "isolated wetlands."
"Based upon the ruling by the Supreme Court in the matter of Solid Waste
Agency of Northern Cook County v. U .S. Army Corps of Engineers, No.99-1178
(January 9, 2001), the Department of the Army's regulatory jurisdiction over
isolated, non-navigable, intrastate waters has been eliminated if the sole nexus to
interstate commerce was use of the waters by migratory birds. Isolated wetlands
are not covered in Section 404 of the Clean Water Act. Wetlands that are surface
connected or adjacent to a river/tributary are waters of the United States. Bed and
bank areas (Other Waters) that connect to a larger river system are also waters of
the United States. If a proposed activity requires work within the above-described
waters of the United States, this office should be notified by a proponent of the
project for proper Department of the Army permits."
This statement from the Corps appears to define "isolated waters" in the following
manner. If the only connection to interstate commerce (the interstate commerce clause
being the legal means for the federal government regulating waters of the United States
contained wholly within a state) was what I lovingly call the "duck test", or use of the
waters by migratory waterfowl that travel interstate, then the Corps no longer has
jurisdiction over these "isolated waters". However, if the waters of the United States (this
includes wetlands) are navigable (a personal watercraft can be floated on them), or are
connected by surface water (a flowing drainage within a channel) to tributary waters
(bodies of water that flow or are located between states), then these areas are waters of
the United States.
Practically speaking, this means that if your project site has wetland areas or areas of
water that are not connected to a larger body of water that is tributary to an interstate
Wetland Definitions 02/16/01 Page 2
body of water, then the wetland or water body may be isolated and not subject to Corps
jurisdiction (remember the "may be" above, and I'll explain later). An example of an
isolated non-jurisdictional wetland would be a wet meadow located on a slope that is fed
by a seep with no surface water channel connecting the wet meadow to a perennial
stream downstream. Another example is a small depression within an otherwise dry area
that contains cattails, water, and hydric soils that retains the wetland characteristics
because of a clay bottom. An example where the Corps retains jurisdiction is a cattail
wetland within an old oxbow feature that is surface connected to a perennial stream and
illustrates the three wetland criteria from the cattail wetland to the junction with the
stream. And the Corps is retaining jurisdiction over all ditches that were or remain
natural drainage channels. Man-made ditches that connect to tributary waters are under
Corps jurisdiction.
An issue that has not been clarified to date is the issue of adjacency. This affects those
areas that are not "surface connected" to a tributary interstate water but are adjacent to
such a feature. Typically, that means many of the alluvial features such as flood plains or
terraces. The Corps is awaiting guidance from their solicitors in Washington D.C. on this
issue.
As these defmitions of"isolated waters", "surface connected", and "adjacency" have not
been evaluated extensively in the field, interpretations may differ between those of us that
delineate wetlands and the regulatory staff of the Corps. The Corps has suggested a
procedure to protect proponents where there are issues of "isolated waters." In cases
where a proponent believes there is no Corps jurisdiction due to the isolated nature of the
wetlands or waters, the Corps recommends obtaining a concurrence from the Corps
office. Those of you who have worked with us on threatened and endangered species
issues will recognize this process as the same that we go through with U.S Fish and
Wildlife when we obtain concurrence for absence of critical habitat, alleviating the need
for further species specific investigations (those darn mouse trapping surveys). In this
way, the proponents protect themselves from an adverse interpretation later that could
result in enforcement or permitting.
Hopefully, this helps answer those nagging questions, at least temporarily. And yes, as
we look at new sites from now on we will be noting whether in our opinion any of the
waters or wetlands fall under the isolated category. If they appear to, we will be strongly
urging you to pursue the concurrence process described above.
Have a good weekend, and please call or e-mail me (savasavar;aol.com) if you have any
questions or scenarios that we might encounter.
MILLIKEN II PROJECT
WATERS OF THE UNITED STATES IDENTIFICATION
AND JURISDICTIONAL WETLAND DELINEATION
WELD COUNTY, COLORADO
r
Prepared by: Savage and Savage, Inc.
464 West Sumac Court
Louisville, Co 80027
(303) 666-7372 telephone
(303) 665-6808 fax
March 2001
TABLE OF CONTENTS
Page
EXECUTIVE SUMMARY 1.
INTRODUCTION 1.
SITE CHARACTERISTICS 2.
STUDY METHODS 5.
RESULTS 6.
SUMMARY AND RECOMMENDATIONS 7.
LITERATURE CITED 8.
FIGURES 9.
APPENDIX 15.
FIGURES
1. General Location Map 10.
2. Levee Waterway 11.
3. Jurisdictional Wet Meadow Along Levee Waterway 11.
4. Jurisdictional Surface Water Drainage Swale Leaving Levee Waterway 12.
5. Isolated Cattail/Prairie Cordgrass Depression Wetland 12.
6. Isolated Cattail Depression Wetland 13.
7. Isolated Wet Meadow Swale Wetland (NW of levee) 13.
8. Isolated Wet Meadow Swale Wetland (S of RR) 14.
9. Isolated Cattail/Tule Wetland (SE of levee) 14.
10. Jurisdictional Wetland and Sample Point Locations map pocket
EXECUTIVE SUMMARY
A jurisdictional wetland delineation was conducted March 6 and 8, 2001 by Savage and
Savage within the boundaries of the Milliken II project site. The site was evaluated for the
three criteria for jurisdictional wetlands; hydrophytic vegetation, hydric soils, and a
hydrologic regime indicative of inundation or saturation. Jurisdictional wetlands and
waters of the United States were identified and mapped within the site. Waters of the
United States (other than wetlands) were identified within the Big Thompson River, the
South Platte River, and a levee waterway. One jurisdictional wetland was identified within
the site. This wetland included a wet meadow, fringe wetlands along the levee waterway,
and the surface water drainage swale from the levee waterway to the South Platte River.
The components of this wetland were continuous from their origin to the terminus at the
South Platte River. Five areas that met the three jurisdictional wetland criteria, but were
considered to be isolated were identified and mapped. Jurisdictional wetlands accounted
for approximately 3.40 acres and waters of the United States accounted for 2.78 acres
within the site.
INTRODUCTION
Savage and Savage was contracted by Rocky Mountain Consultants on behalf of
Aggregate Industries to delineate the Milliken II project site thought to contain waters of
the United States and jurisdictional wetlands (see General Location Map). The Milliken II
site is approximately 283 acres located east of Two Rivers Parkway and along both sides
of Weld County Road 396. The South Platte River forms the property boundary along the
majority of the south and east sides. The Big Thompson River traverses the northwest
corner of the site. The site is located within the SW '/ of Section 4, SE'/ SE'/ of Section
5, and the NE'/ NE% of Section 9, all in Township 4 North, Range 66 West, 6th Prime
Meridian, in Weld County, Colorado. The U.S.G.S. 7.5-minute quadrangle "Milliken"
contains the site. The latitude and longitude of the center of the site are 40°20'14" North
and 104°47'29" West. Average elevation of the site is 4690 feet above MSL. The
property was accessed from Two Rivers Parkway and Weld County Road 396.
Approximately four hundred feet of the Big Thompson River crosses the northwest corner
of the site and was accessed from Two Rivers Parkway.
The purpose of this delineation was to identify and map jurisdictional wetlands and waters
of the United States within the area of interest in advance of final planning for mineral
extraction and development of this area. Michael and Edith Savage of Savage and Savage
conducted fieldwork March 6 and 8, 2001.
-1-
SITE CHARACTERISTICS
Topography and Geomorphic Features
The Milliken II site is situated between the South Platte River and the Big Thompson
River which are an average of 0.75 miles apart in the area of the site. The Big Thompson
River flows from west to east across the northwest corner of the site. The South Platte
River forms the south and east boundaries of the site. The most significant natural
topographic features of the site are the terraces and relict topography associated with both
the South Platte River and the Big Thompson River. The site historically contained the
combined floodplains of the Big Thompson and South Platte Rivers. The predominant
topography of the site is flat with a gentle slope to the east toward the South Platte River.
Significant human alteration to the topography of the site has occurred. Currently, an
elevated rail line traverses the center of the site, running from southwest to northeast,
crossing the South Platte River on an elevated trestle near the center of the east boundary
of the site. A system of levees has been constructed throughout the site, generally
paralleling the South Platte River from southwest to northeast.
The levees function to isolate the agricultural fields from floods and high flows of the
South Platte River. The levees range from ten to twenty feet in height and in some
locations there are two or more individual levees between the agricultural fields and the
South Platte River. The levee system has significantly impacted surface water flow within
the site, such that the natural channels associated with the South Platte River floodplain
are largely isolated. Surface water now flows from the irrigated fields downgradient along
the levees (and the rail line embankment) and is trapped behind the levees in topographic
low areas. The levee system largely divides the site into a riparian corridor along the
South Platte River side of the levees, and irrigated agricultural fields to the north and west
of the levees.
In addition to the levee system, a number of irrigation supply canals and ditches have been
constructed throughout the site. These structures do not follow historic natural channels
and were dry during the field investigations.
Vegetation
The significant natural vegetation communities within the site can be broadly categorized
as wet meadows and cottonwood riparian woodland. Small inclusions of prairie
cordgrass/tule swale and cattail vegetation communities are found locally within the site as
well. The communities form a mosaic within the property and intergrade together
depending on microtopography, soils, and the ambient hydrologic regime. Each
community is briefly described below.
Wet meadow vegetation communities are found throughout the site where irrigation
tailwater or surface water drainage flows or accumulates during the growing season. This
-2-
community is found predominantly north of the levees adjacent to the agricultural fields
with another notable component south of the rail line embankment. The dominant species
of this community is the graminoid inland saltgrass (Distichlis spicata). This vegetation
community is heavily grazed with a resulting decrease in the diversity of the plant species
found in this community.
Cottonwood Riparian Woodland vegetation is found in the area between the levees and
the South Platte River and immediately adjacent to the Big Thompson River. While the
segment of this community adjacent to the South Platte River remains in fair to good
condition, the community along the Big Thompson River has been significantly degraded
by livestock grazing. This community is dominated by an open canopy comprised of
plains cottonwoods (Populus deltoides). Subdominant tree species include green ash
(Fraxinus pennsylvanica), boxelder (Acer negundo), Russian olive (Elaeagnus
angustifolia), and peach-leaved willow (Salix amygdaloides). The understory of this
community is dominated by grasses and forbs. Dominant grass species include smooth
brome (Bromus inermis), Kentucky bluegrass (Pos pratensis), and inland saltgrass
(Distichlis spicata). Wild licorice (Glycyrrhiza lepidota), lambsquarters (Chenopodium
album) and cow parsnip (Heracleum lanatum) are the dominant forb species. Occasional
patches of the shrubs coyote willow (Salix exigua), wild rose (Rosa arkansana), and
snowberry(Symphoricarpos occidentalis) are encountered.
Prairie Cordgrass/Tule swale vegetation communities are found in localized areas within
the site. Prairie cordgrass/tule swale vegetation communities are found in depressions
formed by historic alluvial deposition as well as anthropogenic depressions associated with
agriculture. The dominant species are prairie cordgrass (Spartina pectinata) and tule
(Schoenoplectus acutus). Additional species encountered in these communities include
Baltic rush (Juncus balticus), cottongrass (Eriophorum angustifolium), and switchgrass
(Panicum virgatum).
Cattail vegetation communities are found in localized areas throughout the site. These
communities may be in association with any or all of the other vegetation communities,
but are most common in areas associated with human modification or disturbance. The
dominant species are cattails (Typha latifolia or Typha angustifolia) which form dense
monocultures.
Hydrology
There are six distinctive hydrologic features on the Milliken II site. The first feature is the
Big Thompson River, a perennial drainage that flows across the northwest corner of the
site. The second, and largest significant hydrologic feature on the site is the South Platte
River that forms the boundary of the site on the south and east sides. The third hydrologic
feature is a surface water drainage that bounds a levee on the north side. This feature
appears to be the result of excavations to build the levee through the south central
segment of the site. This levee waterway collects surface water runoff and irrigation
tailwater from the site and conveys the water to the northeast where it eventually drains
-3-
into a natural surface water channel that empties into the South Platte River on the north
side of the railroad trestle. The fourth hydrologic feature of the site is comprised of
surface water drainage swales and associated wet meadows along the north and south
sides of the elevated rail line embankment. These surface water drainages collect surface
water runoff and irrigation tailwater and convey the water east-northeast to the
intersection with the levee in two locations (adjacent to the levee south of the rail line
southwest of the trestle and at the far northeast boundary of the site). The fifth type of
hydrologic feature on the site are isolated depressions along the edges of the agricultural
fields and Weld County Road 396. The last type of hydrologic feature on the site are
numerous irrigation water supply canals and ditches that provide water for the agricultural
fields above the levee system. The largest is identified as the Western Thompson and
Platte Ditch (USDA, 1980) that flows from west to northeast through the north central
segment of the site. A number of smaller unnamed irrigation ditches feed the fields
throughout the site.
The surface water hydrologic regime of the site is dominated by the distribution of
irrigation water throughout the agricultural fields within the north half of the site.
Irrigation tailwater and a small amount of surface runoff flow to the levee waterway and
the surface water drainage swales. Water within the levee waterway eventually flows to
the South Platte River, while waters above the levee system and the rail line embankment
are isolated and trapped above the levee system.
The entire site likely lies above the South Platte River and Big Thompson River
groundwater alluvial aquifer.
Soils
Soils within the area of interest are representative of their genesis and topographic
position. The Natural Resource Conservation Service (USDA. 1980) identifies three soil
map units within the site.
The alluvial terrace between the levee system and the South Platte River contains Bankard
sandy loam. Bankard soils develop in flood plains of stratified recent alluvium along
stream and rivers. They are deep, somewhat excessively drained soils. Commonly these
soils have a brown sandy loam surface layer about four inches thick which is underlain by
brown calcareous sand with lenses of sandy loam, loam, and fine gravel to five feet.
Bankard soils are not listed as hydric by the U.S. Army Corps of Engineers (USAGE.
1987).
The second soil map unit found on the site forms an arm extending from the South Platte
River to the north-northeast through the site to the Big Thompson River. These soils
comprise the Colombo clay loam series. Colombo clay loam is a deep, well-drained soil
formed on floodplains and terraces. Typically, the surface layer is dark grayish brown clay
loam about 14 inches thick. The underlying material to a depth of 60 inches is pale brown
-4-
clay loam and loam stratified with thin lenses of fine sand, medium sand, and loam. This
soil type is not identified as hydric by the USACE.
The remaining areas of the site, including the majority of the agricultural areas and the
area adjacent to the Big Thompson River contain aquolls and aquents with a gravelly
substratum. Aquolls and aquents develop along bottomlands and flood plains of major
streams. They are deep, poorly drained soils formed in recent alluvium. Commonly the
soils have a loamy or clayey surface layer and are underlain by sand and gravel within 48
inches. The differences between these soils are found in the color of their surface layers.
Aquoll and aquent soils are defined as hydric by the U.S. Army Corps of Engineers
(USACE, 1987).
STUDY METHODS
Rocky Mountain Consultants provided Savage and Savage with a detailed aerial
photograph and maps that identified and located the area of interest and adjacent
surrounding areas. Upon arrival at the site, the study area boundaries were driven and
walked, and the character of the area was established.
After establishing the boundaries and reference points for mapping purposes, a
jurisdictional wetland delineation was conducted. The survey and delineation was
conducted in accordance with the requirements of the U.S. Army Corps of Engineers
Wetlands Delineation Manual (USACE, 1987). To determine the areas are subject to
Corps jurisdiction, three criteria were evaluated: (1) evidence of a hydrologic regime
reflecting saturation or periodic inundation by surface or ground water of sufficient
duration and frequency, (2) soils which are considered hydric by classification or field
characteristics indicating anaerobic conditions, and (3) a prevalence of vegetation typically
adapted to areas of wetland hydrology and soils.
At nine sample points within the property the three criteria were evaluated. Dominant
individual plant species were identified, and their wetland indicator status was assessed at
each sample point (USFWS, 1988). Evidence of the hydrologic regime at the sample
point was collected and evaluated. A soil test pit was dug using a bucket auger to a depth
of at least 18 inches. The soil horizons were inspected and described using texture, soil
color (Kollmorgen, 1992), and moisture. Observations were recorded on USACE
approved data sheets, and are attached in the Appendix. Color photographs of the
jurisdictional wetlands were taken and are being maintained in the permanent data file with
the original field data sheets, with relevant photographs included in the Figures section of
this report.
Sample point locations were located through distance and bearing measurements to
known locations or reference points.
-a-
RESULTS
Waters of the United States
Waters of the United States (WOTUS) were identified within and adjacent to the Milliken
II site. Waters of the United States are found within the riverbed of the Big Thompson
and South Platte Rivers and within the levee waterway. None of the irrigation canals or
ditches encountered on the site were determined to be waters of the United States as they
were maintained irrigation water supply structures and did not appear to be located within
reaches of former natural channels.
WOTUS Feature Acreage
Big Thompson River Not measured
South Platte River Not measured
Levee Waterway 2.78 acres
Jurisdictional Wetlands
Jurisdictional wetlands were identified and mapped in only one area within the site.
Remaining wetland areas were determined to be isolated from tributary systems. These
areas are discussed further below.
The single area determined to meet the current criteria for jurisdictional wetlands
combines a wet meadow area (Figure 3, sample point 008), the fringe wetland areas along
the levee waterway (Figure 2), and the surface water drainage swale leaving the levee
waterway connecting to the South Platte River (Figure 4). The total acreage of these
jurisdictional wetland areas is 3.40 acres.
Non-Jurisdictional and Isolated Wetlands
Recently, the interpretation of what constitutes jurisdictional wetlands and waters of the
United States was altered by a United States Supreme Court decision (Solid Waste
Agency of Northern Cook County v. U .S. Army Corps of Engineers, No.99-1178
(January 9, 2001)). In this decision, the court held that those waters of the United States
whose sole nexus to interstate commerce was use of the waters by migratory birds were
not to be regulated by the U.S. Army Corps of Engineers and were not covered by Section
404 of the Clean Water Act. By so ruling, the court obfuscated the definition of waters of
the United States and jurisdictional wetlands. In order to be regulated, one of two criteria
must be present in determining whether waters or wetlands fall under the jurisdiction of
the Corps; first the wetland or waters must be surface connected to tributary waters of the
United States, or second, the wetlands or waters must be adjacent to tributary waters of
the United States.
Based on the above criteria, we found that the majority of areas that met the three criteria
in the Corps 1987 wetland manual, did not meet the criteria for surface connection to
-6-
tributary waters of the United States. At this time, wetland delineators are not
empowered to make determinations of adjacency by the Corps, therefore it is possible that
the Corps may find that these areas are adjacent and take jurisdiction over these areas and
regulate dredge and fill activities in them under Section 404.
The following areas met the three criteria for jurisdictional wetlands as described in the
study methods above but did not meet the surface connection criterion; the cattail/prairie
cordgrass depression wetland (Figure 5, sample point 002), the cattail depression wetland
(Figure 6, sample point 003), the wet meadow and wet meadow swales (Figures 7 and 8,
representing sample points 006 and 007), and the cattail/tule wetland (Figure 9, sample
point 009).
SUMMARY AND RECOMMENDATIONS
A survey for jurisdictional wetlands and waters of the United States was conducted within
the Milliken II site east of Milliken, Colorado on March 6 and 8, 2001. Areas that met the
1987 USACE Wetland Delineation Manual criteria for jurisdictional wetlands were
identified, sampled as necessary, and mapped. Jurisdictional wetlands were found within a
wet meadow area, the fringe wetland areas along the levee waterway, and the surface
water drainage swale leaving the levee waterway and connecting to the South Platte River.
Additional areas met the wetland criteria but were determined to lack a surface connection
to tributary waters of the United States. Waters of the United States other than wetlands
were identified within the Big Thompson and South Platte Rivers and a levee waterway on
the site.
As current definitions of "isolated waters", "surface connected", and "adjacency" as
described above have not been evaluated extensively in the field, interpretations may differ
between those of us that delineate wetlands and the regulatory staff of the Corps. The
Corps has suggested a procedure to protect proponents where there are issues of"isolated
waters." Based on this wetland delineation, we recommend that the proponent secure a
Corps permit where dredge or fill of any part of the wetland identified as jurisdictional in
this delineation will occur, and obtain a concurrence from Corps regarding the isolated
and/or non-adjacent nature of the other wetland areas described within this report.
-7-
LITERATURE CITED
Kollmorgen Instruments Corp. 1992. Munsell® Soil Color Charts. Newburg,NY
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual.
Technical Report Y-87-1. Department of the Army, Waterways Experiment Station,
Vicksburg, Mississippi
U.S. Fish and Wildlife Service, 1988. National List of Plant Species That Occur in
Wetlands: Central Plains (Region 5). U.S. Department of Interior. Fish and Wildlife
Service Research and Development, Biological Report 88(26.5), Washington, D.C.
U.S. Department of Agriculture, Soil Conservation Service. 1980. Soil Survey of Weld
County, Colorado; Southern Part.
-8-
FIGURES
-9-
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-11-
a F
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e
Figure 4. Jurisdictional Surface Water Drainage Swale Leaving Levee Waterway
,P. . • e
'` r• :, ',C/, - f r•. �s RAY •Y
4.1.,'":7,414..1k { N jt 1 - ey' r y R'
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Figure 5. Isolated Cattail/Prairie Cordgrass Depression Wetland
-12-
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t :4
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i
Figure 6. Isolated Cattail Depression Wetland
•
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Figure 7. Isolated Wet Meadow Swale Wetland (NW of levee)
-13-
r
i_m_ - ,
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Figure 8. Isolated Wet Meadow Swale Wetland (S of RR)
ite
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t l
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Figure 9. Isolated Cattail/Tule Wetland (SE of levee) on Milliken II Site
-14-
APPENDIX
r
-15-
MILLIKEN I PROJECT
WATERS OF THE UNITED STATES IDENTIFICATION
AND JURISDICTIONAL WETLAND DELINEATION
WELD COUNTY, COLORADO
Prepared by: Savage and Savage, Inc.
464 West Sumac Court
Louisville, Co 80027
(303) 666-7372 telephone
(303) 665-6808 fax
April 2001
TABLE OF CONTENTS
Paee
EXECUTIVE SUMMARY 1.
INTRODUCTION 1.
SITE CHARACTERISTICS 1.
STUDY METHODS 4.
RESULTS 5.
SUMMARY AND RECOMMENDATIONS 6.
LITERATURE CITED 7.
FIGURES 8.
APPENDIX 14.
FIGURES
1. General Location Map 9.
2. Upper End of Irrigation Tailwater Basin and Wet Meadow 10.
3. Irrigation Tailwater Wet Meadow North of Levee 10.
4. Irrigation Tailwater Surface Water Drainage North of Levee 11.
5. Irrigation Tailwater Drainage Break Through Levee to South Platte River 11.
6. Swale South of Levee 12.
7. Anthropogenic Topographic Break in Cattail Swale South of Levee 12.
8. Natural Topographic Break in Swale South of Levee 13.
9. Slough Adjacent to South Platte River on Milliken I Site 13.
10. Sample Point Locations map pocket
EXECUTIVE SUMMARY
A jurisdictional wetland delineation was conducted April 2, 2001 by Savage and Savage
within the boundaries of the Milliken I project site. The site was evaluated for the three
criteria for jurisdictional wetlands; hydrophytic vegetation., hydric soils, and a hydrologic
regime indicative of inundation or saturation. Jurisdictional wetlands and waters of the
United States were identified and mapped within the site. Waters of the United States
(other than wetlands) were identified within the South Platte River and within a slough
adjacent to the South Platte River. Remaining wetlands located north and south of the
levee were judged non-jurisdictional. While meeting the three jurisdictional wetland
criteria, they are considered isolated or man-made due to irrigation water.
INTRODUCTION
Savage and Savage was contracted by Rocky Mountain Consultants on behalf of
Aggregate Industries to delineate the Milliken I project site thought to contain waters of
the United States and jurisdictional wetlands (see General Location Map). The site is
approximately 205 acres located within the W%2 and NW/NW/4 of Section 8, Township 4
North. Range 66 West of the Sixth Prime Meridian, Weld County, Colorado. The
property is bounded by Colorado Highway 60 on the west, a rail line on the north, an
elevated levee road on the northeast, and the South Platte River on the southeast. We
accessed the property via an existing road that skirts the southeast edge of the property
and is used to maintain the oil and gas resources on the site.
The purpose of this delineation was to identify and map jurisdictional wetlands and waters
of the United States within the project site in advance of final planning for mineral
extraction and development of this area. Michael and Edith Savage of Savage and Savage
conducted fieldwork April 2, 2001.
SITE CHARACTERISTICS
Topography and Geomorphic Features
The Milliken I site is located northwest of the South Platte River. The river forms the
south and east boundaries of the site. The most significant natural topographic features of
the site are the terraces and relict topography associated with the South Platte River. The
predominant topography of the site is flat with a gentle slope to the southeast toward the
South Platte River.
Significant human alteration to the topography of the site has occurred. Currently, an
elevated rail line makes up the northwest boundary of the site. The most significant
human alteration to the site other than the rail line is the levee that parallels the South
-1-
Platte River from southwest to northeast. The area to the north and west of the levee is
divided into flood irrigated agricultural fields for row crops and hay.
The levee is approximately ten feet in height and functions to isolate the agricultural fields
from floods and high flows of the South Platte River. The levee has significantly impacted
surface water flow within the site, such that the natural channels associated with the South
Platte River floodplain are largely isolated. Surface water now flows from the irrigated
fields downgradient along the levee and is trapped behind the levee in topographic low
areas. With the accumulation of enough tailwater, overflow occurs along a narrow
channel to the point where the waters have broken through the levee to the South Platte
River at the northeast boundary of the project site. The levee largely divides the site into
a riparian corridor along the South Platte River side of the levee, and irrigated agricultural
fields to the north and west of the levee.
Vegetation
The significant natural vegetation communities within the site can be broadly categorized
as wet meadow, swale, and cottonwood riparian woodland. The communities form a
mosaic within the property and intergrade together depending on microtopography, soils,
and the ambient hydrologic regime. Each community is briefly described below.
Wet meadow vegetation communities are found where irrigation tailwater or surface
water drainage flows or accumulates during the growing season. This community is found
predominantly north of the levee between the levee and adjacent agricultural fields. The
low areas within the wet meadow contain standing water. The dominant plant species
within these low areas consist of tule (Scirpus acutus) and algae. The areas immediately
above the standing water are dominated by spikerush (Eleocharis palustris), curly dock
(Rumex crispus), and an unknown hydrophytic grass. The margin between the wetland
area and the uplands is dominated by inland saltgrass (Distichlis spicata). The upland
islands within the wet meadow consist of mesic grasses such as Kentucky bluegrass (Poa
pratensis) and smooth brome (Bromus inermis).
Swale vegetation communities are found along the south rim of the levee. The swale
vegetation communities are formed where water collects within a depression between the
levee and the riparian corridor. The dominant species are tule, cottongrass (Eriophorum
angustifolium), curly dock, reed canarygrass (Phalaris arundinacea), and three-square
(Scirpus americanus).
Cottonwood Riparian Woodland vegetation is found in the area between the levee and
the South Platte River. A plains cottonwood (Populus deltoides) woodland dominates the
riparian corridor adjacent to the South Platte River. This woodland consists of mature
cottonwoods with an open graminoid understory. Dominant understory species consist of
Kentucky bluegrass (Poa pratensis), smooth brome (Bromus inermis), musk thistle
(Carduus nutans), and filaree (Erodium cicutarium). Clumps of coyote willow (Salix
exigua) are present, especially on the southeast and northeast areas of the woodland.
-2-
Hydrology
There are four distinctive hydrologic features on the Milliken I site. The first, and largest
significant hydrologic feature is the South Platte River that forms the boundary of the site
on the south and east sides. The second hydrologic feature is a slough that is located
adjacent to the South Plate River channel on the west bank. Water enters and exists the
slough from the South Platte River during high flows. Sufficient groundwater is present
to keep standing water present in the slough in the deeper pockets. The third hydrologic
feature on the site is comprised of surface water drainage swales located along the south
side of the levee. These surface water drainage swales collect surface water runoff that
accumulates between the levee and the riparian corridor. Drainage from the swales is
discontinuous to the South Platte River due to manmade and natural topographic breaks.
The fourth hydrologic feature on the site is comprised of pools and surface runoff channels
along the north side of the levee. These areas collect irrigation tailwater from agricultural
fields to the north and convey the water into a small channel that connects to the South
Platte River.
The entire site likely lies above the South Platte River groundwater alluvial aquifer.
Soils
Soils within the area of interest are representative of their genesis and topographic
position. The Natural Resource Conservation Service (USDA, 1980) identifies four soil
map units within the project site.
The agricultural field immediately east of Highway 60 and south of the rail line contains
the soil map unit, Altvan loam. Altvan soils are deep well-drained soils formed in old
alluvial terraces. The surface layer is typically a grayish brown loam ten inches in
thickness. The subsurface layers are comprised of brown clay loam and sandy clay loam
overlying a calcareous loamy sand. Gravelly sand is unusually encountered at thirty inches
below the surface. The U.S. Army Corps of Engineers does not list Altvan soils as hydric.
The alluvial terrace between the levee and the South Platte River contains Bankard sandy
loam soils. Bankard soils develop in flood plains of stratified recent alluvium along stream
and rivers. They are deep, somewhat excessively drained soils. Commonly these soils
have a brown sandy loam surface layer about four inches thick which is underlain by
brown calcareous sand with lenses of sandy loam, loam, and fine gravel to five feet.
Bankard soils are not listed as hydric by the U.S. Army Corps of Engineers.
The third soil map unit encompasses an area north of the levee, east of the Altvan soils.
and south of the Dacono soils. This unit is comprised of aquolls and aquents with a
gravelly substratum. Aquolls and aquents develop along bottomlands and flood plains of
major streams. They are deep, poorly drained soils formed in recent alluvium. Commonly
the soils have a loamy or clayey surface layer and are underlain by sand and gravel within
48 inches. The differences between these soils are found in the color of their surface
-3-
layers. Aquoll and aquent soils are defined as hydric by the U.S. Army Corps of
Engineers.
The last soil map unit found on the project site includes the remaining agricultural fields to
the north of the aquolls and aquents and south of the rail line. These soils comprise the
Dacono clay loam series. Dacono clay loam is a deep, well-drained soil formed on
terraces. Typically, the surface layer is grayish brown clay loam about 12 inches thick.
The underlying material is grayish brown clay loam about 15 inches thick. Dacono clay
loam soils are not listed as hydric by the U.S. Army Corps of Engineers.
STUDY METHODS
Rocky Mountain Consultants provided Savage and Savage with a detailed aerial
photograph and maps that identified and located the project area and adjacent surrounding
areas. Upon arrival at the site, the study area boundaries were driven and walked, and the
character of the area was established.
After establishing the boundaries and reference points for mapping purposes, a
jurisdictional wetland delineation was conducted. The survey and delineation was
conducted in accordance with the requirements of the U.S. Army Corps of Engineers
Wetlands Delineation Manual (USACE, 1987). To determine the areas are subject to
Corps jurisdiction, three criteria were evaluated: (1) evidence of a hydrologic regime
reflecting saturation or periodic inundation by surface or ground water of sufficient
duration and frequency, (2) soils which are considered hydric by classification or field
characteristics indicating anaerobic conditions, and (3) a prevalence of vegetation typically
adapted to areas of wetland hydrology and soils.
At six sample points within the property the three criteria were evaluated. Dominant
individual plant species were identified, and their wetland indicator status was assessed at
each sample point (USFWS, 1988). Evidence of the hydrologic regime at the sample
point was collected and evaluated. A soil test pit was dug using a bucket auger to a depth
of at least 18 inches. The soil horizons were inspected and described using texture, soil
color (Kollmorgen, 1992), and moisture. Observations were recorded on USACE
approved data sheets, and are attached in the Appendix. Color photographs of the
jurisdictional wetlands were taken and are being maintained in the permanent data file with
the original field data sheets, with relevant photographs included in the Figures section of
this report.
Sample point locations were located through distance and bearing measurements to
known locations or reference points.
-4-
RESULTS
Waters of the United States
Waters of the United States (WOTUS) were identified adjacent to the Milliken I site.
Waters of the United States are found within the riverbed and channel of the South Platte
River and within the slough located west of and connected to the South Platte River.
Jurisdictional Wetlands
No jurisdictional wetlands were identified within the project site.
Non-Jurisdictional and Isolated Wetlands
Recently, the interpretation of what constitutes jurisdictional wetlands and waters of the
United States was altered by a United States Supreme Court decision (Solid Waste
Agency of Northern Cook County v. U .S. Army Corps of Engineers, No.99-1178
(January 9, 2001)). In this decision, the court held that those waters of the United States
whose sole nexus to interstate commerce was use of the waters by migratory birds were
not to be regulated by the U.S. Army Corps of Engineers and were not covered by Section
404 of the Clean Water Act. By so ruling, the court obfuscated the definition of waters of
the United States and jurisdictional wetlands. In order to be regulated, one of two criteria
must be present in determining whether waters or wetlands fall under the jurisdiction of
the Corps; first the wetland or waters must be surface connected to tributary waters of the
United States, or second, the wetlands or waters must be adjacent to tributary waters of
the United States.
It has also recently been the opinion of the U.S. Army Corps of Engineers Omaha District
that wetlands created by man induced irrigation that would revert to uplands if the
irrigation activity were to be terminated, do not fall under Corps jurisdiction.
Based on the above criteria, we found that all of the wetlands north of the levee were
created by irrigation water and would revert to uplands if the irrigation activity was
curtailed, therefore, these wetlands do not fall under Corps jurisdiction. We also found
that all of the wetlands south of the levee have no surface water connection to the South
Platte River, therefore, these wetlands do not fall under Corps jurisdiction. At this time,
wetland delineators are not empowered to make determinations of adjacency by the
Corps, therefore it is possible that the Corps may find that the swale area south and east of
the levee is adjacent and take jurisdiction over this area, regulating dredge and fill
activities in it under Section 404 of the Clean Water Act.
-5-
SUMMARY AND RECOMMENDATIONS
An on-site survey for jurisdictional wetlands and waters of the United States was
conducted within the Milliken I site east of Milliken, Colorado on April 2, 2001. Areas
that met the 1987 USACE Wetland Delineation Manual criteria for jurisdictional wetlands
were identified, sampled as necessary, and mapped. Waters of the United States other
than wetlands were identified within the South Platte River and the slough adjacent to the
river. No jurisdictional wetlands were identified on the site.
As current definitions of "isolated waters", "surface connected", and "adjacency" as
described above have not been evaluated extensively in the field, interpretations may differ
between those of us that delineate wetlands and the regulatory staff of the Corps. The
Corps has suggested a procedure to protect proponents where there are issues of"isolated
waters." Based on this wetland delineation, we recommend that the proponent secure a
Corps permit prior to dredge or fill to any area designated or potentially qualifying as
waters of the United States (including wetlands), and obtain a concurrence from the Corps
prior to any disturbance to wetlands that we have identified as non-jurisdictional that are
isolated or created by man induced irrigation water prior to disturbance.
-6-
LITERATURE CITED
Kollmorgen Instruments Corp. 1992. Munsell® Soil Color Charts. Newburg, NY
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual.
Technical Report Y-87-1. Department of the Army, Waterways Experiment Station,
Vicksburg, Mississippi
U.S. Fish and Wildlife Service, 1988. National List of Plant Species That Occur in
Wetlands: Central Plains (Region 5). U.S. Department of Interior, Fish and Wildlife
Service Research and Development, Biological Report 88(26.5), Washington. D.C.
U.S. Department of Agriculture, Soil Conservation Service. 1980. Soil Survey of Weld
County, Colorado; Southern Part.
-7-
FIGURES
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Figure 3. Irrigation Tailwater Wet Meadow North of Levee
-10-
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-12-
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Figure 9. Slough Adjacent to South Platte River on Milliken I Site
-13-
APPENDIX
ea-
-14-
NT o F...,
DEPARTMENT OF THE ARMY
CORPS OF ENGINEERS, OMAHA DISTRICT
DENVER REGULATORY OFFICE, 9307 S. PLATTE CANYON ROAD
❑ m� LITTLETON, COLORADO 80128-6901
April 16, 2001
Ms. Edith Savage
Savage and Savage
464 West Sumac Court
Louisville, CO 80027-2227
RE: Aggregate Industries Proposed Gravel Pit, Milliken I Project, South Platte River
Corps File No. 200180243
Dear Ms. Savage:
Reference is made to the above-mentioned project located in the NE 'A of Section 8, Township 4
North, Range 66 West, Weld County, Colorado. The Corps of Engineers has determined the following
areas to be jurisdictional waters of the United Sates on the project site. If any work requires the
placement of dredged or fill material, or excavation, either temporary or permanent, within these areas,
this office should be notified prior to the work for proper Department of the Army permits:
* The South Platte River.
* South Platte River backwaters, and any adjacent wetlands, at the location of the"Irrigation
Tailwater Drainage Break Through Levee to the South Platte River", as identified in Figure 5 of
your"Milliken I Project Waters of the United States Identification and Jurisdictional Wetland
Delineation Weld County, Colorado"report.
* The South Platte River slough, identified as Figure 9 in your report as "Slough Adjacent to the
South Platte River on Milliken I Site".
When contacting or office, work in waters of the U.S. should be shown on a map with a list
identifying the Quarter Section, Township, Range and County, and Latitude and Longitude to seconds or
the UTM coordinates of each area of work.
The wetlands at this site that are created by man induced irrigation and would revert to uplands if
the irrigation activity were to be cut off are not waters of the U.S. pursuant to Section 404 of the Clean
Water Act. A Department of the army permit will not be required for any work in these wetlands.
Based upon the ruling by the Supreme Court in the matter of Solid Waste Agency of Northern
CoolcCounty v. U.S. Army Corps of Engineers, No. 99-1178 (January 9, 2001), the DA's regulatory
jurisdiction over isolated, non-navigable, intrastate waters has been eliminated if the sole nexus to
interstate commerce was use of the waters by migratory birds. It is apparent under the ruling above that
the DA does not have the authority to regulate work in the isolated wetlands located in the swale south of
the levee, as indicated in Figures 6 and 7 of your April 2001 report. These wetlands are also not
considered to be adjacent wetlands. Therefore, no permit or other authorization by the DA is required for
work in these wetlands.
2
If there are any questions concerning this matter please call Mr.Terry McKee of this office at
303-979-4120 and reference Corps File No. 200180243.
Sincerely,
Ti othy T. . y
Chi I- . - .egulat.ry Office
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DEPARTMENT OF THE ARMY
CORPS OF ENGINEERS, OMAHA DISTRICT
DENVER REGULATORY OFFICE, 9307 S.PLAT IL CANYON ROAD
LITTLETON, COLORADO 80128-6901
April 27,2001
Ms. Edith Savage
Savage and Savage
464 West Sumac court
Louisville, CO 80027-2227
RE: Milliken II Project,Isolated Wetlands Determination
Corps File No.200180243
Dear Ms. Savage:
We have reviewed the above-mentioned property for Department of the Army (DA) authorization. The
property is located in the SW ''A of Section 4, SE 'A of Section 5 and the NE 'A of Section 9, all in Township 4
North, Range 66 West,Weld County, Colorado.
Based upon the ruling by the Supreme Court in the matter of Solid Waste Agency of Northern Cook
County v. U.S. Army Corps of Engineers,No. 99-1178 (January 9, 2001), the DA's regulatory jurisdiction over
isolated, non-navigable, intrastate waters has been eliminated if the sole nexus to interstate commerce was use of
the waters by migratory birds. It is apparent under the ruling above that the DA does not have the authority to
regulate work in the isolated wetlands located in the area reflected in your letter. Therefore,no permit or other
authorization by the DA is required for work in these isolated wetlands.
Please see the attached 81/2 by 11 copied excerpt from your March 5, 2001 map, which shows wetlands
labeled 1 and 2. These wetlands by their close proximity to a tributary to waters of the U.S., as shown as dotted
and blackened areas on your map, are considered to be adjacent and jurisdictional. Prior to any work in the
jurisdictional wetlands and other waters, which includes the South Platte River as identified on your March 5,
2001 wetlands delineation map,this office should be notified for proper Department of the Army permits
If you have any questions concerning this verification, please call Mr. Terry McKee at(303) 979-4120
and reference File No. 200180243.
Sincerely,
Timo T. ey
Chief, D Reg. • o •ffice
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MILLIKEN I AND II PROJECTS
WELD COUNTY, COLORADO
PREBLE'S MEADOW JUMPING MOUSE SURVEY REPORT
(Zapus hudsonius preblei)
Prepared by Savage and Savage
June2001
EXECUTIVE SUMMARY
Savage and Savage conducted a trapping survey for the presence of the federally listed
threatened Preble's meadow jumping mouse (Zapus hudsonius preblei) within the
Milliken I and II project areas adjacent to the South Platte River located east of Milliken
in Weld County, Colorado from June 6 to 8, 2001. The survey was conducted for Rocky
Mountain Consultants on behalf of Aggregate Industries. The survey was conducted in
accordance with U.S. Fish and Wildlife Survey guidelines dated May 19, 1999. One
Zapus hudsonius preblei was found during the survey.
Name and Address of Surveyors
Michael S. and Edith A. Savage
Savage and Savage, Inc.
464 West Sumac Court
Louisville, Colorado 80027
(303) 666-7372
Project Description
Rocky Mountain Consultants and Aggregate Industries requested the survey as part of the
development plan for mineral extraction. As part of the development plan the proponent
requested identification of any potentially critical Preble's Meadow Jumping Mouse
(Zapus hudsonius preblei) habitat, and a survey of such habitat.
Site Location
The trapping survey area along the South Platte is located within the Milliken I and
Milliken II sites. The Milliken I site is approximately 205 acres located within the W%:
and NW'/ NE'/ of Section 8, Township 4 North, Range 66 West of the Sixth Prime
Meridian, Weld County, Colorado. The property is bounded by Colorado Highway 60 on
the west, a rail line on the north, an elevated levee road on the northeast, and the South
Platte River on the southeast. The Milliken II site is approximately 283 acres located east
of Two Rivers Parkway and along both sides of Weld County Road 396. The South
Platte River forms the property boundary along the majority of the south and east sides.
The Big Thompson River traverses the northwest corner of the site. The Milliken II site
1
is located within the SW ''A of Section 4, SEA SE'/ of Section 5, and the WA NW% of
Section 9, all in Township 4 North, Range 66 West, 6tPrime Meridian, in Weld County,
Colorado. The latitude of the center of the two project areas is 40°19'53" N and the
corresponding longitude is 104°47'49" W. The UTM coordinates of the center of the two
project areas are 4464470m N and 517250m E.
Survey Dates and Times
The survey was initiated on June 6, 2001 and concluded June 8, 2001. One hundred fifty
traps were laid out and initially set June 5, 2001 from 4:00 p.m. to 8:00 p.m. MDT. Traps
were checked each subsequent morning from 7:00 a.m. to 10:00 a.m. MDT, and reset
from 5:00 p.m. to 7:00 p.m. MDT each day. The survey ended June 8, 2001 at 11:00 am.
MDT with collection of the traps after documentation of trapped species.
One trapline consisting of traps 1-80 was placed along both sides of the railroad tracks
immediately west of the South Platte within the Milliken II site. A second trapline
consisting of traps 80-150 was placed south of the levee surrounding a swale on the
Milliken II site. No suitable trapping habitat was located on the Milliken I site. The total
number of trap nights during the survey was 450.
Bait Type and Amount
Traps were baited with approximately one teaspoon of Manna Prot Sweet 3-way
Livestock feed. Traps were re-baited with fresh bait after each capture. A synthetic
cosmetic puff was placed in each trap for use as bedding by trapped animals.
Meteorological/Climatological Conditions
Skies were overcast and foggy in the early morning and warm for the remainder of the
day during the duration of the survey. The maximum daily temperatures (Denver) during
the trapping survey ranged from 73°F-80°F. The minimum overnight temperatures
(Denver) during the trapping survey ranged from 41°F-54°F.
Ecological and Site Features
Associated Animals
Three species of rodents were captured during the trapping survey; Mus musculus (house
mouse), Peromyscus maniculatus (deer mouse), and Zapus hudsonius preblei (Preble's
meadow jumping mouse). The species and number trapped per date are summarized
below.
2
Species 6/6/01 6/7/01 6/8/01 Total
Mus musculus 1 0 1 2
Peromyscus maniculatus 5 5 8 18
Zapus hudsonius preblei 1 0 0 1
Total number of individuals 7 5 9 21
Number of unsprung traps 126 136 132 394
Percent of unsprung traps 84% 91% 88% 87%
Raccoon tracks and a minor amount of trap vandalism were observed along the north side
of the railroad track near the traping site of the Preble's. One whitetail deer (Odocoileus
virginianus) was sighted during trapline layout and coyote (Canis latrans) scat was
observed within the area of the traplines.
Plant Community
The plant community present within the swale south of the levee is dominated by cattails
(Typha latifolia) with a fringe of coyote willow (Salix exigua). The plant community
north of the railroad tracks in Milliken II where the Preble's was trapped was located
adjacent to the outflow from the levee waterway that flows to the South Platte River.
This area is along the border of the disturbed area of the railroad trestle and the riparian
woodland. The area where the Preble's was trapped contains a mature overstory
consisting of plains cottonwoods (Populus deltoides) and boxelder (Acer negundo) with a
scattered shrub understory of coyote willow (Salix exigua). The herbaceous layer was
well developed and dominated by reed canarygrass (Phalaris arundinacea), cattail
(Typha latifolia), cheatgrass (Bromus tectorum), timothy (Phleum pratense), and
quackgrass (Agropyron repens). Dominant forb species included leafy spurge
(Euphorbia esula), curly dock (Rumex crispus), cow parsnip (Heracleum sphondylium),
tuber starwort (Stellaria jamesiana), and mustard (Brassica rapa).
Ecological Condition/Management History
With the exception of agricultural areas heavy cattle grazing has occurred within the
pasture and riparian woodland areas of both Milliken I and II for many years. As a result,
both of these locations are dominated by weedy plant species within the riparian corridor
and pastures.
Proximity,Degree, and Type of Human Development
Development has been described above.
Other Site Features
Topography and Geomorphic Features—Milliken I
The Milliken I site is located northwest of the South Platte River. The river forms the
south and east boundaries of the site. The most significant natural topographic features
3
of the site are the terraces and relict topography associated with the South Platte River.
The predominant topography of the site is flat with a gentle slope to the southeast toward
the South Platte River.
Significant human alteration to the topography of the site has occurred. Currently, an
elevated rail line makes up the northwest boundary of the site. The most significant
human alteration to the site other than the rail line is the levee that parallels the South
Platte River from southwest to northeast. The area to the north and west of the levee is
divided into flood irrigated agricultural fields for row crops and hay.
The levee is approximately ten feet in height and functions to isolate the agricultural
fields from floods and high flows of the South Platte River. The levee has significantly
impacted surface water flow within the site, such that the natural channels associated with
the South Platte River floodplain are largely isolated. Surface water now flows from the
irrigated fields downgradient along the levee and is trapped behind the levee in
topographic low areas. With the accumulation of enough tailwater, overflow occurs
along a narrow channel to the point where the waters have broken through the levee to
the South Platte River at the northeast boundary of the project site. The levee largely
divides the site into a riparian corridor along the South Platte River side of the levee, and
irrigated agricultural fields to the north and west of the levee.
Topography and Geomorphic Features—Milliken H
The Milliken II site is situated between the South Platte River and the Big Thompson
River which are an average of 0.75 miles apart in the area of the site. The Big Thompson
River flows from west to east across the northwest corner of the site. The South Platte
River forms the south and east boundaries of the site. The most significant natural
topographic features of the site are the terraces and relict topography associated with both
the South Platte River and the Big Thompson River. The site historically contained the
combined floodplains of the Big Thompson and South Platte Rivers. The predominant
topography of the site is flat with a gentle slope to the east toward the South Platte River.
Significant human alteration to the topography of the site has occurred. Currently, an
elevated rail line traverses the center of the site, running from southwest to northeast,
crossing the South Platte River on an elevated trestle near the center of the east boundary
of the site. A system of levees has been constructed throughout the site, generally
paralleling the South Platte River from southwest to northeast.
The levees function to isolate the agricultural fields from floods and high flows of the
South Platte River. The levees range from ten to twenty feet in height and in some
locations there are two or more individual levees between the agricultural fields and the
South Platte River. The levee system has significantly impacted surface water flow
within the site, such that the natural channels associated with the South Platte River
floodplain are largely isolated. Surface water now flows from the irrigated fields
downgradient along the levees (and the rail line embankment) and is trapped behind the
levees in topographic low areas. The levee system largely divides the site into a riparian
4
corridor along the South Platte River side of the levees, and irrigated agricultural fields to
the north and west of the levees.
In addition to the levee system, a number of irrigation supply canals and ditches have
been constructed throughout the site. These structures do not follow historic natural
channels and were dry during the field investigations.
Results of the Trapping Survey
Trapping conducted over 450 trap nights between June 6 and 8, 2001 yielded one Zapus
hudsonius preblei. Twenty-one individual rodents were captured and released during the
trapping survey. Of those individuals captured, two were Mus musculus, eighteen were
Peromyscus maniculatus, and one was Zapus hudsonius preblei.
Conclusion
One Zapus hudsonius preblei individual was found during 450 trap nights from June 6 to
8, 2001, along the South Platte in Weld County, Colorado. Based on these results, it was
concluded that Zapus hudsonius preblei is present in this location of the Milliken II site.
5
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Figure 1. Area North of Railroad Trestle where Preble's was Trapped
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Figure 2. Edith Standing in Exact Location where Preble's was Trapped
6
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Figure 3. Preble's Individual Trapped at Milliken II Site June 6, 2001
ti, toot
Figure 4. Preble's Individual Trapped at Milliken II Site June 6,
7
Zap us hudsonius preblei, Preble's Meadow Jumping Mouse
Survey Field Data Compilation Form
Z. h.preblei found ? Yes ® No O Dates of Survey June 6 to 8, 2001
Surveyor:
Organization/Company Savage and Savage
Full Name(s) Michael and Edith Savage
Location:
Descriptive Site Name (creek, nearby mad intersection, etc.)
U.S.G.S. Quad Name Milliken County Weld Elevation 4690-4700
SW1 //4 of Sec. 4 , SE1 /4 SE11��/4 E Sec 5 1 /2 NW1 /4 of c. 9
Y% Section(s) Towns�up s) 4 $6uNth ltange�s) 66 West
UTM Coordinates, Zone 13 Northing 4464470m • Easting 517250m
Directions to Location North on I-25, east on State Hwy 66 , north on US 85 .
^north on Colo State Hwy 60 , right on Two Rivers Pkwy, fight on WCR 396 ,
right on second r dirt road.
Land Ownership
Habitat:
General Habitat Description Riparian corridor along South Platte River.
Dominant Plant Community Plains cottonwoods, boxelder. coyote wi11nw, with
reed canarygrass, cattail, cheatgrass, timothy, and quackgrass. Forb
species weed
Drainage Type: Pyerennial Stream X Ephemeral Stream Pond/Lake Ditch
Other
Trapping Information:
Type of Traps Sherman Type of Bait Manna Pm %Available (unsprung) 87%
Number of Nights Trapped 3 Total Trapnights 450
Weather conditions prior to and during survey Overcast and foggy early mornings and
warm and dry afternoons.
_associated Animal Species (especially urban predators, rats, house mice) house mice, raccoons
Sketch of surveyed area showing traplines, specific area disqualified(can be done on required U.S.G.S. map of
site if appropriate)
SEE ATTACHED QUAD MAP
Preble's Data:
Number of Preble's trapped or seen 1
Distance from water(m) Sex (m/f) Evidence of repro.* Weight (grams) Marked or tagged?
1.135 ' from S. Platte m yes •
18.8g no
2.
3.
4.
(Continue on separate sheet if needed)
* Reproduction evidence for males is descended testes, for females is enlarged nipples.
Evidence of disease, predation or injury no
(Submit injury/mortality form if appropriate)
Genetic Material Obtained? Yes No X Forwarded to
Specimen(s)? Yes No X Forwarded to
Additional Comments:
(SUBMIT THIS FIELD DATA FORM WITH THE SURVEY REPORT)
MILLIKEN I AND II PROJECTS
WELD COUNTY, COLORADO
UTE LADIES'-TRESSES ORCHID SURVEY REPORT
(Spiranthes diluvialis)
Prepared by Savage and Savage
July 2001
EXECUTIVE SUMMARY
Savage and Savage conducted a pedestrian survey of the federally listed threatened Ute
Ladies'-Tresses orchid (Spiranthes diluvialis) within potential critical habitat on the
Milliken I and II project sites located in Weld County, Colorado on July 21, 2001. This
survey was conducted for Rocky Mountain Consultants on behalf of Aggregate
Industries. The survey was conducted in accordance with U.S. Fish and Wildlife Survey
guidelines and during the period of anthesis of the type population of the orchid in
neighboring Boulder County, Colorado. No individuals of Spiranthes diluvialis were
found during the survey.
INTRODUCTION
Rocky Mountain Consultants requested the survey prior to finalization of a development
plan for Aggregate Industries'Milliken I and II projects. As part of the development plan
Rocky Mountain Consultants requested identification and survey of any potential critical
Ute ladies'-tresses orchid (Spiranthes diluvialis) habitat on site.
The Milliken I site encompasses approximately 205 acres located within the W'/z and
NW'/4 NEV,of Section 8, Township 4 North, Range 66 West of the Sixth Prime Meridian,
Weld County, Colorado. The property is bounded by Colorado Highway 60 on the west,
a rail line on the north, an elevated levee road on the northeast, and the South Platte River
on the southeast. The Milliken II site contains approximately 283 acres located east of
Two Rivers Parkway and along both sides of Weld County Road 396. The South Platte
River forms the property boundary along the majority of the south and east sides. The
Big Thompson River traverses the northwest corner of the site. The Milliken II site is
located within the SW/. of Section 4, the S'/2SE'% of Section 5, and the NE'/.NE% of
Section 8, all in Township 4 North, Range 66 West, 6th Prime Meridian, Weld County,
Colorado. (see Milliken I and II General Location Map) The latitude of the center of the
two project areas is 40°19'53" N and the corresponding longitude is 104°47'49" W. The
UTM coordinates of the center of the two project areas are 1464470m N and 517250m E.
The Ute Ladies'-Tresses orchid (Spiranthes diluvialis) is a federally listed, threatened
plant species known to occur in Colorado. Interim U.S. Fish and Wildlife Service survey
requirements (USFWS, 1992) for the orchid require surveys along the South Platte River
100-year floodplain and perennial tributaries and in potentially critical orchid habitat.
Characteristic orchid habitat requiring a survey includes sites below 6500 feet elevation
with seasonally high water tables, wet meadows, stream channels, floodplains,
1
jurisdictional wetlands, and areas where vegetation falls into the facultative wet or
obligate classification. Sites excluded from the survey requirement include upland sites
(short grass prairie and sagebrush rangeland) and highly disturbed or modified sites.
Based on the above requirements, and a site visit, Savage and Savage staff determined
that the proposed project area could not be disqualified from the requirements for a
pedestrian survey. On July 21, 2001, Savage and Savage staff conducted a pedestrian
survey of the proposed project area in order to determine the presence of the orchid.
SITE CHARACTERISTICS
Hydrology—Milliken I
There are four distinctive hydrologic features on the Milliken I site. The first, and largest
significant hydrologic feature is the South Platte River that forms the boundary of the site
on the south and east sides. The second hydrologic feature is a slough that is located
adjacent to the South Plate River channel on the west bank. Water enters and exists the
slough from the South Platte River during high flows. Sufficient groundwater is present
to keep standing water present in the slough in the deeper pockets. The third hydrologic
feature on the site is comprised of surface water drainage swales located along the south
side of the levee. These surface water drainage swales collect surface water runoff that
accumulates between the levee and the riparian corridor. Drainage from the swales is
discontinuous to the South Platte River due to manmade and natural topographic breaks.
The fourth hydrologic feature on the site is comprised of pools and surface runoff
channels along the north side of the levee. These areas collect irrigation tailwater from
agricultural fields to the north and convey the water into a small channel that connects to
the South Platte River.
Hydrology—Milliken II
There are six distinctive hydrologic features on the Milliken II site. The first feature is
the Big Thompson River, a perennial drainage that flows across the northwest corner of
the site. The second, and largest significant hydrologic feature on the site is the South
Platte River that forms the boundary of the site on the south and east sides. The third
hydrologic feature is a surface water drainage that bounds a levee on the north side. This
feature appears to be the result of excavations to build the levee through the south central
segment of the site. This levee waterway collects surface water runoff and irrigation
tailwater from the site and conveys the water to the northeast where it eventually drains
into a natural surface water channel that empties into the South Platte River on the north
side of the railroad trestle. The fourth hydrologic feature of the site is comprised of
surface water drainage swales and associated wet meadows along the north and south
sides of the elevated rail line embankment. These surface water drainages collect surface
water runoff and irrigation tailwater and convey the water east-northeast to the
intersection with the levee in two locations (adjacent to the levee south of the rail line
southwest of the trestle and at the far northeast boundary of the site). The fifth type of
hydrologic feature on the site are isolated depressions along the edges of the agricultural
fields and Weld County Road 396. The last type of hydrologic feature on the site are
numerous irrigation water supply canals and ditches that provide water for the
2
agricultural fields above the levee system. The largest is identified as the Western
Thompson and Platte Ditch (USDA, 1980) that flows from west to northeast through the
north central segment of the site. A number of smaller unnamed irrigation ditches feed
the fields throughout the site.
The surface water hydrologic regime of the site is dominated by the distribution of
irrigation water throughout the agricultural fields within the north half of the site.
Irrigation tailwater and a small amount of surface runoff flow to the levee waterway and
the surface water drainage swales. Water within the levee waterway eventually flows to
the South Platte River, while waters above the levee system and the rail line embankment
are isolated and trapped above the levee system.
Vegetation—Milliken I
The significant natural vegetation communities within the site where Spiranthes could
potentially occur can be broadly categorized as wet meadow, swale, and cottonwood
riparian woodland. The communities form a mosaic within the property and intergrade
together depending on microtopography, soils, and the ambient hydrologic regime. Each
community is briefly described below.
Wet meadow vegetation communities are found where irrigation tailwater or surface
water drainage flows or accumulates during the growing season. This community is
found predominantly north of the levee between the levee and adjacent agricultural fields.
The low areas within the wet meadow contain standing water. The dominant plant
species within these low areas consist of rule (Scirpus acutus) and algae. The areas
immediately above the standing water are dominated by spikerush (Eleocharis palustris),
curly dock(Rumex crispus), and an unknown hydrophytic grass. The margin between the
wetland area and the uplands is dominated by inland saltgrass (Distichlis spicata). The
upland islands within the wet meadow consist of mesic grasses such as Kentucky
bluegrass (Poa pratensis) and smooth brome (Bromus inermis).
Mixed Vegetation Swale vegetation communities are found along the south rim of the
levee. The swale vegetation communities are formed where water collects within a
depression between the levee and the riparian corridor. The dominant species are tule,
cottongrass (Eriophorum angustifolium), curly dock, reed canarygrass (Phalaris
arundinacea), and three-square (Scirpus americanus).
Cottonwood Riparian Woodland vegetation is found in the area between the levee and
the South Platte River. A plains cottonwood(Populus deltoides) woodland dominates the
riparian corridor adjacent to the South Platte River. This woodland consists of mature
cottonwoods with an open graminoid understory. Dominant understory species consist of
Kentucky bluegrass (Poa pratensis), smooth brome (Bromus inermis), musk thistle
(Carduus nutans), and filaree (Erodium cicutarium). Clumps of coyote willow (Salix
exigua) are present, especially on the southeast and northeast areas of the woodland.
3
Vegetation—Milliken II
The significant natural vegetation communities within this site where Spiranthes could
occur can be broadly categorized as wet meadows and cottonwood riparian woodland.
Small inclusions of prairie cordgrass/tule swale and cattail vegetation communities are
found locally within the site as well. The communities form a mosaic within the property
and intergrade together depending on microtopography, soils, and the ambient hydrologic
regime. Each community is briefly described below.
Wet meadow vegetation communities are found throughout the site where irrigation
tailwater or surface water drainage flows or accumulates during the growing season. This
community is found predominantly north of the levees adjacent to the agricultural fields
with another notable component south of the rail line embankment. The dominant
species of this community is the graminoid inland saltgrass (Distichlis spicata). This
vegetation community is heavily grazed with a resulting decrease in the diversity of the
plant species found in this community.
Cottonwood Riparian Woodland vegetation is found in the area between the levees and
the South Platte River and immediately adjacent to the Big Thompson River. While the
segment of this community adjacent to the South Platte River remains in fair to good
condition, the community along the Big Thompson River has been significantly degraded
by livestock grazing. This community is dominated by an open canopy comprised of
plains cottonwoods (Populus deltoides). Subdominant tree species include green ash
(Fraxinus pennsylvanica), boxelder (Acer negundo), Russian olive (Elaeagnus
angustifolia), and peach-leaved willow (Salix amygdaloides). The understory of this
community is dominated by grasses and forbs. Dominant grass species include smooth
brome (Bromus inermis), Kentucky bluegrass (Pos pratensis), and inland saltgrass
(Distichlis spicata). Wild licorice (Glycyrrhiza lepidota), lambsquarters (Chenopodium
album) and cow parsnip (Heracleum lanatum) are the dominant forb species. Occasional
patches of the shrubs coyote willow (Salix exigua), wild rose (Rosa arkansana), and
snowberry(Symphoricarpos occidentalis) are encountered.
Prairie Cordgrass/Tule swale vegetation communities are found in localized areas
within the site. Prairie cordgrass/tule swale vegetation communities are found in
depressions formed by historic alluvial deposition as well as anthropogenic depressions
associated with agriculture. The dominant species are prairie cordgrass (Spartina
pectinata) and tule (Schoenoplectus acutus). Additional species encountered in these
communities include Baltic rush (Juncus balticus), cottongrass (Eriophorum
angustifolium), and switchgrass (Panicum virgatum).
Cattail vegetation communities are found in localized areas throughout the site. These
communities may be in association with any or all of the other vegetation communities,
but are most common in areas associated with human modification or disturbance. The
dominant species are cattails (Typha latifolia or Typha angustifolia) which form dense
monocultures.
4
Soils—Milliken I
Soils within the area of interest are representative of their genesis and topographic
position. The Natural Resource Conservation Service (USDA, 1980) identifies four soil
map units within the project site.
The agricultural field immediately east of Highway 60 and south of the rail line contains
the soil map unit, Altvan loam. Altvan soils are deep well-drained soils formed in old
alluvial terraces. The surface layer is typically a grayish brown loam ten inches in
thickness. The subsurface layers are comprised of brown clay loam and sandy clay loam
overlying a calcareous loamy sand. Gravelly sand is unusually encountered at thirty
inches below the surface. The U.S. Army Corps of Engineers does not list Altvan soils as
hydric.
The alluvial terrace between the levee and the South Platte River contains Bankard sandy
loam soils. Bankard soils develop in flood plains of stratified recent alluvium along
stream and rivers. They are deep, somewhat excessively drained soils. Commonly these
soils have a brown sandy loam surface layer about four inches thick which is underlain
by brown calcareous sand with lenses of sandy loam, loam, and fine gravel to five feet.
Bankard soils are not listed as hydric by the U.S. Army Corps of Engineers.
The third soil map unit encompasses an area north of the levee, east of the Altvan soils,
and south of the Dacono soils. This unit is comprised of aquolls and aquents with a
gravelly substratum. Aquolls and aquents develop along bottomlands and flood plains of
major streams. They are deep, poorly drained soils formed in recent alluvium.
Commonly the soils have a loamy or clayey surface layer and are underlain by sand and
gravel within 48 inches. The differences between these soils are found in the color of
their surface layers. Aquoll and aquent soils are defined as hydric by the U.S. Army
Corps of Engineers.
The last soil map unit found on the project site includes the remaining agricultural fields
to the north of the aquolls and aquents and south of the rail line. These soils comprise the
Dacono clay loam series. Dacono clay loam is a deep, well-drained soil formed on
terraces. Typically, the surface layer is grayish brown clay loam about 12 inches thick.
The underlying material is grayish brown clay loam about 15 inches thick. Dacono clay
loam soils are not listed as hydric by the U.S. Army Corps of Engineers.
Soils—Milliken H
Soils within the area of interest are representative of their genesis and topographic
position. The Natural Resource Conservation Service (USDA, 1980) identifies three soil
map units within the site.
The alluvial terrace between the levee system and the South Platte River contains
Bankard sandy loam. Bankard soils develop in flood plains of stratified recent alluvium
along stream and rivers. They are deep, somewhat excessively drained soils. Commonly
5
•
these soils have a brown sandy loam surface layer about four inches thick which is
underlain by brown calcareous sand with lenses of sandy loam, loam, and fine gravel to
five feet. Bankard soils are not listed as hydric by the U.S. Army Corps of Engineers
(USACE, 1987).
The second soil map unit found on the site forms an arm extending from the South Platte
River to the north-northeast through the site to the Big Thompson River. These soils
comprise the Colombo clay loam series. Colombo clay loam is a deep, well-drained soil
formed on floodplains and terraces. Typically, the surface layer is dark grayish brown
clay loam about 14 inches thick. The underlying material to a depth of 60 inches is pale
brown clay loam and loam stratified with thin lenses of fine sand, medium sand, and
loam. This soil type is not identified as hydric by the USACE.
The remaining areas of the site, including the majority of the agricultural areas and the
area adjacent to the Big Thompson River contain aquolls and aquents with a gravelly
substratum. Aquolls and aquents develop along bottomlands and flood plains of major
streams. They are deep, poorly drained soils formed in recent alluvium. Commonly the
soils have a loamy or clayey surface layer and are underlain by sand and gravel within 48
inches. The differences between these soils are found in the color of their surface layers.
Aquoll and aquent soils are defined as hydric by the U.S. Army Corps of Engineers
(USACE, 1987).
SURVEY
The survey was conducted by randomly crisscrossing the potentially critical orchid
habitat within the Milliken I and II project sites. The vegetation communities surveyed
include the wet meadow, mixed vegetation swale, prairie cordgrass/tule swale, and
cottonwood riparian woodland along the South Platte River, as well as the edges of the
cattail vegetation communities.
CONCLUSIONS
A pedestrian survey to identify the presence of Spiranthes diluvialis was conducted on
July 21, 2001 by Savage and Savage staff. The survey was conducted in accordance with
U.S. Fish and Wildlife Survey guidelines and during the period of anthesis of the type
population of the orchid in neighboring Boulder County, Colorado. No individuals of
Spiranthes diluvialis were found during the survey within the Milliken I and II properties.
6
LITERATURE CITED
U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation ManuaL
Technical Report Y-87-1. Department of the Army, Waterways Experiment Station,
Vicksburg, Mississippi
U.S.Department of Agriculture, Soil Conservation Service. 1980. Soil Survey of Weld
County, Colorado; Southern Part.
U.S. Fish and Wildlife Service. 1992. Interim Survey Requirements for Spiranthes
diluvialls.
7
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Ptbd Soot1DPO!01998 Wildflmw.Pmtteer(w.wmpoxon
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: \r•-r\:..P 1-,N 1y- Z • Date: - a - O \
Applicant/Owner: tw. r - I c5 J rr 5t. -`. i.. County: \C
Investigator: vl _ State: c
w2T
Do Normal Circumstances exist on the site? 0 No Community ID: ntuAee,„1
Is the site significantly disturbed (Atypical Situation)? Yes o Transect ID:
Is the area a potential Problem Area? Yes Plot ID: no
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Pc\ 5 t r,ac 9.
2- 10.
3. 11.
4. 12.
5. 13.
5. 14.
7. 15.
8 18.
Percent of Dominant Species that are OBL,FACW or MC
(excluding FAC-1. r n o)b
Remarks. etGC 0V Pont. i;Ot4E
•
HYDROLOGY
_Recorded Data(Describe in Remarks): Wetland Hydrology Indicators:
_Stream,Lake.or Tide Gauge Primary Indicators:
Aerial,Photographs —inundated
Other Saturated in Upper 12 Inches
No Recorded Data Avalabls /Water Marks
eat Lines
eat
Deposits
Reid Observations: Z reinege Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. t an.) _9:ddized Root Channels in Upper 12 Inches
��f/Water-Stained Leaves
Depth to Free Water in Pit I o in.) —Local Soil Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: \ G (in.) —Other (Explain in Remarks)
Remarks: Igc \cr 1 :tip; cA ≥BLS av o
�5,..,' vL , A cam E
•
SOILS
Map Unit Name
(Series and Phase): Drainage Class:
Field Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description;
Depth Matrix Color Mottle Colors Mottle Texture, Concretions,
finches) Horizon (Munson Moist) (Munsell Moist) Abundence/Contrest Structure, etc.
-003S5
O-3 A -1.3 3A - \r- .t ;s
5qt o cgs \ '..,c r.-"
3 v5 � 1,F721-t[a 1 F,y 5/ln a;� �ln ��c , �c� .a - �s'c
2,/‘ \Cc-9.„ �/ �p _ QCl°In - c.
3/ c.",` ‘r
Hydric Soil Indicators: -
_Histosol _Concretions
_Hletic Epipedon _Hiph Organic Content in Surface Layer in Sandy Soils
Sulfide Odor _Organic Streaking in Sandy Soils --
puie Moisture Regime _Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
jGleyed or Low-Chrome Colon - _Other(Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytie Vegetation Present? es No (Circle) (Circle)
Wetland Hydrology Present? s No
Hydric Soils Present? ajD No Is this Sampling Point Within a Wetland? Yes No
Remarks: WC,Ter-t4 CDGE or. Wtn..41/4*DCjPVT/. W Thor t.EV{;el.1 /�(,p Sa+ll'►�
0 F AC. F‘Wtfj
PHOTOS
NOW 4,5
Approved by rIQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: m%u.1Ws"TIr Date: ecrzal . n� mtr,L
ApplicantUOwner: 2+a1,r"- - County: web
Investigator: W.a,'-, / tc.S State: cot,atzwtin
Do Normal Circumstances exist on the site? Yes OTC)) Community ID:cw...tta..-
Is the site significantly disturbed (Atypical Situation)? Yes ro Transect ID:
Is the area a potential Problem Area? Yes •o Plot ID: 007-
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. -c--..L1/4..v-4-4 ra", J C vn ,S h- OL3L . 9.
2. y t �y� LY[ FAr� ) 10.
3. \-1,1 'wnict . c rcCt ncvJ 11.
4. 12.
5. 13.
6. 14.
7. 15.
S 16.
Percent of Dominant Species that are 091.,FACW or FAC
(excluding FAC-1. \fn
Remarks: F¢1 14:14G VCZ. VATLbh1 p. -1 7 ZO Pcn ,-'f $C'6NT2@h
CNt+NNeL
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
_Stream. Lake,or Tide Gauge Primary Indicators:
Aerial Photographs _ avid
Other aturated in Upper 12 Inches
No Recorded Data Available star Marks
rift Unes
S5}dimen Deposits
Feld Observations: rainegs Patterns in Wedends
Secondary Indicators(2 or more required):
Depth of Surface Water. Mkt (in.) _Oxidized Root Channels in Upper 12 Inches
_Water-Stained Leaves
Depth to Free Water in Pit: N/R (in.) _Local Sod Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: Gn.) _Other (Explain in Remarks)
Remarks: c.L..rr0 L.3L. C ti•.rG.Z�'r, v['._ - -
SOILS
Map Unit Name
(Sedss and Phase): - Drainage Class:
Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description:
Depth - Matrix Color Mottle Colors Mottle Texture, Concretions,
(inches) Horizon (Munson Moist) (Munsell Moist) Abundance/Contrast Structure. etc.
n- a - A -u—r AV a o \c�.
- LAi
Hydrae Soil Indicators: NerNIC
_Histosol Concretions
_Hisdo Epipedon High Organic Content in Surface Layer in Sandy Soils
_Sulfide Odor _Organic Streaking in Sandy Soils
Aquic Moisture Regime _Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils Ust
_Gleysd or Low-Chroma Colors _Other (Explain in Remarks)
Remarks: S w-NtA r-L4±c-C•... i;. \S
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No (Circle) (Circle)
Wetland Hydrology Present? Yes .•
Hydric Soils Present? as No Is this Sampling Point Within a Wetland? Yes No
Remarks: 2tAzFf ca w LG{4NNIV_-. C8 3 :_x'[Ns- W>ST1 allte-W 10 S[hatyQ
05.U9uw4 Nume ›eM.W witnastaz bURht G(26-) satO%.)i Ate(
6124%4 41 tiy'r ptw�C.AtAGC=Pb2MC ev�ttz*�rCrHYCi2A-C6 No
ttYDQaC
Approved by HOUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Date: `-\ - (-) a- O\
ApplicantUOwner. - !"-< \Ce - � County: L:l:,\a
Investigator: I State: r n
Do Normal Circumstances exist on the site? latil No Community ID:
Is the site significantly disturbed (Atypical Situation)? es No Transect ID:
Is the area a potential Problem Area? No Plot ID: ODD
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. -RCN- err -GA,.=>‘‘7 \Lr\ Pb X..J 9.
2. \n.rb Sr RBI) 10.
3. ` r r- _deg& _S.c.,_ 11.
J
4. 12.
5. 13.
6. 14.
7. 15.
8. 16.
Percent of Dominant Species that are OBL.FACW or FAC -,-1,9
�
(excluding FAC-1. 0-7 j r
Remarks:
HYDROLOGY
_Recorded Data(Describe in Remarks): Wetland Hydrology Indicators:
_Stream. Lake, or Tide Gauge Primary Indicators:
_Aerial,Photographs - _Inundated
Other - _Saturated in Upper 12 Inches
No Recorded Data Available _Water Marks
Drift Lines
Sediment Deposits
Reld Observations: _Drainage Patterns in Wetlands
Secondary Indicators 12 or more required):
Depth of Surface Water: r�lA fin.( ai Root Channels in Upperl2Inches
ftA Water-Stained Leaves
Depth to Free Water in Pit: N fin.) _Local Sol Survey Data
//AA FAC-Neutral Test
Depth to Saturated Soil: Nth (iin.) $.Other(Explain in Remarks)
S �
Remarks: SA1KG n pc TTLA CIcJ
•
•
SOILS
Map Unit Name
(Series and Phase): Drainage Class:
Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description:
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
finches) Horizon (Munsell Moist) (Munson Moist) Abundance/Contrast Structure, etc.
a. /›.% \(l
ID 'it (Q ).F '1-3 `1I( Z- C)1' )t- 1 -
- -Ccc‘-k / --ll — U,.L1r1 Sc.H.eX- vrO:
3 / a; J"x �j 7- `1/9) \S°/0 c��G� -
Hydric Soil Indicators: toi—
_Histosol _Concretions
_Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor _Organic Streaking in Sandy Soils
_Aquic Moisture Regime _Listed on Local Hydric Soils List
_Reducing Conditions Listed on National Hydric Soils List
Gleyed or Low-Chrome Colors _Other(Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yee o)(Clrcle) (Circle)
Wetland Hydrology Present? es Nei-
Hydric Soils Present? No Is this Sampling Point Within a Wetland? Yes
Remarks: 5AMPLe. MI NT IN TAII.wp-r bzADNl1/40 - Awn W/ o.g sPicr
crkrsnwl, )+vwt"Witt plc pl rce,,on._Jt3r 7 t4
•
PAS
Mire*, Hit-
Approved by HQUSACE 2192
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: fmt.Uw-a-3 = Date: AP21r O3 7�0I
Applican0Owner: 2MC - AGCfT21 'AW r�otitR�RS
County: w(ZLD
Investigator: At.S. 54-0.4.C/ R• A. ,A',IA&1= State: cBLB2ADo
Do Normal Circumstances exist on the site? es No Community ID: St� \P
Is the site significantly disturbed (Atypical Situation)? Yes Transect ID:
Is the area a potential Problem Area? Yes o.) Plot ID: cxl4-
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1.51 '4tO a_o Se 9-
2-. —,,wv I- C 'T-S ... w ---v-i FACW 10.
11.
4. 12.
5. 13.
6. 14.
7. 15.
8. 16.
Percent of Dominant Species that are OM-,FACW or MC \OO°I1
(excluding MC-I.
Remarks:
HYDROLOGY
Recorded Data(Describe in Remarks): Wetland Hydrology Indicators:
—
Stream.Lake,or Tide Gauge Primary Indicators:
_
Aedal,Photographs —Inundated
—Other —Saturated in Upper 12 Inches
No Recorded Data Available —Water Marks
Drift Lines
_azithment Deposits
Reid observations: reinags Patterns in Wetlands
Secondary I 'estate(2 or more required):
Depth of Surface Water. NJ I G fin.? died Root Channels in Upper 12 Inches
ater-Stained Leaves
Depth to Free Water in Pit: NI(c fn.) —Local Soil Survey Data
—FAC-Neutral Test
Depth to Saturated Sod: \LC (in.) ,Other (Explain in Remarks)
Remarks: SC,Q'C c-`^--Sy;..,€ , �GO\ -fir" ... ci, "C-. -�t�7.4.....ai
SOILS •
Map Unit Name
(Series and Phase):` - - '.Drainage Class: .. .
... Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
profile Description:
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
finches) Horizon (Mussel) Moist) (Mussel) Moist) Abundance/Contrest Structure. etc.
c-y 1„e Y.-Q._ / \ ;c 1R ` . 9, ��/n �.� C\re -
/t ar , Lk /9-1 in
b/ GD Io \C`11 e
\'-2D4c . i1 . \�'t'Z 3/1 Icy AD°(n
Hydric Soil Indicators:
_Histosol _Concretions
Hist Epipedon _,High Organic Content in Surface Layer in Sandy Soils
_Sulfidic Odor Organic Streaking in Sandy Soils
Aquic Moisture Regime _Listed on Local Hydric Soils list
(educing Conditions Listed on National Hydric Soils List
Gleyed or Low-Chroma Colors - Other (Explain in Remarks)
Remarks:'tn O�-15 1f.d `rob°c t_;_ .:[.:.r
WETLAND DETERMINATION
Hydrophytic Vegetation Present? C''No (Circle) (Circle)
Wetland Hydrology Present? as No
Hydric Soils Present? es No Is this Sampling Point Within a Wetland? sa No
Remarks: -W. -told waC SNkt,E . oVPH oc L vW''
•
N1► 4 )4
Approved by HQUSACE 2i92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MILUILt2t- L Date: A Pea 1,O? ?Bo l
Applicant/Owner: RMCe- ACC2ff6-e.'ry t 4t usr S County: wgt�-,
Investigator M-' Sieve -/ sr.A. a AJAGZ State: cao2dL0
Do Normal Circumstances exist on the site? Yes No Community ID: y,,r,4IiE
is the site significantly disturbed (Atypical Situation)? Yes o . Transect ID:
Is the area a potential Problem Area? Yes 9 - Plot ID: 005'
llf needed, explain on reverse.)
VEGETATION
Dominant Plant Species
Stratum Indicator Dominant Plant Species Stratum Indicator
Jirelle3 FLtC s.
2.a4MAA45 Atan.tflt NA Ca _la flea)'k- 10.
a. L- - d 'fit r...caa- Cra..i S tl5; V 11.
4.ONO PNO'RA)M U rdril la`N'-'1 t'1tat �A't , 12.
5. 13.
8. 14.
7. 15.
8. 18.
Percent of Dominant Species that are OBL.FACW or FAC \G^ J
(excluding FAC-1.
Remarks:
HYDROLOGY
_Recorded Data(Describe in Remarks): Wetland Hydrology Indicators:
_Stream,Lake,or Tide Gauge Primary Indicators:
Aerial,Photographs _Ipundated
Other stSaturated in Upper 12 Inches
No Recorded Data Available - —Water Marks
Drift Lines
Sediment Deposits
Reld Observations: rainage Patterns in Wetlands
- Secondary stators(2 or more required):
Depth of Surface Water. W A (in.) Oxidized Root Channels in Upper 12 Inches
77 Water-Stained L
Depth to Free Water in Pic ( fin.) _Local Soil Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: \CM fin.) _Other (Explain in Remarks)
Remarks:
.
SOILS
Map Unit Name
(Series and Phase): Drainage Class:
Feld Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description: .
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
(inches) Horizon (Munson Moist) (Mansell Moist) Abundance/Contrast Structure, etc.
7 [D 1 `I �2/ �.GY� '% I(o \I1c10 L\ r .,` — ` car
tics c21 SCNN.rse,
jt u S ?-5Y2* teat
SAY
S-22 B w
14- �C 5/ u,Av — \P le-a"
22---zit C -rte tt /3 •
d
Hydric Soil Indicators:
_listosol _Concretions
_Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfide Odor _Organic Streaking in Sandy Soils
_r(uic Moisture Regime - —Listed on Local Mythic-Soils List
ucing Conditions —Listed an National Hydric Soils List
leyed or Low-Chrome Colon Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? del' No (Circle) (Circle)
Wetland Hydrology Present? e-, No
Hydric Sods Present? Y, o Is this Sampling Point Within a Wetland? Yea :No
o
Remarks: DCAINAGC 'swA1,a plii(.e,a Ia . WtPt'H eF JuRt5 cs1te
Sr,ttLC 12.S For AT III IS OIIhtT
NIF@N 1(o
Approved by HOUSACE 2192
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: IN1L v mot,) S • Date: keel L. o2,, 2001
Applicant%Owner: County: v,l,al_t
Investigator: )v1-s-s&vttc,. /¢-A-StutwGE State: cot.elczAr-orin
Do Normal Circumstances exist on the site? 0 No Community ID:
Is the site significantly disturbed (Atypical Situation)? 'es Transect ID:
Is the area a potential Problem Area? Yes o Plot ID: coca
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
PrCD.A 9.
urtsPu5 Raze. rACW io.
3.Cifa.n dou.glts-aii otazib oat. 11.
12.
5. 13.
8. 14.
7. 15.
8. 18.
Percent of Dominant Species that are OBt.,FACW or FAG
(excluding FAC-). W
eb
Remarks: V utirmrt.orl UAI7a w.› Rcacti IJT ol$ M CRO Ettes4a4NP141C,
HYDROLOGY
_Recorded Data(Describe in Remarks): Wetland Hydrology Indicators: 1•.,j0
_Stream,Lake,or Tide Gauge Primary Indicators:
Aerial,Photographs _Inundated
Other _Saturated in Upper 12 Inches
No Recorded Data Available _Water Marks
Drift Lines
Sediment Deposits
Reid Observations: _Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. Ski.)rim.) _Oxidized Root Channels in Upper.12 Inches
_Water-Stained Leaves
Depth to Free Water in Fit N . (in.) _Local Sod Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: N/pc (in.) _Other (Explain in Remarks)
Remarks: P.4 - 'ctc' •
•
•
SOILS
Map Unit Name
(Series and Phase): Drainage Class:
Feld Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description:
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
(inches) Horizon (Monsen Moist) (Mussel) Moist) Abundance/Contrast Structure. etc.
tr
Hydric Soil Indicators•. 0 LTG
Histosol _Concretions
_Kale Epipedon _High Organic Content in Surface Layer in Sandy Soils
_Sulfide Odor _Organic Streaking in Sandy Soils
_Aquic Moisture Regime _Listed on Local Hydric Soils List
_Reducing Conditions _Listed an National Hydric Soils List
_Gleyed or Low-Chroma Colors _Other (Explain in Remarks)
Remarks: -
WETLAND DETERMINATION
Hydrophydc Vegetation Present? et, No (Circle) (Circle)
Wetland Hydrology Present? 'es
Hydric Soils Present? Yes `P Is this Sampling Point Within a Wetland? Yes 70
Remarks: SMALL-P-t7C A01WtEICO (XV laAtop VtStkiNer T LAC.g Stzac
cep alas-I2.)AA.43 NyectnAkmc, Arty Ktrn,lzal>9am 1s2.0607el> cHkNtua,
RSA . Ai?&dTO SSfl\ knwPreS Mtn 5A-Nby ' J N0VNC-+az
Cerr-r6-0't4 D$ A-M COST COSTUr W)L4644 VN TDLY
Titres
FrIVeta 14,I$
Approved by HQUSACE 2/92
1
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: NHL-I-t\caR II Date: Mtt4 6r relit
Applicant/Owner: 12MC/AGGRFS ATF ttminritICS County: WELD
Investigator: M.S.5AVAG E F v n SMAC E State: CoI.O P%
yl
vstp¢
Do Normal Circumstances exist on the site? `P No Community ID: site_
Is the site significantly disturbed (Atypical Situation)? � Plot Transact ID: 001Is the area a potential Problem Area? Yes o
- (If needed, explain on reverse.)
VEGETATION _ _ _
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
.,,.d..
1. s s-kyd 1� aeL Fbt'al 9.
2 10.
11.
4 12.
5. 13.
6. 14.
7. 15.
9. 16.
Percent of Dominant Species that are O9L.FACW or FAC �y
(excluding FAC-1. _(p
Remarks: "14ttEb,,) 13AI,J'b (ZSt Wtbt= AT\VTOatatT Olfg nMflo#NIT<C vlX-,efl VOt%1
ALHN6, 9 tats of *4WD CTV P-7 3q4,-
_
HYDROLOGY
Recorded Data (Denning in Remarks): Wetlandd.
ard Hydrology Indicators: AVI
—
Stream a Lake.or Tide Gauge Primary Indicators:
—
_Aerial,Photographs _Inundated
Other Saturated in Upper 12 Inches
No Recorded Data Available —Water Mara
_Drift Lines
Sediment Deposits
Field Observations: Drainage Patterns In Wetlands
Secondary Indicators 12 or more required):
Depth of Surface Water: A 5n.) _Oxidized Root Channels in Upper 12 Inches
_Water-Stained Leaves
Depth to Free Water in Pit: N A cm.) —Local Sal Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: N/Pt 6n.) _Other(Explain in Remarks)
Remarks: buW9rr Flan\ Rt Di AG. Ftna:3 Pt?m.12DC wAte FO2 tom C-tt- 5-5
•
•
•
SOILS
Map Unit Name .. . .
(Series and Phan): - -. Drainage peas:
Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Descriotlon:
Depth Matrix Color Mottle Colors Mottle Texture, Concredons,
inches Horizon (Munson Moist) (Munson Moist) Abundence/Contrast Structure. etc.
te-ts 0-$1-
0-4" A 354111/I MId* cI,AYJ FRGRAW12ettS
4- S 'SYR 3/I WIC 414 5,a CIA` ) k!teer7cMsa WES
Hydric Soil Indicators: No1c
—Histosol _Concretions
—Histic Epipedon —'doh Organic Content in Surface Layer in Sandy Soils
—Sulfide Odor —Organic Streaking in Sandy Soils
Aquic Moisture Regime _Listed on Local Hydric Soils list - ,....
_Reducing Conditions —Listed on National Hydric Soils List
_Gleyed or Low-Chrome Colors _Other(Explain in Remarks)
Remarks:
•
WETLAND DETERMINATION
Hydrophydc Vegetation Present? Ye No (Circle) (Circle)
Wetland Hydrology Present? es
Hyddo Soils Present? Yes o Is this Sampling Point Within a Wetland? Yes CIP
Remarks: ROAD AND AC•vlieCj It oAT'r3a wut j.f MB%NE wcrIA Ht-AV`l
Gcr'+Y TO FOSTIZTZ 1“-PIEOPM-111C VarrencTL014ALASC RBAt
MAaG11PS.
NI$cow at.L #21) ?Z
Approved by HQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MILLIK N 1S Date: MAROH GI tact
Applicant./Owner: RMc./AGGR Fr;ATP lHbOSTRtCS County: WELD
Investigator 4A.S.5AVAGE/ E.A. SMAGE State: CottRA-On
F
Do Normal Circumstances exist on the site? ® No Community ID: soefraras
Is the site significantly disturbed (Atypical Situation)? Yes Transect ID:
Is the area a potential Problem Area? Yes hI7 Plot ID:
hf needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1.T1fIA Or,ous►nCeltli "Ma r._ 9.
2.
10.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
B 16.
Percent of Dominant Species that ere OBL.FACW or FAC
lexclud'ing FAC-1.
Remarks: ICRN¢R- ec AG. t: em '04/CA'flp 4 », leettorn of x.ew Sci'5Vws:101ra) al
Peming.totpdtpin, Rx.v6ot-vyti Ath Sw1TC.HEieA0-4
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
_Stream,Lake.or Tide Gauge Primary Indicators:
_Aerial,Photographs _Inundated
Other Saturated in Upper 12 Inches
No Recorded Data Available ,Water Marks
ms's Drift Lines
Sediment Deposits
Feld Observations: _Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. N A (in.) _Oxidized Root Channels in Upper 12 Inches
_Water-Stained Leaves
Depth to Free Water in lit OM (In.) _Local Sod Survey Date
_FAC-Neutral Test
Depth to Saturated Sod: N/A (In.) Other (Explain in Remarks)
Remarks: a'ivparcC Oir AG F11;1.-T) 0140 ittE3C-FLTUrt-3 RJNOPF &,5ttniC.Le 11%) >
�_ 1lCASF6h1• MO'S Mfr( r,z ,asT 114 14CA L.t7ve'D ARCS . OF;?? wave PRs►+TS
•
SOILS
Map Unit Nana
(Series and Phase): . •. - Drainage Class:
.. . : Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
profile Description:
Depth Matrix Color Mottle Colors Mottle Texture, Concretions,
(inches) Horizon NMunsefl Moist) (Munsell Moist) Abundence/Contrest Structure. etc.
WXISo.M
A les%it3A M�. mar' )a'Je ctl1Yfr to?mai ors
9.SYR
r. 11 R 9.vtt r/t zS/ £1LYy in-is°l c41r'? waa, IAo1Sr
18-221a 'B 9.S-te.3rI 7S'424/( to7Tl.8Swho QtAIR(WSJ, MStom-
Hydric Soil Indicators:
_Histosol _Concretions
Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfide Odor _Organic Streaking in Sandy Soils
_Apulc Moisture Regime _listed on Local Hydric Soils List
X.Reducing Conditions listed on National Hydric Soils Ust
Gleyed or Low-Chrome Colors _Other (Explain in Remarks)
Remarks: rrotinv So lerAC¢10 2.'r t16y.l1.1.
WETLAND DETERMINATION
Hydrophytic Vegetation Pr ? No (Circe) (Circle)
Wetland Hydrology Present? No
Hydric Soils Present? No Is this Sampling Point Within a Wetland? Yss No
'.; Remarks: CAT1AtL/PRAl2.lfG C&Rz. C-P-ASS .141PTLA Scrt),TEt t \ CaSsNfrre„
of PC FiZW AalADIa-r-O I R A116%.3 Dira ve>, APPL'.Lg‘ iSotA.1 tb
` N i leas avt * _
Approved by HOUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
11987 COE Wetlands Delineation Manual)
Project/Site: MILLIKE.N 4 Date: MAt .44 (o, za
Applicant%Owner: RMC/Aria pEC;paw tNbt)STTttCS County: WELD
Investigator: pa.S•skVAC,E/ E.A. SMACZE State: CAUORATf
vfa b
Do Normal Circumstances exist on the site? 0 N Community ID: ' etc$/
Is the site significantly disturbed (Atypical Situation)? Yes ® Transect ID:
Is the area a potential Problem Area? Yes Ca) Plot ID: 00',
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1.T1ploG cv,us at HCZe. eaL 9.
2. 10.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
n 8. 18.
Percent of Dominant Species that are 061.FACW or FAC
(excluding FAC-). Kola
Ramada: carr&t%.$ totem fatz E InTicaStaNt PPM 2arn.V excAVAT{Z1) 8NJ'1kt
A b Pt-MI .
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
_Stream,Lake,or Tide Gauge Primary Indicators:
_Aerial,Photographs _Inundated
... Other 4Satureted in Upper 12 Inches
No Recorded Data Available _Water Marks
_Drift Unes
Sediment Deposits
Reid Observations: _-Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. 3.1/A, (in.) _Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Depth to Free Water in Pit: IS" fin.) Local Soil Survey Data
u FAC-Neutral Test
Depth to Saturated Soil: 3 (in.) _Other (Explain in Remarks)
Remarks:
r
SOILS
Map Unit Name
(Series and Phan,: . - - ., Drainage Class:
Taxonomy(Subgroup): '. Feld Observation
Confirm Mapped Type? Yes No
Profile Description:
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
finches) Horizon JMunsell Moist) (Munich Moist) Abundance/Contrast Structure, etc.
O-!3" A .syR3/4 fig- otWj vi 0-M-
3-1S" _ '4:s Y K 'e/; Selo etrt t eS SAID vii SeSa STFhPKS
IS-q i" Ss__ 'IS Y 2 si3 3flo .smsAts SAND `U/ Om 5TitED,1L,S
Hydric Soil Indicators:
_Histosol _Concretions
_Hisdc Epipedon Hiph Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor X Organic Streaking in Sandy Soils
K Aquic Moisture Regime _Listed on Local Hydric Soils List
_Reducing Conditions _Listed on National Hydric Soils List
_Gleyed or Low-Chrome Colon _Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Presem? taw No (Circle) (Circle)
Wetland Hydrology Present? �C No
Hydric Soils Present? 4CR No Is this Sampling Point Within a Wetland? a No
Remarks: C.P•tfl)L_ wlCt1,Aiat) )t.J PWAVATtrl) Art:N. N0SVItFACW Cal4Weetir0N r0
5. P4)cTfir EarYlre.,J •••.appt SE.
a.YMptf> fa9rl.it j
Approved by HQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MI W-t C .N II Date: tArrC ( CP. 7cc
Applicant/Owner: 12MC./Ana 2EG;ATF (NbuST1ZtES County: WELD
Investigator: M.S.SAVACIE / c. e- csvoEtE State: ('ntnl?KtC
MlApby)
Do Normal Circumstances exist on the site? ® No Community ID: swA.L..13
Is the site significantly disturbed (Atypical Situation)? Yes ® Transect ID:
Is the area a potential Problem Area? Yes O Plot ID: c04-
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species
Stratum Indicator Dominant Plant Species Stratum Indicator
1.D.M-cA.lw sfca%b& N 199) 9.
2 10.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
16.
Percent of Dominant Species that are 081.. FACW or FAC(excluding FAC-1. 103.10
Remarks: ASS PWNGI ESTW W71'DSD PCnt, KeeiN Co2V P oc MS DM") AND
Ate/trsc/&S F►gSPS-
HYDROLOGY .
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: NeNuli
_Stream, Lake,or Tide Gauge Primary Indicators:
_Aerial,Photographs _Inundated
Other _Saturated in Upper 12 Inches
No Recorded Data Available _Water Marks
Drift Lines
Sediment Deposits
Reid Observations: Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Depth of Surface Water: fin.) _Oxidized Root Channels in Upper.12
Water-Stained Leaves
Depth to Free Water in Pit: N A tin.) _Local Sod Survey Data
_-FAC-Neutral Test
Depth to Saturated Soil: N A din.) _Other (Explain in Remarks)
Remarks: svnfltr tams!" DJs= TO 6CP•tTSN v µtest•^
•
•
SOILS
Map Unit Name
Medea and Phan$t .•- . Drainage Cass:
Taxonomy • • Reid Observations ,
(Subgroup):
Confirm Mapped Type? Yes No
Profile Descriodont
Depth Met&Color Mottle Colors Mottle Texture, Concretions,
inches Horizon (Munson Moist) (Munson Moist) Abundance/Contrast Structure, etc.
O-2" A 9:540 0.M.►bNtE wlrur.AY)rrneopgu.1
2-4" GI I s VC All uoum pLAy)i.(1TLe a.m..
4-8" C . wit 4/z. Nina ctq\(ei skl3
8- l8" C3 � Syc sp. IVbNIZ skim
19-2a+" C4 *.5Y2 4-/z- NON(r RN Vey Skott
Hydric Soil Indicators: tt 4t
_Histosol _Concretions
Histfc Epipedon _Hiph Organic Content in Surface Layer in Sandy Soils
_Sulfide Odor _Organic Streaking in Sandy Soils
_Aquic Moisture Regime _Listed on Local Hydric Soils List
_Reducing Conditions _Listed on National Hydric Soils List
_Gleyed or Low-Chrome Colors _Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? � (Circle) (Circle)
Wetland Hydrology Present? Yes
Hydric Soils Present? Yes Is this Sampling Point Within a Wetland? Yes 0
Remarks: l,q..,mp An" e ems Of osVtj5 VQOL Artie\
I ) ISO'pal ON-TANk
y OWMPt2b Rev. *2
Approved by HQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MIt.I.tKEN >I Date: MA¢C141 Gr rant
Applicant./Owner: MAC/AGG2EG ATE_ tNbUSTlttCS County: WELD
Investigator: M.S.SAY ACaE / E.A. SANAS E State: C0tORA
Do Normal Circumstances exist on the site? Cal No Community ID: ol,-
Is the site significantly disturbed (Atypical Situation)? Yes CEP Transect ID:
Is the area a potential Problem Area? Yes ® Plot ID: 005
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stre Indicator Dominant Plant Species Stratum Indicator
1. IM- AL titer- Oat. 9.
2. 10.
3. 11.
4. 12.
5. 13.
e. 14.
7. 15.
a. 1 e.
Percent of Dominant Species that are 051., FACW or FAC 1��
(excluding FAC-1.
Remarks:
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology locators:
_Stream, Lake,or Tide Gauge Primary Indicators:
_Aerial,Photographs _Inundated
Other Saturated in Upper 12 Inches
No Recorded Data AvSable Water Made
Drift Lines
Sediment Deposits
Reid Observations: Drainage Patterns In Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. N A (in.) _Oxidised Root Channels in Upper 12 Inches
_Water-Stained Leaves
Depth to Free Water in Pit: S(in.) _Local Soil Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: 22e (in.) _Other (Explain in Remarks)
Remarks:
•
SOILS .�
•
Map Unit Name
. , .
(Series and Phan* ., Drainage Class:
• Feld Observations
Taxonomy(Subgroup): •Confirm Mapped Type? Yes No
Profile Descriotlom
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
(inches) Horion (Muneell Moist) (Munsell Moist) Abundance/Contrast Structure. etc.
.
O-�4n B 4 YKS�L rp>� WM MOST KO O. '
4-26. k C 1 .v.5Ycc s/3 skN'D, mar
Hydric Soil Indicators: 1^x011
_Histosoi _Concretions
_Histic Epipedon _Hiph Organic Content In Surface Layer in Sandy Soils
Sulfide Odor _Organic Streaking in Sandy Soils
Aquic Moisture Regime _Listed on Local Hydric Soils List
_Reducing Conditions Listed on National Hydric Soils List
_Gleyed or Low-Chroma Colors _Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? it) No (Cirdel (Circle)
Wetland Hydrology Present? 4Q No
Hydric Soils Present? es G. Is this Sampling Point Within a Wetland? Yes 0
Remarks: THIS Ate U QWtWTS FWe.* ,elztGAT►Bl-s mit.wlavit ACCUM,WATIOIJ
vinz,uS G 1 14C(Zt sgi lC-k'A5aW- `411/4112 12-to T'12APPi 1N'R1 tSIACA'TV& 3y NC ✓.tom
tt TkC. 1< 4 An a> AG n ' CFtdzV aria) Aeovc') TD N t W. C H1'11,E Eta AZ 11-1Gt
WAS.ACciaavATED HVM4t0CIc( APR¢i1 East ire TH15 'map put HO AVRFACL
CoNNtsc1 3 To Z.PIATIV t*va9-. Ct%WWTS DRAINt1'C A6 Kb(ctDs P*O1\eat
met,K kW EOGC or rot, ARZ'3}
OLYMPUS ROU-
Approved by HQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MILLLKEN_,11 Date: MAgCF4 4, took
Applicant/Owner: RMC/AGa (ATF %HbawrejCS County: WELD
Investigator: M.S.SMIAGE / E.A. SAVA&E State: Co1.DRAbf
wrcr
Do Normal Circumstances exist on the site? Ciro No Community ID: SwAUS
Is the site significantly disturbed (Atypical Situation)? Yes CiZ Transect ID:
Is the area a potential Problem Area? Yes® Plot ID: Doc.,
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species
Stratum Indicator
1.ThthrWt5 sp,LS2}07._ ligeez .b114 8.
2 10.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
8. 16.
Percent of Dominant Species that era OBL FACW or PAC 1�P1
(excluding FAC-). 10
Remarks: *A R&I3,0$.a'DrXvWS1 S €3•111 wa n`' VIz2_ ' -FrAtSNT WetAcsa-1S).HvMMd14V
w� t3A5l 'COAlrite4..,11 Davo tr,CV s444 F1CA►,1rwrserN'1ON•
HYDROLOGY
_Recorded Data(Describe in Remarks): Wetland Hydrology Indicators:
Stream. Lake,or Tide Gauge Primary Indicators:
_Aerial,Photographs Inundated tN
_Other SC Saturated in Upper 12 Inches IN WMM1a
No Recorded Data Available _ .. _Water Marks
Drift Lines
Sediment Deposits
Reid Observations: Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. u IA 6n.) _Oxidized Root Channels in Upper 12 Inches
_Watsr•Stsined Leaves
-- -Depth to Free Water in Pit K A fin.) _Local Soil Survey Data
_PAC-Neutral Test
Depth to Saturated Sail: NIA fin.) 7yr Other (Explain in Remarks)
Remarks: APtvecta-'r G+tANNiiL.i HUNltt£X.h`( S''1 DeeP fair pea-xcs,.
•
SOILS •
Map Unit Name
(Series and Phan): Drainage Class:
-. - .. . ', Feld Observations ,
Taxonomy(Subgroup): •Confirm Mapped Type? Yes No
Profile Descriotlon:
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
mches Horizon (Munsell Moist) (Munson Moist) Abundance/Contrast Structure, etc.
O-2" • ₹5Y1= 3/1 A CLAY \MbaT'
. VK4,a. tRCWI S b°10
Z-4 Rz ,.SYe $/1 IPS/ MAN 5S. c1AYw! AteiTi t�6idy
1-sYC Si/1 is rR 4/l0 mall IS% sPIA:Pi CLAY w/ ueIUSS
tI
(o— Cr_ 44-/3 q.SVR 'f/6 tsantZt. \$'la s►d.ID tud\Tt,t35
rf-21t" C3 4,sYR 413 a 99 Des2SI 111.51Dt smut) wio'7 k►1JLSa
Hydric Soil Indicators:
_Histosol _Concretions
_Histic Epipedon _Mph Organic Content in Surface Layer in Sandy Soils
_Sulfidic Odor _Organic Streaking in Sandy Soils
A.Aduie Moisture Regime N+ Su$AN _Listed on Local Mythic Soils Ust
X Reducing Conditions Usted on National Hydric Soils Ust
X.Cloyed or Low-Chroma Colors _Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophydc Vegetation Present? giS No (Circle) (Circle)
Wetland Hydrology Present? No
Hydric Soils Present? S,No is this Sampling Point Within a Wetland? 40> No
Remarks: *il? 'DEAN AGC CAItt4 ls\. 1 iQ2 tG44. 'NZ wc.tj g
CLYMPo'? Ra.i.# S,C, •
Approved by HQUSACE 2/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987.COE Wetlands Delineation Manual)
Project/Site: MI►.I-IKEN 4
Date: *4Afd;.44 a :»
Applicant./Owner: RMC/AGGa2G ATF INbOSTTttCS County: WELD
Investigator: M.S.sAVAOC n SMAE?E State: mLa12A- )CD___
Do Normal Circumstances exist on the site? ® No Community ID:¢vea.a
Is the site significantly disturbed (Atypical Situation)? Yes C) Transact ID:
Is the area a potential Problem Area? Yes �I Plot ID: cO-7(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species
Stratum Indicator Dominant Plant Species Stratum Indicator
1.ill?Ina. lakt Pella-. SfeRi.._ 9• --... - 1
2.gnopl.B'N wt'n,++w�1.Cet1VM y 10.
3. A 11_waif- J OM 11.
4. 12.
5. 13.
e 14.
7. 15.
^ a Is.
Percent of Dominant Species that are OBI.. FACW or FAC
(excluding FAC-). Ian
Remarks: SNALE cnnmVnnty QM .c Styes er RIZ LING
HYDROLOGY
Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
—
Stream.Lake,or Tide Gauge Primary Indicators:
—
Aerial,Photographs _Inundated
—Other _L Saturated in Upper 12 Inches
No Recorded Data Available _Water Marks
Drift Una
Sediment Deposits
Reld Observations: 1,.Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water: Pl/Pc (in.) Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Depth to Free Water in Pit II" (In.) _Load Sol Survey Deta
FAC-Neutral_ Test
"
Depth to Saturated Soil: `I" On.) .0y_Other(Explain in Remarks)
Remarks: ALEAL MAT-) "ALT ctwSThZ\
•
SOILS
Map Unit Name
(Series and Phan* Drainage Class:
. '.. Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
Profile Description;
Depth Matrix Color Mottle Colon Mottle Texture, Concretions,
finches) Horizon (Mumel Moist) (Munson Moist) AbundancelContrast Structure, etc.
0-4" A 4.s,'42 7.7/ {d f.Y, le%0 rt MOtbT
A--4," Cam 3/ aurt� to to pot) vil asat-AN
8' 1" C2 V ALSIIIA itt Gi.AYk3Y 1glins h
JI-13II c r 3/ ¢L6Yt;t• u.A
15-16" _c__ 3/ sires at) Lee, CA-Pry
14-19+" *.Sy S/+4 ¢LaY co,“-r) j hut$cbaV PAD
Hydric Soil Indicators:
_Histosol _Concretions
_Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor '7y 4 Organic,Streaking in Sandy Soils
Aduio Moisture Regime Listed on Local Hydric Soils List
Reducing Conditions —Listed on National Mythic Soils List
Gleyed or Low-Chrome Colors Other(Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation etation Present? No (Circle) (Circle)
Yd g
Wetland Hydrology Present? a No
Hydric Soils Present? No Is this Sampling Point Within a Wetland? ® No
Remarks:
oa-yMA,S Rau.St _
Approved by HQUSACE 2192
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MILLI LEN II Date: MAelm a)?Atm
Applicant/Owner: IeMC/AGGR FC ATP tHDUSTTtiCS County: WELD
Investigator: M.S.5/WAGE/ G.A. SAVAGL E State: COLOI Kt l
YE CT'
Do Normal Circumstances exist on the site? CP Community ID: _„1 _____
Is the site significantly disturbed (Atypical Situation)? Yes Transect ID:
Is the area a potential Problem Area? Yes Plot ID: OC1Ej
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator
Dominant Plant Species Stratum Indicator
1.171s.h AS 3rcoirt_ rimes Nt fFX' ) 9.
2.glerne(non6 r.44/ yts 10-
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
B. 16.
Percent of Dominant Species that are OBL.FACW or MC
(excluding MC-). \it In
Remarks: "AMC-4 Wr MiHEib13W ADJACS JT-T7 1-2V19 3Z ht.>b Sula-C(QC$CNM31Jk?L-
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
_Stream, Lake, or Tide Gauge Primary Indicators:
Aerial,Photographs _Inundated
Other . Saturated in Upper 12 Inches
No Recorded Data Avalable ZC Water Marks
..Drift Lines
Sediment Deposits
Raid Observations: 4 Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Depth of Surface Water: l4/A. fin.) ___,Oxidized Root Channels in Upper 12 Inches
r Water-Stained Leaves
Depth to Free Water in Pit: Su (in.) _Local Sod Survey Data
_FAC-Neutral Test
Depth to Saturated Soil: O" (In.) X Other (Explain in Remarks)
Remarks: 914,X Gast
•
•
SOILS
Map Unit Nam • : ; .. . ..
(Swiss and Pheswit - •
( . - .. Drainage Gass:
" - Feld Observations
Taxonomy(Subgroup): •Confirm Mapped Type? Yes No
profile Description;
Depth Matrix Color Mottle Colors Mottle Texture, Concretions,
finches) Horizon (Munson Moist) (Munsaf Moist) Abundence/Contrest Structure, ate.
0-an A S'`ile VI rime,/M41D/ se veknVD
2-4 __ 45viz3/l hle a orriv4c1.44o.M.
—LI— _ 3,S c.J.YW
e- )2.•".. C: 3/ c-L-r( ^' Wt% !li . away)
12- VI' a sYQ 3/2. -Snarnie11
Hydric Soil Indicators:
_Histoed _Concretions
_Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils
_Sulfidic Odor �(Organic Streaking in Sandy Soils
Aquic Moisture Regime —Listed on Local Hyddc Soils List
1( Reducing Conditions _Listed on National Hydrio Soils List
Cloyed or Low-Chrome Colors _Other (Explain in Remarks)
Remarks:
•
WETLAND DETERMINATION
Hydrophydc Vegetation Present? ler No (Circle) (Circle)
Wetland Hydrology Present? lire No
Hydric Soils Present? e7 No Is this Sampling Point Within a Wetland? CI, No
Remarks: W2(TAft9W C0NNtstl-ct IV SUR-FAtIr WM'T&-GUSIVPI _
Approved by HQUSACE 242
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: MILL C J1 Date: µ eCH s z ,,
Applicant/Owner: IzMC/A(;G2FC ATF tHbOSTTttCS County: WELD
Investigator M.S.shy AGC /_�= s- COVsr E State: a_
Do Normal Circumstances exist on the site? CT9s) No Community ID: ly
Is the site significantly disturbed (Atypical Situation)? Yes ® Transect ID:
Is the area a potential Problem Area? Yes® Plot ID: rYA
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. TyQ%t 10.44,110.. 14e12 4t, ar_ 9. ._
2.41tsn4+6P(ael4A .)t1Z =Ls— to.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
S. 16.
Percent of Dominant Species that are 081.FACW or FAC
(excluding FAC-1. 1o:4
Remarks: 1)IST1t.TCT Tl1Lstch rkt.. swhlf c.awt(VWNtt'y o-N 4tg SIDC OC L13'1gg-
HYDROLOGY
_Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:
_Stream.Lake,or Tide Gauge Primary Indicators:
_Aerial,Photogrephs _Inundated
Other Saturated in Upper 12 Inches
No Recorded Data Available Water Marks
Drift Una_Sediment Deposits
Redd Observations: _Drainage Patterns in Wetlands
Secondary Indicators(2 or more required):
Depth of Surface Water. kJ/Pt fin.) _Oxidized Root Channels in Upper 12 Inches
_Water-Stained Leaves
Depth to-free-Water in Pit 5" (in.) _Local Soil Survey Data
_PAC-Neutral Test
'' Other (Explain in Remarks)
Depth to Saturated Soil: f7 On.) —
Remarks:
•
SOILS
Map Unit Name ., .. .
(Swiss and Phew*: . - _ • Drainage Class:
, Reid Observations
Taxonomy(Subgroup): Confirm Mapped Type? Yes No
profile Deseriotiont
Depth Matrix Color Mottle Colors Mottle Texture, Concretions,
(inches) Horizon (Munnsell Moist) (Munson Moist) Abundance/Contrast Structure. etc.
o-L: • tai 71/4SYR.yi zee/ .i lallii•r Xle pelw f t,AW wl Gi,BVInts,
4- 8" C_ ?-eve 3/i 2-S/ 6tSvt.W, arOZ su.vf Fxva tl
8- lI- C� 1-s•712.3/2. 2.s oias T ►iws
L / euZY ..6. ell 5kt.I1D/c4 Y) FRota..1
•
Hydric Soil Indicators:
Histosol _Concretion.
Histic Epipedon Hiph Organic Content in Surface Layer in Sandy Soils
Sulfdfc Odor _Organic Streaking in Sandy Soils
„X_Aquae Moisture Regime _Listed on Local Hydric Soils List -
Reducing Conditions Listed on National Hydric Soils List ---..
j Gloved or Low-Chrome Colors _Other(Explain in Remarks)
Remarks: cSLL'fIWG 1MEOl644oVy
•
a
WETLAND DETERMINATION as
Hydrophytle Vegetation Present? No (Cirnis) (Circle) ,
Wetland Hydrology Present? No
Hydric Soils Present? a No Is this Sampling Point W(LNn s Wetland? 'es No
Remarks: TH1S ` irttaNrt:, 15 tier SVtzeAte CEeNN
eTriab TO PI.A1'rQ-j21V1rZ
I ot_YNWS ROLFAtOS
Approved by HQUSACE 2/92
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