APPENDIX A

Wetland Delineation Report and USACE Review
Terracon Consultants, Inc. 600 Southwest 7th Street, Suite M Des Moines, Iowa 50309

P [515] 244-3184 F [515] 244-5249 terracon.com

September 12, 2019

Des Moines Industrial, LLC

512 1⁄2 East Grand Avenue

Des Moines, IA 50309

Attn: Mr. Paul Cownie Mr. Gabe Claypool

E: paulcownie@gmail.com gabeclaypool@hotmail.com

Re: Wetland Delineation Report

Des Moines Area Transloading Facility

200 SE 15th Street

Des Moines, IA 50317

Terracon Proposal No. 08197038

Dear Mr. Cownie/Claypool:

Terracon is pleased to submit the Wetland Delineation Report for the above referenced project. 

Based on the results of the delineation, 4.45 acres of wetlands identified on the subject site.

A cover letter addressed to the Rock Island District has been included with the enclosed report; 

however, a copy of this report has not been provided to the U.S. Army Corps of Engineers 

(USACE) by Terracon. A copy of the Wetland Delineation Report and attached letter should be 

submitted to the USACE for review and concurrence. The USACE can be reached at the 

following address:

US Army Corps of Engineers – Rock Island District – Regulatory Branch

Clock Tower Building, PO Box 2004, Rock Island, IL 61204-2004

Attention: Mr. Mathew Zehr

Terracon would be pleased to assist you in preparation of the Section 404 Permit Application 

and any wetland or WOUS mitigation plans that may be required by the USACE if wetland or 

WOUS impacts are proposed. Terracon appreciates the opportunity to have worked for you on 

this project. If you have any questions regarding the content of this report, please contact us at 

515.244.3184.

Sincerely,

Terracon Consultants, Inc.

Adam C. Corcoran Gerald T. Hentges, P.G.

Project Environmental Scientist Senior Associate

Enclosures

Copies to: Addressee (2)
Wetland Delineation Report 

Des Moines Area Transloading Facility

Des Moines, Iowa

September 12, 2019

Terracon Project No. 08197038

Prepared for: 

Des Moines Industrial, LLC 

512 1⁄2 East Grand Avenue

Prepared by: 

Terracon Consultants, Inc. 

Des Moines, Iowa
Terracon Consultants, Inc. 600 Southwest 7th Street, Suite M Des Moines, Iowa 50309

P [515] 244-3184 F [515] 244-5249 terracon.com

September 12, 2019

Mr. Mathew Zehr

United States Army Corps of Engineers – Regulatory Branch

Rock Island District – Clock Tower Building

PO Box 2004

Rock Island, IL 61204-2004

Re: Wetland Delineation Report

Des Moines Area Transloading Facility 

200 SE 15th Street

Des Moines, IA 50317

Terracon Proposal No. P08197038

Dear Mr. Zehr:

Terracon is pleased to submit the Wetland Delineation Report prepared for Des Moines 

Industrial, LLC. This report describes the technical criteria, field indicators, and other sources of 

information used to identify and delineate wetlands. Based on the results of the delineation, 

4.45 acres of wetlands identified on the subject site. At this time, we are requesting that you 

perform an Approved Jurisdictional Determination for the project and advise our client if a permit 

will be required for the proposed impacts.

If you have any questions concerning this report, please contact Adam at 515.244-3184 or by email at adam.corcoran@terracon.com.

Sincerely,

Terracon Consultants, Inc.

Adam C. Corcoran Gerald T. Hentges, P.G.

Project Environmental Scientist Senior Associate

ACC/GTH: N:\Projects\2019\08197038\Working Files\Wetland Delineation\08197038 Wetland Delineation Report.docx

Copies to: Addressee (2)
Responsive ■ Resourceful ■ Reliable

TABLE OF CONTENTS

Page

1.0 INTRODUCTION..........................................................................................................1

2.0 SCOPE OF SERVICES................................................................................................1

3.0 PRELIMINARY DATA GATHERING AND ANALYSIS ................................................2

3.1 Topographic Map .........................................................................................................2

3.2 National Wetland Inventory Map...................................................................................2

3.3 Soil Survey Information ................................................................................................2

3.4 Aerial Photographs.......................................................................................................3

3.5 Hillshade Map...............................................................................................................3

4.0 FIELD TECHNIQUES...................................................................................................4

4.1 Plant Community Assessment......................................................................................4

4.2 Hydric Soils Assessment ..............................................................................................5

4.3 Wetland Hydrology Assessment...................................................................................5

4.4 Classification of Wetlands ............................................................................................5

4.5 WOUS Observations ....................................................................................................6

5.0 FIELD OBSERVATIONS RESULTS ............................................................................6

5.1 Wetland Area 1 (WL-1).................................................................................................8

5.2 Wetland Area 2 (WL-2).................................................................................................9

5.3 Wetland Area 3 (WL-3).................................................................................................10

5.4 Wetland Area 4 (WL-4).................................................................................................11

5.5 Wetland Area 5 (WL-5).................................................................................................12

7.0 WETLAND AND WATERS OF THE UNITES STATES SUMMARY ............................13

8.0 RECOMMENDATIONS................................................................................................13

9.0 GENERAL COMMENTS..............................................................................................13

APPENDIX A – EXHIBITS

Exhibit 1 – Topographic Site Map

Exhibit 2 – National Wetland Inventory Map

Exhibit 3 – Soil Survey Map

Exhibit 4 – Hillshade from LIDAR and Aerial Photo

Exhibit 5 – Wetland Delineation Map

Exhibit 6 – Topographic Map with Wetland/WOUS Locations

APPENDIX B – AERIAL PHOTOGRAPHS

APPENDIX C – WETLAND DETERMINATION DATA FORMS

APPENDIX D – GROUND PHOTOGRAPHS
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WETLAND DELINEATION REPORT

DES MOINES AREA TRANSLOADING FACILITY

200 SE 15TH STREET

DES MOINES, IOWA

Terracon Project No. 08197038

September 12, 2019

1.0 INTRODUCTION

Terracon Consultants, Inc. (Terracon) was retained by Des Moines Industrial, LLC to perform a 

wetland delineation for the Des Moines Area Transloading Facility project, hereafter referred to 

as the subject site. The subject site covers approximately 40-acres and is located in the SE 1⁄4 

of Section 3 and the SW 1⁄4 of Section 2, Township 78 North, Range 24 West, Des Moines, Iowa

as depicted on Exhibit 1 in Appendix A. 

Terracon understands that Des Moines Industrial, LLC. is preparing plans to construct a multimodal transloading facility including trackage, docks, and warehousing.

The purpose of performing the wetland delineation was to assess if wetlands or Waters of the 

United States (WOUS) are present and, if so, to identify the boundaries. The wetland 

delineation was performed in accordance with the 1987 Corps of Engineers Wetlands 

Delineation Manual and the 2010 Regional Supplement to the Corps of Engineers Wetland 

Delineation Manual: Midwest Region. According to U.S. Army Corps of Engineers (USACE)

guidelines, wetlands generally have three essential characteristics: hydrophytic (wetland) 

vegetation, hydric soils, and wetland hydrology. 

2.0 SCOPE OF SERVICES 

Terracon performed the following scope of services:

◼ Reviewed map and aerial photograph resources to assist with identifying suspect 

WOUS and wetland areas at the subject site.

◼ Mobilized to the site to conduct the wetland delineation.

◼ Prepared a wetland delineation map showing WOUS and wetland areas 

identified during the site visit, if any.

◼ Completed a Wetland Delineation Report that included delineation rationale, a 

discussion of applicable data, and recommendations for the site.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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3.0 PRELIMINARY DATA GATHERING AND ANALYSIS

Prior to performing the delineation, several map and aerial photograph resources were reviewed 

to assist with identifying WOUS and wetland areas at the subject site. Each source of data is 

described in detail below.

3.1 Topographic Map

The United States Department of the Interior Geologic Survey (USGS) 7.5-Minute Topographic 

Map of the subject site was reviewed to identify drainages or WOUS within the subject area. A 

portion of the Des Moines SE, Iowa Quadrangle can be seen as Exhibit 1 in Appendix A. As 

shown on Exhibit 1, possible wetlands or WOUS were not identified on the site. The site 

consists primarily of multiple railroad tracks and spurs.

3.2 National Wetland Inventory Map

The National Wetland Inventory (NWI) Map of the subject site was reviewed to identify potential 

wetland areas. The map for the subject site was published by the U.S. Department of the 

Interior’s Fish and Wildlife Service and depicts probable wetland areas based on stereoscopic 

analysis of high altitude aerial photographs. The review of the NWI map identified several 

wetlands on the site. The identified wetlands are located in three stormwater retention basins 

constructed onsite except for a Palustrine Emergent Persistent Seasonally flooded wetland 

identified in a wooded area on the western portion of the site. During the delineation site visit, a 

wetland was not identified in this area. Wetlands were identified in the retention basins. A 

portion of the NWI map can be seen as Exhibit 2 in Appendix A.

3.3 Soil Survey Information

The Soil Survey of Polk County, Iowa was reviewed to identify soil types, including hydric soils, 

in the area of the subject site. The document was published in 2000 by the U.S. Department of 

Agriculture Soil Conservation Service, now known as the Natural Resource Conservation 

Service (NRCS). Terracon also utilized the NRCS on-line Web Soil survey (WSS)1to identify 

soil types and hydric soils. The NRCS soil survey map can be seen as Exhibit 3 in Appendix A; 

however, this map does not depict all of the identified soil types found in the WSS.

The following soil types were identified at subject site, based on an area of inquiry search 

utilizing the WSS: 

 

1 Posted at: http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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Soil Types 

Map Unit 

Symbol Map Unit Name

National Hydric

Soil List

Polk County

Hydric Soil List

220 Nodaway silt loam, 0-2% slopes, occasionally 

flooded No Yes

4000 Urban Land No No

3.4 Aerial Photographs

Terracon reviewed aerial photographs obtained from the ISU GIS Support and Research Facility 

to identify suspected wetland areas on the subject site. Aerial photographs from the 1930s, 

1950s, 1960s, 1970s, 1980s, 1990s, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 

2013, 2014, 2015, and 2017 were reviewed and have been included in Appendix B. 

Historical Aerial Photographs

Year Description

1930s-1980s The site consists of a railyard. Possible inundation is apparent one of the stormwater 

basins in several of the aerials.

1990s The railyard no longer appears active. An auto salvage yard is now located on the southcentral portion of the site. Inundation is apparent in one of the stormwater basins.

2002-2011 Significant changes from the previous aerial were not observed. The inundation in the 

stormwater basin was not apparent in every aerial.

2013 The site appears to be being cleared in preparation for the MLK Parkway project.

2014 The MLK Parkway project is underway. 

2015-2017 The MLK Parkway project appears to be completed. The now appears to be four 

stormwater retention basins onsite.

The site appears to have historically consisted of a railyard. A portion of the site appears to have 

been utilized as an auto salvage yard after the railyard was no longer in use. Circa 2013, 

preparation for the MLK Parkway project began with the project being completed in the area of 

the site in 2014 or 2015. 

3.5 Hillshade Map

Terracon reviewed the Hillshade Map of the site obtained from the ISU GIS Support and 

Research Facility to assist in identifying potential lowland areas. The Hillshade Map uses 

LIDAR data to depict the approximate topography of the site. The Hillshade Map, including a 

transparent aerial photograph, can be seen as Exhibit 4 in Appendix A. As shown on Exhibit 4, 

the site consists of uneven ground with several apparent stormwater retention basins.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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4.0 FIELD TECHNIQUES

An experienced Terracon wetland scientist used technical criteria, field indicators, historic aerial 

photographs, and other sources of information to evaluate the subject site. The evaluation 

methods generally followed the routine on-site determination method referenced in the 1987

USACE Manual and 2010 Midwest Supplement. 

Wetlands generally have three essential characteristics: hydrophytic (wetland) vegetation, 

hydric soils, and wetland hydrology. Several representative observation locations were selected 

within the suspect wetland area. Vegetation, soils and hydrology were evaluated within the

suspect area to determine if wetland characteristics were present. The techniques for 

evaluating the plant community, soils, and hydrology are described in the following sections. 

4.1 Plant Community Assessment

Suspect areas were visually observed to assess the species and absolute percentage of ground 

cover for four stratum of plant community types. Herbs were generally observed within a fivefoot radius, shrubs/saplings within a fifteen-foot radius, and trees and vines within a thirty-foot 

radius of the observation location. Several representative observation locations were selected 

within the suspected wetland area to generally represent the vegetation characteristics of the 

whole community. The vegetation for a selected area was identified using A Manual on Aquatic 

Plants (Fassett, 1957), Midwestern Wetland Flora, A Field Office Guide to Plant Species

(Mohlenbrock and Mohlenbrock), and Wildflowers and Other Plants of Iowa Wetlands (Runkel 

and Roosa, 1999). 

For a species of vegetation observed, their wetland indicator status was evaluated. Indicator 

status was assessed using the USACE North American Digital Flora: National Wetland Plant 

List and the National List of Plant Species that Occur in Wetlands - Region 3 (Reed, 1988). 

Indicator categories for vegetation are presented below:

◼ Obligate Wetland (OBL) - occur almost always (estimated probability greater 

than 99%) under natural conditions in wetlands.

◼ Facultative Wetland (FACW) - usually occur in wetlands (estimated probability 

67% - 99%) but occasionally found in non-wetlands.

◼ Facultative (FAC) - equally likely to occur in wetlands or non-wetlands 

(estimated probability 34% - 66%).

◼ Facultative Upland (FACU) - usually occur in non-wetlands (estimated 

probability 67% - 99%) but occasionally found in wetlands.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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◼ Obligate Upland (UPL) – rarely occur in wetlands, but occur almost always 

(estimated probability greater than 99%) under natural conditions in nonwetlands.

The percent cover of the stratum was assessed and dominance was evaluated. Dominant 

species were the most abundant species that accounted for more 20 percent of the absolute 

percent coverage of the stratum. The number of dominant species with an indicator status of 

OBL, FACW, and/or FAC was compared to the total number of dominant species across the 

strata. Typically, when more than 50 percent of the dominant species had an indicator status of 

OBL, FACW, and/or FAC, hydrophytic vegetation was present.

If the percentage of dominant species with an indicator status of OBL, FACW, and/or FAC was

less than 50 percent, prevalence index and morphological adaptations may have been 

evaluated to confirm if hydrophytic vegetation was present or absent.

4.2 Hydric Soils Assessment

After Terracon evaluated wetland vegetation, subsurface soil samples were collected using a 

soil probe. The samples were collected to a depth of approximately 18 inches below ground 

surface and were visually compared to Munsell Soil Color Charts (Munsell, 1994), which aided 

in the evaluation of hydric soil characteristics. The soil samples were further examined for 

hydric soil indicators including, but not limited to, histosol, thick dark surface, sandy gleyed 

matrix, sandy redox, loamy gleyed matrix, redox dark surface, and/or redox depressions. If 

these or other hydric soil indicators were observed in the subsurface soil sample, the

observation location was considered to have hydric soil.

4.3 Wetland Hydrology Assessment

Visual indicators of wetland hydrology were evaluated. Examples of primary wetland hydrology 

indicators include, but are not limited to, surface water, high water table, soil saturation, water 

marks, sediment deposits, drift deposits, iron deposits, inundation visible on aerial imagery, 

sparsely vegetated concave surface, and water-stained leaves. If at least one primary or two 

secondary indicators were observed, the observation location was considered to have wetland 

hydrology. 

4.4 Classification of Wetlands

Upon completion of the review of the three wetland criteria at each area, a wetland 

determination was made. Under normal circumstances, if one or more of the wetland criteria 

were not identified, the area was not considered to be a wetland. If all three wetland indicators 

were identified, the area was classified as wetland. Additional observations were made 

throughout the wetland area to define the wetland/non-wetland boundary, which was mapped 

with GPS technology or flagged and surveyed by traditional methods. Vegetation, soil and 
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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hydrology assessment data from at least one location within the wetland and one upland 

location outside of the wetland were recorded on a USACE Wetland Determination Form. The 

recorded data forms for the subject site can be found in Appendix C and the data point location 

can be seen on Exhibit 5 in Appendix A. The wetland locations plotted on the USGS 

topographic map can be seen as Exhibit 6 in Appendix A. 

4.5 WOUS Observations

Terracon also made observations of any site features that may be considered a WOUS. If a 

potential WOUS was identified, observations regarding its characteristics were recorded. The 

following definitions were used when describing the WOUS:

◼ Flow Characteristics:

o Perennial: contains water at all times except during extreme drought.

o Intermittent: carries water a considerable portion of the time, but ceases 

to flow occasionally or seasonally.

o Ephemeral: carries water only during and immediately after periods of 

rainfall or snowmelt.

◼ Ordinary High Water Mark: The limit line on the shore established by the 

fluctuation of the water surface. It is shown by such things as a clear line 

impressed on the bank, shelving, changes in soil character, destruction of 

terrestrial vegetation, the presence of litter and debris or other features 

influenced by the surrounding area.

◼ Bank Shape Descriptions:

o Undercut: banks that overhang the stream channel

o Steep: bank slope of approximately greater than 30 degrees

o Gradual: bank slope of approximately 30 degrees or less

◼ Aquatic Habitat Descriptions:

o Pool: deeper portion of a stream where water flows slower than in 

neighboring, shallower portions, smooth surface, and finer substrate

o Riffle: shallow area in a stream where water flows swiftly over gravel and 

rock or other coarse substrate resulting in a rough flow and a turbulent 

surface

o Run: section of a stream with a low or high velocity and with little or no 

turbulence on the surface of the water.

5.0 FIELD OBSERVATIONS RESULTS

On July 23 and 29, 2019, Terracon performed fieldwork and identified five wetland areas on the 

subject site. The areas are designated as Wetland Areas 1 through 5, as shown on Exhibit 5 in 

Appendix A. Wetland Determination Data Forms for each wetland area are provided in 

Appendix C. Wetland Determination Forms were also provided for the upland areas adjacent to 
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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the identified wetlands and suspect areas observed on the site at the time of the site 

reconnaissance or observed during the preliminary data gathering process. Ground 

photographs, included in Appendix D, provide an indication of the physical characteristics 

observed during the site visit. The following tables provide a summary the wetlands and 

drainage identified during the site reconnaissance.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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5.1 Wetland Area 1 (WL-1)

Wetland Description

Wetland ID WL-1

Size 0.76 acres

Sampling Point(s) DP-1

Photo ID 1, 2

Association w/ WOUS Wetland Area 1 appears to be isolated and not associated with a WOUS.

Wetland Description Wetland Area 1 is located in a manmade City stormwater retention basin.

NWI Map NWI map identifies WL-1 as a Palustrine Emergent Scrub-Shrub Broad Leaved 

Deciduous Seasonally Flooded Excavated (PSS1Cx)

Cowardin Classification Based on field observations, WL-1 is a Palustrine Emergent Temporarily 

Flooded Excavated (PEMAx)

Wetland Type Wet meadow with emergent areas

Vegetative Cover Dense

Dominant Wetland 

Vegetation at data point 

locations

Common Name

Dark Green Bulrush

Fox Sedge

Softstem Bulrush

Cattail

Scientific Name

Scirpus atrovirens

Carex vulpinoidea

Schoenoplectus tabernaemontani

Typha latifolia

WL Indicator

OBL

FACW

OBL

OBL

Hydrogeomorphic Class Depression

Soil Type (soil survey) Urban Land

Soil Type (field obs.) Sandy lean clay

Soil Characteristics at 

data point locations Depleted Matrix/Redox Dark Surface

Hydrology 

Characteristics at data 

point locations

High Water Table, Saturation

Hydrology Source Surface water runoff, City stormwater

Other Information 

Non-Wetland (Upland) Description

Data Point(s) DP-2

Habitat Type Grassland/Scrub-Shrub

Was there a marked difference between the wetland 

and upland

No

Was there a gradual change in vegetation between 

the wetland and upland creating a “transition zone”

No

Was there an abrupt topographic change between 

the wetland and upland

Yes

Wetland Area 1 appeared to be isolated and not associated with a WOUS.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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5.2 Wetland Area 2 (WL-2)

Wetland Description

Wetland ID WL-2

Size 2.45 acres

Sampling Point(s) DP-3

Photo ID 3, 4

Association w/ WOUS Wetland Area 2 appears to be isolated and not associated with a WOUS.

Wetland Description Wetland Area 2 is located in a manmade City stormwater retention basin.

NWI Map

NWI map identifies WL-2 as consisting of three wetland zones: A Palustrine 

Emergent Scrub-Shrub Broad Leaved Deciduous Seasonally Flooded 

Excavated (PSS1Cx), a Palustrine Emergent Persistent Semipermanently

Flooded Excavated (PEM1Fx) and a Palustrine Emergent Persistent 

Seasonally Flooded Excavated (PEM1Cx)

Cowardin Classification Based on field observations, WL-2 is a Palustrine Emergent Temporarily 

Flooded Excavated (PEMAx)

Wetland Type Wet meadow with emergent areas

Vegetative Cover Dense

Dominant Wetland 

Vegetation 

Common Name

Dark Green Bulrush

Softstem Bulrush

Yellow Nut Sedge

Scientific Name

Scirpus atrovirens

Schoenoplectus tabernaemontani

Cyperus esculentus

WL Indicator

OBL

OBL

OBL

Hydrogeomorphic Class Depression

Soil Type (soil survey) Urban Land

Soil Type (field obs.) Sandy Lean Clay

Soil Characteristics Depleted Matrix/Thick Dark Surface

Hydrology 

Characteristics High Water Table, Saturation

Hydrology Source Surface water runoff, City stormwater

Other Information 

Non-Wetland (Upland) Description

Data Point(s) DP-4

Habitat Type Grassland, Scrub-Shrub

Was there a marked difference between the wetland 

and upland

No

Was there a gradual change in vegetation between 

the wetland and upland creating a “transition zone”

No

Was there an abrupt topographic change between 

the wetland and upland

Yes

Wetland Area 2 appears to be isolated and not associated with a WOUS.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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5.3 Wetland Area 3 (WL-3)

Wetland Description

Wetland ID WL-3

Size 0.44 acres

Sampling Point(s) DP-5, DP-6

Photo ID 5-7

Association w/ WOUS Wetland Area 3 does not appear to be associated with a WOUS 

Wetland Description

Wetland Area 3 is located in a somewhat poorly drained area within the former 

railyard. The subsurface appeared to be fill material but did meet the redox 

dark surface hydric soil criteria. An ephemeral drainage that appeared to be a 

portion of the railroad ditch runs from just north of the wetland, through the 

wetland and discharges to the City stormwater retention basin.

NWI Map Not identified

Cowardin Classification Palustrine Emergent Temporarily Flooded (PEMA)

Wetland Type Wet Meadow with a scrub-shrub portion of the northeast portion

Vegetative Cover Dense

Dominant Wetland 

Vegetation 

Common Name

Reed Canary Grass 

Dark Green Bulrush

Scientific Name

Phalaris arundinacea

Scirpus atrovirens

WL Indicator

FACW

OBL

Hydrogeomorphic Class Fringe

Soil Type (soil survey) Urban Land

Soil Type (field obs.) Sandy clay that appeared to be fill

Soil Characteristics Redox dark surface

Hydrology 

Characteristics High Water Table, Saturation

Hydrology Source Surface water runoff

Other Information 

Non-Wetland (Upland) Description

Data Point(s) DP-7, DP-8

Habitat Type Grassland to the south and woodlands to the north.

Was there a marked difference between the wetland 

and upland

No

Was there a gradual change in vegetation between 

the wetland and upland creating a “transition zone”

No

Was there an abrupt topographic change between 

the wetland and upland

No

Wetland Area 3 appears to be isolated and not associated with a WOUS.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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5.4 Wetland Area 4 (WL-4)

Wetland Description

Wetland ID WL-4

Size 0.25 acres

Sampling Point(s) DP-10

Photo ID 8

Association w/ WOUS Wetland Area 4 appears to be isolated and not associated with a WOUS.

Wetland Description Wetland Area 4 is located in a manmade City stormwater retention basin.

NWI Map Not identified

Cowardin Classification Palustrine Emergent Persistent Seasonally Flooded Excavated (PEM1Cx)

Wetland Type Emergent and wet meadow

Vegetative Cover Dense

Dominant Wetland 

Vegetation 

Common Name

Cattail

Softstem Bulrush

Scientific Name

Typha latifolia

Schoenoplectus tabernaemontani

WL Indicator

OBL

OBL

Hydrogeomorphic Class Depression

Soil Type (soil survey) Urban

Soil Type (field obs.) Muck followed by a layer of sand and then silty clay

Soil Characteristics 2 cm Muck and Depleted Matrix

Hydrology 

Characteristics High Water Table, Saturation, Aquatic Fauna, Hydrogen Sulfide Odor

Hydrology Source Surface water runoff and City stormwater

Other Information 

Non-Wetland (Upland) Description

Data Point(s) DP-11

Habitat Type Grassland

Was there a marked difference between the wetland 

and upland

No

Was there a gradual change in vegetation between 

the wetland and upland creating a “transition zone”

No

Was there an abrupt topographic change between 

the wetland and upland

Yes

Wetland Area 4 appears to be isolated and not associated with a WOUS.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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5.5 Wetland Area 5 (WL-5)

6.0 Wetland Description

Wetland ID WL-5

Size 0.55 acres

Sampling Point(s) DP-12, DP-14

Photo ID 9-10

Association w/ WOUS Wetland Area 5 appears to be isolated and not associated with a WOUS.

Wetland Description Wetland Area 5 is located in a manmade City stormwater retention basin.

NWI Map Not identified

Cowardin Classification Palustrine Emergent Persistent Seasonally Flooded Excavated (PEM1Cx)

Wetland Type Emergent and wet meadow

Vegetative Cover Moderate to dense

Dominant Wetland 

Vegetation 

Common Name

Reed Canary Grass

Scientific Name

Phalaris arundinacea

WL Indicator

FACW

Hydrogeomorphic Class Depression

Soil Type (soil survey) Urban

Soil Type (field obs.) Silty clay

Soil Characteristics Depleted Matrix

Hydrology 

Characteristics Water Stained Leaves

Hydrology Source Surface water runoff, City Stormwater, railroad ditch

Other Information 

Non-Wetland (Upland) Description

Data Point(s) DP-13

Habitat Type Grassland, woodlands

Was there a marked difference between the wetland 

and upland

No

Was there a gradual change in vegetation between 

the wetland and upland creating a “transition zone”

No

Was there an abrupt topographic change between 

the wetland and upland

Yes

Wetland Area 5 appears to be isolated and not associated with a WOUS.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

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7.0 WETLAND AND WATERS OF THE UNITES STATES SUMMARY

This report details the procedures used to identify wetlands on the subject site. In accordance 

with the field procedures described in this report, wetlands were identified at the subject site. 

The following table summarizes the sizes of the delineated wetlands within the subject site. 

Wetland Name Approximate Wetland Area On-site (acres)

WL-1 0.76

WL-2 2.45

WL-3 0.44

WL-4 0.25

WL-5 0.55

Total Wetland Area 4.45

8.0 RECOMMENDATIONS

According to survey results, 4.45 acres of wetlands were identified on the subject site. Only the 

USACE can make the final determination on the jurisdictional status of wetlands or drainage 

feature, and on the need for permit processing and compensatory mitigation.

A color copy of this report along with the proposed site development plan should be submitted

to the USACE for confirmation of findings and an approved USACE Jurisdictional Determination 

to evaluate whether a Section 404 Permit will be required. As part of the Section 404 Permit, if 

required, a Section 401 Water Quality Certification from the Iowa Department of Natural 

Resources may be required. 

9.0 GENERAL COMMENTS

The wetland delineation was performed using the USACE Manual and Midwest Supplement. 

The manual provides assistance for delineating wetlands based on the three criteria discussed. 

However, the manual alone may not have provided enough information to document whether or 

not the three criteria were met. Various physical properties or other visual signs used to 

evaluate whether the three wetland identification criteria areas were satisfied may not be 

straightforward, especially in disturbed or problem areas. The manual also allows the user to 

visually estimate certain indicators such as the percentage of area covered by dominant species 

for the entire community. Terracon did not attempt to identify every possible plant species and 

did not classify soil type by laboratory methods. Due to seasonal changes, Terracon cannot 

guarantee the area to exhibit or not to exhibit wetland characteristics at all times of the year. 

The limitations of this wetland delineation should be recognized.
Wetland Delineation Report

Des Moines Area Transloading Facility ■ Des Moines, Iowa

September 12, 2019 ■ Terracon Project No. 08197038

Responsive ■ Resourceful ■ Reliable 14

This report has been prepared in accordance with generally accepted scientific and engineering 

evaluation practices. This report is for the exclusive use of the client for the project being 

discussed. No warranties, either express or implied, are intended or made.
APPENDIX A

Exhibits 
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WETLAND DELINEATION

DES MOINES INDUSTRIAL

200 SE 15TH STREET

DES MOINES, IOWA

Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

TOPOGRAPHIC IMAGE FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

LEGEND

- BOUNDARY OF ASSESSED AREA

PROJECT 6,TE
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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

GIS INFO FROM NATURAL RESOURCES GEOGRAPHIC INFORMATION

SYSTEMS LIBRARY http://www.igsb.uiowa.edu/./nrgislibx/

- BOUNDARY OF ASSESSED AREA

LEGEND
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LEGEND

- BOUNDARY OF ASSESSED AREA GIS INFO FROM NATURAL RESOURCES GEOGRAPHIC INFORMATION

SYSTEMS LIBRARY http://www.igsb.uiowa.edu/./nrgislibx/
N O R T H

A P P R O XI M A T E D R A WI N G S C A L E

5 0 0'

Pr oj ect M n gr: Dr a w n By:

Fil e N a m e:

L ay o ut N a m e:

Pr oj ect N o. D at e:

E X HI BI T

0 8 1 9 7 0 3 8- T 2. d w g

E 4

9/ 1 0/ 2 0 1 9 HI L L S H A D E F R O M LI D A R

A C C J A L

0 8 1 9 7 0 3 8

W E T L A N D D E LI N E A TI O N

D E S M OI N E S I N D U S T RI A L

2 0 0 S E 1 5 T H S T R E E T

D E S M OI N E S, I O W A

C o n s ulti n g E n gi n e er s a n d S ci e nti st s

6 0 0 S W 7 T H S T R E E T D E S M OI N E S, I O W A 5 0 3 0 9

P H. ( 5 1 5) 2 4 4- 3 1 8 4 F A X. ( 5 1 5) 2 4 4- 5 2 4 9

L E G E N D

- B O U N D A R Y O F A S S E S S E D A R E A A E RI A L P H O T O F R O M I O W A G E O G R A P HI C M A P S E R V E R M AI N T AI N E D B Y

I O W A S T A T E U NI V E R SI T Y A N D MI T - htt p:// c air o. gi s.i a st at e. e d u/ m ap. ht ml
SE 12TH STREET SE 13TH STREET SE 14TH STREET SE 15TH STREET SE 16TH STREET SE ASTOR DR SE 18TH STREET SE 11TH STREET SE 9TH STREET SE 10TH STREET

MARTIN LUTHER KING PARKWAY

SCOTT AVENUE

SHAW STREET

E VINE STREET

EAST COURT AVENUE

WL-3

(0.44 ACRES)

WL-2

(2.45 ACRES)

WL-1

(0.76 ACRES)

WL-4

(0.25 ACRES)

WL-5

(0.55 ACRES)

12

6

11 7

5

3

4

2

1

8

9

10 DP-14

DP-15 DP-16

DP-6

DP-7

DP-8

DP-5

DP-18

DP-17

DP-3

DP-4

DP-1

DP-2

DP-10

DP-11

DP-13

DP-12

DP-9

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DES MOINES, IOWA

Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

LEGEND

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- WETLAND AREA

- DATA POINT 200 SE 15TH STREET

# - PHOTO 200 SE 15TH STREET & DIRECTION
WL-3

(0.44 ACRES)

WL-2

(2.45 ACRES)

WL-1

(0.76 ACRES)

WL-4

(0.25 ACRES)

WL-5

(0.55 ACRES)

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

TOPOGRAPHIC IMAGE FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

LEGEND

- BOUNDARY OF ASSESSED AREA

- WATERS OF THE U.S. (WUS)

- WETLAND AREA
APPENDIX B

Aerial Photographs
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LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
SE 12TH STREET SE 13TH STREET SE 14TH STREET SE 15TH STREET SE 16TH STREET SE ASTOR DR SE 18TH STREET SE 11TH STREET SE 9TH STREET SE 10TH STREET

MARTIN LUTHER KING PARKWAY

SCOTT AVENUE

SHAW STREET

E VINE STREET

EAST COURT AVENUE

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600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

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- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
SE 12TH STREET SE 13TH STREET SE 14TH STREET SE 15TH STREET SE 16TH STREET SE ASTOR DR SE 18TH STREET SE 11TH STREET SE 9TH STREET SE 10TH STREET

MARTIN LUTHER KING PARKWAY

SCOTT AVENUE

SHAW STREET

E VINE STREET

EAST COURT AVENUE

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600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

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SE 12TH STREET SE 13TH STREET SE 14TH STREET SE 15TH STREET SE 16TH STREET SE ASTOR DR SE 18TH STREET SE 11TH STREET SE 9TH STREET SE 10TH STREET

MARTIN LUTHER KING PARKWAY

SCOTT AVENUE

SHAW STREET

E VINE STREET

EAST COURT AVENUE

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600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

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SE 12TH STREET SE 13TH STREET SE 14TH STREET SE 15TH STREET SE 16TH STREET SE ASTOR DR SE 18TH STREET SE 11TH STREET SE 9TH STREET SE 10TH STREET

MARTIN LUTHER KING PARKWAY

SCOTT AVENUE

SHAW STREET

E VINE STREET

EAST COURT AVENUE

NORTH

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600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html

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DES MOINES, IOWA

Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

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IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
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200 SE 15TH STREET

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

- BOUNDARY OF ASSESSED AREA AERIAL PHOTO FROM IOWA GEOGRAPHIC MAP SERVER MAINTAINED BY

IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
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200 SE 15TH STREET

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

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IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
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200 SE 15TH STREET

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

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IOWA STATE UNIVERSITY AND MIT - http://cairo.gis.iastate.edu/map.html
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200 SE 15TH STREET

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

LEGEND

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Consulting Engineers and Scientists

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Consulting Engineers and Scientists

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

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Consulting Engineers and Scientists

600 SW 7TH STREET DES MOINES, IOWA 50309 PH. (515) 244-3184 FAX. (515) 244-5249

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APPENDIX C

Wetland Determination Data Forms 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-1

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Stormwater basin Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-1

Soil Map Unit Name: Urban Land NWI Classification: Yes – PSS1Cx

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Wetland Area 1 is located in a City stormwater retention basin. Wetland Area 1 does not appear to be associated with a 

WOUS.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius)

Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 2

2

3 Total Number of Dominant Species

Across All Strata (B): 2

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Scirpus atrovirens (Dark Green Bulrush) 40 Y OBL Hydrophytic Vegetation Indicators:

2 Carex vulpinoidea (Fox Sedge) 25 Y FACW X 1-Rapid Test for Hydrophytic Veg

3 Typha latifolia (Cattail) 15 N OBL 2-Dominance Test is > 50%

4

Schoenoplectus tabernaemontani (Softstem 

Bulrush) 15 N OBL 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic Vegetation 

1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 19 95 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test.
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-1

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-3 10YR 2/1 100 Silty clay

3-18 10YR 2/1 5Y 4/1 90 D M

SA-Silty 

Clay Depletion with redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed a depleted matrix.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

X High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

X Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: NA in

Water Table Present? Yes X No Depth: 3 in

Saturation Present? Yes X No Depth: 0 in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff and City stormwater. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-2

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Basin slope Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken on the basin slope.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 0

2

3 Total Number of Dominant Species 

Across All Strata (B): 1

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 0

20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Lotus corniculatus (Birdsfoot Trefoil) 60 Y FACU Hydrophytic Vegetation Indicators:

2 Solidago canadensis (Canada Goldenrod) 10 N FACU 1-Rapid Test for Hydrophytic Veg

3 Panicum virgatum (Indian Grass) 10 N FAC 2-Dominance Test is > 50%

4 Phalaris arundinacea (Reed Canary Grass) 5 N FACW 3-Prevalence Index is ≤3.01

6 Erigeron annuus (Daisy Fleabane) 5 N FACU 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 18 90 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-2

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-10 10YR 3/2 100 Lean clay

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Rock?

Depth (inches): 10 Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-3

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Stormwater Basin Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-2

Soil Map Unit Name: Urban Land NWI Classification: Yes-PSS1Cx/PEM1Fx

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Wetland Area 2 is located in a City stormwater retention basin. Wetland Area 2 does not appear to be associated with a 

WOUS. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 2

2

3 Total Number of Dominant Species 

Across All Strata (B): 2

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1

Schoenoplectus tabernaemontani (Softstem 

Bulrush) 40 Y OBL Hydrophytic Vegetation Indicators:

2 Scirpus atrovirens (Dark Green Bulrush) 35 Y OBL X 1-Rapid Test for Hydrophytic Veg

3 Cyperus esculentus (Yellow Nut Sedge) 10 N FACW 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic Vegetation 

1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 17 85 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-3

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-8 10YR 3/1 90 2.5YR 4/6 10 C M Lean clay Redox and lots of organics

8-18 10YR 5/1 80 D M Lean Clay Depletion with redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed redox dark surface and depleted matrix.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

X High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

X Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes X No Depth: 0 in

Saturation Present? Yes X No Depth: 0 in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff and City stormwater.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-4

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Basin Slope Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken on the basin slope upland of WL-2. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 0

2

3 Total Number of Dominant Species 

Across All Strata (B): 2

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 0

20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Lotus corniculatus (Birdsfoot Trefoil) 40 Y FACU Hydrophytic Vegetation Indicators:

2 Schedonorus arundinacea (Tall Fescue) 20 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Solidago canadensis (Canada Goldenrod) 10 N FACU 2-Dominance Test is > 50%

4 Melilotus officinalis (Yellow Sweetclover) 10 N FACU 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 16 80 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-4

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-18 10YR 5/4 100 Lean clay

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-5

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Grassland Local Relief (concave, convex, none): Slightly Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-3

Soil Map Unit Name: Urban land NWI Classification: Not identified 

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Wetland Area 3 is located in a somewhat poorly drained area within the former railyard. The subsurface appeared to be fill. The 

northeast portion of the wetland appears to be a stormwater drainage ditch for the adjacent north railroad. The ditch cuts down 

through the east-central portion of the wetland and runs to the City stormwater retention basin. Data point was taken on the 

eastern portion of the wetland. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 2

2

3 Total Number of Dominant Species 

Across All Strata (B): 2

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Phalaris arundinacea (Reed Canary Grass) 80 Y FACW Hydrophytic Vegetation Indicators:

2 Scirpus atrovirens (Dark Green Bulrush) 20 Y OBL X 1-Rapid Test for Hydrophytic Veg

3 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic Vegetation 

1

10 (Explain)

50% Total Cover 20% Total Cover 20 100 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral est.
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-5

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-8 10YR 2/1 90 2.5YR 4/6 10 C M Sandy clay Redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Sand?

Depth (inches): 8 Hydric Soil Present? Yes X No

Remarks: Soil displayed redox dark surface. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

X High Water Table (A2) Aquatic Fauna (B13) X Drainage Patterns (B10)

X Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes X No Depth: 2 in

Saturation Present? Yes X No Depth: 0 in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff and the railroad ditch.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-6

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Grassland Local Relief (concave, convex, none): Slightly Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-3

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Data point was taken on the western portion of WL-3. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 1

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Phalaris arundinacea (Reed Canary Grass) 100 Y FACW Hydrophytic Vegetation Indicators:

2 X 1-Rapid Test for Hydrophytic Veg

3 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 20 100 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-6

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-10 10YR 2/1 90-95 2.5YR 4/6 5-

10 C M Sand Clay Redox-Material appeared to be fill

10-18 10YR 3/3 Material was fill and had light brown, white mottles with coal inclusions as well

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed Redox Dark Surface.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-7

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Grassland Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban Land NWI Classification: NA

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in a better drained area southwest of WL-3.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 0

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 0

20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Solidago canadensis (Canada Goldenrod) 25 Y FACU Hydrophytic Vegetation Indicators:

2 Daucus carota (Queen Anne’s Lace) 15 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Melilotus officinalis (Yellow Sweet Clover) 15 Y FACU 2-Dominance Test is > 50%

4 Unidentified Grass Species 10 N Unknown 3-Prevalence Index is ≤3.01

6 Plantago rugelii (Buckhorn Plantain) 10 N FAC 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7 Carex species (Sedge Species) 5 N FACW

8 Solanun carolinense (Ground Cherry) 5 N FACU

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 42.5 20% Total Cover 17 85 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-7

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-18 10YR 3/2 Sandy 

Clay Trace gravel and coal

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-8

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Grassland Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in a better drained area south of the eastern portion of WL-3.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status

Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 33 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Schedonous arundiancea (Tall Tescue) 20 Y FACU Hydrophytic Vegetation Indicators:

2 Phalaris arundinacea (Reed Canary Grass) 20 Y FACW 1-Rapid Test for Hydrophytic Veg

3 Ambrosia artemisifolia (Annual Ragweed) 15 Y FACU 2-Dominance Test is > 50%

4 Bromus inermis (Smooth Brome) 10 N FACU 3-Prevalence Index is ≤3.01

6 Solidago canadensis (Canada Goldenrod) 10 N FACU 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7 Asclepias syriaca (Common Milkweed) 10 N FACU

8 Toxicodendron radicans (Poison Ivy) 5 N FAC

9 Cichorium intybus (Chickory) 5 N FACU Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 47.5 20% Total Cover 19 95 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant.
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-8

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-18 10YR 3/2 100 Sandy clay Fill-trace gravel, brick, coal

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): NA Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-9

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Stormwater basin Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-4

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Wetland Area 4 is located in a City stormwater retention basin. Wetland Area 4 does into appear to be associated with a 

WOUS.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 3

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Salix exigua (Sandbar Willow) 5 Y OBL Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover 1 5 = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Typha latifolia (Cattail) 35 Y OBL Hydrophytic Vegetation Indicators:

2

Schoenoplectus tabernaemontani (Softstem 

Bulrush) 25 Y OBL X 1-Rapid Test for Hydrophytic Veg

3 Polygonum pennsylvanica (Pinkweed) 10 N FACW 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic Vegetation 

1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 14 70 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-9

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-4 10YR 2/1 95 Muck Muck with some redox

4-8 Sand Fine to medium

8-18 10YR 5/1 85 D M Silty clay Depletion with redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

X 2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed a muck surface and depleted matrix.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

X High Water Table (A2) X Aquatic Fauna (B13) Drainage Patterns (B10)

X Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) X Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) X Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes X No Depth: 0 in

Saturation Present? Yes X No Depth: 0 in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff and City stormwater.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-10

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Basin Slope Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: upland

Soil Map Unit Name: Urban Land NWI Classification: Not identified 

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken on the basin slope upland from WL-4.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 0

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 0

20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Lotus corniculatus (Birdsfoot Trefoil) 30 Y FACU Hydrophytic Vegetation Indicators:

2 Schedonorus arundinaceus (Tall Fescue) 25 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Bromus inermis (Smooth Brome) 20 Y FACU 2-Dominance Test is > 50%

4 Solidago canadensis (Canada Goldenrod) 10 N FACU 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 17 85 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-10

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-4 10YR 3/2 Sandy lean 

clay

4-18 Sandy Fill Trace gravel, brick, coal

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-11

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Stormwater basin Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-5

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Wetland Area 5 is located in a City stormwater retention basin. Wetland Area 5 does not appear to be associated with 

a WOUS. Data point was taken on the northeast portion of the wetland.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 1

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Phalaris arundinacea (Reed Canary Grass) 75 Y FACW Hydrophytic Vegetation Indicators:

2 X 1-Rapid Test for Hydrophytic Veg

3 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 15 75 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neural test. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-11

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-4 10YR 3/1 90 2.5YR 4/6 10 C M Lean clay Redox

4-12 10YR 4/1 85 D M Lean clay Depletion with redox

12-18 10YR 4/1 75 D M Lean clay Depletion with redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed redox dark surface and depleted matrix.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff, City stormwater, and the railroad ditch.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-12

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Slope Local Relief (concave, convex, none): Upland

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken on the basin slope upland to the northwest of DP-11 in WL-5.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 0

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 0

20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Bromus inermis (Smooth Brome) 10 Y FACU Hydrophytic Vegetation Indicators:

2 Solidago canadensis (Canada Goldenrod) 10 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Lotus corniculatus (Birdsfoot Trefoil) 10 Y FACU 2-Dominance Test is > 50%

4 Cirsium arvense (Canada Thistle) 5 N FACU 3-Prevalence Index is ≤3.01

6 Asclepias syriaca (Common Milkweed) 5 N FACU 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7 Ambrosia artemisiifolia (Annual Ragweed) 5 N FACU

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 9 45 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-12

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-6 10YR 3/1 100 Lean Clay Trace sand, gravel, - Fill

6-8 10YR 2/1 100 Lean Clay Trace sand, gravel, - Fill

8-18 10YR 5/6/

2.5Y 5/1

50/5

0

Lean Clay Trace sand, gravel, - Fill

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-13

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Stormwater basin Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: WL-5

Soil Map Unit Name: Urban Land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes X No

Wetland Hydrology Present? Yes X No

Remarks: Data point was taken on the southeast portion of the wetland. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 2

2

3 Total Number of Dominant Species 

Across All Strata (B): 3

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 66 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet:

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Phalaris arundinacea (Reed Canary Grass) 25 Y FACW Hydrophytic Vegetation Indicators:

2 Polygonum pensylvanica (Pinkweed) 10 Y FACW 1-Rapid Test for Hydrophytic Veg

3 Lotus corniculatus (Birdsfoot Trefoil) 10 Y FACU X 2-Dominance Test is > 50%

4 Polygonum hydropiper (Milk Water Pepper) 5 N FACW 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 10 50 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test.
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-13

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-3 5Y 5/1 95 D M

Sandy lean 

clay Depletion with redox

3-5 10YR 2/1 95 2.5YR 4/6 5 C M

Sandy lean 

clay Redox

5-8 10YR 5/3 100 Clayey 

Sand

8-18 10YR 2/1 90 2.5YR 4/6 10 C M

Sandy lean 

clay Redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) X Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed depletion and redox dark surface.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) X Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) X Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes X No

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland appears to be receiving hydrology from surface water runoff, City stormwater, and the railroad ditch.
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-14

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Lowland area Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Nodaway silt loam NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes X No Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in a basin like area on the western portion of the site. 

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 5

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 20 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Trifolium pretense (Red Clover) 20 Y FACU Hydrophytic Vegetation Indicators:

2 Dactylis glomerate (Orchard Grass) 20 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Bromus inermis (Smooth Brome) 15 Y FACU 2-Dominance Test is > 50%

4 Cichorium intybus (Chickory) 15 Y FACU 3-Prevalence Index is ≤3.01

6 Plantago rugelii (Blackseed Plantain) 15 Y FAC 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7 Taraxacum officinale (Dandelion) 5 N FACU

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 45 20% Total Cover 18 90 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-14

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-18 10YR 4/1 95 D M

Sandy lean 

clay Depletion with redox

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) X Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type:

Depth (inches): Hydric Soil Present? Yes X No

Remarks: Soil displayed Depleted Matrix.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. The area appeared to be designed to drain to the west where a stormwater culvert was 

observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-15

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Woodland Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in a wooded area just south of the railroad on the western portion of the site.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Morus rubra (Red Mulberry) 30 Y FACU Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 5

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 20 20% Total Cover 6 30 = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Lonicera tatarica (Honey Suckle) 5 Y FACU Total % Cover of: Multiply by:

2 Ribes missouriense (Gooseberry) 5 Y FAC OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover 2 10 = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Glechoma hederacea (Ground Ivy) 20 Y FACU Hydrophytic Vegetation Indicators:

2 Viola septentrionalis (Northern Woodland Violet) 15 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Urtica dioica (Stinging Nettles) 5 N FACW 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 8 40 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-15

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-10 10YR 3/1 100 Sandy clay Traces gravel, coal, glass - Fill

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Unknown

Depth (inches): 10 Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-16

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Woodland Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in a woodland area south of the railroad and west of the northern portion of WL-3.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Morus rubra (Red Mulberry) 40 Y FACU Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2 Lonicera tatarica (Honeysuckle) 5 N FACU

3 Catalpa speciose (Catalpa Tree) 5 N FACU Total Number of Dominant Species 

Across All Strata (B): 5

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 20 20% Total Cover 10 50 = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Lonicera tatarica (Honeysuckle) 15 Y FACU Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover 3 15 = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Glechoma hederacea (Ground Ivy) 30 Y FACU Hydrophytic Vegetation Indicators:

2 Parthenocissus quinquefolia (Virginia Creeper) 20 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Viola septentrionalis (Northern Woodland Violet) 10 N FACU 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 12 60 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Vitis riparia (Riverbank Grape) 5 Y FACW Hydrophytic 

Vegetation 

Present?

2 Yes No X

1

20% Total Cover 1 5 = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-16

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-14 10YR 5/4 100 Sandy clay Trace gravel, coal - Fill

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Unknown

Depth (inches): 14 Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-17

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Old railroad ditch Local Relief (concave, convex, none): Concave

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban land NWI Classification: Not identified

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes No X

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken in an old railroad ditch.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Ulmus Americana (American Elm) 35 Y FACW Number of Dominant Species that 

are OBL, FACW, or FAC (A): 5

2 Acer negundo (Boxelder) 15 Y FAC

3 Celtis occidentalis (Hackberry) 10 N FAC Total Number of Dominant Species 

Across All Strata (B): 10 4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 50 20% Total Cover 12 60 = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Cornus drummondii (Rough Leaf Dogwood) 5 Y FAC Total % Cover of: Multiply by:

2 Lonicera tatarica (Honeysuckle) 5 Y FACU OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover 2 10 = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Dactylis glomerate (Orchard Grass) 20 Y FACU Hydrophytic Vegetation Indicators:

2 Solidago canadensis (Canada Goldenrod) 10 Y FACU 1-Rapid Test for Hydrophytic Veg

3 Arctium minus (Common Burdock) 10 Y FACU 2-Dominance Test is > 50%

4 Ambrosia artemisiifolia (Annual Ragweed) 10 Y FACU 3-Prevalence Index is ≤3.01

6 Lonicera tatarica (Honeysuckl) <1m 5 N FACU 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7 Viola septentrionalis (Northern Woodland Violet) 5 N FACU

8 Cyperus esculentus (Yellow Nutgrass) 5 N FACW

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 32.5 20% Total Cover 13 65 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Vitis riparia (Riverbank Grape) 5 Y FACW Hydrophytic 

Vegetation 

Present?

2 Smilax rotundifolia (Greenbrier) 3 Y FAC Yes No X

1

20% Total Cover 1.6 8 = Total Cover

Remarks: Wetland vegetation was not dominant. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-17

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-4 10YR 3/2 100 Sandy clay Trace gravel, wood, brick

4/10 10YR 5/4 100 Sandy clay Trace gravel, coal, brick

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Unknown

Depth (inches): 10 Hydric Soil Present? Yes No X

Remarks: Hydric indicators were not observed. 

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed. 
US Army Corps of Engineers Midwest Region – Version 2.0

WETLAND DETERMINATION DATA FORM – Midwest Region

Project/Site: Des Moines Area Transloading Facility City/County: Des Moines, Polk Sampling Date: 7/23/19

Applicant/Owner: Des Moines Industrial State: IA Sampling Point: DP-18

Investigator(s): A. Corcoran/K. Johnson Section, Township Range: Sec. 2, Twp. 78N, R 24W

Landform (hillslope, terrace, etc.): Disturbed area Local Relief (concave, convex, none): None

Slope (%): Lat: 41°35’10.44’’ Long: 93°35’49.56’’ Datum: Upland

Soil Map Unit Name: Urban land NWI Classification: Not identified 

Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks)

Are vegetation N soil N or hydrology N significantly disturbed? Are “Normal Circumstances” present? Y X N

Are vegetation N soil N or hydrology N significantly problematic? (if needed, explain any answers in Remarks)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present? Yes X No

Is the Sampled Area 

within a Wetland?

Hydric Soil Present? Yes No X Yes No X

Wetland Hydrology Present? Yes No X

Remarks: Data point was taken near the overpass. Wetland vegetation was dominant in several area under the bridge; 

however, the subsurface was mostly a clay, gravel, sand mixture.

VEGETATION – Use scientific names of plants.

Tree Stratum >3” DBH (Plot size: 30’ radius) Absolute 

% Cover

Dominant 

Species?

Indicator 

Status Dominance Test Worksheet:

1 Number of Dominant Species that 

are OBL, FACW, or FAC (A): 1

2

3 Total Number of Dominant Species 

Across All Strata (B): 1

4

5 Percent of Dominant Species That 

are OBL, FACW, or FAC (A/B): 100 20% Total Cover = Total Cover

Sapling/Shrub Stratum <3” DBH or > 1 m tall (Plot size: 15’ radius) Prevalence Index Worksheet: 

1 Total % Cover of: Multiply by:

2 OBL species X 1

3 FACW species X 2

4 FAC species X 3

5 FACU species X 4

20% Total Cover = Total Cover UPL species X 5

Totals (A) (B)

Herb Stratum non-woody or woody < 1 m tall (Plot size: 5’ radius) Prevalence Index = B/A = 

1 Phalaris arundinacea (Reed Canary Grass) 80 Y FACW Hydrophytic Vegetation Indicators:

2 X 1-Rapid Test for Hydrophytic Veg

3 2-Dominance Test is > 50%

4 3-Prevalence Index is ≤3.01

6 4-Morphological Adaptations 

(Provide supporting data in 

Remarks)

7

8

9 Problematic Hydrophytic 

Vegetation 1

10 (Explain)

11 1

Indicators of hydric soil and wetland 

hydrology must be present, unless 

disturbed or problematic. 

12

50% Total Cover 20% Total Cover 20 80 = Total Cover

Woody Vine Stratum > 1 m tall (Plot size: 30’ radius)

1 Hydrophytic 

Vegetation 

Present?

2 Yes X No

1

20% Total Cover = Total Cover

Remarks: Wetland vegetation was dominant and passes the FAC-Neutral test. 
US Army Corps of Engineers Midwest Region – Version 2.0

SOIL Sampling Point: DP-18

Profile Description: (Describe to the depth needed to document the indicator to confirm the absence of indicators.)

Depth Matrix Redox Features Remarks

(inches) Color (moist) % Color (Moist) % Type1 Loc2 Texture

0-2 10YR 2/1 100 Sandy 

Clay Fill

2-14 10YR 4/36 100

Clayey 

sand/grave

l/coal/brick

Fill

1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix

Hydric Soil Indicators: Indicator for Problematic Hydric Soils3:

Histosol (A1) Sandy Gleyed Matrix (S4) Coast Prairie Redox (A16)

Histic Epipedon (A2) Sandy Redox (S5) Iron-Manganese Masses ( F12)

Black Histic (A3) Stripped Matrix (S6) Other (Explain in Remarks)

Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1)

Stratified Layers (A5) Loamy Gleyed Matrix (F2)

2 cm Muck (A10) Depleted Matrix (F3)

Depleted Below Dark Surface (A11) Redox Dark Surface (F6)

Thick Dark Surface ( A12) Depleted Dark Surface (F7) 3

Indicators of hydrophytic vegetation and 

wetland hydrology must be present, unless 

disturbed or problematic. 

Sandy Mucky Mineral (S1) Redox Depressions (F8)

5 cm Mucky Peat or Peat (S3)

Restrictive Layer (if observed):

Type: Unknown

Depth (inches): 14 Hydric Soil Present? Yes No X

Remarks: Area under the bridge or the immediate vicinity was a sandy/gravely fill material with cobble.

HYDROLOGY

Wetland Hydrology Indicators:

Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of 2 required)

Surface Water (A1) Water-Stained Leaves (B9) Surface Soil Cracks (B6)

High Water Table (A2) Aquatic Fauna (B13) Drainage Patterns (B10)

Saturation (A3) True Aquatic Plants (B14) Dry-Season Water Table (C2)

Water Marks (B1) Hydrogen Sulfide Odor (C1) Crayfish Burrows (C8)

Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Saturation Visible on Aerial Imagery (C9)

Drift Deposits (B3) Presence of Reduced Iron (C4) Stunted or Stressed Plants (D1)

Algal Mat or Crust (B4) Recent Iron Reduction on Tilled Soil (C6) Geomorphic Position (D2)

Iron Deposits (B5) Thin Muck Surface (C7) X FAC-Neutral Test (D5)

Inundation Visible on Aerial Imagery(B7) Gauge or Well Data (D9)

Sparse Vegetated Concave Surface(B8) Other (Explain in Remarks)

Field Observations:

Surface Water Present? Yes No X Depth: in

Water Table Present? Yes No X Depth: in

Saturation Present? Yes No X Depth: in Wetland Hydrology Present Yes No X

(includes capillary fringe)

Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:

Remarks: Wetland hydrology was not observed at the time of the site visit although, the area does look like a stormwater route during 

rain events (Water staining and sediment deposit on a nearby concrete access road). 
APPENDIX D

Ground Photographs 
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-1

Photo 1: View of WL-1, looking west-northwest.

Photo 2: View of the easternmost portion of WL-1, looking northeast.
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-2

Photo 3: View of the western portion of WL-2, looking northeast.

Photo 4: View of the eastern portion of WL-2, looking southwest.
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-3

Photo 5: View of WL-3, looking west from the eastern portion of the wetland. 

Photo 6: View of WL-3, looking west from the central portion of the wetland.
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-4

Photo 7: View of ephemeral drainage features that runs through WL-3 before discharging to 

a City stormwater basin.

Photo 8: View of WL-4, looking southeast.
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-5

Photo 9: View of WL-5, looking southwest.

Photo 10: View of WL-5, looking west.
WETLAND DELINEATION

Des Moines Area Transloading Facility

Des Moines, Iowa

Responsive ■ Resourceful ■ Reliable D-6

Photo 11: View of the wooded area south of the railroad on the west-central portion of the 

site.

Photo 12: View of the westernmost portion of the site, looking west.