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DATE: June 27, 2012
TRANSMITTAL
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RE: 12-014-03 / 1300 French Creek Drive ,��� �� `����
TO: Ms. Christine Mattson C�-�pF ORONO
City of Orono
FROM: Frank Svoboda
Enclosed please find:
One copy of report along with Request for Delineation Review
Other Instructions/ Comments:
Please call if anything. Thank you!
25�80 Nelsine T1rive.Suite 100 • Shorewood_MN »331
(952)471-1100(OY�icc) • (952)471-0007(fax)
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1300 French Creek Drive
Hennepin County l�'IN
Wetland Classification, Identification, and
Delineation Report
Prepared for:
Chris Dahl
By:
Svoboda Ecological Resources
Project Number 2012-014
6/21/12
The contents and format of this report are considered intellectual property and
are subject to copyright restrictions and may not be reproduced without
the express permission of Svoboda Ecological Resources.
� T
Table of Contents
ABSTRACT.................................................................................................................................................1
INTRODUCTION.......................................................................................................................................1
METHODS..................................................................................................................................................1
RESULTS....................................................................................................................................................2
DISCUSSION..............................................................................................................................................3
RECOMMENDATIONS............................................................................................................................3
CERTIFICATION......................................................................................................................................5
DATASOURCES.......................................................................................................................................6
LITERATURE REFERENCED................................................................................................................7
FIGURES:
Figure 1: Site Location Overlaid on Topographic Map
Figure 2: National Wetlands Inventory
Figure 3: Web Soil Survey-Hennepin County
Figure 4: DNR- Public Waters Map
Figure 5: Approximate Wetland Boundary and Sample Transect Location
TECHNICAL DOCUMENTS:
Photo Log
Field Data Sheets
Plant Indicator Status
Soil Series Data
Wetland Definition
T 1
ABSTRACT
Svoboda Ecological Resources (SER) visited the above referenced property on S/22/12 to
examine the site for the presence of areas meeting wetland criteria. The study parcel is located
in the city of Orono MN, Hennepin County (Figure 1). One wetland boundary was delineated at
this site. One sample transect was established along the boundary in order to characterize the
soil, vegetation, and existing hydrology within the wetland-to-upland transition zone.
INTRODUCTION
The subject parcel is approximately 1.54 acres and is dominated by turf grasses and disturbed
mesic forest species. The topography of the site slopes from east to west. The surrounding land
use is suburban consisting primarily of single family homes. The identified wetlands were
classified according to the Cowardin et al., the Circular 39 and the Eggers and Reed
classification systems and marked with pink "Wetland Delineation" pin flags. The Technical
Documents section of this report contains field data sheets, plant indicator status information,
soil survey information, and wetland definition information.
METHODS
The methods used to delineate the subject parcel are as described in the 1987 US Army Corps of
Engineers Wetlands Delineation Manual and the 2010 Midwest Regional Supplement Manual. In
the 1987 Manual, the methods used were described under the "routine" methods for sites less
than 5 acres. This methodology is followed in order to assess whether the three parameters of a
wetland are met for areas on the subject parcel. The three parameters required under normal
circumstances in order to delineate a wetland are described in the Technical Documents section.
The Midwest Regional Supplement Wetland Delineation Manual is also being utilized to
increase the accuracy of our wetland boundaries. This addendum to the original 87 Manual was
created to address the many regional differences that affect wetlands and the delineation methods
used throughout the country. The following explanations are passages from that document.
"This Regional Supplement is part of a nationwide effort to address regional
wetland characteristics and improve the accuracy and efficiency of wetland-
delineation procedures. Regional differences in climate, geology, soils,
hydrology plant and animal communities, and other factors are important to the
identification and functioning of wetlands. These differences cannot be
considered adequately in a single national manual. The development of this
supplement follows National Academy of Sciences recommendations to increase
the regional sensitivity of wetland-delineation methods (National Research
Svoboda Ecological Resources 1300 French Creek Drive
Projcct Number: 2012-014 1 Wayzata MN
1 r
Council 1995). The intent of this supplement is to bring the Corps Manual up to
date with current knowledge and practice in the region and not to change
wetland boundaries." "...This Regional Supplement is designed for use with the
current version of the Corps Manual (Environmental Laboratory 1987) and all
subsequent versions. Where differences in the two documents occur, this
Regional Supplement takes precedence over the Corps Manual for applications
in the Midwest Region."
National Wetland Inventory (NWI) maps (Figure 2), Web Soil Survey of Hennepin County map
(Figure 3), Minnesota Public Waters Inventory maps (Figure 4), and 2010 aerial photographs
were reviewed prior to the site visit to identify areas that may be wetlands. Areas illustrating
evidence of wetland conditions were examined in greater detail during the field survey.
Vegetation, soils and hydrology were examined (as outlined in the 1987 Manual) and used to
characterize wetland types and determine wetland boundaries. Sample transects were established
in representative wetland-to-upland transition zones in order to characterize the vegetation, soils,
and hydrology of the site. Transects consist of a representative upland sample point and
representative wetland sample point. Information obtained at the sainple points can be found on
the field data sheets located in the Technical Documents section.
Wetland boundaries were marked at the site by pink "Wetland Delineation" pin flags. The
wetland boundary is considered to be the topographically highest extent of the wetland basin;
areas below the staked boundary met the three required wetland criteria while areas above were
lacking in one or more of these criteria. Wetlands were classified in accordance with methods
described by Cowardin et al. (1979) and used in the NWI (e.g. PEMB, PSS1C, etc.), completed
by the U.S. Fish and Wildlife Service. The Circular 39 and Eggers and Reed classification
systems are also given. The indicator status of plants, as described in the Technical Docuinents
section, was determined using the National List of Plant Species That Occur in Wetlands —
Region 3 (Sabine 1999).
RESULTS
The National Wetland Inventory indicates the presence of one wetland within the study area
(Figure 2). This wetland was classified as PEMC.
The Web Soil Survey of Hennepin County (Figure 3) identifies one soil map unit present on the
subject property, Crowfork loamy sand. This soil unit is classified as not hydric. Soil series
descriptions are provided in the Technical Documents section.
The Minnesota Department of Natural Resources, State Protected Waters Map (Public Water
Inventory) indicates no public waters within the study area(Figure 4).
Site Visit
SER ecologists examined the subject property for areas meeting jurisdictional wetland criteria
Svoboda Ecological Resources 1300 French Creek Drive
Project Number: 2012-014 2 Wayzata MN
� T
during the site visit. One area meeting the jurisdictional criteria of a wetland was flagged and the
boundary was determined and delineated. The approximate wetland boundary is outlined in
yellow (Figure 5).
Wetland 1 is a Type 5 PUBF shallow open water pond. The pond is an expanded area fed by an
intermittent shallow ditch coming from the north. No vegetation is present within the open water
area but the depth is quite shallow. The vegetation at sample point 1-1 UP consisted of a mixed
canopy layer of green ash (Fraxinus pennsylvanical, FACW) and red oak (Quercus rubra,
FACU). The shrub understory was dominated by common buckthorn (Rhamnus cathartica,
FAC) and the herb layer was very sparse. The vegetation at sample point 1-1 WET was very
similar, again featuring a mixed canopy layer of green ash and red oak with an understory of
common buckthorn. The buckthorn was less dense than at the upland sample point, with a higher
prevalence of box elder (Acer negundo, FACW). The upland-wetland transition zone is obscure
from a vegetative standpoint. The soils and hydrology are more useful in locating it.
The soils at sample point 1-1 UP consisted of 24 inches of l0yr 3/1 loam, and 12 additional
inches of l0yr 4/3 sandy loam. The soils at sample point 1-1 WET consisted of 20 inches of 2.Sy
2.5/1 muck. From 20 to 32 inches there was a l0yr 4/1 silty clay matrix with 25% 2.Syr 3/6
matrix concentrations. No hydric indicator was present at 1-1 UP, but at 1-1 WET indicatar A1
(Histosol) was present.
Wetland hydrology was not observed at sample point 1-1 UP. At sample point 1-1 WET the
following indicators were found: A3 (Saturation), B4 (Algal Mat or Crust), B7 (Inundation
Visible on Aerial Imagery), B8 (Sparsely Vegetated Concave Surface), and B9 (Water-stained
Leaves).
Detailed soils, vegetation, and hydrology data for the delineated jurisdictional wetlands are
provided in the data sheets of the Technical Documents section.
DISCUSSION
SER completed all on-site delineations based on the three required technical criteria as outlined
by the 1987 Manual: the presence of hydric soils, a predominance of hydrophytic vegetation,
and indicators of wetland hydrology in each basin. The site visit portion of the wetland
delineation was completed on 5/22/12.
SER personnel examined the subject property for areas meeting jurisdictional wetland criteria
during the site visit and delineated the edge of one basin as being jurisdictional wetland (Figure
5). Detailed soils, vegetation and hydrology data is provided in the data sheets of the Technical
Documents section. A set of figures is provided in the Figures section.
RECOMMENDATIONS
Svoboda Ecological Resources 1300 French Creek Drive
Project Number: 2012-014 3 Wayzata MN
, ,
Activities that impact or could potentially impact wetlands are regulated at several levels of
government. In Minnesota, the two primary jurisdictions are covered at the state and federal
levels by the provisions of the following legislative actions.
➢ State jurisdiction by the Wetland Conservation Act of 1991 (WCA) administered
by the WCA Local Governmental Unit (LGU).
➢ Federal jurisdiction by the Clean Water Act of 1972 and subsequent amendments.
Wetland protection is implemented by the Corps of Engineers (Corps) with permit
certification issued by the Environmental Protection Agency.
While the wetland boundaries that SER has delineated are not official until approved by a WCA
approved local government unit (LGU), SER advises the property owner/developer to refrain
from any filling, draining, or excavating, or any impact to the area SER has delineated as
wetland. No grading or filling in wetland basins should commence until all necessary permits
have been obtained. Violation of wetland regulations may result in substantial civil and criminal
penalties. Local ordinances may regulate wetland modifications such as brush and tree removal
and burning in addition to grading and filling. Depending on the location of the property, buffers
around the wetland may also be protected. Any activities in the proximity of the wetland should
be cleared with appropriate WCA regulatory agencies. It is also advisable to have the wetland
boundary surveyed by a licensed land surveyor. Since the pin flags used along the boundary can
be vandalized or inadvertently knocked over, a GPS survey of the flags will assure the
permanence of the boundary. The client should also be aware that approved wetland boundaries
are typically valid for five years from the date of approval.
To avoid project delays associated with wetland regulations, it is essential that you acquire
necessary permits from all jurisdictional agencies before initiating activities. A WCA
Sequencing form, a WCA and Army Corps of Engineers Replacement Plan Application form,
and a DNR permit application are among the materials that you may be required to submit if
impacts are proposed far the delineated wetlands. By initiating the permit process as soon as
possible, potential costly delays to the project may be avoided.
Svoboda Ecological Resources 1300 French Creek Drive
Project Number: 2012-014 4 Wayzata MN
CERTIFICATION
Frank Svoboda completed the above-described delineation on 5/22/12. This delineation was
performed according to the procedures described by the US Army Corps of Engineers in the
1987 Wetlands Delineation Manual and the 2007 Midwest Region Supplement Wetland
Delineation Manual. The delineation meets the standards and a criterion described in these
manuals and conforms to the applicable standards and regulations in force at the time the
delineation was completed.
Report and graphics were prepared by David Haar(Wetland Ecologist I/GIS Specialist) on this
day 6/21/12. The delineation report was reviewed by Frank Svoboda, President of Svoboda
Ecological Resources. The wetland delineation was completed by Frank Svoboda and Blair
Bollig.
Client: Chris Dahl
Project Name: 1300 French Creek Drive
Project No.: 2012-014
Location: Wayzata MN
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Wetland Ecologist I/GIS Specialist
e�ic-ax�c�,�--- d'
President, Svoboda Ecological Resources
6/21/12
Date
Svoboda Ecological Resources 1300 French Creek Drive
Project Number: 2012-014 5 Wayzata MN
DATA SOURCES
Minnesota Department of Natural Resources, Public Waters Inventory Basin Delineations,
Published 7/31/2008 and retrieved from http://deli.dnr.state.mn.us
United States Fish and Wildlife Service National Wetland Inventory Map. Retrieved from
http://www.fws.gov/wetlands/Data/Mapper.html on 6/21/12.
2010 Aerial Color Photos. Publicly Distributed by MN Geo WMS Service.
Topographic maps obtained via the National Geographic Society's USA Topo service through
ESRI.
Web Soil Survey for Hennepin County, MN. Retrieved from
http://websoilsurvey.nres.usda.gov/app/HomePage.htm
Svoboda Ecological Resources 1300 French Creek Drivc
Project Number: 2012-014 6 Wayzata MN
LITERATURE REFERENCED
Cowardin, L.M., V. Carter, F.C. Golet, and R.T. LaRoe. 1979. Classification of Wetlands and
Deepwater Habitats of the United States. U.S. Fish and Wildlife Service, FWS/OBS-79/31.
103pp.
Eggers, Steve D. and Donald M. Reed. 1997. Wetland Plants and Plant Communities of
Minnesota and Wisconsin. US Army Corps of Engineers, St. Paul District. 263pp, unclassified.
Environmental Labaratory. 1987. 1987 U.S. Army Corps of Engineers Wetlands Delineation
Manual. Technical Report Y-87-1, US Army Engineer Waterways Experiment Station,
Vicksburg, Mississippi.
Gleason, H.A. and A.C. Cronquist. 1991. Manual of Vascular Plcznts of Northeastern United
States and Adjacent Canada. New Yark Botanical Garden, Bronx. 910pp.
Sabine, B. J. 1999. National List of Plant Species that Occur in Wetlands: Region 3 —North
Central (Indiana, Illinois, lowa, Michigan, Minnesota, Missouri, Wisconsin). Resource
Management Group, Inc. 77pp.
Shaw, S.P., and C.G. Fredine. 1956. Wetlands of the United States. U.S. Fish and Wildlife
Service, Circular 39. 67pp.
U.S. Army Corps of Engineers. August 2010. Regional Supplement to the Corps of Engineers
Wetland Delineation Manual: Midwest Region (Version 2.0). ERDGEL TR-10-16. Vicksburg,
MS: US Army Engineer Research and Development Center.
Svoboda Ecological Resources 1300 French Geek Drive
Project Numbcr: 2012-014 7 Wayzata MN
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THE TECHNICAL DOCUMENTATION SECTION
Field Data Sheets
WETLAND DETERMINATION DATA FORM - Midwest Region
Project/Site 1300 French Creek Dr City/County: Wayzata/Hennepin Sampling Date: 5/22/2012
ApplicanUOwner: Chris Dahl State: Minnesota Sampling Point: 1-1 Upl
Investigator(s): Frank Svoboda& Biair Bollig 3ection,Township, Range: Sec 10,T117N R23W
Landform (hillslope,terrace, etc.): Hillslope Local relief(concave, convex, none): Concave
Slope(%): 50 Lat: 44.954828 Long: -93.582585 Datum: NAD 83
Soil Map Unit NameCrowfork Loamy Sand VWI Classification: PEMC
Are climatic/hydrologic conditions of the site typical for this time of the year? Y (If no, explain in remarks)
Are vegetation , soil , or hydrology significantly disturbed? Are"normal circumstances"
Are vegetation , soil , or hydrology naturally problematic? present? Yes
SUMMARY OF FINDINGS (If needed, explain any answers in remarks.)
Hydrophytic vegetation present? Y
Hydric soil present? N Is the sampled area within a wetlan� N
Wetland hydrology present? N f yes, optional wetland site ID:
Remarks: (Explain alternative procedures here or in a separate report.)
VEGETATION -- Use scientific names of plants.
Absolute Dominan Indicator pominance Test Worksheet
Tree Stratum (Plot size: ) %Cover t Species Staus Number of Dominant Species
1 Fraxinus pennsylvanica 50 Y FACW that are OBL, FACW, or FAC: 4 (A)
2 Quercus rubra 40 Y FACU Total Number of Dominant
3 Acer negundo 15 N FACW Species Across all Strata: 5 (B)
4 Percent of Dominant Species
5 that are OBL, FACW, or FAC: 80.00% (A/B)
105 =Total Cover
Saplinq/Shrub straturc (Plot size: ) Prevalence Index Worksheet
1 Rhamnus cathartica 40 Y FAC Total%Cover of:
2 Acer negundo 15 Y FACW OBL species 0 x 1 = 0
3 Ulmus americana 1 N FACW FACW species 83 x 2= 166
4 FAC species 42 x 3= 126
5 FACU species 40 x 4= 160
56 =Total Cover UPL species 0 x 5= 0
Herb stratum (Plot size: ) Column totals 165 (A) 452 (B)
1 Arisaema triphyllum 2 FACW Prevalence Index= B/A= 2.74
2 Parthenocissus quinquefolia 2 Y FAC
3 Hydrophytic Vegetation Indicators:
4 Rapid test for hydrophytic vegetation
5 X Dominance test is>50%
6 X Prevalence index is s3.0'
� Morphogical adaptations'(provide
$ supporting data in Remarks or on a
9 separate sheet)
10 Problematic hydrophytic vegetation'
4 =Total Cover (explain)
WOOdY Vifle StfetUm (PIOt SIZe: ) *Indicators ot hydric soil and wetland hydrology must be
� present,unless disturbed or problematic
2 Hydrophytic
0 =Total Cover vegetation
present? Y
Remarks: (Include photo numbers here or on a separate sheet)
Woodnettle is common in a band about 3-10'wide above edge.
US Amy Corps of Engineers Midwest Region
SOIL Sampling Point: 1-1 Upl
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(Inches) Color(moist) °/o Color(moist) % Type" Loc" Texture Remarks
24 10YR 3/1 100 Loam
36 10YR 4/3 100 Sandy Loam
"Type:C=Concentration, D=Depletion, RM = Reduced Matrix, MS=Masked Sand Grains. "Location: PL=Pore Lining, M =Matrix
Hydric Soil Indicators: Indicators for Problematic Hydric Soils:
Histisol(A1) Sandy Gleyed Matrix(S4) Coast Prairie Redox(A16)(LRR K, L, R)
Histic Epipedon(A2) Sandy Redox(S5) Dark Surface(S7)(LRR K, L)
Black Histic(A3) Stripped Matrix(S6) 5 cm Mucky Peat or Peat(S3)(LRR K, L, R)
Hydrogen Sulfide(A4) Loamy Mucky Mineral(F1) Iron-Manganese Masses(F12)(LRR K, L, R)
Stratified Layers(A5) Loamy Gteyed Matrix(F2) Very Shallow Dark Surface(TF12)
2 cm Muck(A10) Depleted Matrix(F3) Other(explain in remarks)
Depleted Below Dark SurFace(A11) Redox Dark Surface(F6)
Thick Dark Surface(Al2) Depleted Dark Surface(F7) 'Indicators of hydrophytic vegetation and weltand
Sandy Mucky Mineral(S1) Redox Depressions(F8) hydrology must be present, unless disturbed or
5 cm Mucky Peat or Peat(S3) problematic
Restrictive Layer(if observed):
Type: Hydric soil present? N
Depth(inches):
Remarks:
Coal Cinders and Glass
HYDROLOGY
Wetland Hydrology Indicators:
Primarv Indicators(minimum of one is required;check all that apply) Secondanr Indicators minimum of two re uired
Surface Water(A1) Aquatic Fauna(B13) Surface Soil Cracks(66)
High Water Table(A2) True Aquatic Plants(614) Drainage Patterns(B10)
Saturation(A3) Hydrogen Sulfide Odor(C1) Dry-Season Water Table(C2)
Water Marks(61) Oxidized Rhizospheres on Living Roots Crayfish Burrows(C8)
Sediment Deposits(B2) (C3) Saturation Visible on Aerial Imagery(C9)
Drift Deposits(63) Presence of Reduced Iron(C4) Stunted or Stressed Plants(D1)
Algal Mat or Crust(64) Recent Iron Reduction in Tilled Soils Geomorphic Position(D2)
Iron Deposits(65) (C6) FAC-Neutral Test(D5)
Inundation Visible on Aerial Imagery(67) Thin Muck Surface(C7)
Sparsely Vegetated Concave Surface(B8) Gauge or Well Data(D9)
Water-Stained Leaves(B9) Other(Explain in Remarks)
Field Observations:
Surface water present? Yes No X Depth(inches): Wetland
Water table present? Yes No X Depth(inches): hydrology
Saturation present? Yes No X Depth(inches): present? N
(includes capillary fringe)
Describe recorded data(stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Midwest Region
WETLAND DETERMINATION DATA FORM - Midwest Region
ProjecUSite 1300 French Creek Dr City/County: Wayzata/Hennepin Sampling Date: 5/22/2012
ApplicanUOwner: Chris Dahl State: Minnesota Sampling Point: 1-1 Wet
Investigator(s): Frank Svoboda& Blair Bollig 3ection, Township, Range: Sec 10,T117N R23W
Landform (hillslope,terrace, etc.): Hillslope Local relief(concave, convex, none): Concave
Slope(%): 0 Lat: 44.954828 Long: -93.582585 Datum: NAD 83
Soil Map Unit NameCrowfork Loamy Sand VWI Classification: PEMC
Are climatic/hydrologic conditions of the site typical for this time of the year? Y (If no, explain in remarks)
Are vegetation , soil , or hydrology significantly disturbed? Are"normal circumstances"
Are vegetation , soil , or hydrology naturaliy problematic? present? Yes
SUMMARY OF FINDINGS (If needed, explain any answers in remarks.)
Hydrophytic vegetation present? Y
Hydric soil present? Y Is the sampled area within a wetlarn Y
Wetland hydrology present? Y f yes, optional wetland site ID:
Remarks: (Explain alternative procedures here or in a separate report.)
VEGETATION -- Use scientific names of plants.
Absolute Dominan Indicator pominance Test Worksheet
Tree Stratum (Plot size: ) %Cover t Species Staus Number of Dominant Species
1 Fraxinus pennsylvanica 50 Y FACW that are OBL, FACW,or FAC: 3 (A)
2 Quercus rubra 40 Y FACU Total Number of Dominant
3 Acer negundo 15 N FACW Species Across all Strata: 4 (B)
4 Percent of Dominant Species
5 that are OBL, FACW, or FAC: 75.00% (A/B)
105 =Total Cover
Saplinq/Shrub straturr (Plot size: ) Prevalence Index Worksheet
1 Rhamnus cathartica 20 Y FAC Total%Cover of:
2 Acer negundo 20 Y FACW OBL species 1 x 1 = 1
3 FACW species 85 x 2= 170
4 FAC species 20 x 3= 60
5 FACU species 40 x 4= 160
40 =Total Cover UPL species 0 x 5= 0
Herb stratum (Plot size: ) Column totals 146 (A) 391 (B)
1 Carex lacustris 1 OBL Prevalence Index= B/A= 2.68
2
3 Hydrophytic Vegetation Indicators:
4 Rapid test for hydrophytic vegetation
5 X Dominance test is>50%
6 X Prevalence index is<-3.0*
� Morphogicat adaptations*(provide
$ supporting data in Remarks or on a
9 separate sheet)
10 Problematic hydrophytic vegetation'
1 =Total Cover (explain)
Woody vine stratum (PIOt SIZe: ) `Indicators of hydric soil and wetland hydrology must be
1 present,unless disturbed or problematic
2 Hydrophytic
0 =Total Cover vegetation
present? Y
Remarks: (Include photo numbers here or on a separate sheet)
US Amy Corps of Engineers Midwest Region
SOIL Sampling Point: 1-1 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix Redox Features
(Inches) Color(moist) % Color(moist) % Type` Loc" Texture Remarks
20 2.5Y 2.5/1 100 Muck
32 10YR 4/1 75 2.5YR 3/6 25 C M Silt Clay
'Type: C=Concentration, D=Depletion, RM = Reduced Matrix, MS=Masked Sand Grains. `"`Location: PL=Pore Lining, M=Matrix
Hydric Soil Indicators: Indicators for Problematic Hydric Soils:
X Histisol(A1) Sandy Gleyed Matrix(S4) Coast Prairie Redox(A16)(LRR K, L, R)
Histic Epipedon(A2) Sandy Redox(S5) Dark Surface(S7)(LRR K, L)
Black Histic(A3) Stripped Matrix(S6) 5 cm Mucky Peat or Peat(S3)(LRR K, L, R)
Hydrogen Sulfide(A4) Loamy Mucky Mineral(F1) Iron-Manganese Masses(F12)(LRR K, L, R)
Stratified Layers(A5) Loamy Gleyed Matrix(F2) Very Shallow Dark Surface(TF12)
2 cm Muck(A10) Depleted Matrix(F3) Other(explain in remarks)
Depleted Below Dark Surface(A11) Redox Dark Surface(F6)
Thick Dark SurFace(Al2) Depleted Dark Surface(F7) 'Indicators of hydrophytic vegetation and weltand
Sandy Mucky Mineral(S1) Redox Depressions(F8) hydrology must be present, unless disturbed or
5 cm Mucky Peat or Peat(S3) problematic
Restrictive Layer(if observed):
Type: Hydric soil present? Y
Depth(inches):
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primarv Indicators(minimum of one is reauired:check all that aqqly) Seconda Indicators minimum of two re uired
Surface Water(A1) Aquatic Fauna(B13) Surface Soil Cracks(66)
High Water Table(A2) True Aquatic Plants(B14) Drainage Patterns(610)
X Saturation(A3) Hydrogen Sulfide Odor(C1) Dry-Season Water Table(C2)
Water Marks(B1) Oxidized Rhizospheres on Living Roots Crayfish Burrows(C8)
Sediment Deposits(B2) (C3) Saturation Visible on Aerial Imagery(C9)
Drift Deposits(63) Presence of Reduced Iron(C4) Stunted or Stressed Plants(D1)
X Algal Mat or Crust(64) Recent Iron Reduction in Tilled Soils Geomorphic Position(D2)
Iron Deposits(65) (C6) FAC-Neutral Test(D5)
X Inundation Visible on Aerial Imagery(67) Thin Muck Surface(C7)
X Sparsely Vegetated Concave Surface(68) Gauge or Well Data(D9)
X Water-Stained Leaves(B9) Other(Explain in Remarks)
Field Observations:
Surface water present? Yes No X Depth(inches): Wetland
Water table present? Yes X No Depth(inches): 5 hydrology
Saturation present? Yes X No Depth(inches): 0 present? Y
(includes capillary fringe)
Describe recorded data(stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Midwest Region
THE TECHNICAL DOCUMENTATION SECTION
Plant Indicator Status
INDICATOR CATEGORIES*
Obligate Wetland (OBL)—Occur almost always (estimated probabiliry >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 (estiniated probability 67% -
99%),but occasionally found in wetlands (estimated probability 1% -33%).
Obligate Upland (UPL)—Occur in wetlands in another region, but occur almost always
(estimated probability >99%) under natural conditions in non-wetlands in the region specified. If
a species does not occur in wetlands in any region, it is not on the National List.
*Reed, P.B. 1988. National list of plant species that occur in wetlands: Minnesota. National
Wetlands Inventory, U.S. Fish and Wildlife Service, St. Petersburg, Florida.
THE TECHNICAL DOCUMENTATION SECTION
Soil Series Descriptions
Acquired from Natural Resource Conservation Service Website, Official Soil Series Descriptions
CROWFORK SERIES
The Crowfork series consist of very deep,excessively drained soils that formed in glacial outwash on
stream terraces and outwash plains. These soils have rapid permeability. Slopes range from 1 to 18 percent.
Mean annual precipitation is about 29 inches.Mean annual temperature is about 46 degrees F.
TAXONOMIC CLASS: Mixed, mesic Psammentic Argiudolls
TYPICAL PEDON: Crowfork loamy sand, on a 2 percent slope, in a cultivated field.
(Colors are for moist soil unless other wise noted.)
Ap--O to 11 inches; dark brown (lOYR 3/3) loamy sand,brown (lOYR 5/3) dry; weak
very fine subangular blocky structure; very friable; few very fine roots; slightly acid;
abrupt smooth boundary. (10 to 13 inches thick)
E--11 to 20 inches; brown (lOYR 5/3) loamy fine sand, weak very fine subangular
blocky structure parting to single grain; very friable; moderately acid; gradual smooth
boundary. (0 to 30 inches thick)
E & Bt--20 to 45 inches; brown (lOYR 5/3) fine sand (E); single grain; loose; brown
(7.SYR 4/3) loamy sand (Bt), 1/4 to 3 inches thick, with thin bands of sandy loam; weak
medium subangular blocky structure; very friable; moderately acid; abrupt irregular
boundary. (15 to 40 inches thick)
Bt & E--45 to 76 inches; brown (7.SYR 4/4) loamy sand (Bt); about 4 inches apart and 1
to 2 inches thick; weak medium subangular blocky structure; brown (lOYR 5/3) sand
(E'); single grain; about 5 percent shale fragments; slightly acid; clear irregular boundary.
(0 to 3 5 inches thick)
C--76 to 80 inches; brown (lOYR 5/3) sand; single grain; loose; neutral.
TYPE LOCATION: Wright County, Minnesota; about 4 miles south of Buffalo; about
1,400 feet west and 50 feet south of the northeast corner of section 29, T. 119 N., R. 27
W.; USGS Howard Lake quadrangle; lat. 45 degrees 5 minutes 39 seconds N. and long.
94 degrees 06 minutes 00 seconds W., NAD83.
RANGE IN CHARACTERISTICS: Depth to free carbonates is typically more than 80
inches. Some pedons have carbonates in the lower part of the control section. Depth to
lamellae ranges from 10 to 60 inches. The sand size is mostly medium. The rock
fragments comprise 0 to 15 percent by volume, in the Bt and C horizons. Most rock
fragments are made up of shale. The moisture control section is moist in some or all parts
throughout the year in 6 or more out of 10 years.
The Ap or A horizon has hue of lOYR, value of 2 or 3, and chroma of 1 to 3. It is loamy
sand, loamy fine sand or sand. It is moderately acid to neutral.
The E and E' horizons have hue of lOYR or 7.SYR, value of 4 to 6 and chroma of 2 to 4.
It is sand, fine sand, loamy fine sand, or loamy sand. It is strongly acid to slightly acid.
Bw horizons are present in some pedons. It has hue of lOYR or 7.SYR, value of 3 to 5,
chroma of 2 to 4. It is loamy sand or loamy fine sand.
The Bt part consists of one or more thin (less than 3 inches thick) of irregular
discontinuous or continuous lamellae or bands that begin at depths ranging from 10 to 60
inches. They have hue of 7.SYR or lOYR, value of 3 to 6, chroma of 2 to 4. It is loamy
sand, loamy fine sand, with thin bands of sandy loam in some pedons. It is moderately
acid to neutral.
The C horizon has hue of lOYR or 2.SY, value of 4 to 6, and chroma of 2 to 4. It is sand,
coarse sand, and, or mixed with dispersed shale fragments in variable amounts. It is
slightly acid to slightly alkaline.
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: These soils are nearly level to moderately steep with
convex slope on stream terraces and outwash plains. Slopes range from 1 to 18 percent.
These sediments are of Late Wisconsin age. Elevation ranges from 900 to 1000 feet
above sea level. The mean annual air temperature ranges from 43 to 48 degrees F.. The
mean annual precipitation ranges from 26 to 32 inches. Frost-free days range from 124 to
165.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the A�us Suckercreek (P),
Comtrey, Dickinson, Dickman, Estherville, Hawick, Havelock Klossner, Litclltield,
Malardi (T), Muske�o, and Sparta soils. The well drained Angus soils are in similar
positions, but formed in formed in glacial till. The Suckercreek(P) soils are on lower
lying flood plains. The poorly drained Cohocatah, Comfrey, and Havelock soils are in
nearly level areas or slight depressions. The moderately well drained Litchfield soils are
in lower positions. The well drained Dickinson soils, somewhat excessively drained
Dickman, and excessively drained Hawick, and Sparta soils do not have argillic horizons
and are on similar landscapes.
DRAINAGE AND PERMEABILITY: Excessively drained. Runoff is negligible to
low. Permeability is rapid.
USE AND VEGETATION: Most areas of this soil are cultivated. The principal crops
are corn, soybeans, small grain, and hay. Some areas are in pasture and woodland. Native
vegetation was tall grass prairie and mixed deciduous hardwood forest-mostly oaks.
DISTRIBUTION AND EXTENT: South central Minnesota. This series is not
extensive.
MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Wright County, Minnesota, 1998.
REMARKS: This soil was previously correlated as Rasset. However, this soil did not fit
the proper classification of what is presently called Rasset. Also, most of the lamellae,
identified previously as sandy loam and sandy clay loam, is now loamy sand or loamy
fine sand due to reevaluation of texture of lamellae. Diagnostic horizon and features in
this pedon are: mollic epipedon-from the soil surface to 11 inches. Argic feature-
lamellae totaling less than 6 inches within 76 inches (E' & Bt).
ADDITIONAL DATA: Soil interpretation record number is MN0837
National Cooperative Soil Survey � � � � � � �
U.S.A.
THE TECHNICAL DOCUMENTATION SECTION
Wetland Definition
WETLAND DEFINITION
According to the 1987 U.S. Army Corps of Engineers "Wetlands Delineation Manual" (1987
Manual; the document used by all delineatars to define wetlands) a wetland is "Those areas that
are inundated or saturated by surface or ground water at a frequency and duration sufficient to
support, and that under normal circumstances do support, a prevalence of vegetation typically
adapted for life in saturated soil conditions." The Minnesota State Wetland Conservation Act
Rules, Chapter 8420, further clarifies that "...wetlands must: (1) have a predominance of hydric
soils; (2) be inundated or saturated by surface water or groundwater at a frequency and duration
sufficient to support a prevalence of hydrophytic vegetation typically adapted for life in saturated
soil conditions; and (3) under normal circumstances, support a prevalence of hydrophytic
vegetation." The 1987 U.S. Army Corps of Engineers Manual in Part II, item 24. states that,
"The interaction of hydrology, vegetation, and soil results in the development of characteristics
unique to wetlands. Therefore, the following technical guidelines for wetlands are based on the
three parameters, and dia�nostic environmental characteristics used in applyin� the technical
guideline are represented by various indicators of these parameters." It is this premise by whicll
SER ecologists has, in their professional judgment, delineated the wetlands on the subject parcel
described in this report.
Wetland Hydrology
The most important wetland criterion is hydrology. The presence and persistence of water
influences the vegetation types and changes soil morphology. Hydrology may be observed as
standing water(inundation), or may be observed as freestanding water within the soil pit or auger
hole (saturation) usually within the upper 12 inches. This is what would be considered primary
hydrology indicators. Only one primary indicator is necessary to make the determination that
wetland hydrology indeed exists. The 1987 Corps Manual also has a range of hydrologic zones
established based on period of inundation or saturation. These zones and the periods of
inundation or saturation for each can be observed in Table 1 below.
Exce ted from the 1987 Manual, H drolo ic Zones—Nontidal Areas
Zone Name Duration Comments Wetland or Not
I Permanently Inundated 100% Inundation>6.6 ft.mean Not(Aquatic Habitat Zone,or Deep Water
water de th Habitat
Semipermanently To Nearly �75 Inundation defined as
II Permanently Inundated Or <100% ��'•�feet mean water Wetland
Saturated de th
III Regularly Inundated Or �25-75% Wetland
Saturated
N Seasonally Inundated Or <12.5- Wetland
Saturated 25%
Many areas having these
V Irregularly Inundated or �5-12.5°/o hydrologic characteristics Wetland(if hydrophytic veg. and hydric
Saturated are not wetlands soils also present
Intermittently Or Never o �'eas with these
VI <5/o hydrologic characteristics Not
Inundated Or Saturated are not wetlands
A-1
The definition of appropriate hydrology according to the 1987 Manual includes two important
terms that must be clarified. First, the definition of a growing season is needed. The growing
season is defined in the 1987 Manual as: "...the portion of the year when soil temperature
(measured 19.7 inches below the surface) is above biological zero (5° C or 41° F)." According to
the 1987 Manual this period of time can be approximated by using the "starting and ending dates
for the growing season based on a 28° F air temperature threshold at a frequency of 5 years in
10." Based on this definition the growing season ranges approximately 160 days to 180 days in
the Minneapolis/St. Paul metropolitan area (160 in the northern suburbs and greater to the south).
Therefore, the required inundation or saturation to the surface for 5% of the growing season
would be 8 or 9 consecutive days that ground water would need to be at the surface or saturated
to the surface.
The second term in the appropriate hydrology definition from the above paragraph to be clarified
is "in most years". This means in 5 of 10 years hydrology must exist within a `jurisdictional
wetland" for the 8 or 9 consecutive days of the growing season. This means that one observation
date or even one whole year worth of detailed hydrology data may be deemed insufficient to
determine if appropriate hydrology exists at a given location. In the event that precipitation
events accumulate to above or below normal during just prior to a site visit or during a more
intensive hydrology study, the data may be confounded by non-normal circumstances and may
be considered outside the bounds of "most years". Ideally, both antecedent soil moisture
conditions and precipitation would be normal during all delineations. However, this is not a
realistic impression of climate. Therefore, primary indicators of hydrology must be reviewed
with scrutiny prior to determining if hydrology indeed exists.
Wetland hydrology may be observed as standing water (inundation), or may be observed as
freestanding water within a soil pit or auger hole (saturation) usually within the upper 12 inches.
This is what would be considered primary hydrology indicators. Examination of this indicator
requires digging a soil pit to a depth of 16 inches and observing the level at which water stands
after sufficient time has been allowed for water to drain into the hole. The required time will
vary depending on soil texture. This level represents the depth to the water table; the depth to
saturated soils will always be nearer the surface due to the capillary fringe. According to the
Hydrology criteria in the 1987 Delineation Manual, for soil saturation to impact vegetation, it
must occur within a major portion of the root zone, typically within 12 inches of the surface.
Only one primary indicator is necessary to make the determination that wetland hydrology is
present. However, since a single observation is not enough evidence, based on the percentage of
the growing season this inundation or saturation is required, these data are only valid when
reviewed while also considering the abundance of recent precipitation events or the seasonal
trend of climate when the site visit was made (this may be done through review of precipitation
records where available). In addition to the primary indicators of wetland hydrology, there are
secondary indicators (e.g. oxidized root channels, water-stained leaves, local soil survey data,
FAC-Neutral test), of which two must be present to consider the sample point as having wetland
hydrology.
A-2
Hydrophytic Vegetation (Wetland Vegetation)
Wetland vegetation is defined in the 1987 Manual as "The sum total of macrophytic plant life
growing in water or on a substrate that is at least periodically deficient in oxygen as a result of
excessive water content. When hydrophytic vegetation comprises a community where indicators
of hydric soils and wetland hydrology also occur, the area has wetland vegetation." In more
standard terms, some plants are more adapted to growing within inundated or saturated soil.
Based on literature records and professional experience, a panel of experts compiled a list of
plant species and assigned each a hydrophytic status (described below and includes five major
classes of probability of a plant occurring within a wetland).
In terms of delineation there is a gradient of plant species that are adapted to "growing in water
or on substrate that is at least periodically deficient of oxygen". Fieldwork associated with
wetland delineations includes a procedure (the 50/20 Rule, for determination of dominance),
which is also outlined in the 1987 Manual, by which to determine if hydrophytic plant species
dominate the vegetation at a given location. This procedure has been used for the wetland
delineation at the subject parcel of this report.
Hydric Soil
Defined in the 1987 Manual as "A soil that is saturated, flooded, or ponded long enough during
the growing season to develop anaerobic conditions that favor the �-owth and regeneration of
hydrophytic vegetation. Hydric soils that occur in areas having positive indicators of
hydrophytic vegetation and wetland hydrology are wetland soils."
For the purposes of delineation of wetlands, soils cannot be viewed without digging pits or
extracting soil using an auger. Therefore, transects of soil samples are taken from perceived
upland to perceived wetlands along a transitional boundary. There are specific color indicators,
textures, and depth requirements in the soil that are reviewed in order to determine whether
hydric soils occur at a given point ar not. After a transect of soil samples has been taken, upon
consideration of vegetation and indicators of appropriate hydrology a working prototype for the
given wetland is developed by the delineator. The wetland delineator then uses this working
prototype to complete the location of the remainder of the wetland boundary, unless the wetland
is large enough or the landscape features (vegetation or topography) change enough to warrant
additional transect samples.
A-3
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