HomeMy WebLinkAboutCritical Areas Study
CRITICAL AREAS STUDY FOR
RAD Holdings, LLC – 3112 Talbot Road
Tax Parcel No. 302305-9028
Acre Project #13039
Prepared By:
Acre Environmental Consulting, LLC.
17715 28th Ave. NE
Lake Forest Park, WA 98155
(206) 450-7746
For:
RAD Holdings, LLC
Attn. Rory Dees
6252 167th Avenue SE
Bellevue, WA 98006
September 4, 2013
Revision #1: November 23, 2015
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 1
TABLE OF CONTENTS
INTRODUCTION AND BRIEF SITE DESCRIPTION 2
METHODOLOGIES OF CRITICAL AREAS EVALUATION 2
BOUNDARY DETERMINATION FINDINGS 4
EXISTING FUNCTIONS AND VALUES ANALYSIS 6
USE OF THIS REPORT 7
REFERENCES 8
ATTACHMENTS:
1. WETLAND DETERMINATION DATA FORMS (6 DATA POINTS ON-SITE)
2. WETLAND RATING FORM FOR WESTERN WASHINGTON: 2014 UPDATE (1 RATING FORM)
3. CRITICAL AREAS MAP SHEET CA1.00
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 2
INTRODUCTION AND BRIEF SITE DESCRIPTION
On July 25, 2013 Acre Environmental Consulting, LLC visited the subject property located at
3112 Talbot Road in the City of Renton, Washington. The purpose of this site visit was to assess
and locate regulated critical areas on and adjacent to the subject site. The site is further located
as a portion of Section 30, Township 23N, Range 05E, W.M. The tax parcel number for this
property is 302305-9028. Per the King County Assessor’s office, the site encompasses
approximately 2.3-acres. Surrounding land use is comprised of single family residences. Access
to this site is from the west via a gravel driveway that leads from Talbot Road. The subject
property has a west aspect slope with the western portion occupied by two single-family
residences and maintained lawn. The eastern portion of the site is comprised of established
forest with a Category III wetland that extends off-site to the east and south. In the City of
Renton, Category III wetlands with moderate habitat scores (5 to 7 points) adjacent to
moderate or high impact land uses receive a 100-foot standard buffer measured from the
delineated wetland edge.
METHODOLOGIES OF CRITICAL AREAS EVALUATION
In July of 2013, Acre Environmental Consulting, LLC conducted a site visit to locate and verify
wetlands and streams occurring on and adjacent to the subject site. The methods used for
delineating, classifying, and rating the wetlands and streams in the project area are consistent
with current Federal, State, and City of Renton requirements. At the time of our July 25, 2013
site investigation, the weather was sunny with a temperature of 68 degrees Fahrenheit.
Acre Environmental Consulting, LLC used the routine methodologies described in the
Washington State Wetlands Identification and Delineation Manual (Washington State
Department of Ecology Publication #96-94, March 1997) to make a determination regarding
regulated wetlands. In addition, Acre Environmental Consulting, LLC evaluated the site using the
U.S. Army Corps of Engineers Wetland Delineation Manual produced in 1987 and the U.S. Army
Corps of Engineers Regional Supplement to the Corps of Engineers Wetland Delineation
Manual: Western Mountains, Valleys, and Coast Region produced in May 2010 (hereinafter
referred to as “the Corps Regional Supplement”). The Corps Regional Supplement is designed
for concurrent use with the 1987 Corps Wetland Delineation Manual and all subsequent
versions. The 2010 Regional Supplement provides technical guidance and procedures for
identifying and delineating wetlands that may be subject to regulatory jurisdiction under
Section 404 of the Clean Water Act. Where differences in the two documents occur, the Corps
Regional Supplement takes precedence over the Corps Manual for applications in the Western
Mountains, Valleys, and Coast Region.
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 3
According to the federal and state methodologies described above, identification of wetlands is
based on a three-factor approach involving indicators of hydrophytic vegetation, hydric soils,
and the presence or evidence of persistent hydrology. Except where noted in the manuals, the
three-factor approach discussed above requires positive indicators of hydrophytic vegetation,
hydric soils, and wetland hydrology, to make a determination that an area is a regulated
wetland. Using the aforementioned manuals, the procedure for making a wetland
determination is as follows:
1.) Examination of the site for hydrophytic vegetation (species present/percent cover);
2.) Examination for the presence of hydric soils in areas where hydrophytic vegetation is
present; and
3.) The final step is determining if wetland hydrology exists in the area examined under the first
two steps.
Per industry standards, Acre Environmental Consulting, LLC examined the entire project site. Per
current City of Renton requirements, Acre Environmental Consulting, LLC also assessed adjacent
properties within 300 feet of the proposed project limits, to the maximum extent possible
without entering adjacent properties. While a detailed assessment of Critical Areas on adjacent
properties was not possible due to the lack of legal access, Acre Environmental Consulting, LLC
conducted a review of all available information to assess the presence of off-site Critical Areas
within 300 feet of the subject site. This review is necessary to determine if any regulated Critical
Areas exist off-site which would cause associated protective buffers to extend onto the
property and affect the development proposal.
In addition to on-site field reviews, Acre Environmental Consulting, LLC examined aerial
photographs and topographical data (elevation contours) on King County’s interactive mapping
system (iMAP). Soil survey maps produced by the Natural Resources Conservation Service
(NRCS), National Wetlands Inventory (NWI) maps produced by the U.S. Fish and Wildlife Service
(USFWS), SalmonScape fish distribution maps produced by the Washington Department of Fish
and Wildlife (WDFW), and StreamNet fish distribution maps produced by Pacific States Marine
Fisheries Commission were also evaluated by Acre Environmental Consulting, LLC as part of this
project consultation.
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 4
BOUNDARY DETERMINATION FINDINGS
Wetlands were classified according to the U.S. Fish and Wildlife Service (USFWS) Cowardin
system Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al.,
1979) and rated, by categories, rated, by categories according to the Washington State
Department of Ecology Wetland Rating Form for Western Washington: 2014 Update as
required by the City of Renton Municipal Code Section 4-3-050 (Critical Areas Regulations).
Buffers are also determined by this chapter.
Wetland A
Cowardin: Palustrine, Forested wetland, Broad-leaved Deciduous, Seasonally
Flooded/Saturated (PFO1E)
Ecology Rating: Category III
City of Renton Rating: Category III, 100’ Buffer
This wetland is located in the eastern portion of the subject site and extends off-site to the east
and south. This hydrogeomorphic (HGM) class depressional wetland received a total score for
functions of 19 points (6 points for Water Quality Functions, 7 points for Hydrologic Functions,
and 6 points for Habitat Functions) on the DOE Wetland Rating Form for Western Washington:
2014 Update. Wetlands with scores between 16 and 19 points for all functions are classified as
Category III wetlands, per RMC 4-03-050(G)(2). In the Renton, Category III wetlands with habitat
scores between 5 and 7 points adjacent to moderate or high intensity land use, typically receive
100-foot protective buffers from their delineated edge.
Vegetation in this wetland is represented by a canopy of Oregon ash (Fraxinus latifolia, FacW)
and black cottonwood (Populus balsamifera, Fac), with and understory comprised of red osier
dogwood (Cornus sericea, FacW), hardhack (Spiraea douglasii, FacW), Himalayan blackberry
(Rubus armeniacus, FacU), reed canarygrass (Phalaris arundinacea, FacW), creeping buttercup
(Ranunculus repens, FacW), and sword fern (Polystichum munitum, FacU) on hummocks. Soils in
this wetland have a Munsell color of very dark greyish brown (10YR 3/2) with redoximorphic
features of brown (10YR 4/3), and a texture of silt loam from 0 to 18 inches below the surface.
Soils in this wetland were saturated at 12 inches below the surface during our July 2013 site
visit.
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 5
Non - Wetland
Vegetation in the western portion of the property is comprised of maintained lawn represented
by tall fescue (Schedonorus arundinaceu, Fac), blue wildrye (Elymus glaucus, FacU), hairy Cat’s-
ear (Hypochaeris radicata, FacU), velvetgrass (Holcus lanatus, Fac), colonial bentgrass (Agrostis
tenuis, Fac), creeping buttercup (Ranunculus repens, Fac), and white clover (Trifolium repens,
Fac). The lawn is interspersed with patches of Himalayan blackberry (Rubus armeniacus, FacU)
and scattered trees, including big leaf maple (Acer macrophyllum, FacU) and Oregon ash
(Fraxinus latifolia, FacW). Vegetation in the eastern part of the site is forested, represented by a
canopy of big leaf maple (Acer macrophyllum, FacU), Oregon ash (Fraxinus latifolia, FacW), and
western red cedar (Thuja plicata, Fac), with snowberry (Symphoricarpos albus, FacU), osoberry
(Oemleria cerasiformis, FacU), Himalayan blackberry (Rubus armeniacus, FacU), hazelnut
(Corylus cornuta, FacU), Oceanspray (Holodiscus discolor, FacU), thimbelberry (Rubus
parviflorus, FacU), dewberry (Rubus ursinus, FacU), and sword fern (Polystichum munitum,
FacU), in the understory. Typical soils in the non-wetland portions of the site have a Munsell
color of very dark greyish brown (10YR 3/2), with redoximorphic features of brown (10YR 4/3),
and a texture of silt loam from 0 to 18 inches below the surface. Soils in the non-wetland
portions of this property were dry during our July 2013 site visit.
NATURAL RESOURCE CONSERVATION SERVICE SOILS DESCRIPTION:
The Natural Resources Conservation Service (NRCS) mapped the subject property as being
underlain by Alderwood gravelly sandy loam, 6 to 15 percent slopes.
The NRCS describes Alderwood gravelly sandy loam, 6 to 15 percent slopes as rolling with
irregularly shaped areas ranging from 10 to about 600 acres in size. The A horizon ranges from
very dark brown to dark brown. The B horizon is dark brown, grayish brown, and dark yellowish
brown. Permeability is moderately rapid in the surface layer and subsoil and very slow in the
substratum. Available water capacity is described as low. Included within this soil unit are the
poorly drained Norma, Bellingham, Seattle, Tukwila, Shalcar soils, and Alderwood soils that
have slopes more gentle or steeper than 6 to 15 percent. Included soil units make up no more
than 30 percent of the total acreage.
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 6
EXISTING FUNCTIONS AND VALUES ANALYSIS
The methodologies for this functions and values analysis are based on professional opinion
developed through past field analyses and interpretations. This assessment pertains specifically
to the subject wetland, but is typical for assessments of similar systems throughout western
Washington. The three main functions provided by wetlands include water quality, stormwater
/ hydrologic control, and wildlife habitat. The wetland and buffer on the subject site are
forested, dominated by native trees and shrubs.
Wetlands in western Washington often contain necessary wildlife habitat resources such as
food, water, thermal cover, and hiding cover in close proximity. The subject wetland and buffer
likely provide a moderate level of habitat for a variety of wildlife species. During our site visit,
Acre Environmental Consulting, LLC observed an American Crow (Corvus brachyrhynchos), a
song sparrow (Melospiza melodia), a black-capped chickadee (Poecile atricapillus), and
evidence of a common raccoon (Procyon lotor), using the subject site. Due to its vegetative
structure, the subject wetland provides habitat for use by terrestrial wildlife species including
birds and mammals. The wetland and associated buffer provide protected habitat, which
becomes increasingly important as areas become further populated with humans and habitat
areas become fragmented. Habitat fragmentation and isolation from other resources resulting
from the surrounding development serves to limit the habitat values that the subject wetland
and buffer provide for wildlife.
The established vegetation within the wetland and associated buffer on this site serves to
intercept rain fall before it strikes the soil, thereby reducing erosion and improving water
quality. Furthermore, the dense vegetation and adsorbent soils serve to trap sediment and
pollutants and provide increased water quality functions that aid in a reduction of sediment
which results in cleaner water leaving the site.
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 7
TERMS & CONDITIONS
The environmental consulting work conducted, including this Critical Areas Study (the
“Services”) is supplied to Rad Holdings, LLC (the “Client”) as a means of determining whether
any wetlands, streams, and/or fish and wildlife habitats regulated by the City of Renton Critical
Areas Regulations exist on, or within 300 feet of the site. The Services are provided in
accordance with the following General Terms and Conditions (the “Terms”). In accepting the
Services provided by Acre Environmental Consulting, LLC (“Acre”), the Client voluntarily enters
into and agrees to the binding effect of the following Terms.
This report is intended to provide information deemed relevant in the Client's attempt to
comply with the regulations currently in effect. The work for this report has conformed to the
standard of care employed by professional ecologists in the Pacific Northwest. All other
representations or warranties, whether express or implied, are hereby disclaimed concerning
the work or this report. This report is based largely on readily observable conditions and, to a
lesser extent, on readily ascertainable conditions. No attempt has been made to determine
hidden or concealed conditions. If such conditions exist or arise, the information contained in
this report may be rendered inaccurate or incomplete based upon those conditions. Acre acts
solely as an independent contractor in providing the Services to the Client, and nothing in the
provision of such Services shall be construed as creating an agency, partnership, joint venture
or other similar legal relationship between Acre and the Client.
Please note that Acre did not provide detailed analyses of other permitting requirements not
discussed in this report (i.e., structural, drainage, geotechnical, or engineering requirements).
The laws applicable to Critical Areas are subject to varying interpretations. While Acre observed
professional industry standards when completing this review, the information included in this
report does not guarantee approval by any federal, state, and/or local permitting agencies.
Therefore, all work on this property should not commence until permits have been obtained
from all applicable agencies. If there are any questions regarding this report, please contact me
at 206.450.7746.
Acre Environmental Consulting, LLC.
Louis Emenhiser
Principal Wetland Ecologist
Professional Wetland Scientist #1680
Acre Environmental Consulting, LLC R1: November 23, 2015
Critical Areas Study for – RAD Holdings, LLC – Talbot Rd.
Renton, WA Page 8
REFERENCES
Cowardin, et al, 1979. Classification of Wetlands and Deepwater Habitats of the United
States. U.S.D.I. Fish and Wildlife Service. FWS/OBS-79/31. December 1979.
Environmental Laboratory. (1987). "Corps of Engineers Wetlands Delineation Manual,"
Technical Report Y-87-1, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss.
Hruby, T. 2004. Washington State wetland rating system for western Washington – Revised.
Washington State Department of Ecology Publication # 04-06-025.
King County iMAP: Interactive Mapping Tool. Administered by the City of Kirkland GIS Center.
http://www.kingcounty.gov/operations/gis/Maps/iMAP.aspx. Website last visited August 16,
2013.
Lichv ar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phy toneuron 2013-
49: 1-241.
Renton Municipal Code. Section 4-3-050 (Critical Areas Regulations). Renton, Washington.
SalmonScape. Interactive Mapping website administered by the Washington Department of
Fish and Wildlife. http://wdfw.wa.gov/mapping/salmonscape/index.html. Website last visited
on August 16, 2013.
StreamNet. Fish Data for the Northwest. Administered by the Pacific States Marine Fisheries
Commission. http://www.streamnet.org/. Website last visited on August 16, 2013.
U.S. Army Corps of Engineers (2010). "Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0)," ERDC/EL TR-
10-3, U.S. Army Engineer Research and Development Center, Vicksburg, MS.
U.S. Fish and Wildlife Service. National Wetlands Inventory Wetlands Mapper.
http://107.20.228.18/Wetlands/WetlandsMapper.html#. Last updated July 8, 2013. Website
last visited on August 16, 2013.
Washington State Wetlands Identification and Delineation Manual. Washington State
Department of Ecology. Publication #96-94. March 1997.
Web Soil Survey. United States Department of Agriculture. Natural Resources Conservation
Service. http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm. Website last visited on
August 16, 2013.
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP1
Louis Emenhiser S30, T23N, R5E, W.M.
Terrace Concave 2%
LRR-A 47.4520 -122.2076
Alderwood gravelly sandy loam, 6 to 15 percent slopes PFO1E
Wetland A
30 meters
Populus balsamifera
60
30
90
Y
Y
FacW
Fac
Fraxinus latifolia 6
7
10 meters
86
Cornus alba
Spiraea douglasii
Rubus armeniacus
20
20
10
50
Y
Y
Y
FacW
FacW
FacU 00
160 320
60 180
1 meter
15 60
Ranunculus repens
Polystichum munitum
60
30
5
95
Y
Y
N
FacW
Fac
FacU
00
Phalaris arundinacea 235 560
2.38
5
✔
✔
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP1
0-18 10YR 3/2 95 10YR 4/3 5 C M silt loam
15
12
✔
✔
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP2
Louis Emenhiser S30, T23N, R5E, W.M.
Hillslope Convex 7 %
LRR-A 47.4520 -122.2079
Alderwood gravelly sandy loam, 6 to 15 percent slopes
Non-wetland west of Wetland A.
30 meters
Thuja plicata
70
20
90
Y
Y
FacU
Fac
Acer macrophyllum 1
5
10 meters
20
Corylus cornuta
Oemleria cerasiformis
Rubus armeniacus
30
30
5
65
Y
Y
N
FacU
FacU
FacU 00
00
20 60
1 meter
205 820
Rubus ursinus
60
10
70
Y
N
FacU
FacU
00
Polystichum munitum 225 880
3.91
10
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP2
0-18 10YR 3/2 95 10YR 3/3 5 C M silt loam
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP3
Louis Emenhiser S30, T23N, R5E, W.M.
Hillslope Convex 8 %
LRR-A 47.4519 -122.2085
Alderwood gravelly sandy loam, 6 to 15 percent slopes
Non-wetland on the forested slope.
30 meters
Fraxinus latifolia
60
30
90
Y
Y
FacU
FacW
Acer macrophyllum 1
6
10 meters
16
Symphoricarpos albus
Oemleria cerasiformis
Rubus armeniacus
Holodiscus discolor
Rubus parviflorus
30
20
20
10
10
90
Y
Y
Y
N
N
FacU
FacU
FacU
FacU
FacU
00
30 60
00
1 meter
160 640
10
10
Y FacU
00
Polystichum munitum 190 700
3.68
5
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP3
0-18 10YR 3/2 100 silt loam
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP4
Louis Emenhiser S30, T23N, R5E, W.M.
Hillslope Convex 4 %
LRR-A 47.4520 -122.2094
Alderwood gravelly sandy loam, 6 to 15 percent slopes
Non-wetland in maintained lawn.
30 meters
20
20
YFacWFraxinus latifolia 2
4
10 meters
50
00
20 40
50 150
1 meter
50 200
Elymus glaucus
Hypochaeris radicata
Agrostis tenuis
Holcus lanatus
Ranunculus repens
Trifolium pratense
20
20
20
10
10
10
10
100
Y
Y
Y
N
N
N
N
Fac
FacU
FacU
Fac
Fac
Fac
FacU
00
Schedonorus arundinaceus 120 390
3.25
5
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP4
0-18 10YR 3/2 95 10YR 4/3 5 C M silt loam
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP5
Louis Emenhiser S30, T23N, R5E, W.M.
Hillslope Convex 4 %
LRR-A 47.4519 -122.2097
Alderwood gravelly sandy loam, 6 to 15 percent slopes
Non-wetland in maintained lawn / blackberry patch.
30 meters
10
10
YFacWFraxinus latifolia 2
6
10 meters
33
Rubus armeniacus 50
50
YFacU
00
10 20
60 180
1 meter
85 340
Elymus glaucus
Hypochaeris radicata
Dactylis glomerata
Schedonorus arundinaceus
Ranunculus repens
Agrostis tenuis
Conium maculatum
Cirsium vulgare
20
10
10
10
10
10
10
5
5
90
Y
Y
Y
Y
N
N
N
N
N
Fac
FacU
FacU
FacU
Fac
Fac
Fac
Fac
FacU
00
Holcus lanatus 155 540
3.48
0
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP5
0-18 10YR 3/2 95 10YR 4/3 5 C M silt loam
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
VEGETATION – Use scientific names of plants.
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Wetland Non-Vascular Plants1
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1.
2.
3.
4.
= Total Cover Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
= Total Cover
Herb Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
= Total Cover
Woody Vine Stratum (Plot size: )
1.
2.
= Total Cover
% Bare Ground in Herb Stratum
Hydrophytic
Vegetation
Present? Yes No
Remarks:
RAD Holdings, LLC King County / Renton 07.25.13
RAD Holdings, LLC WA DP6
Louis Emenhiser S30, T23N, R5E, W.M.
Hillslope Convex 16 %
LRR-A 47.4519 -122.2100
Alderwood gravelly sandy loam, 6 to 15 percent slopes
Non-wetland in blackberry patch.
30 meters
30
30
YFacUAcre macrophyllum 1
4
10 meters
25
Rubus armeniacus
Symphoricarpos albus
70
10
80
Y
N
FacU
FacU
00
00
20 60
1 meter
130 520
Ranunculus repens
20
20
40
Y
Y
FacU
Fac
00
Elymus glaucus 150 580
3.86
0
✔
✔
✔
✔
✔
✔✔
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
SOIL Sampling Point:
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) % Type1 Loc2 Texture Remarks
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3:
Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10)
Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2)
Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Other (Explain in Remarks)
Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11) Depleted Matrix (F3)
Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and
Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present,
Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required)
Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2,
High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B)
Saturation (A3) Salt Crust (B11) Drainage Patterns (B10)
Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2)
Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9)
Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2)
Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3)
Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5)
Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A)
Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7)
Sparsely Vegetated Concave Surface (B8)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
DP6
0-18 10YR 3/2 100 silt loam
✔
✔
✔
✔✔
SCALE 1" = 200'
2000 400 PREPARED BY:Acre Environmental Consulting, LLC17715 28th Avenue NELake Forest Park, WA 98155Phone: (206) 450-7746Email: louis@acreenvironmental.comRev #:Drawn By:L. EmenhiserAcre Job: 13039Date: 11.23.2015!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+Figure 1 of 5PREPARED FOR:RAD HOLDINGS, LLCATTN. RORY DEES6252 167TH AVE. SEBELLEVUE, WA 98006WETLAND RATING MAPRAD HOLDINGS, LLC - 3112 TALBOT ROADRENTON, WATAX PARCEL NO. 302305-9028RATING ANSWERS FOR WETLAND A
D1.1 & D4.1 Wetland has a highly
constricted, intermittently flowing outlet.
D1.3 Wetland has persistent ungrazed
plants > 95% of the area (the wetland
is forested).
D1.4 Area that is seasonally ponded is
>1/2 total area of the wetland.
D2.2 & D5.2
Approximately 54% of the area
within 150' of Wetland A is in land
use that generates pollutants and
excess runoff.
150'
Pollution generating areas (typ.)
RATING ANSWERS FOR WETLAND A
D4.3 the contributing basin for Wetland A is
~207,021 square feet in size / the ~18,070 square
foot wetland rating unit = 11.45 (basin is 10 to
100 times the area of the unit).
D5.3 Greater than 25% of the contributing basin
of Wetland A is covered with intensive land uses
(primarily residential). PREPARED BY:Acre Environmental Consulting, LLC17715 28th Avenue NELake Forest Park, WA 98155Phone: (206) 450-7746Email: louis@acreenvironmental.comRev #:Drawn By:L. EmenhiserAcre Job: 13039Date: 11.23.2015!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+Figure 2 of 5PREPARED FOR:RAD HOLDINGS, LLCATTN. RORY DEES6252 167TH AVE. SEBELLEVUE, WA 98006WETLAND RATING MAPRAD HOLDINGS, LLC - 3112 TALBOT ROADRENTON, WATAX PARCEL NO. 302305-9028CONTRIBUTING
BASIN FOR
WETLAND A
WETLAND A
RATING UNIT
SCALE 1" = 200'
2000 400
Rev #:
Drawn By:L. Emenhiser
Acre Job: 13039
Date: 11.23.2015
!"#$
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1KM POLYGON MAP (UNDISTURBED & ACCESIBLE HABITAT)
RAD HOLDINGS, LLC - 3112 TALBOT ROAD
RENTON, WA
TAX PARCEL NO. 302305-9028
SUBJECT WETLANDS
LEGEND
ONE KILOMETER POLYGON LINE
HIGH INTENSITY LAND USE
MODERATE, AND LOW INTENSITY LAND USE
Note: Land use definitions are derived from H2.0 Table 3 of the
Wetland Rating System for Western WA: 2014 Update
RELATIVELY UNDISTURBED LAND
PREPARED FOR:RAD HOLDINGS, LLCATTN. RORY DEES
6252 167TH AVE. SE
BELLEVUE, WA 98006
PREPARED BY:
Acre Environmental Consulting, LLC17715 28th Avenue NE
Lake Forest Park, WA 98155
Phone: (206) 450-7746Email: louis@acreenvironmental.com1 KILO
M
E
T
E
R
RATING ANSWERS FOR WETLAND A (H2.1, H2.2, & H2.3)
1km Area = 35,620,867 sf
High Intensity Land Use = 28,735,157 sf (80%)
Moderate & Low Intensity Land Use = 3,17,2809 sf (10%)
Accessible Moderate & Low Intensty LU = 156,157 sf (4%)
Relatively Undisturbed Land Use = 3,713,483 (10%)
Accessible Relatively Undisturbed LU = 59,195 sf (1%)
SCALE 1" = 1,000'
1,0000 2,000
SUBJECT SITE
NTS PREPARED BY:Acre Environmental Consulting, LLC17715 28th Avenue NELake Forest Park, WA 98155Phone: (206) 450-7746Email: louis@acreenvironmental.comRev #:Drawn By:L. EmenhiserAcre Job: 13039Date: 11.23.2015!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+Figure 4 of 5D3.1 The subject wetland is not located within 1 mile of any water listed listed on the 303(d) list.
D3.2 The subject wetlands are in the same basin as the Black River which is on the 303(d) list. PREPARED FOR:RAD HOLDINGS, LLCATTN. RORY DEES6252 167TH AVE. SEBELLEVUE, WA 98006DOE 303(d) Waters in Basin (Screen Capture)RAD HOLDINGS, LLC - 3112 TALBOT ROADRENTON, WATAX PARCEL NO. 302305-9028
D3.3 No TMDL's have been identified for the Black River basin.
PREPARED BY:Acre Environmental Consulting, LLC
17715 28th Avenue NE
Lake Forest Park, WA 98155
Phone: (206) 450-7746Email: louis@acreenvironmental.comRev #:
Drawn By:
L. Emenhiser
Acre Job: 13039
Date: 11.23.2015
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TMDL'S FOR WRIA 9 (Screen Capture)
RAD HOLDINGS, LLC - 3112 TALBOT ROAD
RENTON, WA
TAX PARCEL NO. 302305-9028
PREPARED FOR:
RAD HOLDINGS, LLC
ATTN. RORY DEES
6252 167TH AVE. SE
BELLEVUE, WA 98006
1921
9
4
19
6
202 20
2
2
0
4
2
0
6
208
19
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202
202
204
20
6
1
6
4
16
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172
174
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4
1561581621
6
6
176
176
184186
18618
8
188
204
19
0
19
0
20
0
20
0
17
0
180
18
0
13014014015
0
100 110120130150150160190190 200
TALBOT RD S.PREPARED FOR:RAD HOLDINGS, LLCATTN. RORY DEES6252 167TH AVE. SEBELLEVUE, WA 98006CRITICAL AREAS MAPRAD HOLDINGS, LLC - 3112 TALBOT ROADRENTON, WATAX PARCEL NO. 302305-9028MAP SHEET: CA1.00PREPARED BY:Acre Environmental Consulting, LLC17715 28th Avenue NELake Forest Park, WA 98155Phone: (206) 450-7746Email: louis@acreenvironmental.comRev # 1: 11.23.15Drawn By:L. EmenhiserAcre Job: 13039Date: 09.04.2013!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+!"#$!"#$%&"’!"()*+&",-*($"./0**+1" = 100'
1000 200
WETLAND
BUFFER
LEGEND
DP2 DATA POINT (6 TOTAL)
NGPA SIGN
X FENCE (Two rail or other
type as approved by Renton)
DP3
DP4DP5
DP6
DP2 DP1
EXISTING
SFR
EXISTING
GARAGE
EXISTING
GRAVEL
DRIVE
CULVERT
12" CMP
WETLAND A
CATEGORY III
100' BUFFER
X
X
X
X
EXISTING
SFR
100'
BUFFER