HomeMy WebLinkAboutWetland Delineation 001275007WESTECH COMPANY
r-1voronmental Consulting — Site Permitting
FINAL WETLAND DELINEATION
AND BUFFER REDUCTION REPORT
WOODLAND DRIVE
PORT TOWNSEND, WASHINGTON 98368
ASSESSOR'S PARCEL # 001-27-5007
JEFFERSON COUNTY, WASHINGTON
October 2019
G. Bradford Shea, Ph.D.
Submitted to:
JEFFERSON COUNTY DEPARTMENT
OF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
Offices: Port Angeles, Washington; Winston, Oregon; Cottonwood & Rocklin, California;
Main Office: PO Box 1239, Winston, orogon 97496 - Telephone: (360) 565-1333
email: brad@We3t0Chcompany.com
FINAL WETLAND DELINEATION
AND BUFFER REDUCTION REPORT
WOODLAND DRIVE
PORT TOWNSEND, WASHINGTON 98368
ASSESSOR'S PARCEL # 001-27-5007
JEFFERSON COUNTY, WASHINGTON
October 2019
G. Bradford Shea, Ph.D.
Copyright 2019 by G. Bradford Shea, Westech Company — All Rights Reserved
Submitted to:
JEFFERSON COUNTY DEPARTMENTOF COMMUNITY DEVELOPMENT
621 Sheridan Street
Port Townsend, Washington 98368
Submitted by:
WESTECH COMPANY
P.O. Box 2876
Port Angeles, Washington 98362
CONTENTS
CHAPTER/SECTION
1.0 INTRODUCTION
PAGE NO,
2.0 METHODS
7
3.0 WETLAND DELINEATION RESULTS
3.1 Existing Conditions
11
3.2 Land Uses and Habitat Values
11
3.3 Wetland Types and Buffers
18
3.4 Jefferson County Wetland Map
19
19
4.0 BUFFER REDUCTION
4.1 Standard Buffer and Proposed Reduced Buffer
20
4.2 Compliance with County Code Requirements
20
4.3 Buffer Restoration Planting
20
4.4 Performance Standards
22
4.5 Annual Monitoring
25
4.6 Contingency Plan
25
26
5.0 CONCLUSIONS AND RECOMMENDATIONS
51 Conclusions
27
5.2 Recommendations
27
27
6.0 REFERENCES
28
TABLES
Table 1 - List of Plant Species: on -Site Wetland
Table 2 - Dominance Test Using 50/20 Mule for Plant Selection
14
Table 3 - Site Sails
15
Table 4 - List of Native Plants for Buffer Mitigation and Enhancement
17
23
FIGURES
Figure 1 - Location Map
Figure 2 -- Vicinity Map
2
Figure 3 - Parcel Map
3
Figure 4 - 2015 Aerial Photograph
4
Figure 5 - Septic System Plan Showing Wetland Buffer- Reduction
5
Figure 6 -- Map Showing Wetlands and Test Pit locations (VSH-1-4)
Figure 7 - Site Map Showing Planting Areas
12
21
APPENDICES
Appendix A - Site Photographs
Appendix B - Wetland Data Forms
A-1
Appendix C - Wetland Rating Form and Maps
B-1
C-1
WW1621 -Fina l Wood landDriveWD. TUC/100319/mas
1.0 INTRODUCTION
The Property (Site) is an approximately 4.36 acre parcel located at Woodland Drive in
Port Townsend, Washington, The Site is listed as Jefferson County Assessor's Parcel
#001-27-5007 and is located in the Southwest Quarter of Section 27, Township 30
North, Range 1 West (Figures 1, 2, 3 and 4). The Site is owned by Bruce and Dianna
Raymond at PO Box 3584 Lihue, Hawaii 96766-6584.
The Site is located in northeastern Jefferson County approximately four (4) miles from
south of Port Townsend. The Parcel is located south of Woodland Drive and east of
Ridgeview Drive.
Mr, Bri-we Raymond contracted with Westech Company (Westech) to conduct a
Wetland Delineation for the Site. Westech's Scope of Work was to delineate and rate the
wetland and determine the buffer required under the Jefferson County Codes (Jefferson
County 2016x). Chapter 2.0 describes the Methodology used to conduct this Wetland
Delineation. Chapter 3.0 contains results of the Wetland Delineation. The current project
proposed at the Site is installation of a septic system (Figure 5) (CDS 2018) and a building
pad which may have a residence constructed on it at a future date.
Field investigations of the wetland were conducted by Dr. G. Bradford Shea and Mr. Paul
Ruben during May and .lune 2017. Dr. Shea conducted on-site field work and reviewed
photographic and other site documentation during the period August through October
2018. A Site visit was conducted with staff from Jefferson County (Ms. Donna Frostholm)
on April 4, 2019 with Westech personnel present (Dr. G. Bradford Shea) as well as Mr.
Michael Deeney of Creative Design Solutions (CDS). Ms. Frostholm reviewed the
Wetland Delineation Report and the on-site conditions. Subsequently, CDS made minor
revisions and updated the septic system plan in August 2019 (see Figure 5).
A mosaic of five wetlands lying within 100 feet of each other, was documented on the Site.
These were classified as Category Ill wetlands with a habitat rating of six (6), requiring a
110 foot buffer for projects of this size. The Wetland boundaries and buffers have been
marked in the field. Chapter 4.0 of this document constitutes a report on proposed buffer
reduction from the standard 110 foot buffer to a buffer of 82.5 feet. A Planting and Erosion
Control Plan for Restoration and Enhancement of the reduced buffer is included in
Chapter 4.0.
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2.0 METHODS
The on-site Wetlands were delineated and rated according to procedures required by the
Jefferson County Code (JCC). The JCC requires that wetlands be identified and
delineated according to procedures in the 1997 Washington State Department of
Ecology's (WDOE) Washington State Wetlands Identification and Delineation Manual
(Ecology Publication No. 96-94 or as amended) (JCC 18.22.300). Because the State of
Washington now defers to the U.S. Army Corps of Engineers' (Corps) wetland delineation
methods, this wetland was delineated according to the Corps' Regional Supplement for
the Western Mountains, Valleys and Coast Region (Corps 2010). The Wetland was rated
by the methods outlined in the Washington State Department of Ecology's Wetland Rating
System for Western Washington (WDOE 2014),
The following methods are drawn from the Corps' Supplement for the Western Mountains,
Valleys and Coast Region (Corps 2014). The Corps' manual defines wetlands as 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." Wetlands
are defined by the following three criteria:
1. Ve etativn: Prevalent vegetation consisting of macrophytes adapted to areas with
wetland hydrologic and soil conditions.
2. Hydric l$-. Solis that are histosols, in aquic suborders or that show certain
characteristics associated with poor draining, very poor draining or ponding for a
long duration during the growing season.
3. H drolo : Evidence that the area is inundated or saturated to the surface between
5 and 12.5 percent of the growing season in most years.
Evidence of at least one wetland indicator from each of these three categories is generally
required to identify an area as a wetland.
Preliminary data gathering consisted of the examining U.S. Geological Survey (USGS)
maps, county parcel, wetlands, and topographic maps, aerial photographs and Natural
Resources Conservation Service (NRCS) soil surveys. Because these sources were
insufficient to make a determination, additional information to havelte vegetation, the complexity to require a
hydrology was unavailable, and the Site did not appear
comprehensive determination, a Routine Determination with On-site Inspection was used.
Because the wetland on -Site was less than five acres, the procedure for "Areas Equal to
or Less Than 5 Acres in Size" was used. The wetland and its boundaries were initially
estimated by noting likely areas of topographic and vegetative distinction between
wetlands and uplands. The routine method for delineating wetlands begins with the
WW1621-f ina1Wood1andDrivoWD&BR.RPT/10032019/mas
identification of plant communities, as uplands and wetlands are often occupied by
different assemblages of species determined by combinations of environmental
influences,
These plant communities were identified and evaluated for the presence or absence of
hydrophytic vegetation. The wetland indicator status of the dominant species is used to
determine the presence of hydrophytic vegetation. Each species has an indicator status
defined according to the U.S. Department of Agriculture (USDA) (USDA 2012). A
species indicator status refers to the relative frequency at which the species occurs in
jurisdictional wetlands. Wetland plant species (pgL, FACW and/or FAC) must constitute
greater than 50 percent of the dominant vegetation to meet Department of Ecology
criterion for hydrophytic vegetation (Corps 2010). Because non-dominant plants int e
wetland were scattered irregularly throughout, small transects could not be utilized to
estimate percent coverage. Accordingly, a combination of on -Site visual inspection and
aerial +maps were used to estimate percent coverage. These estimates were used to
conduct a dominance test with 50/20 selection as described in the Corps manual
2010). (Cors
P
Wetland plants were primarily identified in the field, with subsequent collection and ke in
when necessary. Plants were identified using the following sources: y g
Hansen's Northwest Plants Database 2018
USDA NRCS Plants Database 2018
Pojar sand Mackinnon 2004
Cooke 1997
Lyons 1997
Taylor 1995
Guard 1995
Hitchcock and Cronquist 1973
Keying of plants using magnifying lenses and dissecting microscope was used as
necessary. Determination of wetland indicator status utilized regional keys published by
USDA. This indicator replaced the previous U.S. Fish and Wildlife key in ,lune 2012
(USDA 2012),
Areas with plant communities dominated by hydrophytic vegetation were then evaluated
for wetland hydrology and hydric soils_ Wetland hydrology refers to "all hydrological
characteristics of areas that are periodically inundated or have soils saturated to the
surface at some time during the growing season." These are areas with evidence that
the presence of water has an overriding influence on the characteristics of vegetation
and soils due to anaerobic and reducing conditions (Corps 2010). An area has wetland
hydrology if it is inundated or saturated to the surface continuously for at least five
percent (5%) of the growing season in most years. The level of inundation can range
from permanently inundated to irregularly inundated/saturated. The level of
inundation/saturation can be impacted by precipitation, topography and soil
characteristics.
WW1621-I'inaIW0odiandDriveWD&BR RPT/10032019/rnas
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Hydrology is often the least exact of the parameters used to delineate wetland edges
because it is the most ephemeral and leaves the least reliable traces in the lar►dscape
after water tables or floods have receded. Therefore, indicators of wetland hydrology
are sometimes difficult to find in the field. Hs forHowever,
sufficient duration duringtland the gaowing
rea is
periodically inundated or has saturated so
season.
Based on Carps recommendations, Westech staff noted areas with evident
characteristics of wetland hydrology. in general, places with wetland hydrology show
evidence that the presence of water has had an overriding influence on characteristics
of vegetation and soils due to anaerobic and chemically -reducing conditions. Hydrologic
conditions were determined through examination of topographic relief and drainage
patterns. Soil moistness was determined by hand and, in the event of standing water,
depth to standing water was noted. Field and visualobservicators atland ion onhydrology
saturatedinclude
soils or
suchfeatures as watermarks, historic records,
inundation.
Evidence of hydric soils was checked along the apparent wetland boundary. These are
soils that formed under conditions of saturation, flooding or ponding longers. These soils ugh lng
a e
the growing season to develop anaerobic conditions in the upp Y
identified in the field mainly by morpholofgnundat#ons such as color patterns, organic
matter accumulation, and observation
Soils were sampled to depths of up to 18-24 inches using a wetland shovel. Soil
consistency was determined by feeling for grain size and texture. Soil moisture was
determined at that time. In the event of saturated conditions in the hole, depth to standing
water was noted. Soil color was
determined 2D1 through 5a lwas also examicomparison of ned for presence eld les hof
standard Munsell Color Charts (Munse )
redox features, gley or other indicators of anaerobic
coil oxi ed hydric. ation. If a or more of these
indicators was present in the wetlands, the
The wetland was determined based an nhe Routine rgy ndte � ators. The bouMethod used bndarr es of
Corps using a combination of vegetatio , soil and h dro oin each plant community area as wetland or
the wetland were determined by first mapp g
non -wetland. The general wetland boundary was determined by the interface of these two
mapping units. These boundaries were confirmed and the boundary locations narrowed
down by sampling specific transects along wetland boundaries. Various points were
sampled for vegetation, sail and hydrology s for urer o ample paints two we land pinpoint the location of land two
and
boundaries. Appendix B contains data fa
upland) from a typical area in the delineated wetland.
Wetland boundaries were indicated in the field by the use of pink "Wetland Delineation"
tape tied to trees or shrubs as appropriate. Buffer widths were determined based on the
Jefferson County Critical Areas Code and marked in the field as appropriate with orange
9
WW1 621-FinalWoodland DriveWD&BR.RPT/10032019imas
and black tape. Soil test pits were indicated by blue and white diagonal flagging and
stakes containing the test pit number.
Site visits were carried out by Dr. Bradford Shea and Mr. Paul Ruben in May and June
201T This report was prepared by Dr. Shea. Exploration of the Site involved noting
characteristics such as hydrology and soil conditions. A botanical study involving
identification of the plant species found growing on the Site was also conducted. The
wetland edge was delineated and photographic documentation was acquired (Appendix
A). Measurements for mapping purposes were made using a fiberglass tape measure.
WW1621-Final WoodlandDriveWD&BR. RPT/10032019/mas
10
3.0 WETLAND DELINEATION RESULTS
3.1 EXISTING CONDITIONS
The Property (Site) is located in northeastern Jefferson County 4.0 miles south of Port
Townsend. The Parcel is located south of Woodland Drive and east of Ridgeview Drive
in Port Townsend, Washington. The northern edge and southeastern portion of the Site
lie at approximately 270 feet above mean sea level (msl), while the remaining area
ranges between 255 and 200 feet msl,
The Site is vegetated by lowland forest dominated by Douglas fir (Pseudotsuga
menziesii), western red cedar (Thuja PhCata), Pacific madrone (Arbutus menziesi►), and
red alder (Alnus rubra) in the tree layer: Pacific willow (Salix lasiandra), salal (Gaultheria
shallop), Nootka rose (Rosa ruwtkana), twinberry honeysuckle (Lonicera involucr � 5
Pacific rhododendron (Rhododendron macrophyllurn), Himalayan blackberry
armeniacus), and salmonberry (Rubes spectabilis) consistent
l it th theeld shrub
hrsefiail layer:
Slough sedge (Carex obnupta), broadleaf cattail (Typ
ha (Equisett/m arvense), stingingnettle
r� Upland and wetland plants are described in
munherbe
Y
itum) are present in the
more detail below.
While properties to the southwest and east of the Site appear to be recently logged, the
surrounding properties are mcderately forested and appear to be single family units on lots
of five acres or larger. The Site is zoned
{� Rural Residential
� est is zoned for Agrigan cultural Land of one residence per 5 acres. The
1:20 and the remaining area is zoned as Rural Residential 1:5.
The Site has not been developed to date. Temporary soil test pit excavations and foot
trails were observed during Site visits.
Wet and
Westech's field investigation determined that a Category Ill wetland is located on the Site
(See Figure 6). The wetland is mosaic of five small depressional wetlands, each lying
within 100 feet of an adjacent wetland within the mosaic. The largest observed wetland
began adjacent to the eastern edge of Ridgeview Drive (Wetland A-4) and ran in a
northwest to southeast direction across the Site. A small depressional wetland was also
located 20 feet from the northeastern border of this wetland (Wetland A-3). A pond was
located at the northeastern portion of the Site, adjacent to Woodland Drive (Wetland A-1),
and a small depressional wetland waAsdiscovered #land was located atpond along the
the southwestern
eastern border of the Site (Wetland)
border of the Site adjacent to Ridgeview Drive (Wetland A-5).
11
WW1621-Fina1WoodlandDriveWD&BR.RPT/10032019/ma$
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The wetlands receive water from precipitation and overland flow shaped by the adjacent
micro -topography. Some may receive water from high water tables in some locations. The
mosaic of wetlands together are approximately 1.25 acres in size. Due to their similarities
and close spacing we have considered this to be one forested depressional wetland.
Wetland boundaries were determined by first noting likely areas of topographic and
vegetative distinction between wetland and uplands. Each of the wetlands contain patches
of slough sedge, which provided the clearest markers of wetland location. The wetlands
transition rapidly from wetland to upland as marked by a micro rise in elevation (2-3 feet)
and the presence of salal in the adjacent upland areas. Red alders lay both in and at the
boundaries of the wetland. Evidence of hydric soils corresponded with the change in
landscape elevation and plant variation.
Westech staff also noted the presence of hydrological indicators. While difficult to find, and
often the least exact of the three indicators, Westech staff noted areas with evident
characteristics of wetland hydrology, places where the presence of water has an
overriding influence on characteristics of vegetation and soils due to anaerobic and
chemically -reducing conditions. These included standing water, saturation in the root zone,
water marks, algal matting, and the presence of water-logged leaves (See Figure 6 and
Appendix B).
The vegetation, soils, and hydrology of the Site are described in more detail in the
following subsections. Results of these three factors at four test pit locations (two in the
wetlands, two in the upland area) (Figure 6) are contained in Appendix B. Figure 6 shows
the location of the wetland relative to nearby features. Site photographs are shown in
Appendix A.
Vegetation
Table 1 lists wetland vegetation and upland vegetation adjacent to the wetland boundary.
Dominant vegetation in the wetland includes western red cedar (FAC), red alder (FAC),
and black cottonwood (Populus balsamifera, FAC) in the tree layer. Pacific willow
(FACW), salmonberry (FAC), Himalayan blackberry (FAC), Nootka rose (FAC) and
twinberry honeysuckle (FAC) dominate in the shrub layer. Water parsley (Oenanthe
sarmentosa, FACW, slough sedge (FACW), broadleaf cattail (OBL), field horsetail
(FACW), stinging nettle (FAC), and soft rush (Juncus effusus, FACW) are found in the
herbaceous layer.
Table 2 shows the results of a 50/20 dominance test conducted following the guidelines
of the Corps (Corps 2010). As this table indicates, 80.0 percent of dominant species in
mosaic wetland were rated OBL, FACW or FAC in VSH-1 and 83.3 percent in VSH-3.
The vegetation in this wetland can therefore be characterized as hydrophytic for the
purposes of delineating the wetlands.
WW1621-FinalWoodlandDriveWD&BR. RPT/10032019/mas 13
TABLE 1.
LIST OF PLANT SPECIES: ON-SITE WETLAND
Common Name
-
Indicator
u - -
% Cover
Wetland
Red alder
Western red ceda
Alnus rubra ^ ---
- -
FAC
45
r
Cottonwood
Thulicat -
Pv ulus balsamifera
FAC
p
Pacific willow
Salix lucida
FAC
5
Salmonber
Himala an blackber
Rubus s ectabilis
FACW
� FAC
20
15
Nootka rose
Rubus a►rrreniacus
FAC
10
Twinber hone suckle
Rosa nutkana
Lonicera i��valucrata
-
FAC _
15
Field horsetail-
uisitum a►vense
FAC
FACW
15
Slou h sed a
Water arsle
Carex obnu fa _
OBL_
5
5
Softrush
Oenanthe sarmentosa
FACW
15 -�
Stin in nettle
Juncus effuses
Urtica dioica
FACW
10
Broadleaf cattail
Ty�h latilia
FAC
5
OBL
5
U land
Red alder
Alnus rubra
' m
Western red cedar
Thu a licata
FAC
40
Western hemlock
Tsuda he
FAC
10
- -
Dou las fid
Pacific madrone
Pseudotsu a menziesii
FACU
FACU
15
--
10
Salol
Arbutus mensiesii
FACU
5
Nootka rose
Gaultherra shallon-
Rosa nutkana
FACU
55 --
Pacific rhododendron
-`
Rhododendron n'►acrophyAum
FqC
FACU
15
-
_Himalayan blackberry
Rubus armeniacus
5
Scotchbroom
Thimbleber
C isus sco anus
FAC
FACU
10
5
Swordfern
Rubus arviflorus
Pal stichum munitum
FACU
--
5
Bracken fern
Cleavers
Pteridium a uilinium
FACU
FACU
10
5
Galium a arine
FACU
5
*Indicators: UPL = Upland plant, FACU= Facultative Upland Plant (more upland than
wetland), FAC = Facultative (borderline wetland plant), FACW = Facultative Wetland
Plant (prefers wetland conditions), OBL = Obligate (only found in wetlands).
VWU1575-WoodlandDriveWD Tab1/120618/mas
14
TABLE 2. DOMINANCE TEST USING 50120 RULE FOR PLANT SELECTION
STRATUM
Tree
Shrub
SCIENTIFIC NAME
WETLAND ABSOLUTE
DOMINANT?
R PERCENT
COVER----
—. - -
Alnus rubra
65
10
Yes
No
Populus balsamifera
tMFAC
No
Thuja plicata
- - -
FAC 10
—. -
--- - __ .- --
-
Total cover 85%
50/20 Thresholds
-
50% total cover = 43.5
20% total cover = 17
Salix lucida
FACW 25
Yes
Lonicera involucrata
FAC 20
Yes
Yes
Gaultheria shallop
FACU 20
No
Rosa nutkana
FAC 10
No
S f'x sitchen,,is
FACW 5
a r
Total cover 80%
50/20 Thresholds
50% total cover = 40
20% total cover = 16..
_- -- ° OBL 30 Yes
Herb - Carex obnupta 5 No
Lonicera involucrata FAC 3 No
` Polystichum munitum FACU
Total cover 38%
50/20 Thresholds'.
50% total cover = 19
20% total cover = 7.9
Hydrophytic Total number of dominant species across all strata = 5
Vegetation Percent of dominant species that are 013L, FACW or FAC = 100%
Determination Therefore, the community is hydrophytic by Indicator 2 (Dominance
Test -
15
WW1575-WoodlandDrive/120618/mas
The upland area adjacent to the wetland was dominated by western red cedar (FAC),
Douglas fir (FACU). Pacific madrone (UPl! ), and red aider in the tree layer. Nootka rose
(FAC), salmonberry (FAC), saiai (FACU), Pacific rhododendron (FACU), scotchbroom
(Cytisus scoparius, UPL), and thimbieberry (Rubus parviflarus, FACU) are present in
the shrub layer. Swordfern (FACU), bracken fern (Pferidium aquilinum, FACU), and
cleavers (Galium aparihe, FACU) are dominant plants in the herb layer. This
combination of species does not meet Corps criterion for hydrophytic vegetation
because less than 50 percent of dominants are QBL, FAC or FACW.
Soils
"Hydric soils" is a name for soils commonly found in wetlands. These soils are identified
mainly by morphological features such as color patterns, organic matter accumulation,
or observation of inundation. A soil may be considered hydric if it is inundated (flooded
or ponded) for at least one continuous week during the growing season in mast years
(Corps 2010). Westech staff looked for field indicators of hydric soil conditions as
recommended by the Corps. If one or more of these indicators was present in the
wetlands, the soil was consideree! hydric (Corps 2010).
Westech staff examined existing NRCS soil surveys of the Site. The MRCS maps one
soil on the Site (NRCS 2017). The soil mapped by the NRCS on the Site include:
Clallam ra elly sand loam 0 to 15 ercent slo es CmC is a well drained soil
with a depth of 20 to 40 inches to its restrictive layer. It has a very low to
moderately low capacity to transmit water in its most limiting layer (0.00 to 0.06
in/hr) and a depth to the water table of 19 to 39 inches. This soil is recorded as
having very low water storage capacity in its profile (about 1.9 inches) and no
frequency of flooding or ponding.
This soil does not appear on the NRCS national hydric soils list (NRCS 2017)
Because NRCS soil surveys do not necessarily capture small scale variation, Westech
staff conducted additional field studies of the soils. To examine soils in the wetland
boundaries, Westech staff dug soil pits and observed soil characteristics. The locations of
four soil pits examined by Westech are shown in Figure 6. These VSH plots are located
within representative upland and wetland areas. The location of these plots has been
marked in the field using blue and white striped flagging. The soil information taken at
these sample points is highlighted in Table 3 with Data Forms shown in Appendix B.
WW1621-Fina1Wood1andDriveWD&BR. RPT/10032019/mas
16
TABLE 3. SITE SOILS
v
Locf'�� , Type. : .. :.1
EPlot#VEHS-1 Wetland
none
nr
0-6
Loamy��18
Loamv Clav
3/4 ( OYR
Sil Clams
Plot # VHS -2 Upland
None
4/2
Loam y_Silt
3-15
Cla e Silt
:.6�-15 ---)—
Pjot�#VHS-3�etland
None
0-6
sqv.LOarn
6-12
-2mu—s—ilt
Plot # VHS -4 (Upland)
4/6 7.5YR) 5%
-Y-15
Sandy Cla
7777-
M
WW1 575-WoodlandDriveWD.Tab3/12061 81mas
KOUOX-jkpi�r►.o
2/1 tjgYR
1.
none
4/1
1 OYR
3/4 ( OYR
—
None
4/2
YR
4/6 7.5YR
2/1
YR
None
4/1
YR
2/1 (10YR 1Ocxe
3/1
YR
4/6 7.5YR) 5%
17
As Table 3 indicates, soils at the edge of Wetland A-1 (VSH-1) were loamy clay with
matrix with a valuelchroma of 2/10 OYR) at 0 to 6 inches. Soil between 6 to 15 inches
were silty clay with matrix with a valuelchroma of 411 (10YR) and 10 percent redox
features 314 (7,5YR). These soils show a reduced matrix that indicates regular inundation.
Sails at the edge of the main wetland (Wetland A-4) (VSH-3) were silty foams with matrix
with a valuelchroma of 2/10 OYR) at 0 to 6 inches. Soils between 6 to 12 inches were
clayey silt with matrix with a valuelchroma of 4/10 OYR) and 10 percent depletion features
2/10 OYR), These soils show a depleted matrix that indicates regular inundation.
Adjacent upland soils (VSH-2) near Wetland A-1 had a valuelchroma of 312 (10YR) at 0 to
3 inches, Soil between 3 to 15 inches were clayey silt with matrix with a valuelchroma of
412 (10YR) and 5 percent redox features 416 (7.5YR). Upland soil (VSH-4) near Wetland
A-4 was also sandy clay with matrix with a valuelchroma of 311 (10YR) and 5 percent
redox features 416 (7.5YR). These soils show signs of some inundation at the root zone,
HYdrol_vgy
Numerous factors (e.g., precipitation, topography, soil permeability, and plant cover)
influence the wetness of an area. The wafer source for this wetland comes from a
combination of direct precipitation, runoff from adjacent elevated areas, and a potentially
high water table in some locations. Hydrologic indicators across the mosaic wetlands
included areas of standing water, saturation in the root zone, algal matting, water-
marks, and the presence of water-logged leaves (Corps 2010).
3.2 LAND USES AND HABITAT VALUES
Wetlands are transitional areas between upland and aquatic environments where water is
present long enough to form distinct soils, and where specialized, water -tolerant plants
grow. Wetlands serve a variety of functions such as transferring surface water into the
ground, thereby recharging groundwater supplies Wetlands trap water along with
flood impacts; and provide wildlife habitat, sediments and pollutants providing stormwater detention and fltration. They also mitigate
Wetland buffers are important because they reduce the adverse impacts of adjacent land
uses on wetlands. The buffers serve to stabilize soil and prevent erosion, filter suspended
solids, nutrients and toxic substances and moderate impacts of stormwater runoff. As
such, buffers serve to preserve wetland functions. They also provide important habitat for
wildlife living in and around the wetland.
The on-site wetlands were situated in depressions that were formed from adjacent
microtopography. Standing water was found to be present in many areas during June and
no defined outlet was found. This type of wetland can provide habitat to many wildlife
species.
WW1621-FinaWoodlandUriveWO&BR. RPT/10032019/mas
18
3.3 WETLAND TYPES AND BUFFERS
The buffer sixes to be applied at this Site are governed by the Jefferson County Critical
Areas Code. In order to establish buffer sizes, Jefferson County requires that wetlands be
rated using the Washington State Department
tsystem, wetlats Wetland nd matings areting basedsoni� for
Western Washington (WDOE )
1. Water Quality Function (i.e., Does the wetland have the ability to improve water
quality?)
2. Hydrologic Function (i.e., Does the wetland decrease flooding and/or erosion?)
3. Habitat Function (i.e., Does the wetland provide habitat for many species?)
In Washington, wetland rating categories are based on the rarity of the type of wetland, our
ability to replace it, its sensitivity to adjacent human disturbances, and the functions it
performs. The objective of the rating system is to divide wetlands into groups that have
similar needs for protection.
The on -Site wetlands were rated as a mosaic according to state guidelines. The mosaic
was classified as Category III with an overall score of 18. This was comprised of a water
quality score of 7, a hydrologic score of 4, and a habitat score of 7 (See Wetland Rating
Forms in Appendix C). The in -wetland habitat had limited species diversity but was
improved by the presence of downed logs and the connectedness of the wetlands to a
surrounding landscape that was relatively undisturbed or only moderately disturbed.
The Jefferson County Codes requires
overoneonetbuffers (1) acre tin size (such asct these functions in
single-family
areas of moderate use for properties
residences).
Wetland boundaries have been marked in the field by pink "Wetland Delineation" tape.
Wetland buffers have been marked by orange and black tape. Soil test pits are marked
with blue and white -striped tape.
3.4 JEFFERSON COUNTY WETLAND MAP
Jefferson County online maps do not show wetlands mapped on the parcel or the
surrounding area (Jefferson County 2017b). Jefferson
ta the Property alcate wnert(Hoppeence of
a pond area (Wetland A-1) on the Property ina letter
2017).
WW1621-Ria1Wood1andDriveWD&BR.RPT/10032019/mas
19
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4.0 BUFFER REDUCTION
4.1 STANDARD BUFFER AND PROPOSED REDUCED BUFFER
As discussed in Section 3.3, the on-site wetlands are Category III Wetlands which
require a 110 foot standard buffer. The positions of these wetlands on the property
result in a buffer zone which would severely iimit use of the property for a single family
residence and septic system. Thus, the property owners wish to apply for a smaller
buffer in the vicinity of the proposed developr7ient area, utilizing Buffer Reduction and
offsetting this reduction through a Buffer Enhancement Plan (Planting and Erosion
Control Plan) set forth in this Chapter.
Buffer Reduction is allowed by the Jefferson County Code under certain circurnstances.
The proposed buffer averaging is a buffer reduction of 25%. This would reduce the
northern wetland buffer from the standard 110 feet to a reduced buffer of 82.5 feet from
the wetland boundary. This would be offset by Buffer Restoration and Enhancement as
per the Planting Plan (Section 4.3).
Figure 7 shows the proposed areas for Buffer Reduction. These conform with the
reduced 82.5 foot buffer shown in the Site Plan (see Figure 5). The buffer reduction will
provide for a developable area meeting the landowners needs, while maintaining and
improving the ecological integrity of the wetland -areas on the Site.
4.2 COMPLIANCE WITH COUNTY CODE REQUIREMENTS
Compliance with the Jefferson County Code for Buffer Reduction is mandated in
accordance with JCC 18.22.330 (7). This requires the submission of a Wetland
Delineation as well as a Special Report (as contained in this Chapter) prepared by a
qualified professional (Dr. G. Bradford Shea) which demonstrates that the buffer
reduction does not have any adverse impact on the existing functions and values of the
wetland.
The following conditions apply as set forth in JCC 18.22.330 (7).
(a) The buffer of a Category I or II wetland is not reduced to less than 75
percent of the required buffer or 50 feet, whichever is greater (This does
not apply since the Wetland is a Category III Wetland) -
(b) The buffer of a Category III or IV wetland is not reduced to less than 75
percent of the required buffer or 25 feet, whichever is greater (This
applies, 75% of the standard 110 foot buffer is 82.5 feet)
WW1621-Fina1Wcod1andDriveWD&BR.RPT/10032019/mas 20
TABLE 4. LIST OF NATIVE PLANTS FOR
BUFFER MITIGATION AND ENHANCEMENT
(Woodland Drive Project)
WW1575-WoodiandDriveWD&BR,Tab4/120618/mas 23
LocationF—S
eciesMinimumSize
Scientific Name
Number*�Gallv��)
A
Red-flowerin currant
Ribes san uineum
10
1 .. _
A
Ninebark
Ph soca us o ulifolius
�Holodiscus
10
1
A
Oceans ra
discolot
10
3
A
Red elderberry
Sambucus racemosa
10
3
A
Twinberr _
Lonicera involucrata
6
1
A _
Serviceben
Amelanchier alnifolia
6
1
A
A
Red alder
Alnus rubra
203
-
Sr�owber
�mphoricarp albus
�1 5�_
1
B
Western hemlock
Tsu a hetero h 1!a
20
5-f
B
Red elderlaerr.
Sambucus racemosa
15
- 3 -
B
IOceans ra
Holodiscus discolor
10
3
B
Salal
Gaultheria shallon
15
1
BPacific
_.B 4
rhododendron
Rhododendron macro h llum
15
1
Mock Oran e
Ph degt1phus lewish _
10
—C
Dou las fir
Pseudvfsu a menziesii
,
— 3
g
C
Western red cedar
Thu' licata
. _- --. 3
*BR=Bare Root -If bare root plants are used, over planting by 50-100 percent is
recommended to offset potential
increased mortality.
WW1575-WoodiandDriveWD&BR,Tab4/120618/mas 23
(c) The applicant implements reasonable measures to reduce the adverse
impacts of structures and appurtenances on the subject parcel as
determined by the administrator (see erosion control measures and buffer
enhancement measures in Section 4.3 et seq.)
(d) Buffer area reduction shall be minimized to accommodate only those
structures and appurtenances as approved by the administrator (the buffer
reduction area includes a short access driveway off of Woodland Drive, a
building pad and a septic system).
The Jefferson County Code specifies that buffers be enhanced or restored using native
plants. There are areas in the buffer zone that have been previously cleared for
pathways, or for septic test pits. These areas have been selected for planting areas
since the other areas within the standard buffer zone are forested with native
vegetation. In addition, areas around the proposed construction will be re -seeded with
grass seed to prevent any erosion into the wetlands.
4.3 BUFFER RESTORATION PLANTING
Plan#in�Areas
Three Planting Areas are specified within the buffer zone for buffer restoration
purposes. These areas lie on a relatively level bench at an elevation of about 262 feet
as per the Site Plan map (Planting Areas A, B & C). These areas are shown in Figure 7.
Planting Area A is an oblong ellipse roughly 28 feet in width and 92 feet in length. This
constitutes an area of roughly 2,800 square feet. Area B is a similar shape, of roughly
2,050 square feet. Area C is composed of two smaller planting areas (each 15' x 35') to
the east of the building site totaling roughly 1,050 square feet. Together, these three
planting areas are expected to offset and restore approximately 5,900 square feet of
buffer area which has been reduced to accommodate the development (see Figure 5).
Additional areas adjacent to the proposed building pad and drainfield should be
vegetated with a grass seed mixture to control erosion in those areas, during and
following construction. These are areas anticipated to be disturbed by grading and
construction activities.
Recommended plants for the Buffer Restoration are shown in Table 4. These plants
shave been selected to succeed using criteria including sun/shade conditions, soil type,
aspect and tolerance to environmental conditions such as excessive wind or sun
exposure etc.
WW1621-Fina1Wood1andDriveWD&BR.RPT/10032019/mas 22
Plan#in Conditions
The wetland Buffer Zone on the Site has been partly degraded and had plants removed
due to establishment of soil test pits for an on-site septic system. Other areas have
been affected by trails. Still others have apparently been affected by poor soils,
resulting in open canopy areas rather than full forest canopy.
These areas have been selected for buffer restoration as shown in Figure 7. Table 4
presents native plants which are recommended for replanting within the areas between
the reduced buffer boundary and the wetland boundary. These plantings, if successful
in meeting Performance Standards will offset ecological impacts of the buffer reduction
and will result in "No Net Ecological Loss" based on Westech's Professional Judgement.
Additionally, it is recommended that invasive species removal be implemented if
necessary and that erosion control measures (including reseeding in Planting Areas C)
be implemented as recommended.
It is important that plants be of sufficient size to survive and generally plants with
developed root systems are superior and meet Performance Standards much more
frequently than "bare root" plants. If "bare root" plants are used, it is recommended that
these be planted first in pots for several months prior to planting in the ground, provided
that such plants are well maintained, provided sufficient sunlight and are watered on a
regular basis. Alternatively, bare root plants may be substantially over=planted
(generally 50-100 percent)to account for expected die -off. Table 4 specifies pot sizes
for each species of plant recommended to restore and enhance the buffer zone near the
wetlands.
When planted, sufficient topsoil should be used below and around the plant root ball.
This generally requires an additional 4-6 inches of topsoil be placed around the root ball
of the plant. Soil should be placed in the hole, prior to placement of the plant and the
plant should be placed level with the surrounding ground. Bark -based mulch (2-4
inches) should be placed over and around the installed plant base. This will also protect
the plants from both excessive heat and cold, and to some extent from drought. This is
particularly important during the first two years following re -planting.
Invasive Species
Invasive species should be controlled as necessary within the Buffer Zone in order to
meet Performance Standards (see Section 4.4 below). The main invasive species
evident in the buffer zone are Himalayan Blackberry and Scotch Broom. These plants
are evident along Woodland Drive and at scattered locations in the buffer zone. They
should be removed during grading if disturbance of other native plants can be avoided,
or they may be removed by hand methods wherever appropriate.
WW1621-FinalWood1andDriveWD&BR RPT/10032019/mas 24
Erosion Control
Erosion control should include placement of a silt fence along the 82.5 foot buffer
boundary prior to construction. The purpose of this silt fence is to prevent excess silt or
soil from reaching the wetland or degrading the buffer zone, within the 82.5 foot
boundary. Additional erosion control measures should be implemented as necessary
including placement of wattles on non -vegetated areas, straw bales as necessary,
particularly during the rainy season and implementation of other standard erosion
control measures and Best Management Practices (BMP).
4.4 PERFORMANCE STANDARDS
Westech recommends that Performance Standards be implemented for the Project as
follows:
1) 100% survival of plantings for Year #1 (As -Built Report and 1 st Annual
Monitoring Report)
2) 90% survival of plantings during Years #2 through Year #5
3) Less -than 5% cover of invasive plants during the five (5) years of Monitoring
4) Effectiveness of Erosion Control Measures -- to include no evident erosion
into or near the Wetland during Years #1 - #5,
Compliance of the Project with these Performance Standards should be documented in
each Annual Monitoring Report.
4.5 ANNUAL MONITORING
Upon completion of establishment of native plants for buffer restoration (Table 4), the
landowners will submit an "As -Built" report. This report will document the plantings with
tabular presentation showing the plants installed, Site photos from established photo
stations, and a text description of the plantings and their conformance with this Plan.
Nursery receipts should be appended to that report, when applicable. The "As -Built
Report" should be submitted to Jefferson County for review and approval.
Within roughly one year from completion of the completion of plant installation, the first
of five consecutive annual Monitoring Reports should be submitted to Jefferson County.
Plant survival, invasive species and erosion control should be documented during this
first year and succeeding years in terms of meeting Performance Standards.
WW1 621-Fina1WoodlandDriveWD&BR.RPT110032019/mas 25
4.6 CONTINGENCY PLAN
In the event that Performance Standards are not met during any given year, a remedial
Contingency Flan will be prepared and implemented. Such Plans generally call for
additional plantings to make up for the non -surviving plants, coupled with corrective
actions for factors which appear to have led to the lack of success of the original
plantings. Such factors may include lack of sufficient watering, lack of adequate topsoil,
unhealthy nursery stock or other factors resulting from inadequate plants or planting
methods.
Other factors may be periodic factors beyond the control of the landowner such as
excessive drought or deep freeze conditions which may have led to plant die -off. Such
conditions may require well 1hougl1t Out mitigation measures to ensure success. These
may include approaches such as shifting of planting areas, soil amendments or
overplanting to achieve performance standards. Contingency flans are very case
specific and should be tailored to the situation and history of the Project.
WW162I+1na1WoodlandDriveWD&BR.RPT/10032019/mas 26
5.0 CONCLUSIONS AND RECOMMENDATIONS
5.1 CONCLUSIONS
A mosaic wetland system was identified and flagged on the Site. Figure 6 shows the location
and extent of the mapped wetland system (Wetlands A-1 thmugh A-5). This is a mosaic of
forested depressional wetlands which has been rated according to State guidelines (DOE
2014) and classified as a Category III Wetland. Jefferson County requires standard buffer
widths of 110 feet for this category of wetland and the proposed intensity of land use for the
Site. Chapter 4.0 documents a proposed buffer reduction to 82.5 feet in conjunction with a
Buffer Restoration and Enhancement Plan. That Plan is shown in Chapter 4.0 of this report.
Wetland boundaries have been marked in the field.
5.2 RECOMMENDATIONS
Westech recommends that all development on the Site take place outside of the approved
wetland buffers. Due to constraints on the Property (Site), in order to achieve a single-family
residence with a septic system and access road, it was necessary to reduce buffer size at
certain key locations. Buffer reduction has been proposed to reduce buffers by 25 percent.
With implementation of this Plan at the site the approved buffer reduction should result in no
net loss of wetland or buffer function (as provided by the Jefferson County Code).
WW1 621-FinalWoodland DriveWD&BR.RPT/10032019/mas 27
6,0 REFERENCES
Cooke, S.S. 1997, A Field Guide to the Common Wetland Plants of Western Washin tan
and Northwestern oreon. Seattle Audubon Society. Seattle, Washington.
Creative Design Solutions. 2018. Site Map with Septic System design. Port Angeles,
Washington.
Google Earth, 2017. Online mapping software. www.googleearth.com. Imagery date:
July 28, 2017.
Guard, J. 1995. Wetland Plants of Or on and Washin ton. Lone Pine Publishing.
Renton, Washington.
Hansen's. 2018. Hansen's Northwest Native Plant Database. www.nw lants.com
Hopper, P. 2017. Letter from Patrick Hopper, Jefferson County DCD to Bruce Raymond
dated May16, 2017. Port Townsend, Washington,
Hitchcock, C.L. and A. Cronquist_ 1973. Flora of the Pacific Northwest. University of
Washington Press, Seattle, Washington,
Jefferson County. 2017a. Critical Areas Code website, httg://www.g2.leffersonwa.us/
commdevelo mentiCritical%20Areas%200rdinance%2QWeb%20Files/CA Ord 03-
0317-08. df
Jefferson County. 2017b. Online Interactive Mapping website,
hfp:llwww.co. jefferson.wa. us/idms/mapserver.shtmi
Lyons, C.P. 1997. Wildflowers of Washington. Lone Pine Publishing. Renton,
Washington.
Munsell. 1994. Munsell Soil Color Charts. GretagMacbeth. New Windsor, New York.
Natural Resource Conservation Service (NRCS). 2017. Hydric Soils.
htf :Ilsails.usda. ovluselh dricl.
Pojar, J. and A. MacKinnon. 2004. Plants of the Pacific Northwest Coast, Lone Pine
Publishing Company, Redmond, Washington,
Taylor, R. 1995. Northwest Weeds. Mountain Press Publishing Company. Missoula
Montana.
WW1621-Fina1WoodlandDriveWD& BR. RPT/10032019/mas
28
U.S. Army Corp of Engineers (Corps). 2010. Regional Supplement tv the Garps of
Engineers Wetland Delineation Manual: Western Mountains Valles and Coast
Regions (Version 2.0). May 2010. Washington, D.C.
U.S. Department of Agriculture (USDA). 2018. (Natural Resource Conservation Service
(NRCS) Plants Database. hff ;!)fiants.usda, ov!'ava/
U.S. Department of Agriculture (USDA). 2012. 2012 National Wetland Plant List.
htt :11 tants. isda. ov/core/wetiandSearch.
U.S. Geological Survey. 1981. Quadrangle Map of Port Townsend South, Washington.
Scale 1:24,000. Published 1953, Photorevised 1981. Denver, Colorado.
Washington Department of Ecology (WDOE). 2014. Washington State Wetiands Rating
System for Western VIlashinetton. Thomas Hruby. Publication #14-06-029.
Olympia, Washington.
Washington Department of Ecology (WDOE). 1997. Washington State Wetiands
Identification and Delineation Manual. Publication #. 96-94. Olympia, Washington.
VWV1621-FinalWoodlandDriveWD&BR.RPT/100320191mas 29
APPENDICIES
WW1621-FinaiWoodlandDriveWD&BR.RPT/10032019/mas 30
APPENDIX A
SITE PHOTOGRAPHS
WW1575-WoodlandDriveWD.APPA/120618/mas A-1
No
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9
. . . . . . . . . .
4lk,
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VIM,
-7
r
'4P
APPENDIX B
WETLAND DATA FORMS
WWI 575-WoodlandDriveWD.APPB/120618/mas B-1
WETLAND DETERMINATION DATA FORM —Western Mountains, Valleys, and Coast Region
Project/Site: Woodland Wyk:_ _T City/County: 15,orl Townsendl3eflerson Cpunt Sampling Date: 613012017
Applicant/Owner: Bruce Raymond State: WA Sampling Point: 115H-1 iWejland A-1)
Investigator(s): Paul Ruben, Dr. G. Bradford Shea Section, Township, Range: A West
Landform (hillslope, terrace, etc.): [Depressional Local relief (concave, convex, none): Concave Slope (%): 0
Subregion (LRR) Northwest Forest Lat: - 48D03M26.69SN Long: 1 47M45.95 Datum: NAD83
Soil Map Unit Name: Clallam Saody.QWyellyLogm NWI classification: Depressional Forested
Are climatic i hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X 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 X No
Hydric Soil Present? Yes X No Is t' he Sampled Area
within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
VEGETATION — Use scientific names of plants.
Absolute Dominant Indicator
7 tratum (Plot size: 10m ] ° Cov r Species? Status
1- n s rubra 65% X FACW
2. Po ulus balsamifera 10% FACW
3. Thuja plicata 10% FAC
4.
85% = Total Cover
SaolinglShrub Stratum (Plot size: tom _)
30% X OBL
2 Lonicera involucrata
1. S & luci
25%
X FAQ
2. Lonicera involucrata
20%
X FAC
3, Gaultheria shallon
20%
X FACU
4 Rosa nutkana
10%
FAC
5 Salix sitchensis
5%
FACU
80% = Total Cover
Herk Stmium (Plot size:
1
30% X OBL
2 Lonicera involucrata
5% FAC
3 Polystichum munitum
3% FACU
4.
OBL species
x 1 =
FACW species
5.
FAC species
x 3 =
FACU species
6.
UPL species
7.
Column Totals:
8.
10.
_-
11.
_
38% = Total Cover
Woody Virte-Stratum (Plot size.-
1
ize:1
2.
= Total Cover
% Bare Ground in Herb Stratum 25%
worlcsneet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: .9 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:
80 (A1B)
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
x5=
Column Totals:
(A) (B)
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophylic Vegetation
_ 2 - Dominance Test is >50%
_ 3 - Prevalence Index is s3.0'
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
_ 5 - Wetland Non -Vascular Plants'
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes X No
US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2,0
SOIL Woodland Drive
Sampling Point: VSH_a..(W4
Profile
11?e5cr11711i1011: [Describe fo the depth Headed to document the Indicator arcanfirrrr tho ahsonco of indicators.)
Depth matrix Redax Fa ures
inches Calar { ois11 Calar 4n+st} % �r Loc
0-6" 10YR 211 ° Texture Remarks
100 /° Loamy Clay
6-15" 10YR 4/1 90% 7.5YR 3/4 10 C PL
Silty Clay
rT e: C-CanCentration. D=De letion, RM=Reduced Matrix, CSnCovered ar Coated Sand Grains. �Lo
Hd' 0 1
y , c o indicators; (Applicable to all LRRs, unless otherwise noted. )
Hislosol (Al)
-- fo ti H Hydric Sroi
Indicators for Problematic Hydric Soil
Histic Epipedon (A2)
— Sandy Redox (85)
^ Stripped Matrix (36)
X 2 cm Muck (Aio)
Black Histic(A3)Red
Hydrogen Sulfide (A4).
` Loamy Mucky Mineral (F1) (except MLRA 1)Very
..,.... Parent Materiaf (TF2)
— Shallow Dark Surface (TF12)
_,Depleted Below Dark Surface (Al 1.)
— Loamy Gleyed Matrix (F2)
_ Depleted Matrix (F3)
'� Other (Explain in Remarks)
Thick Dark Surface (Al2)
Muck Mineral(Si)
Sandy y ( )
— Redox Dark Surface F6 )
'Indicators of hydrophytic vegetation and
^Sand
_ Sandy Gleyed Matrix (S4)
— Depleted Dark Surface (F7)
Redox Depressions (F8)
wetland hydrology must be present,
Restrictive Layer (If present):
— Presence of Reduced Iron (C4)
unless disturbed or problematic.
Type:
— Recent Iron Reduction in Tilled Soils (C6)
_ FAC -Neutral Test )
Depth (inches):
_ Stunted or Stressed Plants (D1) (LRR A)
_ Other (Explain in Remarks)
Raised Ant Mounds (D6) (LRR A)
Remarks
Hydric Soil Present? Yes X No
HYDROLOGY
""••••.,.... ..rwvwyy rrfulGa[Df5•:
---- -----
-
Prim n i tors minima fonr uired check aj!hot qil ply)
— Surface Water (A1)ec
X High Water Table (A2)
Water -Stained Leaves (69) (except
>f dlcators f2 or more_�enuired]
X Water -Stained Leaves (B9) (MLRA 1, 2,
X Saturation (A3)
MLRA 1, 2, 4A, and 4B)
_ Salt Crust (1311)
4A, and 4B )
X Water Marks (81)
Sediment Deposits (B2)
.....,_ Aquatic Invertebrates (613)
V..- Drainage Patterns (1310}
_Dry -Season Water Table (C2)
Drift Deposits (63)
_ Hydrogen Sulfide Odor (C1)
_ Oxidized Rhizospheres along Living Roots (C3)
--Saturation Visible on Aerial Imagery (C9)
Geomorphic
X Algal Mat or Crust (84)
Iron
— Presence of Reduced Iron (C4)
_ Position (D2)
Shallow Aquitard ( D3
U3)
Deposits (B5)
— Surface Soil Cracks (66)
— Recent Iron Reduction in Tilled Soils (C6)
_ FAC -Neutral Test )
_ Inundation Visible on Aerial Imagery (B7)
_ Stunted or Stressed Plants (D1) (LRR A)
_ Other (Explain in Remarks)
Raised Ant Mounds (D6) (LRR A)
Sparsely Vegetated Concave Surface (138)
Frost -Heave Hummocks (D7)
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes X No Depth (inches): 6"
Saturation Present? Yes No Depth (inches): Wetland H
includes ca ilia froHydrology in e y gy P resent? Yes �C ` No
Describe Recorded Data [stream gauge, monitoring well, aerial photos, previous (nspections), if available
Remarks:
US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0
WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region
Cil !Count Port TownsandlJetfersatiCoun Sampling Date: 613012017
Project/Site:Woodland Drive — Y Y-
Applicant/Owner: ru Ra m n State: WA Sampling Point: VSH-2 (Upland)
Investigator(s); Pduf Ruben D+. G. Bradt Shea Section, Township, Range: flection 27. 1-aye0st1in 3t] N=1Ll3ariae 1 Wesl
Landform (hillslope, terrace, etc.): Small s e Local relief (concave, convex, none): None Slope (%): 1
Subregion (LRR): A _ _ Lat: 48D03M26.69SN __„-, Long: 122047M45.95SW Datum: NAD83
Soil Map Unit Name: Clallaffl . NWI classification:
Are climatic I hydrologic conditions on the site typical for this time of year? Yes X m No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X 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.
_ t
Hydrophytic Vegetation Present? Yes No X
Is the Sampled Area
Hydric Soil Present? Yes No X Within a Wetland? Yes
Wetland Hydrology Present? Yes No X
Rerrmrks:
VEGETATION - Use scientific names of plants.
Tree 5tra (Plot size: 10m
1. Alnus
2. Tsuda plicata
3.
4.
Sagjna(Shrub Strattem (Plot size: 10m
Absofute Dominant Indicalor
ov r ies? Status
50% X FACW
- 20% X FAC
70% = Total Cover
1.
2
Gaultheria shtallon
Rhododendron macrophyNum
65%
20%
_ _ XC_ _ E6CU
X J FACU
3
Lonicera involucrata
_ 5%
FAC
4.
x 1 =
FACW species
x2=
5.
x 3 =
FACU species
x 4 =
UPL species
x 5 =
90%
= Total Cover
Fit?rb
Stratum (Plot size: , 1 m }
1
i
10%
X FACU
2.
3.
4.
5.
6.
7.
8.
9.
10,
11
10%
= Total Cover
woodyVine 5 ratum (Plot size:
1.
2.
= Total Cover
Bare Ground in Herb Stratum 40%
Remarks: y
No X
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 2 (A)
Total Number of Dominant
Species Across All Strata: 5 (t3)
Percent of Dominant Species
That Are OBL, FACW, or FAC:
40 (A113)
Prevalence Index worksheet:
_ Total % OVer Of: -
Il yllin1
OBL species
x 1 =
FACW species
x2=
FAC species
x 3 =
FACU species
x 4 =
UPL species
x 5 =
Column Totals:
(A) (n)
Prevalence Index = BIA =
Hydrophylte Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
_ 2 - Dominance Test is >50%
3 - Prevalence Index is s3.0'
4 - Morphological Adaptations' (Provide supporting
data iii Remarks or on a separate sheet)
5 - Wetland Non -Vascular Plants'
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic
Vegetation
Present? Yes No X
US Army Corps of Engineers Western Mountains, Valleys, and Coast W Version 2.0
SOIL Woodland Drive
Sampling Point: VSH-2 (UpD
Profile 1Jescription: {Describe to tits depth needed to documenE the indicator or Conff►m the absence of indicators.)
Deptls atri Redox Fea r
inc s — Co1ar (;nit 9'o C 1 r oist,L_
0-3" 10YR 312 100°/o % We toc Texture R marks "
L2amy.Siil
3-15 10YR 412 w 9536 7.5YR 4/6 5%
._ _Cla�ye r� 5ilt
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
„ Histosol (At)
Sandy Redox (85)
Histic Epipedon (A2)
Stripped Matrix (SG)
Black Histic (A3)
Loamy Mucky Mineral (F1) (except MLRA 1)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Depleted Below Dark Surface (A11)
_ Depleted Matrix (F3)
— Thick Dark Surface (Al2)
Redox Dark Surface (F6)
— Sandy Mucky Mineral (S1)
_ _ Depleted Dark Surface (F7)
— Sandy Gleyed Matrix (S4)
Redox (F8)
_
Restrictive Layer (if present):
--'—
Type:
Depth (inches):
HYDROLOGY
P 'm Ind' s minimurn f ne r ui d• the k
_ Surface Water (A1)
__. High Water Table (A2)
_ Saturation (A3)
Water Marks (B1)
_ Sediment Deposits (132) _
— Drift Deposits (133)
Algal Mat or Crust (134)
— Iron Deposits (135)
_ Surface Soil Cracks (136)
— Inundation Visible on Aerial Imagery (B7)
_ Sparsely Vegetated Concave Surface (138) _
sins. 21-ocation: PL=Pare Lining, M=Ma
Indicators for Problematic Hydric Sc
_ 2 cm Muck (A10)
_ Red Parent Material (TF2)
Very Shallow Dark Surface (TF12)
Other (Explain in Remarks)
Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Hydric Soil Present? Yes No X
I !ha I
Water -Stained Leaves (B9) (except
MLRA 1, 2,4A, and 413)
Salt Crust (B11)
Aquatic Invertebrates (613)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3
Presence of Reduced Iron (04)
Recent Iron Reduction in Tilled Soils (C6)
Stunted or Stressed Plants (D1) (LRR A)
Other (Explain in Remarks)
�nd�yr {ndi a ors-• 2 or mor�_rgqu{red]
Water -Stained Leaves (139) (MLRA 1, 2,
4A, and 4113)
— Drainage Patterns (610)
Dry -Season Water Table (C2)
— Saturation Visible on Aerial Imagery (C9)
-•„_ Geomorphic Position (D2)
Shallow Aquilard (D3)
_ FAC -Neutral Test (D5)
Raised Ant Mounds (D6) (LRR A)
Frost -Heave Hummocks (D7)
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No X
includes ca ilia Erin e
Desrrihe Recorded Dafa (scream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
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: Woodland Qrive City/County: Pori T wns •.n lJ rferson Co nty Sampling Date: 6/30/2017
Applicant/Owner: Bruce Raymond State: WA Sampling Point: VSH-3 (Wet)
Investigator(s): Paul Ruben. Dr. G. Bradford. Shea _ Section, Township, Range:
Landform (hillsiope, terrace, etc.): Depressional _ Local relief (concave, convex, none): Concave __ Slope (%): 0
Subregion (LRR): A Lai: 4003M26.69SN Long: 122D47M45.95SW Datum: NAD83
Soil Map Unit Name: Cla am NWI classification: Depressional Forested
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X 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 X No
Hydric Soil Present? Yes X No IS the Sampled Area
within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No _
VEGETATION - Use scientific names of plants.
Absolute Dominant Indicator
Tr Str m (Plot size: 10� % Cover ci ? Status
1. ALnus rubra 50% X FACW
2_ Po ulus balsamifera 25% _ _ X _ FACW
3. Tsuda heterphylla 15% FACU
4.
90% = Total Cover
$aolino/Sh1Ut7sSl IuIni (Plot size: 10m )
1 Rosa nutkana 25% X FAC
2 Gautfheria shallon 20% X FACU
3 Salix lucida 15% X FACW
4.
5.
60% = Total Cover
Herb Stratum (Plot size: 1m
1, r �.oY obra+lrr+a 70% X ODL
2.
3.
4.
5. —
6.
7.
6.
9.
10.
11.
70% = Total Cover
Woody V1nq Stratum (Plot size: , 1m }
1. Rubus ursinus 3%
2.
% Bare Ground in Herb Stratum 15%
Remarks:
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 FAG:
(AIB)
Prevalence Index worksheet:
To al % Cover of: Multioly
by:
OBL species x t
FACW species x 2 =
FAC species x3=
FACU species x 4 =
UPL species X5=
Column Totals: (A)
{B)
Prevalence Index = B1A W
X 1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is >50%
3 - Prevalence Index is S3.0'
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
5 - Wetland Non -Vascular Plants'
~_ Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
FACU I Hydrophytic
Vegetation
Present?
3% = Total Cover
Yes _ X No
US Army Corps of Engineers Western Mountains, Valleys, and Coast •- Version 2.0
SOIL
Woodland Drive
Sampling Point: VSH•-3 (Wet)
r rurn9 LIesc rtpnon: (D*scribe to tho depth Hooded fv document the indicator or confirm the absence of lndicatvrs.)
Depth Mad Redox Fea res
inchesj_ _Calnr(meist�_ °% i r is °
_ e Loc- Texture Remarks
0-6" 10YR 211 100% SIIlLga_m —
6-12" 10YR 4/1 90% 10YR 211 10% D PL
Cla___L+gy Sitt Stripping from surface soil
- • -•-• � . •n-ncvuceu ivrarnx �a=s;gvered or Coated Sand G
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)
Histosol (Al)
_ Sandy Redox (S5)
_ Histic Epipedon (A2)
_ Stripped Matrix (S6)
Black Histic (A3)
Loamy Mucky Mineral (F1) (except MLRA 1)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (172)
Depleted Below Dark Surface (All)
— Depleted Matrix (173)
— Thick Dark Surface (Al2)
_ _ Redox Dark Surface (F6)
_,-• Sandy Mucky Mineral (S1)
_ Depleted Dark Surface (F7)
Sandy Gieyed Matrix (S4)
Redox Depressions (Fe)
Type:
Depth (inches):
Indicators for Problematic Hydric S(
2 cm Muck (A1o)
Red Parent Material (TF2)
Very Shallow Dark Surface (TF12)
_ Other (Explain in Remarks)
'Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic,
Hydric Soil Present? Yes X No
HYDROLOGY
—------- -- - —
Welland Hydrology Indicators;
—
Pri Indicators minimum f uir
h a th tliumly
— Surface Water (Al)
_ High Water Table (A2)
Water -Stained Leaves (89) (except
Secondary Indi a r, (,amore reoiredl
Water -Stained Leaves (B9) (MLRA 1, 2,
Saturation (A3)
MLRA 1, 2,4A, and 413)
Salt Crust (811)
4A, and 413 )
_ Water Marks (81)
,_..-„ Sediment Deposits (82)
__._
_Aquatic Invertebrates B13
( )
__.. Drainage Patterns (610)
— Dry -Season Water Table (C2)
Drift Deposits (93)
•_„- Hydrogen Sulfide Odor (Cl)
_Saturation Visible on Aerial Imagery
9 ry (C9)
—
_ Algal Mat or Crust (64)
..._, Oxidized Rhizospheres along Living Roots (C3)
ion
,�, Geomorphic Position (D2)
Iron Deposits
— Presence of Reduced Iron (04)
— Recent Iron Reduction in Tilled Soils C6
( )
_,,,••• Shallow Aquilard
F
,_•_ Surface Soil Cracks B6
Cracks ( )
Inundation Visible on Aerial Imagery
--,_• Stunted or Stressed Plants (D1) (LRR A)
..� AC••Neutral Test (DS)
_ Raised Ant Mounds (D6) (LRR A)
_ (B7)
Sparsely Vegetated Concave Surface (68)
— Other (Explain in Remarks
Frost -Heave Hummocks (D7)
Surface Water Present? Yes No
X Depth (inches)
Water Table Present? Yes X No
Depth (inches): 11"
Saturation Present? Yes X No
ca ilia fri e
Depth (inches):
Wetland Hydrology Present? Yes X No
-
Describe
Describe Recorded pale {stream gauge, monitoring well, aerial photaS, previous inspections), if available:
US Army Corps of Engineers Western Mountains, Valleys, and Coast _ Version 2.0
WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region
Project/Silo: WoodlaCit /Count Port TovansendlJeffe on CotimL Sampling Date: 8130120'17
nd Drive .__ City/County: _
Applicant/Owner:. Rr,ra Ravm❑nd _ Slate: WA Sampling Point: VSH-4 (Upland)
Investigator(s): Paul Ru n Q[. G. Bradford Sh Section, Township, Range:
18%
Landform (hillslope, terrace, etc.): Sma sloe Local relief (concave, convex, none): None Scope (%):
Subregion (ERR):
A Lat: 40D03M26.69'N Long: 122D47M45.95SW _Datum: NAD83
• ---
Soil Map Unit Name: Clallam NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances' present? Yes
(if needed, explain any answers in Remarks)
Are Vegetation , Soil , or Hydrology naturally problematic?
X No
SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes No X
Hydric Soil Present? Yes No X Is the Sampled Area
within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
F2emari[s: J
VEGETATION — Use scientific names of plants.
US Army Corps of Engineers Western Mountains, Valleys, and Coast -- Version 2.0
Absolute
Daminanl Indicator
Dominance Test worksheet:
free Stratum (Plot size, 10m }
ar
Species? Status
Number of Dominant Species
60%
FACW
That Are OBL, 1=ACW, or FAC: (A)
1. Alnus rubra
2. Thuja heterphylla
ZQ%
FACU
Total Number of Dominant
Species Across All Strata: (B)
3
4.
Percent of Dominant Species
80%
= Total Cover
That Are OBL, FACW, or FAC: (A1B)
Sa li IShrub Stra i (Plot size: 10111 )
Prevalence Index worksheet:
i. Gaulthmrla shallon
90%
FACU
Tata! %C ver f: _ Multi Iv b� vim -
2.
OBL species x 1 =
3.
FACW species x 2 =
4.
FAC species x 3 =
5.
FACU species x 4 =
90%
=Total Cover
UPL species X5=
Herb Stratum (Plot size: 1m
10%
FACU
Column Totals: (A) (l3)
1. Pterldfum acluifrniurn
2
Prevalence Index = B1A =
Hydrophytic Vegetation Indicators:
3
1 • Rapid Test for Hydrophytic Vegetation
4
5_
2 - Dominance Test is >50%
3 - Prevalence Index is s3.0'
6
_
4 - Morphological Adaptations' (Provide supporting
7
data in Remarks or on a separate sheet)
8.
5 -Wetland Non -Vascular Plants`
9.
Problematic Hydrophytic Vegetation' (Explain)
10.
_
'Indicators of hydric soil and wetland hydrology must
11,
be present, unless disturbed or problematic,
10%
= Total Cover
W_oao dv ape Stratum (Plot size: )
1
Hydrophytic
Vegetation
2,
Present? Yes No X
Total Cover
% Bare Ground in Herb Stratum
--
US Army Corps of Engineers Western Mountains, Valleys, and Coast -- Version 2.0
SOIL
Woodland Drive
Sampling Point VSH U 1
+� u"t;W[ron: {vascill to the depth needed to document Tfie indicator or confirm the absence of indicators.)
Depill Rte_ .`_ R(dgx fieatureS
in a Color m is %
0-15Col mist
° T �� __ Texture I� arks
10YR 3/1 95% 7.5YR 416 5% C PL 5and_y Glav
Hydric Soil Indicators: (Applicable to all LRRs�unless otherwise noted.)LVdceo nano G.
Histosol (Al)
— Sandy Redox (55)
Histic Epipedon (A2)
— Stripped Matrix (SG)
Black Histic (A3)
Hydrogen Sulfide (A4)
— Loamy Mucky Mineral (F1) (except MLRA 1)
Depleted Below Dark Surface (A11)
Loamy Gleyed Matrix (F2)
Depleted Matrix (0)
Thick Dark Surface (A 12)
_. Redox Dark Surface (F6)
Sandy Mucky Mineral (S1)
Depleted Dark Surface (F7)
_ Sandy Gleyed Matrix (S4)
Redox Depressions (F8)
Restrictive Layer(if present):
Presence of Reduced Iron (C4)
Type:
Depth (inches):
Remarks:
HYDROLOGY
Indicators for Problematic Hydric Sc
2 cm Muck (A10)
Red Parent Material (TF2)
_ Very Shallow Dark Surface (T 112)
_ Other (Explain in Remarks)
'Indicators of hydrophylic vegetation and
wetland hydrology must be present,
unless disturbed or problematic
Hydric Soil Present? Yes No X
■■vux,nu rryorology Indicators:
PrImally I Ii a mini num of one re!J! Ich ck:ilI t I
_ Surface Water (A1)
Water -Stained Leaves (B9) (except
High Water Table (A2)
MLRA 1, 2, 4A, and 413)
Saturation (A3)
— Salt Crust (B11)
_ Water Marks (131)
_ Aquatic Invertebrates (B13)
_ Sediment Deposits (62)
Hydrogen Sulfide Odor (C1)
,_ . Drift Deposits (133)
_ Oxidized Rhizospheres along Living Roots (C3)
_ Algal Mat or Crust (64)
Presence of Reduced Iron (C4)
— Iron Deposits (B5)
Recent Iron Reduction in Tilled Soils (C6)
— Surface Soil Cracks (B6)
— Stunted or Stressed Plants (131) 11A)
Inundation Visible on Aerial Imagery (137)
— Other (Explain in Remarks)
_ Sparsely Vegetated Concave Surface (B8)
Plald tit?.4o rvaFlnnn.
— --- ---- ----.. �_
-Secol ry Ind icalors at mor re ire
Water -Stained Leaves (B9) (MLRA 1, 2,
4A, and 48)
Drainage Patterns (1310)
_ Dry -Season Water Table (C2)
Saturation Visible on Aerial Imagery (C9)
_ Geomorphic Position (D2)
_ Shallow Aquitard (D3)
FAC -Neutral Test (D5)
Raised Ant Mounds (D6) (LRR A)
— Frost -Heave Hummocks (D7)
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):...
Saturation Present? Yes No Depth (inches): Watland Hydrology Present? Yes No X
intrudes ce ilia .fringe
Descnbe Recorded DaData (stream gauge, monitoring well, aerial photos, previous inspections), if avail
marks:
US Army Corps of Engineers
Western Mountains, Valleys, and Coast -- Version 2.0
APPENDIX C
WETLAND RATING FORM AND MAPS
WW1 575 -Wood land DriveWD.APPC/ 120618/mas C-1
Wetland name or number A(1-5)
RATING SUMMARY - Western Washington
Name of wetland (or ID #): Woodland Drive
Rated b.�— Date of site visit: 6/6/17
�y--p1,_.S� dfard , Trained by Ecology?X Yes _____No Date of training
HGM Class used for rating DO ressianal Wetland has multiple HGM classes? --Y X N
NOTE: Form is not complete without the figures requested (figures can be combined).
Source of base aerial photo/map _
OVERALL WETLAND CATEGORY III (based on functions— or special characteristics_)
1. Category of wetland based on FUNCTIONS
Category 1– Total score = 23 - 27
Category If – Total score = 20 - 22
core for each
X Category III – Total score = 16 -19
unction based
n three
[ratings
Category IV – Total score = 9 - 15
ordr of ratings
FUNCTION Improving Hydrologic Habitat
important)
Water Quality
Circle the appropriate ratings
9 = H,H,H
Site Potential H M -_L-- yy
H H L
8 = H,H,M
Landscape Potential H L H g L H M L
7= H,H,L
H M �L ,,
ValueL M
H L H M
` TOTA. L
7= H,M,M
6= H,M,L
_
Score Based on
6 = M,M,M
Ratings 6 4 6
16
5 = H,L,L
5 = M, M, L
4 = M, L, L
2. Category based on SPECIAL CHARACTERISTICS
3 ` L,L,L
of wetland
CHARACTERISTIC
CATEGORY
Estuarine
1
II
Wetland of High Conservation Value
I
Bog
I
Mature Forest
I
Old Growth Forest
I
Coastal lagoon
1
II
Interdunal III
III IV
None of the above
Wetland Rating Systcjit for Western WA; 2014 Update
Rating norm - Effective Janumy 1, 2015
1
Weiland name or number -6-Ll -57
Maps and figures required to answer questions correctly for
Western Washington
De ressiana -Wetlands
Cowardin plant classes
Location of outlet (can be added to mag of h droger►aasi
Boundary of area within 150 ft of the wetland can be added to anotherjig�
Map of the contributing basin
1 km Polygon: Area that extends 1 km from entire wetland edge -including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology websi-
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
RiveCm Wetlands
Map of:
Cowardin plant classes
Ponded depressions
Boundary of area within 150 ft of the wetland (can be added to another i t
Plant cover of trees, shrubs, and herbaceous plants
Width of unit vs. width of stream (con be added to anotherfrgurej
Map of the contributln$ basin
1. km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of ma of 3Q3(dj listed waters in basin (from Ecology websi+
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Lake Fringe Wetlands
Map of;
Cowardin plant classes
Plant cover of trees, shrubs, and herbaceous plants
Boundary of area within 150 ft of the wetland (can be added to another ig►
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 3031dy listed waters in basin (from Ecology websi'
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
Slope Wetlands
Ma af:
Cowardin plant classes
Hydroperiods
Plant cover of dense trees, shrubs,
Plant cover of dense, rigid trees, shi
(carp be added to lgure above
Boundary of 150 ft buffer can be a
1 km Polygon: Area that extends 1
poly ons for accessible habitat and
Screen ca ture of ma of 303 d) fis
Screen capture of list of TMDLs for
and herbaceous plants
ubs, and herbaceous plants
ac
to another fi ure
km from entire wetland edge - including
undisturbed habitat
ted waters in basin from Ecology websil
WRIA in which unit is found (from web)
Wetland Rating System for Western WA: 2019 Update
Rating norm - rsffective January 1, 2015
To answer sfuestic
R13, H 1.1, H 1.4
D 1.4, H 1.2
D 4.1
D 2.2, D 5.2 -�
D 4.3, D 5.3
H 2. 1, H 2.2, H 2.3
D 3.1, D 3.2
D 3.3
To answer:questio
H 1.1, H 1.4
H 1.2
R 1.1
R 2.4
R 1.2, R 4.2
R 4.1
R 2.2, R 2.3, R 5.2
H 2.1, H 2.2,li 2.3
R 3.1
R 3.2, R 3.3
To answer quest►ons-
L 1.1, L 4.1, H 1.1, H 1.4
L 1.2
L 2.2
H 2.1, H 2.2, H 2.3
L 3.1, L 3.2
L 3.3
To. answer ►
H 1.1, H 1.4
H 1.2
S1.3
S4.1
S 2.1, S 5.1
H 2.1, H 2.2, H 2.3
S 3.1, S 3.2
S3.3
2
.ure
C-4
re #
Wetland name or number A-1-5)
HGM Classification of Wetlands in Western Washington
For questions 1-7, the criteria described niust apply to the entire unit being rated.
If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you
probably have:a unit _Wjth multiple HGM classes. In. this case, identify which hydrologic criteria in
questions 1-7 apply, and go to Question 8.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
(9- go to 2 YES - the wetland class is Tidal Fringe - go to 1.1
1..1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)?
NO - Saltwater Tidal Fringe (Estuarine) YES - Freshwater Tidal Fringe
Ifyour wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. tf it
is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to
score functions for estuarine wetlands,
2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater
and surface water runoff are NOT sources of water to the unit.
N❑ go to 3
YES - The wetland class is
Ifyour wetland can be classified as a Flats wetland, use the form for Depressional wetl nlds.5
3. Does the entire wetland unit meet all of the following criteria?
_._.The vegetated part of the wetland is on the shores of a body of permanent open water (without any
plants on the surface at anytime of the year) at least 20 ac (8 ha) in size;
._.,_At least 30% of the open water area is deeper than 6.6 ft (2 m).
M- go to 4 YES - The wetland class is Lake Fringe (Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
.The wetland is on a slope (slope can be verygradual),
—The water flows through the wetland in one direction (unidirectional) and usually comesfrom
seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks,
_._._The water leaves the wetland without being impounded.
-- go to 5 YES - The wetland class is Slope
NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and
shallow depressions or behind hummocics (depressions are usually <3 ft diameter and less than 1. ft
deep),
S. Does the entire wetland unit meet all of the following criteria?
.The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that
stream or river,
._._._The overbank flooding occurs at least once every 2 years.
Wetland Raring System fol' Western WA: 2019• Update
Rating Form - Efrective lanuaty 1, 2015
Wetland name or number AA1-5)
QO)TE.
-go to 6 YES - The wetland class is Riverine
The Riverine unit can contain depressions that are filled with water when the river is not
flooding
6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the
surface, at some time during the year? This means that any outlet, if present, is higher than the interior
of the wetland.
NO - go to 7 CES The wetland class is Depressional
7. is the entire wetland unit located in a very flat area with no obvious depression and no overbank
flooding? The unit does not pond surface water more than a few inches. The unit seems to be
maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural
outlet.
NO - go to 8 YES - The wetland class is Depressional
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM
classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small
stream within a Depressional wetland has a zone of Flooding along its sides. GO BACK AND IDENTIFY
WjlICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT
AREAS 1N THE UNIT (matte a rough sketch to help you decide). Use the following table to identify the
appropriate class to use for the rating system if you have several HGM classes present within the
wetland unit being scored.
NOTE: Use this table only if the class that is recommended in the second column represents 10% or
more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2
is less than 70% of the unit; classify the wetland using the class that represents more than 90% of the
total area.
if}lou are still unable to determine which of the above criteria apply to your wetland; or ifyou have
rr:ore than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the
rating.
Wetland Ratin6 5ystelr, for Western WA: 2019. Update
Rating Dorm - Effective January 1, 201.5
Wetland name or number AJI -5)
DEPRESSIONAL AND FIATS WETLANDS
Water Quality Functions - Indicators that the site functions to improve water quality
D 1.0. Does the site have the potential to improve water quality?
D 1.1. Characteristics of surface water outflows from the_ - 1:
Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet).
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlepointt.
- 3
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanentlyflowin points = 2
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a perms entl flowin ditch g points = 1
D 1.2. Th soil 2 In below th surface or ff I er is true clay or true organic (use NRCS definiitions).Yes Yes= = 0
D 1.3. Characteristics and distrib tion of persistent lants (Emergent, Scrub -shrub, and/or Forested Cowardin classes):
Wetland has persistent, ungrazed, plants > 95% of area
Wetland has persistent, ungrazed, plants > % of area points = 5
Wetland has persistent, ungrazed plants > i points = 3
/io of area
Wetland has persistent, ungrazed plants <1/io of area points = 1
D 1.4. Characteristics of a an ! inor inund Lion; — points = 0
This is the area that is ponded for at least 2 months. See description in manual.
Area seasonally ponded is > % total area of wetland
Area seasonally ponded is > % total area of wetland points = 4
Area seasonally ponded is < % total area of wetland points = 2
Total for D 1 points = 0
Add the points in the boxes above
Rating of Site Potential If score is: X 12-16 = H
=6-11 = M _0-5 = L Record the rating on the first page
D 2.0. Does the landscape have the potential to support the water quality function of the site?
D 2.1. Does the wetland unit receive stormwater discharges?
Yes =1 No=O
D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants?
D 2.3. Are there septic systems within 250 ft of the wetland? Yes= 1 No = 0
D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2 3?- 0
Source
Total for D 2 Yes = 1 No = 0
1
2
4
61
Add the points in the boxes above
Rating of Landscape Potential If score is:_3 or 4 = H 1 or 2 = M 2
--� _0 = L Record the rating on the first page
D 3.0. Is the water quality improvement provided by the site valuable to society?
D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the
303(d) list?
D 3.2. Is the wetland in a basin or sub -basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0
D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer VES
if there Is a TMDL for the basin in which the unit is found)?
Total for D 3 Yes = 2 No = 0 0
Rating of Value If score is: -2-4 = HAdd the points in the boxes above
_1 = M X 0 = L 0
Record the rating on the first page
Wetland Rating System for Western WA: 2014 Update
Rating I orm - Effective January 1, 2015 5
Wetland name or number A-(! -5)
DEPRESSIONAL AND FLATS WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation
F-40. Does the site have the potential to reduce flooding and erosion?
D 4.1. Characteristics of surface water outflows from the wetland:
surface water leaving it (no outlet)
points = 4
Wetland is a depression or flat depression with no 2
has intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoint
Wetland
Wetland an
is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch
points 1
= 0 2
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing
points
D 4.2. De th of Stora a durin wet periods- Estimate the height of parading above the bottom of the outlet. For wetlands
with no outlet, measure from the surface of permanent water or if dry, the deepest part.
points= 7
Marks of ponding are 3 ft or more above the surface or bottom of outlet
2 ft to a 3 ft from surface or bottom of outlet
points = 5
Marks of ponding between
Marks are at least 0.5 ft to z 2 ft from surface or bottom of outlet
points = 3
points = 3
The wetland is a "headwater' wetland
points = 1
Wetland is flat but has small depressions on the surface that trap water
points= 0 0
Marks of pondinR less than 0.5 ft (6 in)
to Stora a in the watershed: Estimate the ratio of the area of upstream basin
D 4.3. Contrib tion of the wetland
contributing surface water to the wetland to the area of the wetland unit itself.
points = 5
The area of the basin is less than 10 times the area of the unit
points = 3
The area of the basin is 10 to 100 times the area of the unit
points = 0
The area of the basin is more than 100 times the area of the unit
points = 5
Entire wetland is in the Flats class b
Add the points in the boxes a ove ,,
Total for D 4
Record the rating on the first page
Rating of Site Potential If score is:__ -_12-16 = H �6-11 = M X 0 5 = L
D 5.0. Does the landscape have the potential to support hydrologic functions of the site? Yes = 1 No = o
D 5.1. Does the wetland receive stormwater discharges? 1
D 5.2, Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 Nc = 0
D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at
>1 residence/ac, urban, commercial, agriculture, etc.)?
Yes=1 No=O 0
Add the points in the boxes above 1
Total for D 5
Record the rating on the first page
Rating of Landscape Potential if score is:_3 = H 1 or 2 = M _0 = L
_X_1
D 6.0. Are the hydrologic functions provided by the site valuable to society!
D 6.1. The unit is in a lands a e that has floodin roblems. Choose the description that best matches conditions around
the wetland unit being rated. Do not add points. Choose the hi lest score i more tlt r: on condition is met.
The wetland captures surface water that would otherwise flow down -gradient into areas where flooding has
damaged human or natural resources (e.g., houses or salmon redds): points = 2
• Flooding occurs in a sub -basin that is immediately down -gradient of unit.• points = 1
Surface flooding problems are in a sub -basin farther down -gradient. points= 1
Flooding from groundwater is an issue in the sub -basin.
The existing or potential outflow from the wetland is so constrained by human or natural conditions pthat
ints h 0
e 0
water stored by the wetland cannot reach areas that flood. Explain why
There are no problems with flooding downstream of the wetland.
points = 0 0
D 6,2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control f plaNo=O ? 0
Add the points in the boxes above 0
Total for D 6
Record the rating on the first page
Rating of Value If score is:_2-4 = H ®1 = M _X_0 = L
Wetland RatingSyst[au rot' Western WA: 2014 Update
Rating Form — flectiVe January 1, 20'15
Wetland name or number A (1-5)
These questions apply to wetlands of all HGM classes.
[HABITAT FUNCTIONS - Indicators that site functions to provide important habitat
H 1.0. Does the site have the potential to provide habitat?
H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the Forested class. Check the
Cowardin plant classes in the wetland. Up to 10 patches may be combined for each class to meet the threshold
of % ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked.
Aquatic bed
Emergent
4 structures or more: points = 4
Scrub -shrub (areas where shrubs have > 30% cover) 3 structures: points = 2
2 structures: points = 1
_X Forested (areas where trees have > 30% cover)
If the unit has a Forested class, check if: 1 structure: points = 0
-X_The Forested class has 3 out of 5 strata (canopy, sub -canopy, shrubs, herbaceous, moss/ground-cover)
that each cover 20% within the Forested polygon
H 1.2. Hydroperiods
Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover
more than 10% of the wetland or % ac to count (see text for descriptions of hydroperiods).
Permanently flooded or inundated 4 or more types present: points = 3
XSeasonally flooded or inundated
Occasionally flooded or inundated 3 types present: points = 2
_Saturated only 2 types present: points = 1
_Permanently flowing stream or river in, or adjacent to, the wetland 1 type present: points = 0
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland
®Freshwater tidal wetland 2 points
2 points
H 1.3. Richness of plant species
Count the number of plant species in the wetland that cover at least 10 ft Z.
Different patches of the same species can be combined to meet the sire threshold and you do not have to name
the species. Do not Include Eurasian milfoll, reed canarygrass, purple loasestrife, Canadian thistle
If you counted: > 19 species
5 - 19 species points = 2
< 5 species points = 1
H 1.4. Interspersion of habitats
points = 0
Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or
the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you
have four or more plant classes or three classes and open water, the rating is always high.
o
None = 0 points Low =1 point
All three diagrams
in this row
are HIGH = 3points
Wetland Rating Systern for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
(*)CO
Moderate = 2 points
13
Wetland name or number A (1 -5)
H 1.5. Special habitat features:
Check the habitat features that are present in the wetland. The number of checks is the number of points.
_Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long).
_&_Standing snags (dbh > 4 in) within the wetland
_Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m)
over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m)
_Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree
slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered
where wood is exposed)
X—At least' ac of thin -stemmed persistent plants or woody branches are present in areas that are
permanently or seasonally inundated (structures for egg -laying by amphibians)
X Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of
strata)
Add the points in the boxes above
Total for H 1
Rating of Site Potential If score is:_35-18 = H X 7-14 = M _0-6 = L Record the rating on the first page
H 2.0. Does the landscape have the potential to support the habitat functions of the site?
H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). 90
Calculate: 80% undisturbed habitat 20 + [(%moderate and low intensity land uses)/2] 10 =
If total accessible habitat is:
points = 3
>'/, (33.3%) of 1 km Polygon
20-33% of 1 km Polygon
points = 2
points = 1
10-19% of 1 km Polygon
points = 0
< 10% of 1 km Polygon
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate: 70% undisturbed habitat 30 + [(% moderate and low intensity land uses)/2] 15 = 85
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10-50% and in 1-3 patches points = 2
Undisturbed habitat 10-50% and > 3 patches points= 1
Undisturbed habitat < 10% of 1 km Polygon points = 0 3
H 2.3. Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use points = (- 2)
5 50% of 1 km Polygon is high intensity points = 0 D
Total for H 2 Add the points in the boxes above 6
Rating of Landscape Potential If score is: X 4-6 = H _1-3 = M _< 1= L Record the rating on the first page
H 3,0. Is the habitat provided by the site valuable to society?
H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score
that applies to the wetland being rated.
Site meets ANY of the following criteria: points = 2
— It has 3 or more priority habitats within 100 m (see next page)
— It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists)
— It is mapped as a location for an individual WDFW priority species
— It is a Wetland of High Conservation Value as determined by the Department of Natural Resources
— It has been categorized as an important habitat site in a local or regional comprehensive plan, in a
Shoreline Master Plan, or in a watershed plan points - 1
Site has 1 or 2 priority habitats (listed on next page) within 100 m -
Site does not meet any of the criteria above aints = 0 0
Record the rating on the first page
Rating of Value If score is: -2 = H _1 = M XO = L
Wetland Rating • S Y• stem for Western WA: 2014 Update 14
Rating Form - Effective January 1, 2015
Wetland name 01'number&_(1-5)
WDFW Priority Habitats
(see complete descriptions of WDFW priority habitats, and the counties in which they can
be found, fir: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List, Olympia, Washington.
177 pp. i t ,• .i. i 1, !0 [ 5 i p
1.1111 f.1 c •r. , 1N-QJi or access the list from here:
Count ]low many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is
independent of the land use between the wetland unit and the priority habitat
— Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha).
— Blodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and
wildlife 0111 descriptions in WDpW Ptl.SreOrt),
— Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock,
— Old-growth/Mature Forests: - -Stands Of at least 2 tree
layered aecanopy with occasional small ripenings; with at least 8 trces/ac (20 trees/ha ) > 32 in (81sCm) bh yr m200
years of age. Jtij;3tttte forests - Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover "nay be less
than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that
found in old-growth, 80-200 years old west of the Cascade crest.
— Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak
component is important (full descriptions in WDFW PHS report p. 158 - see web link above).
— Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and
terrestrial ecosystems which mutually influence each other.
— Westside Prairies: Herbaceous, non -forested plant communities that can either take the form of a dry prairie or a wet
prairie (full descriptions i» WDFWPHSreportp. 161 -see web link above).
— Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide
functional life history requirements for instream fish and wildlife resources.
— Nearshore: Relatively undisturbed near:shore habitats. These include Coastal Nearshore, Open Coast Nearshore, and
Puget Soured Nearshore. 0111i descriptions of habitats and the definition of relatively undisturbed are in WDFW report -
See web link on previous pgge),
— Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock,
ice, or other geological formations and is large enough to contain a human.
— Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation.
— Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite,
and/or sedimentary rock, including riprap slides and mine tailings. Maybe associated with cliffs,
— Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to
enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 24 in (51 cm] in western
Washington and are > 6.5 ft (2 in) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, anel > 20 ft
(6 m) long,
Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed
elsewhere.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Fffective January 1, 2015 15
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