HomeMy WebLinkAboutWeland delineation 901112022CAa-I -W, C - AM 11 - oo 9 i 3
MEEHAN-ROULST WETLAND DELINEATING
�DJUL 0 6 2417
JEFFERSON COUNTY DCD
Kimberly Meehan-Roulst, Wetland Specialist
407 Embody Rd., Port Ludlow, WA 98365
Phone: 3 60-732-0073, Cell: 360-774-0551
Specializing In:
Wetland and Stream Mapping, Delineation and
Restoration
JEFFERSON COUNTY CRITICAL AREA INVESTIGATION:
"CATEGORY II WETLAND"
PARCEL NUMBER: 901 112 022
S 11, T29N, R1W
Client: Cynthia Wacker
Physical Address: 171 Nip Lee Rd, Chimacum WA 98325
Investigation Dates: 5/18/17-5/29/17
Investigator: Meehan-Roulst Wetland Consulting, Kimberly Roulst
1
TABLE OF CONTENTS
PAGE
PARCEL 901112022 SITE INFORMATION 3
EXISTING CONDITIONS 4
PROPOSED PROJECT 5
.1EFFERSON COUNTY UNIFIED DEVELOPMENT CODE: CRITICAL AREAS CODE
18.22 INVESTIGATED 5
EXISTING CONDITIONS OF A CATAGORY II WETLAND 5
HABITATS ON "ALL" PARCELS IN THE WETLAND 6
WETLAND DATA ON NORTHEAST PORTION OF PARCEL 901112022 6&7
UPLAND DATA ON NORTHEAST PORTION OF PARCEL 901112022 7
FIELD INVESTIGATION
I0&11
CONCLUSION: 14
EXHIBITS:
EXHIBIT 1: WETLAND VEGETATION ON PARCEL 7
EXHIBIT 2: UPLAND VEGETATION ON PARCEL 8
EXHIBIT 3: WETLAND ON PARCEL 9
EXHIBIT 4: WETLAND STATIONS AND LOCATION OF EXISTING HOME 12
TABLES:
TABLE 1: Wetland Rating Sheets Category II 13
TABLE 2: WETLAND CATEGORIES, RATING SCORES AND BUFFER WIDTHS 14
APPENDIX A: MAPS: Vicinity Map, Critical Areas Maps: FEMA and JCD Wetland
Map, Priority Habitat and Species Map with Species List
APPENDIX B: FIELD DATA SHEET 1, oil,
APPENDIX C: WETLAND RATING SHEETS with MAPS AND FIGURES
APPENDIX D: APPROACH AND METHODS
2
PARCEL_ 901112022 SITE INFORMATION
CONSULTING COMPANY:
Meehan-Roulst Wetland Consulting
TYPE OF CRITICAL AREA BEING INVESTIGATED:
Soils ❑
Wetlands
Aquatic & Wildlife Conservation area
LAND OWNER CYNTHIA WACKER
PROPOSED PROJECT:
TAX PARCEL NUMBERS
SITE LOCATION:
LEGAL LOCATION:
CRITICAL AREAS LOCATION:
ROAD ROUTE INSTRUCTIONS:
USE CODE:
SIZE OF PARCEL:
WATERSHED:
171 Nip Lee Rd., Chimacum WA 98325
Relocation of Failed Septic.
Enhancing the existing 2 bedroom septic
To a 3 bedroom septic.
901112022
171 Nip Lee Rd, Chimacum WA 98325
Section 11, Township 29 North, Range 1 W
Jefferson County, Washington
A Category II Wetland is located on the
northeast portion of the 3.3 acre lot
From Jefferson County Permit Center, head
south on Sheridan St. towards W Sims
Way/WA-20. Stay straight onto WA -19
into Chimacum. Turn Left onto Nip Lee
Road. Parcel 901112022 is at the end of Nip
Lee Road on the left. Wetland is down over
the hill passed the mobile home/firecode
171.
1101 -Residential -MH W/Land
3.3 Acres
WRIA 17-Quilicene Snow, Chimicum
Creek Basin
TOPOGRAPHY: Parcel is level on the upper west side. Middle of parcel it drops
downhill to the east. 20% slope. Parcel then levels out with a
depression in the northeast corner.
C. EXISTING SITE CONDITIONS:
1. LANDSCAPE POSITION:
HILLSLOPES
®
TYPE.
❑
STREAM & RIVER
®
FLOODPLAINS
❑
BASINS
❑
LEVEL TERRACES
❑
DEPRESSIONS
®
MARINE TERRACE
❑
COASTAL DUNES
❑
ALL UV1AL FAN
❑
MARINE BL UFF
❑
VALLEYS
SWALES
❑
LANDSLIDE
LAKES & PONDS
❑
OTHER (EXPLAIN)
❑
TERRACE ESCARPMENT
❑
2. SLOPE GRADIENT: 20-25%
3. GEOLOGIC MATERIALS
ALLUVIAL
ASH
❑
COLL UVIAL
❑
GLACL4L DRIFT
❑
GLACIAL OUTWASH
❑
COMPACT TILL
❑
LACUSTRINE
❑
ORGANICS
EOLIAN
❑
RESIDUUM
❑
4. WATER TYPES PRESENT (Jefferson County Unified Development Code 18.22):
IRRIGATION DITCH ❑
STREAM, RIVER, POND OR LAKE
IRRIGATION DITCH ASSOCIATED WITH STREAM OR RIVER ❑
STREAM, RIVER, POND, LAKE OR NAME: Chimacum Creek
N/A ❑
TYPES WATER ❑ TYPE NP WATER ❑
TYPE F WATER z TYPE NS WATER ❑
WATER TYPE LOCATED ON PROPERTY REGULATED BY JEFFERSON
COUNTY
Yes ❑ No ® *Chimacum Creek is 891 ' away from project area
4
PROPOSED PROJECT:
1, Meehan-Roulst Wetland Consulting, was contacted by Cynthia Wacker to investigate for potential
wetlands to accommodate a septic permit. Septic Designer Suzanne Martin is designing a new
drainfield for the homeowner, Cynthia Walker, owner of parcel number 901112022. Parcel is 3.3
acres in size. The new drain field is not just a "System Repair". It is being enhanced from the
existing two bedroom system to a three bedroom system. As a result, a wetland delineation is
required by Jefferson County Community Development on the lower portion, north east corner, of her
parcel to determine if the new location of the septic is out of Critical Areas: Wetland Buffer. Only a
portion of the wetland is on the parcel. The new drain field will be constructed up hill (20-25%
slope) where the current residence/mobile home is. The wetland on her property is part of a larger
wetland system: Category II Wetland associated with Chimacum Creek.
Parcel 901112022 is physically located in Chimacum Washington. The wetland on the parcel is in a
valley bottom that is south of Ness' Corner Road near Jefferson County Library and is north of WA -
19 near CHS Propane (Cenex). West of the wetland is WA- I9/Rhody Drive and east of the wetland
is Chimacum Road near Jefferson County Jail. Please refer to Appendix A "Vicinity Map" for
location of parcel.
JEFFERSON COUNTY UNIFIED DEVELOPMENT CODE: CRITICAL AREAS CODE:
18.22 INVESTIGATED:
• Category II Wetland: Only a portion is on the subject parcel, parcel 901112022.
New septic area is 200.5' at its closes perk hole from wetland boundary.
• Fish and Wildlife Habitat Conservation Area (FWHCA) "Chimacum Creek":
Chimacum Creek is a "Type F" fish/salmon bearing stream. Protection buffer is
150' from stream. Chimacum Creek is 891' away from new septic area and 741'
from Jefferson County's Critical Area buffer of 150'. Code 18.22.270.
40 FEMA .Flood Maps: New septic area is 138' from the FEMA/Floodplain mapped
area as per Jefferson County Critical Areas Maps. See Appendix A for Jefferson
County Critical Area mapped floodplain and wetland boundary.
EXISTING CONDITIONS OF A CATAGORY II WETLAND:
The wetland is approximately 28 acres that has Chimacum Creek running in between the wetland area
to the east that flows from south to north. Chimacum Creek flows through the wetland then under
Ness' Corner Road, left of Jefferson County Library looking north. It then continues down slope into
Irondale. Runs below the bridge then turns east and exits at the mouth of Chimacum Creek. It
empties into Admiralty Inlet, Marine area 9, to the Puget Sound. The mouth to Chimacum Creek is
just south of Kala Point. It is a "salmon bearing stream". "North Olympic Salmon Coalition" finding
this year predict the Chum Salmon will have a return of 1465 salmon.
The wetland has residential development on the west side and industrial use from Cotton Ready Mix
on the east side. Wetland is on both sides of Chimacum Creek. For any stream, less than fifty feet
wide with vegetated wetlands on both sides of a stream, the wetland must be rated as "One Wetland"
as per Washington States Wetland Rating System. I, Meehan-Roulst Wetland Consulting, has
produced a map of the whole wetland boundary. Not just the portion on the parcel 901112022.
Approximate wetland area on parcel 901112022 is 6,000 sq. ft. The Jefferson County Critical Areas
Map has mapped the wetland much larger and more continuous then it is on the ground/field
investigation. Wetland breaks north and south due to deeper stream channeling. I used my personal
knowledge of the stream. I have walked it from Chimacum School down to where the stream culverts
under Ness' Corner Road during the year 2000. During my years with Western Washington Huxley
Environmental Science Program, that part of the stream was monitored for habitat as part of a course
for River and Streams and monitored for returning Coho, stream velocity, or lack of, bank full width,
substrate/gravel, temperature, turbidity and dissolved oxygen levels. I also used local home owners
to access it at the end of Hilda Street (north of Nip Lee Road) and walked in at Lopeman Street,
behind Cotton Ready Mix. The wetland is still fairly pristine. Unlike other areas of Chimacum
Valley, the area is still not choked out (less than 25%) from the invasive "Reed Canary Grass". Using
local knowledge, Google Earth Imagery, Jefferson County Critical Areas Maps and National Wetland
Inventory Maps I was able to address the questions in the Washington State Wetland Rating Sheets
for not just the portion I could see from the parcel being investigated but the whole wetland in its
entirety. Also reviewed Jefferson County's Community's Development permit data base. In 2008,
Dixie Luellen, owner/biologist of Olympic Wetland Resources, classified the parcel #901112052, just
north of parcel 901111202, as a Category II Wetland. My findings were the same taking the whole
wetland into consideration. Rating Sheets can be viewed in Appendix C.
Wetland received a total of 20 points, Class II, because of it's location. Wetland rated High for
Improving Water Quality do to being associated with Chimacum Creek but low for Habitat due to
development in most of the buffer from Cotton Ready Mix, high traffic commercial farm and
residential development on an acre or less.
HABITATS ON "ALL"" PARCELS IN THE WETLAND:
• U.S.F.W. National Wetland Mapper shows the wetland as "PEM I/SSC" Palustrine emergent
persistent/shrub scrub seasonally flooded. Wetland has both HGM classes and areas in the
field revealed that are also a few small pockets, 15' in diameter, of permanently inundated
areas that are dominated by Cattail.
• Wetland is still dominated by native species: Willow species, cattail, meadow horsetail, tall
buttercup, slough sedge, rush and many wetland grasses.
• Wetland has a high score for "Landscape Potential" and "Value" in respects to Chimacum
Creek but lacks points for "Habitat". The buffer to the wetland, or next to buffer, is
developed for residential use or industrial use by Cotton Ready Mix. Unlike other areas of
Chimacum Valley, there is no animal grazing in buffer. Areas in and next to buffer are
mowed for hay and high traffic do to commercial farming.
■ Wetland is on both sides of Chimacum Creek that is a fish bearing stream that contains the
Federally Listed Chum Salmon, summer and fall runs, and Coho Salmon. Priority Habitat
and Species maps also list the Pink Salmon, Resident Cutthroat Trout and Cutthroat
occurrences. See Appendix A for list of Priority Species.
• Jefferson County Soil Survey lists four soils in the wetland: Tisch silt loam, Semiahmoo
Muck, Mukilteo Peat and Wapato Silt Loams. All are on Jefferson County Hydric Soils List.
C
WETLAND DATA ON NORTHEAST PORTION OF PARCEL 9011.12022:
Parcel 901112022 has only a portion of the wetland on the northeast corner. It is at the fringe of a
Category 11 Wetland that extends from the end of Nip Lee Road and/or Hilda Street across
Chimacum Creek to Cotton Ready Mix. Field Data Sheets can be viewed in Appendix B.
Vegetation: Wetland on parcel is dominated by meadow horsetail (FAC), western buttercup
(FACW) All FAC or wetter vegetation accommodated to life in wetlands. It does not pond on the
parcel. Saturated only during the wet/growing season.
Soils: Soils are that of the mapped soil unit "Tisch silt loam". Wetland Plot was 10YR2/1 silt loams
in the upper 7 inches with 10YR5/2 silt loams at 7 inches down to 13 inches with 7.5YR5/6 mottling.
lij,droloy: Hydrology parameter was met with saturated soils at the ten -inch mark. It was also met
by the redoximorphic features at the eight inches from the soil surface.
UPLAND DATA, ON NORTHEAST PORTION OF PARCEL 901112022:
Ve atfin: Upland plot was dominated by wild cherry (FACU), common snowberry (FACU) and
trailing blackberry. At the time of the site visit, reed canary grass (FACW) was not yet mature at the
sample plot and was not considered dominant.
Upland buffer vegetation around the wetland boundary was wild cherry trees (FACU) and douglas fir
(FACU) trees, indian plum (FACU) and common snowberry (FACU) shrubs with mowed level lawn
and a fenced in horse arena that was gravel with weeds.
Soils: Upland soils were gravelly sandy loam. The upper 7 inches was 10YR3/2 very gravelly sandy
loam. Seven inches to twelve inches was 10YR5/2 very gravelly sands. There were bright 7.5YR5/8
coatings on ten percent of the rock surfaces that was easily rubbed off (relic iron stains). They were
not redoximorphic features.
Hydrology: No hydrology in the upland plot or indicators of hydrology in the soils
7
EXHIBIT 1
WETLAND VEGETATION ON PARCEL
Field Horsetail, Western Buttercup and areas of Reed Canary Grass
if
8
kk
if
8
EXHIBIT 2
UPLAND VEGETATION ON PARCEL
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1 w._
i _ .,4 Vii, _ ww3 �� r .e�C4`�,i "�.� .� i.'� ♦' ir`-a�y� -�".
r £� � awes z+c � `.s it 'l:`iC'� ♦ * "T. • Xf�l ti _ ' "'�+4f ` t..
9
EXHIBIT 3
WETLAND ON PARCEL
PARCEL 901112022
*Blue line is wetland boundary
FIELD 1NV "STIGATION:
Field investigation was conducted on 5/18/17. Temperature was 62 degrees and partly cloudy skies.
Two levels of information were gathered:
1. Level I Assessment consisting of reviewing existing information to develop background
knowledge of physical features, and to identify the potential for wetland and other water occurrences
on the subject parcel. The resource documents available for the Level I preliminary assessment
included: USDA Soil Conservation Service (SCS), "Soil Survey of Jefferson County Aerial
photography of the area on file with Jefferson County Department of Community Development
(JCDCD), JCDCD Critical Areas data base. JCDCD Permit data base for wetlands delineated around
subject parcel. Wetland Rating Sheets can be viewed in Appendix C. See Appendix A "Maps" for
Jefferson County Critical Areas Maps. Maps show that the project location is 138' from the mapped
FEMA Floodplain and 891" from Fish and Wildlife Conservation Area, waters of the state, of the
fish bearing stream "Chimacum Creek".
2. Level III Assessment consisting of on-site investigation was conducted to determine the wetland
area to collect quantitative data of Hydrophytic Vegetation, Hydric Soils, and Wetland Hydrology
and to delineate and classify the wetland, as recommended in accordance with the 1987 Corps of
10
Engineers Wetlands Delineation Manual and the Regional Supplement to the Wetland Delineation
1987 Manual for Western Mountains, Valleys, and Coast Region.
U.S. Army Corps of Engineers, ERDC/EL TR -08-13, April 2008 and the Washington State wetland
rating system for western Washington Update 2014, Publication #14-06-29,Washington State
Department of Ecology.
The wetland boundary delineation was finalized once the sample plots were complete. Wet Plot and
Upland Plot are located on both sides of Station 3. Only 8 wetland boundary stations were placed
on the parcel, 20-25' apart on the delineated boundary between uplands and wetland. Due to the
lack of rain on the investigation date, soil moisture in the soil met the "Hydrology" parameter along
with mottling in a reduced matrix was the wetland. Vegetation was dominated by meadow horsetail
and western buttercup and areas of reed canary grass that extended beyond the wetland boundary.
Wetland boundary was established by auguring with a 1.25 inch diameter auger every twenty feet
determined the boundary between upland and wetland once the soil parameter for Hydric Soils
could not be met. Boundary is marked with orange whips stating "M-R.W.C., Station number,
Wetland Boundary, 5/18/17". Orange ribbon was hung above each station where vegetation was
taller than the whips.
110' buffers were placed in the field stating "Wetland and 110' Buffer. Do not Remove or Alter
Existing Native Vegetation". Orange ribbon was placed on the laths for better visibility. 110'
wetland buffers were placed in the field off of station 3 and station 4. Station 3 was the closest to
the proposed new septic area. Another measurement was made from the buffer lath to the closest
perk hole. The closest perk hole was 90.5 feet from the 110' wetland buffer meaning 200.5 feet
from the wetland boundary.
11
EXHIBIT 4
WETLAND STATIONS AND LOCATION OF EXISTING HOME
WETLAND STATION LOCATIONS. RED LINES ARE 150' FROM WETLAND BOUNDARY
Location of existing Mobile home and area
of the new septic
Location of Wetland Stations 1-8
Location of Station 3. Up Plot is
Just SW of it and Wet Plot is NE it
12
Total
Wetland Area
Name Delineated
On Parcel Appr. 6000
sq. ft.
Off Parcel (Parcel is 3.3
TABLE 1
WETLAND RATING SHEETS
CATEGORY II WETLAND
Function
Vetland
1.Site
xtend
Potential
ff of
POSTION &
arcel
2. Landscape
/N
Potential
3. Value
Y I
Score
Wetland Ratings Function
Scores
Improve Hydrologic Habitat
Hz0
Quality
M M M
H H L
H I L I H
8 6 6-1
SCORE
WETLAND
LANDSCAPE
BASED
CATAGORY
POSTION &
ON
COWARDIN
RATING
CLASSIFICATION
Depressional
PEM1/SSC
Moderate Impact Land Use: CATAGORYll Wetland requires 110 foot wide buffer with
total function 20-22 points with habitat score 5-7 as per JCC Table 18.22.330(2)
13
TABLE 2
Table 18.22.330(2)
WETLAND CATEGORIES, RATING SCORES AND BUFFER WIDTHS
FOR MODERATE IMPACT LAND USES
Moderate impact land uses shall include the following:
• Single-family residential use on parcels of one acre or larger;
• Private roads or driveways serving three or more residential parcels;
• Paved trails;
• Passive recreation areas;
• Utility corridors (private or public) with a maintenance road;
• Class IV -General forest conversions, including conversion option harvest plans.
Wetland Category
II
(Total of scores for all functions is 20 — 22 points
or having "special characteristics" identified in the
rating form)
+ An
Additional
Distance from
an Apparent
Wetland
Boundary
(Not
naiinantaril
+40 feet
14
Buffer Width
with an
Wetland Characteristics:
Identified
• Habitat (H)
Wetland
• Water Quality (WQ)
Boundary
(Delineated)
[WQ score 8 — 9 points and H
75 feet
score less than 5 points]
[H score 8 — 9 points]
225 feet
[H score 5 — 7 points]
110 feet
[Estuarine]
110 feet
[Interdunal]
110 feet
[Not meeting above
75 feet
characteristicsl
+ An
Additional
Distance from
an Apparent
Wetland
Boundary
(Not
naiinantaril
+40 feet
14
CONCLUSTION:
After investigating Jefferson County Critical Areas: FEMA Floodplains, Fish and Wildlife Habitat
Conservation Areas and Wetlands, the proposed area for the new septic area on parcel 901112022 is
outside ALL Jefferson County Critical Area Buffers.
This not a final determination. Jefferson County Community Development will have the final
approval of this wetland investigation report and determination of the category of wetland.
15
APPENDICE A
"MAPS"
Fig 1: Vicinity Map
Fig 2: Jefferson County Floodplain Map
Fig 3: Priority Habitat and Species Map
Fig 3A: List of Species
Fig 4: Watershed Map
FIG 1
VICINITY MAP
RED IS PARCEL # 901112022
.........................
. . ...........•..........•..-
. . . . ............ .
mil�
Ll
Ft,6,a 3R
Location Clicked in LatLong: -122.77467,48.02275
Common Name Scientific Priority Area Display Feature Full
Name Resolution Type Record
r r
Freshwater Emergent Null Aquatic Habitat AS MAPPED Area Show Full
Wetland(show)Record
Common Name
F F
Summer
Chum show
Dismiss
Location Clicked in LatLong: -122.77233,48.02365
Scientific Priority Area Display Feature Full
Name Resolution Type Record
Oncorhynchus Occurrence/Migration AS MAPPED Line
keta
Fall Chum show Oncorhynchus Occurrence/Migration AS MAPPED Line
keta
Pink Salmon Odd Oncorhynchus Occurrence/Migration AS MAPPED Line
Year show gorbuscha
Resident Coastal
Cutthroat show
Cutthroat show
Coho show
Coho show
Oncorhynchus Occurrence/Migration AS MAPPED Line
clarki
Oncorhynchus Occurrence
clarki
Oncorhynchus Occurrence
kisutch
Oncorhynchus Breeding Area
kisutch
Dismiss
AS MAPPED Line
AS MAPPED Line
AS MAPPED Line
Show
Full k y A
Record '�'"�
Shaw
Full
Record
Show `
Full
Record
Show
Full J1
Record
Show Full
Record V
Show Full
Record
Show Full
Record'
Chimacum Creek Clean Water Projee 0700093 Final Report June, 2011
a c w vor s •"rr It. -Ii % k k k w t V %-C-
Jefferson County Public Health �+ �► f�1 + �� Page 3
APPENDICE B
"Field Data Sheets"
With
Map station locations and location of up plot and wet plot
WETLAND STATION LOCATIONS. RED FINES ARE 150' FROM WETLAND BOUNDARY
Location of existing Mobile Moine and area
of the new septic
[Eoe:a:tio:nof Wetland Stations 1-8
Location of Station 3. Up Plot is
Just SW of it and Wet Plot is NE it
WETLAND DETERMINATION DATA FORM —Western Mountains, Valleys and Coast Regions
Project/Site: Parcel # 901112022
Absolute
% Cover
City/County: Jefferson County,
WA
Sampling Date: 5/18/17
,Applicant/Owner: : Cynthia Wacker
(A) 0
(B) 3
State: WA
Sampling Point: Upland Plot
Investigator(s): Meehan-Roulst Wetland Consulting/Kim
Meehan-Roulst
Section, Township, Range: S11, T29N, Rl W
Landform hillslo e, terrace, etc): Flat
4.
_
Local relief (concave, convex, none): Concave Slo e (%) 0-2%
Subregion (LBR). North West Forest
Lat: 48de
01'23.26"N Long: 122de 46'30.28"W1 Datum. NAD 83
Soil Map Unit Name: Tisch silty loam
5.
I NWl classification:
Are climatic / hydrologic conditions on the site
typical for this time of ear? Yes No If no explain in Remarks.
Are vegetation ❑, Soil ❑ or Hydrology
significantly disturbed?
Are "Normal Circumstances" resent? Yes 0 No LJ
Are vegetation ❑, Soil ❑, or Hydrology
naturally problematic?
If needed, explain my answers in Remarks)
SUMMARY OF FINDINGS—Attach site map showing sampling_laint locations, transects, important features, etc
Hydrophytic Vegetation Present? Yes ❑ No ® Is the Sampled Area
I•lydric Soil Present? Yes ❑ No [D Within a Wetland? Yes ❑ No
Wetland 1-1 drolo Present? Yes No
Remarks:
VEGETATION — Use scientific names of plants
'frees Stratum Plot size:)
Absolute
% Cover
Dominant
S ecies?
Indicator
Status
Dominance Test worksheet:
Number of Dominant Species That
Are OBL, FACW, or FAC:
Total; Number of dominant
Species Across All Strata:
(A) 0
(B) 3
1.
2.
3.
4.
Percent of Dominant Species
That Are OBL, FCW, or FAC:
(AB) 0
5.
=
Total Cover
Prevalence Index worksheet:
Total %Cover of: Multiply by:
Saplina/Shrub Stratum (Plot size)
1.Prunus emarginata
25
Yes
FACU
OBL species
X 1 =
2.Symphoricarpos albus
25
Yes
FACU
FACW species
1
X 2 =2
3. Rosa nutkana
10
No
FAC
FAC species
1
X 3 =3
4.
FACU species
3
X 4 =12
5.
UPL Species
X5=
4.
Column totals
4(A)
17(B)
5..
Prevalence index = B/A =4.2
=Total
Cover
60
Hydrophytic Vegetation Indicators:
[:11. Rapid Test for Hydrophytic Vegetation
❑ 2.Dominance Test is >50%
❑ 3. Prevalence Index is <3.0'
❑ 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.
Hydrophytic
Vegetation
Present? Yes ElNo
Herb Stratum (Plot size:) 1Mx1M
1. Rubus ursinus
20
Yes
FACU
2. Phalaris arundinacea
10
No
FACW
3
4•
5
6.
7.
8.
9.
=Total Cover
30
Woody Vine Stratum Plot size:
1. N/A
2,
=Total Cover
% Bare Ground in Herb Stratum
10
Remarks:
US Army Corps of Engineers Western Mountains, Valleys and Coast — Version 2.0
SOIL
Samnlino Point Dry
Profile Description: (Describe t o the depth needed to document the indicators or confirm the absence of indicators)
Depth
(inches)
Matrix
Redox Features
SecondaIX Indicators 2 or more required)
Textures
❑ Water -Stained Leaves (139) (except
Remarks
Color (moist)
%
Color (moist)
%
Typel
Loc2
0-7"
10YR3/2
100
Sediment Deposits (132)
❑ Hydrogen Sulfide Odor (C1)
❑ Saturation Visible on Aerial Imagery
❑ Drift Deposits (133)
GRSL
(C9)
Very dark grayish brown, gravelly sandy loam,
weak angular blocky structure, many common
and course roots, smooth boundary
7-12"
10YR5/2
90
❑ Recent Iron Reduction in tilled Soils (C6)
❑ Shallow Aquitard (D3)
❑ Surface Soil Cracks (136)
❑ Stunted or Stressed Plants (DF) (LRR A)
9B
® Inundation Visible on Aerial Imagery (137)
Grayish brown, very gravelly sands, 35%
medium, bright 7.5YR5/8 coatings on 10% of
avel. Not RDF's.
❑ Raised Ant Mounds (D6) (LRR A)
❑ Sparsely Vegetated concave Surface (138)
❑ Frost -Heave Hummocks (D7)
Field Observations
Surface Water Present? Yes ❑ No
® Depth (inches):
Water Table Present? Yes ❑ No
® Depth (inches): 10
Saturation Present? Yes ❑ No ® Depth (inches): 10
Wetland Hydrology Present? Yes ❑ No
(includes capillaty fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
'Type: C=Concentrations, D=Depletion.
RM=Reduced Matrix. CXS=Covered or Coated Sand Grains.
'Location:
PI=Pore lining, RC=Root Channel, M=Matrix
Hydric Soil Indicators: (Applicable
to all LRRs,
unless otherwise noted.)
Indicators for Problematic Hydric Soils 3:
❑ 2 em Muck (A10)
❑ Red Parent Material (TF2)
❑ Other (Explain in Remarks s
3Indicators of hydrophytic vegetation and
wetland hydrology must be present, unless
disturbed or problematic.
❑ Histosol (Al)
❑ Histic Epipedon (A2)
❑ Black Histic (A3)
❑ Hydrogen Sulfide (A4)
❑ Depleted Below Dark Surface (Al 1)
❑ Thick Dark Surface (Al2)
❑ Sandy Mucky Mineral (S 1)
❑Sandy Gleyed Matrix (S4)
❑ Sandy Redox (SS)
❑ Stripped Matrix (S6)
❑ Loamy Mucky Mineral (F1) (except MLRA 1)
❑ Loamy Gleyed Matrix (172)
❑ Depleted Matrix (173)
❑ Redox Dark Surface (F6)
❑ Depleted Dark Surface (177)
❑ Redox Depressions (178)
Restrictive Layer (if present):
Type: Compact
Depth (inches): 7"
Hydric Soil Present? Yes ❑ No
Remarks:
HYDROLOGY
Wetland #1drology Indicators
Primary Indicators minimum of one required; check all that applyj
SecondaIX Indicators 2 or more required)
[] Surface Water (A1)
❑ Water -Stained Leaves (139) (except
Water Stained Leaves (B9) (MRLA 1, 2,
❑ High Water Table (A2)
MLRA 1, 2,4A, and 4B)
4A and 4B)
❑ Saturation (A3)
❑ Salt Crust (B11)
❑ Drainage Patterns (B10)
❑ Water Marks (B 1)
❑ Aquatic Invertebrates (1313)
❑ Dry -Season Water Table (C2)
Sediment Deposits (132)
❑ Hydrogen Sulfide Odor (C1)
❑ Saturation Visible on Aerial Imagery
❑ Drift Deposits (133)
❑ Oxidized Rhizospheres along Living Roots (0)
(C9)
Algal Mat or Crust (134)
❑ Presence of Reduced Iron (C4)
❑ Geomorphic Position (D2)
❑ Iron Deposits (135)
❑ Recent Iron Reduction in tilled Soils (C6)
❑ Shallow Aquitard (D3)
❑ Surface Soil Cracks (136)
❑ Stunted or Stressed Plants (DF) (LRR A)
❑ FAC=Neutral Test (D5)
® Inundation Visible on Aerial Imagery (137)
❑ Other (Explain in remarks)
❑ Raised Ant Mounds (D6) (LRR A)
❑ Sparsely Vegetated concave Surface (138)
❑ Frost -Heave Hummocks (D7)
Field Observations
Surface Water Present? Yes ❑ No
® Depth (inches):
Water Table Present? Yes ❑ No
® Depth (inches): 10
Saturation Present? Yes ❑ No ® Depth (inches): 10
Wetland Hydrology Present? Yes ❑ No
(includes capillaty fringe)
Describe Recorded Data (stream 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 Regions
Project/Site: Parcel # 901112022
City/County: Jefferson County,
WA
Sampling Date: 5/18/17
Applicant/Owner: : Cynthia Wacker
State: WA
Sampling Point: Wetland Plot
Investigator(s): Meehan-Roulst Wetland Consulting/Kim Meehan-Roulst
Section, Township, Range-, S11, T29N, R1W
Landform hillslo e, terrace, etc): Flati
Local relief (concave, convex, none): Concave Sloe %) 0-2%
Subregion (LRR): North West Forest J Lat: 48ft
01'23.26"N Long: 122de 46'30.28"W Datum: NAD 83
Soil Map Unit Name: Tisch silt loam
I NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of ear? Yes Z No ❑ (If no, ex lain in Remarks.)
Are vc etation , Soil ❑, or llydrol2& 0 si ificanti disturbed?
Are "Normal Circumstances" resent? Yes 0 No
Are ve elation ❑, Soil ❑, or Hydrology ❑ naturally problematic?
If needed, explain any answers in Remarks
SUMMARY OF FINDINGS— Attach site man showine samnline point locations. transerts. imnnrtAnt features. atr
Hydrophytic Vegetation Present? Yes S No ❑
Is the Sampled Area
hlydric Soil Present? Yes ® No ❑
Within a Wetland? Yes ® No ❑
Wetland Hydrology Present? Yes Z No
1.
Remarks:
VEGETA711ON --- Use scientific names of plants
Trees Stratum Plot size: 1
Absolute Dominant
% Cover Species?
Indicator
Status
Dominance Test worksheet:
Number of Dominant Species That
Are OBL, FACW, or FAC:
Total; Number of dominant
Species Across All Strata:
(A) 2
1.
2.
(B) 2
3.
4.
Percent of Dominant Species
That Are OBL, FCW, or FAC:
(AB)
100%
5.
= Total Cover
Prevalence Index worksheet:
Total % Cover of Multiply by:
5altilin fg Shrub Stratum (Plot size)
1 •
OBL species
X 1 =
2.
FACW species
X2=
3•
FAC species
X3=
4.
FACU species
X4=
5.
UPL Species
X 5 =
4.
Column totals
(A)
(B)
5..
Prevalence index = B/A =
=Total Cover
Hydrophytic Vegetation Indicators:
❑ 1. Rapid Test for Hydrophytic Vegetation
®2.Dominance Testis >50%
❑ 3. Prevalence Index is 53.0'
❑ 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.
Hydrophytic
Vegetation
Present? Yes ® No ❑
Herb Stratum Plot size: 1 Mx1M
1. Equisetum arvence
55 Yes
FAC
2. Ranunculus occidentalis
30 Yes
FACW
3. Alopecurus pratensis
15 No
FAC
4.
5
6.
T
8'
9.
=Total Cover
100
Wood Vine Stratum Plot size:
1. N/A
2,
=Total Cover
0
% Bare Ground in Herb Stratum
Remarks:
US Army Corps of Engineers Western Mountains, Valleys and Coast — Version 2.0
SOIL
S:i111A7f11141 Pnint• Wat
Profile Description: (Describe t o the depth needed to document the indicators or confirm the absence of indicators)
Depth
(inches)
Matrix
Redox Features
Secondary Indicators 2 or more required)
Textures
❑ Water -Stained Leaves (139) (except
Remarks
Color (moist)
%
Color (moist)
%
Typel
Loc'
0-711
10YR2/1
100
❑ Sediment Deposits (132)
❑ Hydrogen Sulfide Odor (C1)
❑ Saturation Visible on Aerial Imagery
❑ Drift Deposits (133)
SIL
(C9)
Black, silt loam, weak angular blocky structure,
slightly plastic, many fine and few coarse roots,
smooth boundLry
7-13"
10YR5/2
80
7.5YR5/6
20
C
M
SIL
❑ Inundation Visible on Aerial Imagery (137)
Grayish brown, silt loam, weak platy structure,
20% RDF, no roots
❑ Raised Ant Mounds (D6) (LRR A)
❑ Sparsely Vegetated concave Surface (138)
❑ Frost -Heave Hummocks (D7)
Field Observations
Surface Water Present? Yes ❑ No
® Depth (inches):
Water Table Present? Yes ® No
❑ Depth (inches): 10
Saturation Present? Yes ® No ❑ Depth (inches): 10
Wetland Hydrology Present? Yes ® No ❑
(includes cMillwy fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
'Type: C=Concentrations, D=Depletion. RM=Reduced Matrix. CXS=Covered or Coated Sand Grains.
'Location:
PI=Pore lining, RC=Root Channel, M=Matrix
Hydric Soil Indicators: (Applicable
to all LRRs,
unless otherwise noted.)
Indicators for Problematic Hydric Soils3°
❑ 2 cm Muck (A10)
❑ Red Parent Material (TF2)
❑ Other (Explain in Remarks 3
3Indicators of hydrophytic vegetation and
wetland hydrology must be present, unless
disturbed or problematic.
Histosol (A1)
❑ Histic Epipedon (A2)
❑ Black Histic (A3)
❑ Hydrogen Sulfide (A4)
® Depleted Below Dark Surface (Al 1)
❑ Thick Dark Surface (Al2)
❑ Sandy Mucky Mineral (S 1)
❑Sandy Gleyed Matrix -(S4)
❑ Sandy Redox (SS)
❑ Stripped Matrix (S6)
❑ Loamy Mucky Mineral (F1) (except MLRA 1)
❑ Loamy Gleyed Matrix (F2)
❑ Depleted Matrix (173)
❑ Redox Dark Surface (F6)
❑ Depleted Dark Surface (F7)
❑ Redox Depressions (178)
Restrictive Layer (if present):
Type: Compact
Depth (inches): 14"
Hydric Soil Present? Yes ® No ❑
Remarks:
HYDROLOGY
Wetland Hydrology Indicators
Primary Indicators (minimum of one required, check all that a 1
Secondary Indicators 2 or more required)
❑ Surface Water (A])
❑ Water -Stained Leaves (139) (except
Water Stained Leaves (139) (MRLA 1, 2,
❑ High Water Table (A2)
MLRA 1, 2,4A, and 4B)
4A and 4B)
® Saturation (A3)
❑ Salt Crust (B11)
❑ Drainage Patterns (B10)
❑ Water Marks (B1)
❑ Aquatic Invertebrates (1313)
❑ Dry -Season Water Table (C2)
❑ Sediment Deposits (132)
❑ Hydrogen Sulfide Odor (C1)
❑ Saturation Visible on Aerial Imagery
❑ Drift Deposits (133)
❑ Oxidized Rhizospheres along Living Roots (0)
(C9)
❑ Algal Mat or Crust (134)
N Presence of Reduced Iron (C4)
❑ Geomorphic Position (D2)
(] Iron Deposits (135)
C] Recent Iron Reduction in tilled Soils (C6)
❑ Shallow Aquitard (D3)
❑ Surface Soil Cracks (136)
❑ Stunted or Stressed Plants (DF) (LRR A)
❑ FAC=Neutral Test (D5)
❑ Inundation Visible on Aerial Imagery (137)
❑ Other (Explain in remarks)
❑ Raised Ant Mounds (D6) (LRR A)
❑ Sparsely Vegetated concave Surface (138)
❑ Frost -Heave Hummocks (D7)
Field Observations
Surface Water Present? Yes ❑ No
® Depth (inches):
Water Table Present? Yes ® No
❑ Depth (inches): 10
Saturation Present? Yes ® No ❑ Depth (inches): 10
Wetland Hydrology Present? Yes ® No ❑
(includes cMillwy fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
U5 Army Corps of Engineers Western Mountains, Valleys and Coast — Version 2.0
APPENDICE C
Wetland Rating Sheets
With
Maps and Figures
Wetland name or number " 4 ) � vwao�a
RATING SUMMARY —Western Washington
Name of wetland (or ID #):Rig" d rum Date of site visit:~`
Rated by , , - � Trained by Ecology?` Yes __,/No Date of traininozl
HGM Class used for rating fl)�,)Ar4 Wetland has multiple HGM classes?Z N
NOTE: Form is not complete without he figures requested (figures can be combined).
Source of base aerial photo/map � , '
OVERALL WETLAND CATEGORY (based on functions_ or special characteristics_)
1. Category of wetland based on FUNCTIONS
Category I —Total score = 23 - 27
Category II —Total score =20-22
Category III — Total score = 16 -19
Category IV — Total score = 9 - 15
FUNCTION
Improving
WaterQuality
Hydrologic
Habitat
Wetland of High Conservation Value
Circle the appropriate ratings
Bog
Site Potential
HL
H L
H M L
I
Landscape Potential
l.H) M L
H M L
H M
None of the above
Value
H M L
H M �LF'
H M L
TOTAL
Score Based on
Ratings
r
2. Category based on SPECIAL CHARACTERISTICS of wetland
CHARACTERISTIC
CATEGORY
Estuarine
I II
Wetland of High Conservation Value
I
Bog
I
Mature Forest
I
Old Growth Forest
I
Coastal Lagoon
I II
Interdunal
I II III IV
None of the above
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
Score for each
function based
on three
ratings
(order of ratings
is not
important)
9 = H,H,H
8 = H,H,M
7 = H,H,L
7 = H, M, M
6 = H,M,L
6 = M,M,M
5 = H,L,L
5 = M,M,L
4 = M,L,L
3 = L,L,L
Wetland name or number
Maps and figures required to answer questions correctly for
Western Washington
aepressional Wetlands
Map of:
To answer questions: Figure #
Cowardin plant classes
D 1.3, H 1.1, H 1.4
Hydroperiods
D 1.4, H 1.2
_
Location of outlet (can be added to map of hydroperiods)
D 1.1, D 4.1
Boundary of area within 150 ft of the wetland (can be added to-anotherfigure)
D 2.2, D 5.2
Map of the contributing basin
D 4.3, D 5.3 , -
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2. 1, H 2.2, H 2.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
D 3.1, D 3.2
Screen capture pf list of TMDLs for WRIA in which unit is found (from .web)
D 3.3
Riverine Wetlands
Map of: To answer questions:
Figure #
Cowardin plant classes H 1.1, H 1.4
L 1.1, L 4.1, H 1.1, H 1.4
_
Hydroperiods H 1.2
L 1.2
Ponded depressions R 1.1
L 2.2
Boundary of area within 150 ft of the wetland (can be added to anotherfigure). R 2.4
H 2.1, H 2.2, H 2.3
Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2
Width of unit vs. width of stream (can be added to another figure) R 4.1
L 3.3
Map of the contributing basin R 2.2, R 2.3, R 5.2
Boundary of 150 ft buffer (can be added to another figure)
1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2. 1, H 2.2, H 2.3
polygons for accessible habitat and undisturbed habitat
Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1
H 2. 1, H 2.2, H 2.3
Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
Lake Fringe Wetlands
Map of:
To answer questions: Figure #
Cowardin plant classes
L 1.1, L 4.1, H 1.1, H 1.4
Plant cover of trees, shrubs, and herbaceous plants
L 1.2
Boundary of area within 150 ft of the wetland (can be added to anotherfigure)
L 2.2
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2.1, H 2.2, H 2.3
Screen capture of map of 103(d) listed waters in basin (from Ecology website)
Screen capture of list of TNIDLs for WRIA in which unit is found (from web)
L 3.3
Slol2e'Wetlands
Map of:
To answer questions:
Figure #
Cowardin plant classes
H 1.1, H 1.4
Hydroperiods
H 1.2
Plant cover of dense trees, shrubs, and herbaceous plants
S 1.3
Plant cover of dense, rigid trees, shrubs, and herbaceous plants
(can be added to figure above)
S4.1
Boundary of 150 ft buffer (can be added to another figure)
S 2.1, S 5.1
1 km Polygon: Area that extends 1 km from entire wetland edge - including
polygons for accessible habitat and undisturbed habitat
H 2. 1, H 2.2, H 2.3
Screen capture of map of 303(d) listed waters in basin (from Ecology website)
S 3.1, S 3.2
Screen capture of list of TMDLs for WRIA in which unit is found (from web)
S3.3
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
Wetland name or number
HGM Classification of Wetlands in Western Washington
For questions 1-7, the criteria described must 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 with 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?
61 NO - 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. If 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.
NO go to 3 YES -- The wetland class is Flats
Ifyour wetland can be classified as a Flats wetland, use the farm for Depressional wetlands.
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 any time 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).
NO - 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 very gradual),
—The water flows through the wetland in one direction (unidirectional) and usually comes from
seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks,
The water leaves the wetland without being impounded.
NO ,`go to S 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 hummocks (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 Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
Wetland name or number
NO - go to 6 YES - The wetland class is Riverine
NOTE: 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 sometime during the year? This means that any outlet, if present, is higher than the interior
of the wetland.
NO -go to 7 YES 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
41 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
WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT
AREAS IN THE UNIT (make 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 10% of the unit; classify the wetland using the class that represents more than 90x/0 of the
total area.
HGM classes within the wetland unit
being rated
HGM class to
use in rating
Slope + Riverine
Riverine
Slope + Depressional
Depressional
Slope + Lake Fringe
Lake Fririg
Depressional + Riverine along stream
within boundary of depression
' Depressional
Depressional + Lake Fringe I
Depressional
Riverine + Lake Fringe
Riverine
Salt Water Tidal Fringe and any other
class of freshwater wetland
Treat as
ESTUARINE
Ifyou are still unable to determine which of the above criteria apply to your wetland, or ifyou have
more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the
rating.
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
Wetland name or number
DEPRESSIONAL AND FLATS 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 wetland:
?
Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet),
points = 3
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet,._ .,
`°y
points = 2`'
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points`= 1
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1
D 1.2. The soil 2 in below the surface for duff laver) is true clay or true organic (use NRCS definitions) Yes = 4 '.No = 0
D 1.3. Characteristics and distribution of persistent Mants (Emergent, Scrub -shrub, and/or Forested Cowardin classes):
Wetland has persistent, ungrazed, plants > 95% of area points = 5'`.;
Wetland has persistent, ungrazed, plants > % of area points = 3
Wetland has persistent, ungrazed plants > 1/10 of area points = 1
Wetland has persistent, ungrazed plants <1/10 of area points = 0
D 1.4. Characteristics_of seasonal ponding or inpndation:
This is the area that is ponded for at least 2 months. See description in manual.
Area seasonally ponded is > % total area of wetland points = 4
Area seasonally ponded is > Y4 total area of wetland points = 2
Area seasonally ponded is < % total area of wetland points = 0 '}
Total for D 1 Add the points in the boxes above
Rating of Site Potential If score is: 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?
fNo = 0
D 2.1. Does the wetland unit receive stormwater discharges? Yes = 17
D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0
?
D 2.3. Are there septic systems within 250 ft of the wetiand? Yes = 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?
Source Yes = 1 No = 0
Total for D 2 Add the points in the boxes above
`°y
Rating of Landscape Potential If score is:v3 or 4 = H _1 or 2 = M �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? Y'es ='I No = 0
D 3.2. Is the wetland in a basin or sub -basin where an aquatic resource is on the 303(d) list? -` es =,i7% No = 0
D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES
r
if there is a TMDL for the basin in which the unit is found)?Yes = 2 iNo = 0
- --
Total for D 3 Add the points in the boxes above
Rating of Value If score is: .2-4 = H _1= M _0 = L
Wetland Rating System for Western WA: 2014 Update
Rating Form — Effective January 1, 2015
Record the rating on the first page
Wetland name or number
DEPRESSIONAL AND FLATS WETLANDS
Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation
D 4.0. Does the site have the potential to reduce flooding and erosion?
D 4.1. Characteristics of surface water outflows from the wetland:
Wetland is a depression or flat depression with no surface water leaving it (no outlet) points _=z.4
z.4 ..
-1,
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outle Dints - 1)
Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1
r -
Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0
D 4.2. Depth of store during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands
with no outlet, measure from the surface of permanent water or if dry, the deepest part.
Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7
Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5
Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet ?3
The wetland is a "headwater" wetland po nts zi
The
Wetland is flat but has small depressions on the surface that trap water points = 1
Marks of ponding less than 0.5 ft (6 in) points = 0
D 4.3. Contribution of the wetland to storae_in the watershed: Estimate the ratio of the area of upstream basin
contributing surface water to the wetland to the area of the wetland unit itself.
The area of the basin is less than 10 times the area of the unitDints == 5
The area of the basin is 10 to 100 times the area of the unit points = 3
The area of the basin is more than 100 times the area of the unit points == 0
Entire wetland is in the Flats class points = 5
Total for D 4 Add the points in the boxes above
Rating of Site Potential If score is: 12-16 = H6-11= M �0-5 = L Record the rating on the first page
D 5.0. Does the landscape have the potential to support hydrologic functions of the site?
D 5.1. Does the wetland receive stormwater discharges? es =1 No = 0
D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? (Yes=1 No = 0
D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land use residential at
>1 residence/ac, urban, commercial, agriculture, etc.)? 1Ygj7t No = 0
Total for D 5 Add the points in the boxes above
Rating of Landscape Potential If score is: 3 = H �1 or 2 = M `0 = L Record the rating on the first page
D 6.0. Are the hydrologic functions provided by the site valuable to society?
D 6.1. The unit is in a landscape that has flooding_ problems. Choose the description that best matches conditions around
the wetland unit being rated. Do not add points. Choose the highest score if more than one 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):
• Flooding occurs in a sub -basin that is immediately down -gradient of unit. points = 2
• Surface flooding problems are in a sub -basin farther down -gradient. points = 1
Flooding from groundwater is an issue in the sub -basin. points =1
The existing or potential outflow from the wetland is so constrained by human or natural conditions that the
water stored by the wetland cannot reach areas that flood. Explain why points = 0
There are no problems with flooding downstream of the wetland. oints = 0
D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan?
Yes =2(No =6-
Total for D 6 Add the points in the boxes above`
Rating of Value If score is: -2-4 = H I=M __0=L
Wetland Rating System for Western WA: 2014 Update
Rating Form - Effective January 1, 2015
Record the rating on the first page
0
Wetland name or number
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 he combined for each class to meet the threshold
of '4 ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked.
-Aquatic bed 4 structures or more: points = 4
ergent 3 structures: points = 2
(areas where shrubs have > 30% cover) 2 structures: points = 1
Forested (areas where trees have > 30% cover) 1 structure: points = 0
If the unit has a Forested class, check if:
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
TSeasonally flooded or inundated 3 types present: points = 2
__Occasionally flooded or inundated 2 types present: points = 1
,,, Saturated only 1 type present: points = 0
Permanently flowing stream or river in, or adjacent to, the wetland
Seasonally flowing stream in, or adjacent to, the wetland
Lake Fringe wetland 2 points
Freshwater tidal wetland 2 points
H 1.3. Richness of plant species
Count the number of plant species in the wetland that cover at least 10 ftz.
Different patches of the same species can be combined to meet the size threshold and you do not have to name
the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle
If you counted: > 19 species points = 2
5 -19 species spoirlts -'
< 5 species points = 0
H 1.4. Interspersion of habitats
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.
Q
None = 0 points Low = 1 point *oderate = 2 points
y.
All three diagrams
in this row
are HIGH = 3points
'i
Wetland Rating System for Western WA: 2014 Update 13
Rating Form — Effective January 1, 2015
Wetland name or number
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.
14rge, 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)
At least Y ac of thin -stemmed persistent plants or woody branches are present in areas that"are
,4ermanently or seasonally inundated (structures for egg -laying by amphibians)
Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of
strata)
Total for H 1 Add the points in the boxes above
Rating of Site Potential If score is: 15-18 = H 7-14 = M _0-6 = L
a.
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).
Calculate: % undisturbed habitat" + [(% moderate and low intensity land uses)/2]-L-= � %
If total accessible habitat is:
> 1/3 (33.3%) of 1 km Polygon points = 3
20-33% of 1 km Polygon points = 2
10-19% of 1 km Polygon points = 1
< 10% of 1 km Polygon _-ointsL0
H 2.2. Undisturbed habitat in 1 km Polygon around the wetland.
Calculate: % undisturbed habitat___ + [(% moderate and low intensity land uses)/2]„___
Undisturbed habitat > 50% of Polygon points = 3
Undisturbed habitat 10-50% and in 1-3 patches faints = 2
Undisturbed habitat 10-50% and > 3 patches points =1
Undisturbed habitat < 10% of 1 km Polygon points = 0
H 2.3. Land use intensity in 1 km Polygon: If
> 50% of 1 km Polygon is high intensity land use onts(- 2)
5 50% of 1 km Polygon is high intensity points = 0
Total for H 2 Add the points in the boxes above !
Rating of Landscape Potential If score is: -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)'
--elt 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
I�•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
Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1
Site does not meet any If the criteria above poinis = u
Rating of Value If score is', 2=H _1= M `0 = L Record the rating on the first page
Wetland Rating System for Western WA: 2014 Update 14
Rating Form - Effective January 1, 2015
Wetland name or number
WDFW Priority Habitats
Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can
be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington.
177 pp. hL4I I' kv.wa. r v 1) Ic or access the list from here:
:lLh;l.,lw�ttint_tv3�f�<rv�S rrzl��r1,��iEi.4xsifl>I� ;./11�a/)
Count how 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).
Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and
wildlife (full descriptions in WDFW PHS report).
Herbaceous Balds: Variable size patches of grass and fortis on shallow soils over bedrock.
Old-growth/Mature forests: Qld—grawth wg5t of Cascade.�rest - Stands of at least 2 tree species, forming a multi-
layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) > 32 in (81 cm) dbh or > 200
years of age. Ma_4 u) L - Stands with aiverage diameters exceeding 21 in (53 cm) dbh; crown cover may 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 in WDf W PHS report p. 161 - see web link above).
` lnstream: 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 nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and
Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report -
see web link on previous page).
— 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. May be 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 > 20 in (51 cm) in western
Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 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 15
Rating Form - Effective January 1, 2015
Wetland name or number
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
Wetland Type
Category
Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met.
SC 1.0. Estuarine wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
— The dominant water regime is tidal,
— Vegetated, and
— With a salinity greater than 0.5 ppt Yes –Go to SC 1.1 No= Not an estuarine wetland
SC I.I. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area
Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30•451?
Cat. I
Yes = Category I No - Go to SC 1.2
SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions?
—The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less
Cat.
than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25)
At least'/ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un -grazed or un -
mowed grassland.
Cat. II
—The wetland has at least two of the following features: tidal channels, depressions with open water, or,
contiguous freshwater wetlands. Yes = Category I No =-Category II
SC 2.0. Wetlands of High Conservation Value (WHCV)
SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High
Conservation Value? Yes – Go to SC 2.2 No – Go to SC 2.3
Cat.
SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? "
Yes= Category I No = Not a MlHCV
SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland?
h.ttp_;f /w+nlw]._clnr, wt.gc�y�nhPI(e desk/rtatasearch/wnl �yctl nc�5.. is f
Yes – Contact WNHP/WDNR and go to SC 2.4 No w Not a M/HCV
SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on
their website? Yes = Category 1 No = Not a WHCV
SC 3.0. Bogs
Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key
below. If you answer YES you will still need to rate the wetland based on its functions.
SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in .or
more of the first 32 in of the soil profile? Yes – Go to SC 3.3 No – Go to SC -3.2
SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep
over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or
pond? Yes – Go to SC 3.3 ': No = Is not a bog,
SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30%
cover of plant species listed in Table 4? Yes = Is a Category I bog No – Go to SC 3.4
NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by
measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the
plant species in Table 4 are present, the wetland is a bog.
Cat.
SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar,
western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the
species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy?
Yes = Is a Category I bog No = Is not a bog
Wetland Rating System for Western WA: 2014 Update 16
Rating Form — Effective January 1, 2015
Wetland name or number
SC 4.0, Forested Wetlands
Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA
Department of Fish and Wildlife's forests as priority habitats? If you answer YES you will still need to rate
the wetland based on Its functions.
— Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi -layered
canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of
age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more.
— Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the
species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm).
Yes= Category I No = Not a.forested wetland for this section'
Cat. I
SC 5.0. Wetlands in Coastal Lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
— The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from
marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks
—The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt)
during most of the year in at least a portion of the lagoon (needs to be measured near the bottom)
Cat.
Yes- Go to SC 5.1 No = Not a wetland in a coastal lagoon
SC 5,1. Does the wetland meet all of the following three conditions?
—The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less
than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100).
Cat. 11
—At least % of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un -grazed or un -
mowed grassland.
—The wetland is larger than 1/10 ac (4350 ft 2)
Yes = Category I No = Category II
SC 6.0. Interdunal Wetlands
Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If
you answer yes you will still need to rate the wetland based on its habitat functions.
In practical terms that means the following geographic areas:
— Long Beach Peninsula: Lands west of SR 103
— Grayland-Westport: Lands west of SR 105
Cat
— Ocean Shores-Copalis: lands west of SR 115 and SR 109
Yes - Go to SC 6.1 '. No = not an interdunal wetland for rating
SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M
Cat. II
for the three aspects of function)? Yes = Category I No - Go to SC 6.2 ,
SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? -
Yes = Category II No - Go to SC 6.3
Cat. III
SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac?
Yes = Category III No = Category IV
Cat. IV
Category of wetland based on Special Characteristics
If you answered No for all types, enter "Not Applicable" on Summary Form
Wetland Rating System for Western WA: 2014 Update 17
Rating Form - Effective January 1, 2015
x� � ^• yam.
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FIGURE 1
owardin plant classes: Palustrine Emergent and Shrub Scrub
ydroperiods: Saturated
ocation of Outlet: Chimacum Creek
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http://www.ecy.we.gov/prograrns/wq/bndlfrM DLsbyW ria; TM DLbyWria.html#tabl
FIGURE FOR QUESTION D. 6.0
l �•„y.1 res �'v,M1a�h°.{ C w {«y
r -
The area of the FEMA Floodplains from Jefferson County Critical Areas Maps are also
the mapped Wetland Areas in the Valley. Contours depict the uphill residential areas.
Local knowledge is that they do not flood below wetland. Wetland narrows as
Chimacum Creek channelizes more deeply and then culverts under Ness's Corner Road
next to Chimacum Library. The stream continues with more wetlands associated with the
stream. No flooding around the wetland area to cause harm to residential development.
APPENDICE D
"Approach and Methods"
APPROACH AND METHODS
CRITICAL AREA DETERMINATION, DELINEATION & CLASSIFICATION:
WETLAND DELINEATION BASED ON: STATE OF WASHINGTON DEPARTMENT OF ECOLOGY, Washington
State Wetlands Identification and Delineation Manual, Ecology Publication No. 96-94, adopted
under WAC 173-22-08, March 1997and its applicable regional supplements. Manual was
updated in 2010.
Wetland Determination
Two levels of information were gathered to do a routine wetland determination.
These included:
a) Review of preliminary site data and,
b) On-site investigation to determine the presence of wetlands and non wetland
waters.
a) A review of existing information was conducted to develop background knowledge
of physical features, and to identify the potential for wetland occurrence on the
subject property. The resource documents available for preliminary review of the site
conditions included: USDA Soil Conservation Service (SCS), "Soil Survey of
Jefferson County Area Washington", 2013 and 1994, Jefferson County aerial
photography, and Jefferson County Planning Department data.
b) During the on-site investigation, wetland areas were determined and verified on the basis of
three paE racnetei� : Hydrophytic Vegetation, Hydric Soils, and Wetland Hydrology, as recommended in
the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western
Mountains, Valleys and Coast Region (Version 2.0), May 2010. Hydric soils are classified using
Filed Indicators of Hydric Soils in the United States, Version 7.0, 2010.
Aosp itive wetland determination is made when all three parameters are present, or in certain
situations determined following the guidelines recommended in wetland determination procedures, or
for atypical situations or problem areas.
c) The wetland was classified as to type (category) by using the Washington State wetland
rating system for western Washington -October -2014. Effective January 2015, Washington State
Department of Ecology's Publication No. 03-06-029 and applicable Rating Forms Effective January
1, 2015.
16
Hydrophvtic Vegetation
Areas where more than 50% of the dominant species present from all strata are hydrophytes
(plants adapted to growth and reproduction in saturated soil conditions) are considered to be inside
the wetland boundary, unless clear evidence of hydric soils or wetland hydrology cannot be
established. A species is considered dominant if it is equal to or greater than 20% areal cover, or
exerts a controlling influence on, or defines the character of a community. Hydrophytic vegetation is
determined to be present, when under normal circumstances:
More than 50% of the dominant plant species in a plant community have an indicator
category of Obligate igate Wetland (OBL), Facultative Wetland (FACW), and/or Facultative (FAC) as
listed in "National List of Plant Species that Occur in Wetlands: Northwest (Region 9)", (Reed, Porter
B., Jr., 1988), and the "1993 Supplement to National List of Plant Species That Occur in Wetlands:
Northwest (Region 9)" dated December 1993 that became effective on March 31, 1994.
This Plant Indicator Status Categories system was developed for the USFWS
National Wetlands Inventory by Cowardin et al. (1979). The National Plant List Panel,
Reed, Porter B., and Jr. modified it in 1988 and 1993. The Wetland Indicator Category
(WIC) used in this report refers to the plants Indicator Symbol as referred to in the table
below. There have been changes to the list since 1993. In 2012 the list was updated and was
used for this report.
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Purpose and Approach Continued
National Indicators reflect the range of estimated probabilities (expressed as a
frequency of occurrence) of a species occurring in a wetland versus a non -wetland across the
entire distribution of the species. ("National List of Plant Species that Occur in Wetlands:
Northwest (Region 9)", Reed, Porter B., Jr., 2012), Supplement to List of Plant Species That
Occur in Wetlands: Northwest (Region 9) Percentages expressed as estimated probability.
Indicator Catezot^y Indicator Syni6l Definition
OBLIGATE WETLAND OBL Occur almost always, >99%
(estimated
PLANTS probability) in wetlands under
natural
conditions. <1% in non wetlands.
FACULTATIVE WETLAND FACW Usually occur in wetlands,
67-99% and
PLANTS 1-33% in non -wetlands.
FACULTATIVE PLANTS FAC Equally likely to occur in wetlands
and
non -wetlands 34-66%.
FACULTATIVE UPLAND FACU Usually occur in non wetlands 67-
99%,
PLANTS but occasionally found in wetlands
1-33%.
OBLIGATE UPLAND UPL Almost always occur in
non -wetlands of
Plants Northwest Region 9, >99%. <1%
in wetlands.
Hydric Soils
There have been tremendous scientific changes since 1991 in several of the indicators such as the
introduction of aquic conditions to cover the requirements for saturation, reduction, and
morphological indicators used to define the modified aquic moisture regime, and mottles and low
chroma colors being replaced by redoximorphic features. Because of these changes, we consult the
US Department of Agriculture, Natural Resource Conservation Service. 2007. Field Indicators of
Hydric Soils in the United States, Version 7.0". G. W. Hurt, L. M. Vasilas . (eds.), USDA, NRCS, in
cooeation with the National Technical Committee for Hydric Soils guidance and decision in making
final hydric soils determinations.
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Field indicators of hydric soil conditions in this document, (Land Resource Region (LRR) A that
includes Western Washington), are presented here:
(1) ALL SOILS:
Al. Histosols;
A2. Histic Epipedons;
A4. Hydrogen sulfide;
A6. Organic Bodies;
A7. Mucky mineral;
A8. Muck Presence;
A10.2 cm Muck;
All. Depleted Below Dark Surface; and
Al2. Thick Dark Surface
(2) SANDY SOILS:
S1. Sandy Mucky Mineral;
S4. Sandy Gleyed Matrix;
S5.Sandy Redox; and
S6. Stripped Matrix
(3) LOAMY AND CLAYEY SOILS:
Fl. Loamy Mucky Mineral;
F2. Loamy Gleyed Matrix;
F3. Depleted Matrix;
F6. Redox Dark Surface;
F7.Depleted Dark Surface; and
F8. Redox Depressions;
Wetland Hvdroio
Water is the driving force for wetlands. Indications of wetland hydrology are those where the
presence of water has an overriding influence on characteristics of vegetation and soils due to
anaerobic and reducing conditions, respectively.
Areas that are seasonally saturated and/or inundated to the surface for a consecutive number
of days for more than 12.5% of the growing season are wetlands provided the soil and vegetation
parameters are met. Areas wet between 5% and 12% of the growing season in most years may or
may not be wetlands, Areas saturated to the surface for less than 5% of the growing season are non -
wetlands. Wetland hydrology exists if field indicators are present.
Field indicators of wetland hydrology may include, but are not limited to visual observations
of inundation, ponding, soil saturation, oxidized root channels (rhizospheres) associated with living
roots and rhizomes, watermarks, drift lines, water -borne sediment deposition, or wetland drainage
patterns.
The growing season starting and ending dates are required to evaluate hydrologic data. For
wetland determinations, the growing season is determined using the local SCS county soils surveys.
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Generally, the growing season is calculated based on the "28 degrees F or lower" temperature
threshold at a frequency of "5 years in 10". For much of western Washington at low elevations, the
mesic growing season (March 1 to October 31) has been considered a good rule. However, in some
areas of the Puget Sound Lowlands and coastal areas the growing season occurs all year round
because the soil temperature at 19.7 inches below the soil surface is higher than 41 degrees F.
Rant Identification and Classification
Primary references used for scientific plant names and the endemic and non-native or exotic
status of plants to the North Olympic Peninsula were determined as found in Flora of the Pacific
Northwest by Hitchcock and Cronquist, Univ. of Washington Press, 1972. Other references referred
to included: (1) A Field Guide to the Common Wetland plants of Western Washington Sc
Northwestern Oregon by Sarah Spear Cooke, editor, Washington Native Plant Society, May 1997;
Wetland plants of Oregon & Washington by Jennifer Guard, Lone Pine Publishing, 1995; (2) Plants
of the Pacific Northwest Coast- Washington, Oregon, British Columbia & Alaska edited by Pojar and
Mackinnon, D.C. Forest Service, Research Program, Lone Pine Publishing, 1994 and, D.C. Forest
Service, Research Program, Lone Pine Publishing, 1994; and (3) Northwest Weeds by Ronald J.
Taylor, Mountain Press Publishing Company, 1990
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